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This commit is contained in:
Jeffrey Duroyon
2026-01-27 00:40:46 +01:00
parent 1e05874160
commit f8df24c29d
3169 changed files with 1216434 additions and 1587 deletions
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3
vendor/go.opentelemetry.io/otel/.clomonitor.yml generated vendored Normal file
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exemptions:
- check: artifacthub_badge
reason: "Artifact Hub doesn't support Go packages"

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vendor/go.opentelemetry.io/otel/.codespellignore generated vendored Normal file
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ot
fo
te
collison
consequentially
ans
nam
valu
thirdparty
addOpt
observ

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# https://github.com/codespell-project/codespell
[codespell]
builtin = clear,rare,informal
check-filenames =
check-hidden =
ignore-words = .codespellignore
interactive = 1
skip = .git,go.mod,go.sum,go.work,go.work.sum,semconv,venv,.tools
uri-ignore-words-list = *
write =

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vendor/go.opentelemetry.io/otel/.gitattributes generated vendored Normal file
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* text=auto eol=lf
*.{cmd,[cC][mM][dD]} text eol=crlf
*.{bat,[bB][aA][tT]} text eol=crlf

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vendor/go.opentelemetry.io/otel/.gitignore generated vendored Normal file
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.DS_Store
Thumbs.db
.cache/
.tools/
venv/
.idea/
.vscode/
*.iml
*.so
coverage.*
go.work
go.work.sum
gen/

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version: "2"
run:
issues-exit-code: 1
tests: true
linters:
default: none
enable:
- asasalint
- bodyclose
- depguard
- errcheck
- errorlint
- gocritic
- godot
- gosec
- govet
- ineffassign
- misspell
- perfsprint
- revive
- staticcheck
- testifylint
- unconvert
- unparam
- unused
- usestdlibvars
- usetesting
settings:
depguard:
rules:
auto/sdk:
files:
- '!internal/global/trace.go'
- ~internal/global/trace_test.go
deny:
- pkg: go.opentelemetry.io/auto/sdk
desc: Do not use SDK from automatic instrumentation.
non-tests:
files:
- '!$test'
- '!**/*test/*.go'
- '!**/internal/matchers/*.go'
deny:
- pkg: testing
- pkg: github.com/stretchr/testify
- pkg: crypto/md5
- pkg: crypto/sha1
- pkg: crypto/**/pkix
otel-internal:
files:
- '**/sdk/*.go'
- '**/sdk/**/*.go'
- '**/exporters/*.go'
- '**/exporters/**/*.go'
- '**/schema/*.go'
- '**/schema/**/*.go'
- '**/metric/*.go'
- '**/metric/**/*.go'
- '**/bridge/*.go'
- '**/bridge/**/*.go'
- '**/trace/*.go'
- '**/trace/**/*.go'
- '**/log/*.go'
- '**/log/**/*.go'
deny:
- pkg: go.opentelemetry.io/otel/internal$
desc: Do not use cross-module internal packages.
- pkg: go.opentelemetry.io/otel/internal/internaltest
desc: Do not use cross-module internal packages.
otlp-internal:
files:
- '!**/exporters/otlp/internal/**/*.go'
deny:
- pkg: go.opentelemetry.io/otel/exporters/otlp/internal
desc: Do not use cross-module internal packages.
otlpmetric-internal:
files:
- '!**/exporters/otlp/otlpmetric/internal/*.go'
- '!**/exporters/otlp/otlpmetric/internal/**/*.go'
deny:
- pkg: go.opentelemetry.io/otel/exporters/otlp/otlpmetric/internal
desc: Do not use cross-module internal packages.
otlptrace-internal:
files:
- '!**/exporters/otlp/otlptrace/*.go'
- '!**/exporters/otlp/otlptrace/internal/**.go'
deny:
- pkg: go.opentelemetry.io/otel/exporters/otlp/otlptrace/internal
desc: Do not use cross-module internal packages.
gocritic:
disabled-checks:
- appendAssign
- commentedOutCode
- dupArg
- hugeParam
- importShadow
- preferDecodeRune
- rangeValCopy
- unnamedResult
- whyNoLint
enable-all: true
godot:
exclude:
# Exclude links.
- '^ *\[[^]]+\]:'
# Exclude sentence fragments for lists.
- ^[ ]*[-•]
# Exclude sentences prefixing a list.
- :$
misspell:
locale: US
ignore-rules:
- cancelled
perfsprint:
int-conversion: true
err-error: true
errorf: true
sprintf1: true
strconcat: true
revive:
confidence: 0.01
rules:
- name: blank-imports
- name: bool-literal-in-expr
- name: constant-logical-expr
- name: context-as-argument
arguments:
- allowTypesBefore: '*testing.T'
disabled: true
- name: context-keys-type
- name: deep-exit
- name: defer
arguments:
- - call-chain
- loop
- name: dot-imports
- name: duplicated-imports
- name: early-return
arguments:
- preserveScope
- name: empty-block
- name: empty-lines
- name: error-naming
- name: error-return
- name: error-strings
- name: errorf
- name: exported
arguments:
- sayRepetitiveInsteadOfStutters
- name: flag-parameter
- name: identical-branches
- name: if-return
- name: import-shadowing
- name: increment-decrement
- name: indent-error-flow
arguments:
- preserveScope
- name: package-comments
- name: range
- name: range-val-in-closure
- name: range-val-address
- name: redefines-builtin-id
- name: string-format
arguments:
- - panic
- /^[^\n]*$/
- must not contain line breaks
- name: struct-tag
- name: superfluous-else
arguments:
- preserveScope
- name: time-equal
- name: unconditional-recursion
- name: unexported-return
- name: unhandled-error
arguments:
- fmt.Fprint
- fmt.Fprintf
- fmt.Fprintln
- fmt.Print
- fmt.Printf
- fmt.Println
- name: unused-parameter
- name: unused-receiver
- name: unnecessary-stmt
- name: use-any
- name: useless-break
- name: var-declaration
- name: var-naming
arguments:
- ["ID"] # AllowList
- ["Otel", "Aws", "Gcp"] # DenyList
- name: waitgroup-by-value
testifylint:
enable-all: true
disable:
- float-compare
- go-require
- require-error
usetesting:
context-background: true
context-todo: true
exclusions:
generated: lax
presets:
- common-false-positives
- legacy
- std-error-handling
rules:
- linters:
- revive
path: schema/v.*/types/.*
text: avoid meaningless package names
# TODO: Having appropriate comments for exported objects helps development,
# even for objects in internal packages. Appropriate comments for all
# exported objects should be added and this exclusion removed.
- linters:
- revive
path: .*internal/.*
text: exported (method|function|type|const) (.+) should have comment or be unexported
# Yes, they are, but it's okay in a test.
- linters:
- revive
path: _test\.go
text: exported func.*returns unexported type.*which can be annoying to use
# Example test functions should be treated like main.
- linters:
- revive
path: example.*_test\.go
text: calls to (.+) only in main[(][)] or init[(][)] functions
# It's okay to not run gosec and perfsprint in a test.
- linters:
- gosec
- perfsprint
path: _test\.go
# Ignoring gosec G404: Use of weak random number generator (math/rand instead of crypto/rand)
# as we commonly use it in tests and examples.
- linters:
- gosec
text: 'G404:'
# Ignoring gosec G402: TLS MinVersion too low
# as the https://pkg.go.dev/crypto/tls#Config handles MinVersion default well.
- linters:
- gosec
text: 'G402: TLS MinVersion too low.'
issues:
max-issues-per-linter: 0
max-same-issues: 0
formatters:
enable:
- gofumpt
- goimports
- golines
settings:
gofumpt:
extra-rules: true
goimports:
local-prefixes:
- go.opentelemetry.io/otel
golines:
max-len: 120
exclusions:
generated: lax

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http://localhost
https://localhost
http://jaeger-collector
https://github.com/open-telemetry/opentelemetry-go/milestone/
https://github.com/open-telemetry/opentelemetry-go/projects
# Weaver model URL for semantic-conventions repository.
https?:\/\/github\.com\/open-telemetry\/semantic-conventions\/archive\/refs\/tags\/[^.]+\.zip\[[^]]+]
file:///home/runner/work/opentelemetry-go/opentelemetry-go/libraries
file:///home/runner/work/opentelemetry-go/opentelemetry-go/manual
http://4.3.2.1:78/user/123
file:///home/runner/work/opentelemetry-go/opentelemetry-go/exporters/otlp/otlptrace/otlptracegrpc/internal/observ/dns:/:4317
# URL works, but it has blocked link checkers.
https://dl.acm.org/doi/10.1145/198429.198435

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# Default state for all rules
default: true
# ul-style
MD004: false
# hard-tabs
MD010: false
# line-length
MD013: false
# no-duplicate-header
MD024:
siblings_only: true
#single-title
MD025: false
# ol-prefix
MD029:
style: ordered
# no-inline-html
MD033: false
# fenced-code-language
MD040: false

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#####################################################
#
# List of approvers for this repository
#
#####################################################
#
# Learn about membership in OpenTelemetry community:
# https://github.com/open-telemetry/community/blob/main/guides/contributor/membership.md
#
#
# Learn about CODEOWNERS file format:
# https://help.github.com/en/articles/about-code-owners
#
* @MrAlias @XSAM @dashpole @pellared @dmathieu @flc1125
CODEOWNERS @MrAlias @pellared @dashpole @XSAM @dmathieu

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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Copyright 2009 The Go Authors.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
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327
vendor/go.opentelemetry.io/otel/Makefile generated vendored Normal file
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# Copyright The OpenTelemetry Authors
# SPDX-License-Identifier: Apache-2.0
TOOLS_MOD_DIR := ./internal/tools
ALL_DOCS := $(shell find . -name '*.md' -type f | sort)
ALL_GO_MOD_DIRS := $(shell find . -type f -name 'go.mod' -exec dirname {} \; | sort)
OTEL_GO_MOD_DIRS := $(filter-out $(TOOLS_MOD_DIR), $(ALL_GO_MOD_DIRS))
ALL_COVERAGE_MOD_DIRS := $(shell find . -type f -name 'go.mod' -exec dirname {} \; | grep -E -v '^./example|^$(TOOLS_MOD_DIR)' | sort)
GO = go
TIMEOUT = 60
# User to run as in docker images.
DOCKER_USER=$(shell id -u):$(shell id -g)
DEPENDENCIES_DOCKERFILE=./dependencies.Dockerfile
.DEFAULT_GOAL := precommit
.PHONY: precommit ci
precommit: generate toolchain-check license-check misspell go-mod-tidy golangci-lint-fix verify-readmes verify-mods test-default
ci: generate toolchain-check license-check lint vanity-import-check verify-readmes verify-mods build test-default check-clean-work-tree test-coverage
# Tools
TOOLS = $(CURDIR)/.tools
$(TOOLS):
@mkdir -p $@
$(TOOLS)/%: $(TOOLS_MOD_DIR)/go.mod | $(TOOLS)
cd $(TOOLS_MOD_DIR) && \
$(GO) build -o $@ $(PACKAGE)
MULTIMOD = $(TOOLS)/multimod
$(TOOLS)/multimod: PACKAGE=go.opentelemetry.io/build-tools/multimod
CROSSLINK = $(TOOLS)/crosslink
$(TOOLS)/crosslink: PACKAGE=go.opentelemetry.io/build-tools/crosslink
SEMCONVKIT = $(TOOLS)/semconvkit
$(TOOLS)/semconvkit: PACKAGE=go.opentelemetry.io/otel/$(TOOLS_MOD_DIR)/semconvkit
VERIFYREADMES = $(TOOLS)/verifyreadmes
$(TOOLS)/verifyreadmes: PACKAGE=go.opentelemetry.io/otel/$(TOOLS_MOD_DIR)/verifyreadmes
GOLANGCI_LINT = $(TOOLS)/golangci-lint
$(TOOLS)/golangci-lint: PACKAGE=github.com/golangci/golangci-lint/v2/cmd/golangci-lint
MISSPELL = $(TOOLS)/misspell
$(TOOLS)/misspell: PACKAGE=github.com/client9/misspell/cmd/misspell
GOCOVMERGE = $(TOOLS)/gocovmerge
$(TOOLS)/gocovmerge: PACKAGE=github.com/wadey/gocovmerge
STRINGER = $(TOOLS)/stringer
$(TOOLS)/stringer: PACKAGE=golang.org/x/tools/cmd/stringer
PORTO = $(TOOLS)/porto
$(TOOLS)/porto: PACKAGE=github.com/jcchavezs/porto/cmd/porto
GOTMPL = $(TOOLS)/gotmpl
$(GOTMPL): PACKAGE=go.opentelemetry.io/build-tools/gotmpl
GORELEASE = $(TOOLS)/gorelease
$(GORELEASE): PACKAGE=golang.org/x/exp/cmd/gorelease
GOVULNCHECK = $(TOOLS)/govulncheck
$(TOOLS)/govulncheck: PACKAGE=golang.org/x/vuln/cmd/govulncheck
.PHONY: tools
tools: $(CROSSLINK) $(GOLANGCI_LINT) $(MISSPELL) $(GOCOVMERGE) $(STRINGER) $(PORTO) $(VERIFYREADMES) $(MULTIMOD) $(SEMCONVKIT) $(GOTMPL) $(GORELEASE)
# Virtualized python tools via docker
# The directory where the virtual environment is created.
VENVDIR := venv
# The directory where the python tools are installed.
PYTOOLS := $(VENVDIR)/bin
# The pip executable in the virtual environment.
PIP := $(PYTOOLS)/pip
# The directory in the docker image where the current directory is mounted.
WORKDIR := /workdir
# The python image to use for the virtual environment.
PYTHONIMAGE := $(shell awk '$$4=="python" {print $$2}' $(DEPENDENCIES_DOCKERFILE))
# Run the python image with the current directory mounted.
DOCKERPY := docker run --rm -u $(DOCKER_USER) -v "$(CURDIR):$(WORKDIR)" -w $(WORKDIR) $(PYTHONIMAGE)
# Create a virtual environment for Python tools.
$(PYTOOLS):
# The `--upgrade` flag is needed to ensure that the virtual environment is
# created with the latest pip version.
@$(DOCKERPY) bash -c "python3 -m venv $(VENVDIR) && $(PIP) install --upgrade --cache-dir=$(WORKDIR)/.cache/pip pip"
# Install python packages into the virtual environment.
$(PYTOOLS)/%: $(PYTOOLS)
@$(DOCKERPY) $(PIP) install --cache-dir=$(WORKDIR)/.cache/pip -r requirements.txt
CODESPELL = $(PYTOOLS)/codespell
$(CODESPELL): PACKAGE=codespell
# Generate
.PHONY: generate
generate: go-generate vanity-import-fix
.PHONY: go-generate
go-generate: $(OTEL_GO_MOD_DIRS:%=go-generate/%)
go-generate/%: DIR=$*
go-generate/%: $(STRINGER) $(GOTMPL)
@echo "$(GO) generate $(DIR)/..." \
&& cd $(DIR) \
&& PATH="$(TOOLS):$${PATH}" $(GO) generate ./...
.PHONY: vanity-import-fix
vanity-import-fix: $(PORTO)
@$(PORTO) --include-internal -w .
# Generate go.work file for local development.
.PHONY: go-work
go-work: $(CROSSLINK)
$(CROSSLINK) work --root=$(shell pwd) --go=1.22.7
# Build
.PHONY: build
build: $(OTEL_GO_MOD_DIRS:%=build/%) $(OTEL_GO_MOD_DIRS:%=build-tests/%)
build/%: DIR=$*
build/%:
@echo "$(GO) build $(DIR)/..." \
&& cd $(DIR) \
&& $(GO) build ./...
build-tests/%: DIR=$*
build-tests/%:
@echo "$(GO) build tests $(DIR)/..." \
&& cd $(DIR) \
&& $(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -vet=off -run xxxxxMatchNothingxxxxx >/dev/null
# Tests
TEST_TARGETS := test-default test-bench test-short test-verbose test-race test-concurrent-safe test-fuzz
.PHONY: $(TEST_TARGETS) test
test-default test-race: ARGS=-race
test-bench: ARGS=-run=xxxxxMatchNothingxxxxx -test.benchtime=1ms -bench=.
test-short: ARGS=-short
test-fuzz: ARGS=-fuzztime=10s -fuzz
test-verbose: ARGS=-v -race
test-concurrent-safe: ARGS=-run=ConcurrentSafe -count=100 -race
test-concurrent-safe: TIMEOUT=120
$(TEST_TARGETS): test
test: $(OTEL_GO_MOD_DIRS:%=test/%)
test/%: DIR=$*
test/%:
@echo "$(GO) test -timeout $(TIMEOUT)s $(ARGS) $(DIR)/..." \
&& cd $(DIR) \
&& $(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -timeout $(TIMEOUT)s $(ARGS)
COVERAGE_MODE = atomic
COVERAGE_PROFILE = coverage.out
.PHONY: test-coverage
test-coverage: $(GOCOVMERGE)
@set -e; \
printf "" > coverage.txt; \
for dir in $(ALL_COVERAGE_MOD_DIRS); do \
echo "$(GO) test -coverpkg=go.opentelemetry.io/otel/... -covermode=$(COVERAGE_MODE) -coverprofile="$(COVERAGE_PROFILE)" $${dir}/..."; \
(cd "$${dir}" && \
$(GO) list ./... \
| grep -v third_party \
| grep -v 'semconv/v.*' \
| xargs $(GO) test -coverpkg=./... -covermode=$(COVERAGE_MODE) -coverprofile="$(COVERAGE_PROFILE)" && \
$(GO) tool cover -html=coverage.out -o coverage.html); \
done; \
$(GOCOVMERGE) $$(find . -name coverage.out) > coverage.txt
.PHONY: benchmark
benchmark: $(OTEL_GO_MOD_DIRS:%=benchmark/%)
benchmark/%:
@echo "$(GO) test -run=xxxxxMatchNothingxxxxx -bench=. $*..." \
&& cd $* \
&& $(GO) list ./... \
| grep -v third_party \
| xargs $(GO) test -run=xxxxxMatchNothingxxxxx -bench=.
.PHONY: golangci-lint golangci-lint-fix
golangci-lint-fix: ARGS=--fix
golangci-lint-fix: golangci-lint
golangci-lint: $(OTEL_GO_MOD_DIRS:%=golangci-lint/%)
golangci-lint/%: DIR=$*
golangci-lint/%: $(GOLANGCI_LINT)
@echo 'golangci-lint $(if $(ARGS),$(ARGS) ,)$(DIR)' \
&& cd $(DIR) \
&& $(GOLANGCI_LINT) run --allow-serial-runners $(ARGS)
.PHONY: crosslink
crosslink: $(CROSSLINK)
@echo "Updating intra-repository dependencies in all go modules" \
&& $(CROSSLINK) --root=$(shell pwd) --prune
.PHONY: go-mod-tidy
go-mod-tidy: $(ALL_GO_MOD_DIRS:%=go-mod-tidy/%)
go-mod-tidy/%: DIR=$*
go-mod-tidy/%: crosslink
@echo "$(GO) mod tidy in $(DIR)" \
&& cd $(DIR) \
&& $(GO) mod tidy -compat=1.21
.PHONY: lint
lint: misspell go-mod-tidy golangci-lint govulncheck
.PHONY: vanity-import-check
vanity-import-check: $(PORTO)
@$(PORTO) --include-internal -l . || ( echo "(run: make vanity-import-fix)"; exit 1 )
.PHONY: misspell
misspell: $(MISSPELL)
@$(MISSPELL) -w $(ALL_DOCS)
.PHONY: govulncheck
govulncheck: $(OTEL_GO_MOD_DIRS:%=govulncheck/%)
govulncheck/%: DIR=$*
govulncheck/%: $(GOVULNCHECK)
@echo "govulncheck ./... in $(DIR)" \
&& cd $(DIR) \
&& $(GOVULNCHECK) ./...
.PHONY: codespell
codespell: $(CODESPELL)
@$(DOCKERPY) $(CODESPELL)
.PHONY: toolchain-check
toolchain-check:
@toolchainRes=$$(for f in $(ALL_GO_MOD_DIRS); do \
awk '/^toolchain/ { found=1; next } END { if (found) print FILENAME }' $$f/go.mod; \
done); \
if [ -n "$${toolchainRes}" ]; then \
echo "toolchain checking failed:"; echo "$${toolchainRes}"; \
exit 1; \
fi
.PHONY: license-check
license-check:
@licRes=$$(for f in $$(find . -type f \( -iname '*.go' -o -iname '*.sh' \) ! -path '**/third_party/*' ! -path './.git/*' ) ; do \
awk '/Copyright The OpenTelemetry Authors|generated|GENERATED/ && NR<=4 { found=1; next } END { if (!found) print FILENAME }' $$f; \
done); \
if [ -n "$${licRes}" ]; then \
echo "license header checking failed:"; echo "$${licRes}"; \
exit 1; \
fi
.PHONY: check-clean-work-tree
check-clean-work-tree:
@if ! git diff --quiet; then \
echo; \
echo 'Working tree is not clean, did you forget to run "make precommit"?'; \
echo; \
git status; \
exit 1; \
fi
# The weaver docker image to use for semconv-generate.
WEAVER_IMAGE := $(shell awk '$$4=="weaver" {print $$2}' $(DEPENDENCIES_DOCKERFILE))
SEMCONVPKG ?= "semconv/"
.PHONY: semconv-generate
semconv-generate: $(SEMCONVKIT)
[ "$(TAG)" ] || ( echo "TAG unset: missing opentelemetry semantic-conventions tag"; exit 1 )
# Ensure the target directory for source code is available.
mkdir -p $(PWD)/$(SEMCONVPKG)/${TAG}
# Note: We mount a home directory for downloading/storing the semconv repository.
# Weaver will automatically clean the cache when finished, but the directories will remain.
mkdir -p ~/.weaver
docker run --rm \
-u $(DOCKER_USER) \
--env HOME=/tmp/weaver \
--mount 'type=bind,source=$(PWD)/semconv/templates,target=/home/weaver/templates,readonly' \
--mount 'type=bind,source=$(PWD)/semconv/${TAG},target=/home/weaver/target' \
--mount 'type=bind,source=$(HOME)/.weaver,target=/tmp/weaver/.weaver' \
$(WEAVER_IMAGE) registry generate \
--registry=https://github.com/open-telemetry/semantic-conventions/archive/refs/tags/$(TAG).zip[model] \
--templates=/home/weaver/templates \
--param tag=$(TAG) \
go \
/home/weaver/target
$(SEMCONVKIT) -semconv "$(SEMCONVPKG)" -tag "$(TAG)"
.PHONY: gorelease
gorelease: $(OTEL_GO_MOD_DIRS:%=gorelease/%)
gorelease/%: DIR=$*
gorelease/%:| $(GORELEASE)
@echo "gorelease in $(DIR):" \
&& cd $(DIR) \
&& $(GORELEASE) \
|| echo ""
.PHONY: verify-mods
verify-mods: $(MULTIMOD)
$(MULTIMOD) verify
.PHONY: prerelease
prerelease: verify-mods
@[ "${MODSET}" ] || ( echo ">> env var MODSET is not set"; exit 1 )
$(MULTIMOD) prerelease -m ${MODSET}
COMMIT ?= "HEAD"
.PHONY: add-tags
add-tags: verify-mods
@[ "${MODSET}" ] || ( echo ">> env var MODSET is not set"; exit 1 )
$(MULTIMOD) tag -m ${MODSET} -c ${COMMIT}
MARKDOWNIMAGE := $(shell awk '$$4=="markdown" {print $$2}' $(DEPENDENCIES_DOCKERFILE))
.PHONY: lint-markdown
lint-markdown:
docker run --rm -u $(DOCKER_USER) -v "$(CURDIR):$(WORKDIR)" $(MARKDOWNIMAGE) -c $(WORKDIR)/.markdownlint.yaml $(WORKDIR)/**/*.md
.PHONY: verify-readmes
verify-readmes: $(VERIFYREADMES)
$(VERIFYREADMES)

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# OpenTelemetry-Go
[![ci](https://github.com/open-telemetry/opentelemetry-go/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/open-telemetry/opentelemetry-go/actions/workflows/ci.yml)
[![codecov.io](https://codecov.io/gh/open-telemetry/opentelemetry-go/coverage.svg?branch=main)](https://app.codecov.io/gh/open-telemetry/opentelemetry-go?branch=main)
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel)](https://pkg.go.dev/go.opentelemetry.io/otel)
[![Go Report Card](https://goreportcard.com/badge/go.opentelemetry.io/otel)](https://goreportcard.com/report/go.opentelemetry.io/otel)
[![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/open-telemetry/opentelemetry-go/badge)](https://scorecard.dev/viewer/?uri=github.com/open-telemetry/opentelemetry-go)
[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/9996/badge)](https://www.bestpractices.dev/projects/9996)
[![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/opentelemetry-go.svg)](https://issues.oss-fuzz.com/issues?q=project:opentelemetry-go)
[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-go.svg?type=shield&issueType=license)](https://app.fossa.com/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-go?ref=badge_shield&issueType=license)
[![Slack](https://img.shields.io/badge/slack-@cncf/otel--go-brightgreen.svg?logo=slack)](https://cloud-native.slack.com/archives/C01NPAXACKT)
OpenTelemetry-Go is the [Go](https://golang.org/) implementation of [OpenTelemetry](https://opentelemetry.io/).
It provides a set of APIs to directly measure performance and behavior of your software and send this data to observability platforms.
## Project Status
| Signal | Status |
|---------|--------------------|
| Traces | Stable |
| Metrics | Stable |
| Logs | Beta[^1] |
Progress and status specific to this repository is tracked in our
[project boards](https://github.com/open-telemetry/opentelemetry-go/projects)
and
[milestones](https://github.com/open-telemetry/opentelemetry-go/milestones).
Project versioning information and stability guarantees can be found in the
[versioning documentation](VERSIONING.md).
[^1]: https://github.com/orgs/open-telemetry/projects/43
### Compatibility
OpenTelemetry-Go ensures compatibility with the current supported versions of
the [Go language](https://golang.org/doc/devel/release#policy):
> Each major Go release is supported until there are two newer major releases.
> For example, Go 1.5 was supported until the Go 1.7 release, and Go 1.6 was supported until the Go 1.8 release.
For versions of Go that are no longer supported upstream, opentelemetry-go will
stop ensuring compatibility with these versions in the following manner:
- A minor release of opentelemetry-go will be made to add support for the new
supported release of Go.
- The following minor release of opentelemetry-go will remove compatibility
testing for the oldest (now archived upstream) version of Go. This, and
future, releases of opentelemetry-go may include features only supported by
the currently supported versions of Go.
Currently, this project supports the following environments.
| OS | Go Version | Architecture |
|----------|------------|--------------|
| Ubuntu | 1.25 | amd64 |
| Ubuntu | 1.24 | amd64 |
| Ubuntu | 1.25 | 386 |
| Ubuntu | 1.24 | 386 |
| Ubuntu | 1.25 | arm64 |
| Ubuntu | 1.24 | arm64 |
| macOS | 1.25 | amd64 |
| macOS | 1.24 | amd64 |
| macOS | 1.25 | arm64 |
| macOS | 1.24 | arm64 |
| Windows | 1.25 | amd64 |
| Windows | 1.24 | amd64 |
| Windows | 1.25 | 386 |
| Windows | 1.24 | 386 |
While this project should work for other systems, no compatibility guarantees
are made for those systems currently.
## Getting Started
You can find a getting started guide on [opentelemetry.io](https://opentelemetry.io/docs/languages/go/getting-started/).
OpenTelemetry's goal is to provide a single set of APIs to capture distributed
traces and metrics from your application and send them to an observability
platform. This project allows you to do just that for applications written in
Go. There are two steps to this process: instrument your application, and
configure an exporter.
### Instrumentation
To start capturing distributed traces and metric events from your application
it first needs to be instrumented. The easiest way to do this is by using an
instrumentation library for your code. Be sure to check out [the officially
supported instrumentation
libraries](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/instrumentation).
If you need to extend the telemetry an instrumentation library provides or want
to build your own instrumentation for your application directly you will need
to use the
[Go otel](https://pkg.go.dev/go.opentelemetry.io/otel)
package. The [examples](https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/examples)
are a good way to see some practical uses of this process.
### Export
Now that your application is instrumented to collect telemetry, it needs an
export pipeline to send that telemetry to an observability platform.
All officially supported exporters for the OpenTelemetry project are contained in the [exporters directory](./exporters).
| Exporter | Logs | Metrics | Traces |
|---------------------------------------|:----:|:-------:|:------:|
| [OTLP](./exporters/otlp/) | ✓ | ✓ | ✓ |
| [Prometheus](./exporters/prometheus/) | | ✓ | |
| [stdout](./exporters/stdout/) | ✓ | ✓ | ✓ |
| [Zipkin](./exporters/zipkin/) | | | ✓ |
## Contributing
See the [contributing documentation](CONTRIBUTING.md).

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# Release Process
## Create a `Version Release` issue
Create a `Version Release` issue to track the release process.
## Semantic Convention Generation
New versions of the [OpenTelemetry Semantic Conventions] mean new versions of the `semconv` package need to be generated.
The `semconv-generate` make target is used for this.
1. Set the `TAG` environment variable to the semantic convention tag you want to generate.
2. Run the `make semconv-generate ...` target from this repository.
For example,
```sh
export TAG="v1.30.0" # Change to the release version you are generating.
make semconv-generate # Uses the exported TAG.
```
This should create a new sub-package of [`semconv`](./semconv).
Ensure things look correct before submitting a pull request to include the addition.
## Breaking changes validation
You can run `make gorelease` which runs [gorelease](https://pkg.go.dev/golang.org/x/exp/cmd/gorelease) to ensure that there are no unwanted changes made in the public API.
You can check/report problems with `gorelease` [here](https://golang.org/issues/26420).
## Verify changes for contrib repository
If the changes in the main repository are going to affect the contrib repository, it is important to verify that the changes are compatible with the contrib repository.
Follow [the steps](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/RELEASING.md#verify-otel-changes) in the contrib repository to verify OTel changes.
## Pre-Release
First, decide which module sets will be released and update their versions
in `versions.yaml`. Commit this change to a new branch.
Update go.mod for submodules to depend on the new release which will happen in the next step.
1. Run the `prerelease` make target. It creates a branch
`prerelease_<module set>_<new tag>` that will contain all release changes.
```
make prerelease MODSET=<module set>
```
2. Verify the changes.
```
git diff ...prerelease_<module set>_<new tag>
```
This should have changed the version for all modules to be `<new tag>`.
If these changes look correct, merge them into your pre-release branch:
```go
git merge prerelease_<module set>_<new tag>
```
3. Update the [Changelog](./CHANGELOG.md).
- Make sure all relevant changes for this release are included and are written in language that non-contributors to the project can understand.
To verify this, you can look directly at the commits since the `<last tag>`.
```
git --no-pager log --pretty=oneline "<last tag>..HEAD"
```
- Move all the `Unreleased` changes into a new section following the title scheme (`[<new tag>] - <date of release>`).
- Make sure the new section is under the comment for released section, like `<!-- Released section -->`, so it is protected from being overwritten in the future.
- Update all the appropriate links at the bottom.
4. Push the changes to upstream and create a Pull Request on GitHub.
Be sure to include the curated changes from the [Changelog](./CHANGELOG.md) in the description.
## Tag
Once the Pull Request with all the version changes has been approved and merged it is time to tag the merged commit.
***IMPORTANT***: It is critical you use the same tag that you used in the Pre-Release step!
Failure to do so will leave things in a broken state. As long as you do not
change `versions.yaml` between pre-release and this step, things should be fine.
***IMPORTANT***: [There is currently no way to remove an incorrectly tagged version of a Go module](https://github.com/golang/go/issues/34189).
It is critical you make sure the version you push upstream is correct.
[Failure to do so will lead to minor emergencies and tough to work around](https://github.com/open-telemetry/opentelemetry-go/issues/331).
1. For each module set that will be released, run the `add-tags` make target
using the `<commit-hash>` of the commit on the main branch for the merged Pull Request.
```
make add-tags MODSET=<module set> COMMIT=<commit hash>
```
It should only be necessary to provide an explicit `COMMIT` value if the
current `HEAD` of your working directory is not the correct commit.
2. Push tags to the upstream remote (not your fork: `github.com/open-telemetry/opentelemetry-go.git`).
Make sure you push all sub-modules as well.
```
git push upstream <new tag>
git push upstream <submodules-path/new tag>
...
```
## Sign artifacts
To ensure we comply with CNCF best practices, we need to sign the release artifacts.
Download the `.tar.gz` and `.zip` archives from the [tags page](https://github.com/open-telemetry/opentelemetry-go/tags) for the new release tag.
Both archives need to be signed with your GPG key.
You can use [this script] to verify the contents of the archives before signing them.
To find your GPG key ID, run:
```terminal
gpg --list-secret-keys --keyid-format=long
```
The key ID is the 16-character string after `sec rsa4096/` (or similar).
Set environment variables and sign both artifacts:
```terminal
export VERSION="<version>" # e.g., v1.32.0
export KEY_ID="<your-gpg-key-id>"
gpg --local-user $KEY_ID --armor --detach-sign opentelemetry-go-$VERSION.tar.gz
gpg --local-user $KEY_ID --armor --detach-sign opentelemetry-go-$VERSION.zip
```
You can verify the signatures with:
```terminal
gpg --verify opentelemetry-go-$VERSION.tar.gz.asc opentelemetry-go-$VERSION.tar.gz
gpg --verify opentelemetry-go-$VERSION.zip.asc opentelemetry-go-$VERSION.zip
```
[this script]: https://github.com/MrAlias/attest-sh
## Release
Finally create a Release for the new `<new tag>` on GitHub.
The release body should include all the release notes from the Changelog for this release.
***IMPORTANT***: GitHub Releases are immutable once created.
You must upload the signed artifacts (`.tar.gz`, `.tar.gz.asc`, `.zip`, and `.zip.asc`) when creating the release, as they cannot be added or modified later.
## Post-Release
### Contrib Repository
Once verified be sure to [make a release for the `contrib` repository](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/RELEASING.md) that uses this release.
### Website Documentation
Update the [Go instrumentation documentation] in the OpenTelemetry website under [content/en/docs/languages/go].
Importantly, bump any package versions referenced to be the latest one you just released and ensure all code examples still compile and are accurate.
[OpenTelemetry Semantic Conventions]: https://github.com/open-telemetry/semantic-conventions
[Go instrumentation documentation]: https://opentelemetry.io/docs/languages/go/
[content/en/docs/languages/go]: https://github.com/open-telemetry/opentelemetry.io/tree/main/content/en/docs/languages/go
### Close the milestone
Once a release is made, ensure all issues that were fixed and PRs that were merged as part of this release are added to the corresponding milestone.
This helps track what changes were included in each release.
- To find issues that haven't been included in a milestone, use this [GitHub search query](https://github.com/open-telemetry/opentelemetry-go/issues?q=is%3Aissue%20no%3Amilestone%20is%3Aclosed%20sort%3Aupdated-desc%20reason%3Acompleted%20-label%3AStale%20linked%3Apr)
- To find merged PRs that haven't been included in a milestone, use this [GitHub search query](https://github.com/open-telemetry/opentelemetry-go/pulls?q=is%3Apr+no%3Amilestone+is%3Amerged).
Once all related issues and PRs have been added to the milestone, close the milestone.
### Close the `Version Release` issue
Once the todo list in the `Version Release` issue is complete, close the issue.

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header:
schema-version: "1.0.0"
expiration-date: "2026-08-04T00:00:00.000Z"
last-updated: "2025-08-04"
last-reviewed: "2025-08-04"
commit-hash: 69e81088ad40f45a0764597326722dea8f3f00a8
project-url: https://github.com/open-telemetry/opentelemetry-go
project-release: "v1.37.0"
changelog: https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/CHANGELOG.md
license: https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/LICENSE
project-lifecycle:
status: active
bug-fixes-only: false
core-maintainers:
- https://github.com/dmathieu
- https://github.com/dashpole
- https://github.com/pellared
- https://github.com/XSAM
- https://github.com/MrAlias
release-process: |
See https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/RELEASING.md
contribution-policy:
accepts-pull-requests: true
accepts-automated-pull-requests: true
automated-tools-list:
- automated-tool: dependabot
action: allowed
comment: Automated dependency updates are accepted.
- automated-tool: renovatebot
action: allowed
comment: Automated dependency updates are accepted.
- automated-tool: opentelemetrybot
action: allowed
comment: Automated OpenTelemetry actions are accepted.
contributing-policy: https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/CONTRIBUTING.md
code-of-conduct: https://github.com/open-telemetry/.github/blob/ffa15f76b65ec7bcc41f6a0b277edbb74f832206/CODE_OF_CONDUCT.md
documentation:
- https://pkg.go.dev/go.opentelemetry.io/otel
- https://opentelemetry.io/docs/instrumentation/go/
distribution-points:
- pkg:golang/go.opentelemetry.io/otel
- pkg:golang/go.opentelemetry.io/otel/bridge/opencensus
- pkg:golang/go.opentelemetry.io/otel/bridge/opencensus/test
- pkg:golang/go.opentelemetry.io/otel/bridge/opentracing
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp
- pkg:golang/go.opentelemetry.io/otel/exporters/stdout/stdoutmetric
- pkg:golang/go.opentelemetry.io/otel/exporters/stdout/stdouttrace
- pkg:golang/go.opentelemetry.io/otel/exporters/zipkin
- pkg:golang/go.opentelemetry.io/otel/metric
- pkg:golang/go.opentelemetry.io/otel/sdk
- pkg:golang/go.opentelemetry.io/otel/sdk/metric
- pkg:golang/go.opentelemetry.io/otel/trace
- pkg:golang/go.opentelemetry.io/otel/exporters/prometheus
- pkg:golang/go.opentelemetry.io/otel/log
- pkg:golang/go.opentelemetry.io/otel/log/logtest
- pkg:golang/go.opentelemetry.io/otel/sdk/log
- pkg:golang/go.opentelemetry.io/otel/sdk/log/logtest
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc
- pkg:golang/go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp
- pkg:golang/go.opentelemetry.io/otel/exporters/stdout/stdoutlog
- pkg:golang/go.opentelemetry.io/otel/schema
security-artifacts:
threat-model:
threat-model-created: false
comment: |
No formal threat model created yet.
self-assessment:
self-assessment-created: false
comment: |
No formal self-assessment yet.
security-testing:
- tool-type: sca
tool-name: Dependabot
tool-version: latest
tool-url: https://github.com/dependabot
tool-rulesets:
- built-in
integration:
ad-hoc: false
ci: true
before-release: true
comment: |
Automated dependency updates.
- tool-type: sast
tool-name: golangci-lint
tool-version: latest
tool-url: https://github.com/golangci/golangci-lint
tool-rulesets:
- built-in
integration:
ad-hoc: false
ci: true
before-release: true
comment: |
Static analysis in CI.
- tool-type: fuzzing
tool-name: OSS-Fuzz
tool-version: latest
tool-url: https://github.com/google/oss-fuzz
tool-rulesets:
- default
integration:
ad-hoc: false
ci: false
before-release: false
comment: |
OpenTelemetry Go is integrated with OSS-Fuzz for continuous fuzz testing. See https://github.com/google/oss-fuzz/tree/f0f9b221190c6063a773bea606d192ebfc3d00cf/projects/opentelemetry-go for more details.
- tool-type: sast
tool-name: CodeQL
tool-version: latest
tool-url: https://github.com/github/codeql
tool-rulesets:
- default
integration:
ad-hoc: false
ci: true
before-release: true
comment: |
CodeQL static analysis is run in CI for all commits and pull requests to detect security vulnerabilities in the Go source code. See https://github.com/open-telemetry/opentelemetry-go/blob/d5b5b059849720144a03ca5c87561bfbdb940119/.github/workflows/codeql-analysis.yml for workflow details.
- tool-type: sca
tool-name: govulncheck
tool-version: latest
tool-url: https://pkg.go.dev/golang.org/x/vuln/cmd/govulncheck
tool-rulesets:
- default
integration:
ad-hoc: false
ci: true
before-release: true
comment: |
govulncheck is run in CI to detect known vulnerabilities in Go modules and code paths. See https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/.github/workflows/ci.yml for workflow configuration.
security-assessments:
- auditor-name: 7ASecurity
auditor-url: https://7asecurity.com
auditor-report: https://7asecurity.com/reports/pentest-report-opentelemetry.pdf
report-year: 2023
comment: |
This independent penetration test by 7ASecurity covered OpenTelemetry repositories including opentelemetry-go. The assessment focused on codebase review, threat modeling, and vulnerability identification. See the report for details of findings and recommendations applicable to opentelemetry-go. No critical vulnerabilities were found for this repository.
security-contacts:
- type: email
value: cncf-opentelemetry-security@lists.cncf.io
primary: true
- type: website
value: https://github.com/open-telemetry/opentelemetry-go/security/policy
primary: false
vulnerability-reporting:
accepts-vulnerability-reports: true
email-contact: cncf-opentelemetry-security@lists.cncf.io
security-policy: https://github.com/open-telemetry/opentelemetry-go/security/policy
comment: |
Security issues should be reported via email or GitHub security policy page.
dependencies:
third-party-packages: true
dependencies-lists:
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/bridge/opencensus/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/bridge/opencensus/test/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/bridge/opentracing/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlplog/otlploggrpc/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlplog/otlploghttp/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlpmetric/otlpmetricgrpc/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlpmetric/otlpmetrichttp/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlptrace/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlptrace/otlptracegrpc/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/otlp/otlptrace/otlptracehttp/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/prometheus/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/stdout/stdoutlog/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/stdout/stdoutmetric/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/stdout/stdouttrace/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/exporters/zipkin/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/internal/tools/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/log/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/log/logtest/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/metric/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/schema/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/sdk/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/sdk/log/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/sdk/log/logtest/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/sdk/metric/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/trace/go.mod
- https://github.com/open-telemetry/opentelemetry-go/blob/v1.37.0/trace/internal/telemetry/test/go.mod
dependencies-lifecycle:
policy-url: https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/CONTRIBUTING.md
comment: |
Dependency lifecycle managed via go.mod and renovatebot.
env-dependencies-policy:
policy-url: https://github.com/open-telemetry/opentelemetry-go/blob/69e81088ad40f45a0764597326722dea8f3f00a8/CONTRIBUTING.md
comment: |
See contributing policy for environment usage.

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vendor/go.opentelemetry.io/otel/VERSIONING.md generated vendored Normal file
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# Versioning
This document describes the versioning policy for this repository. This policy
is designed so the following goals can be achieved.
**Users are provided a codebase of value that is stable and secure.**
## Policy
* Versioning of this project will be idiomatic of a Go project using [Go
modules](https://github.com/golang/go/wiki/Modules).
* [Semantic import
versioning](https://github.com/golang/go/wiki/Modules#semantic-import-versioning)
will be used.
* Versions will comply with [semver
2.0](https://semver.org/spec/v2.0.0.html) with the following exceptions.
* New methods may be added to exported API interfaces. All exported
interfaces that fall within this exception will include the following
paragraph in their public documentation.
> Warning: methods may be added to this interface in minor releases.
* If a module is version `v2` or higher, the major version of the module
must be included as a `/vN` at the end of the module paths used in
`go.mod` files (e.g., `module go.opentelemetry.io/otel/v2`, `require
go.opentelemetry.io/otel/v2 v2.0.1`) and in the package import path
(e.g., `import "go.opentelemetry.io/otel/v2/trace"`). This includes the
paths used in `go get` commands (e.g., `go get
go.opentelemetry.io/otel/v2@v2.0.1`). Note there is both a `/v2` and a
`@v2.0.1` in that example. One way to think about it is that the module
name now includes the `/v2`, so include `/v2` whenever you are using the
module name).
* If a module is version `v0` or `v1`, do not include the major version in
either the module path or the import path.
* Modules will be used to encapsulate signals and components.
* Experimental modules still under active development will be versioned at
`v0` to imply the stability guarantee defined by
[semver](https://semver.org/spec/v2.0.0.html#spec-item-4).
> Major version zero (0.y.z) is for initial development. Anything MAY
> change at any time. The public API SHOULD NOT be considered stable.
* Mature modules for which we guarantee a stable public API will be versioned
with a major version greater than `v0`.
* The decision to make a module stable will be made on a case-by-case
basis by the maintainers of this project.
* Experimental modules will start their versioning at `v0.0.0` and will
increment their minor version when backwards incompatible changes are
released and increment their patch version when backwards compatible
changes are released.
* All stable modules that use the same major version number will use the
same entire version number.
* Stable modules may be released with an incremented minor or patch
version even though that module has not been changed, but rather so
that it will remain at the same version as other stable modules that
did undergo change.
* When an experimental module becomes stable a new stable module version
will be released and will include this now stable module. The new
stable module version will be an increment of the minor version number
and will be applied to all existing stable modules as well as the newly
stable module being released.
* Versioning of the associated [contrib
repository](https://github.com/open-telemetry/opentelemetry-go-contrib) of
this project will be idiomatic of a Go project using [Go
modules](https://github.com/golang/go/wiki/Modules).
* [Semantic import
versioning](https://github.com/golang/go/wiki/Modules#semantic-import-versioning)
will be used.
* Versions will comply with [semver 2.0](https://semver.org/spec/v2.0.0.html).
* If a module is version `v2` or higher, the
major version of the module must be included as a `/vN` at the end of the
module paths used in `go.mod` files (e.g., `module
go.opentelemetry.io/contrib/instrumentation/host/v2`, `require
go.opentelemetry.io/contrib/instrumentation/host/v2 v2.0.1`) and in the
package import path (e.g., `import
"go.opentelemetry.io/contrib/instrumentation/host/v2"`). This includes
the paths used in `go get` commands (e.g., `go get
go.opentelemetry.io/contrib/instrumentation/host/v2@v2.0.1`. Note there
is both a `/v2` and a `@v2.0.1` in that example. One way to think about
it is that the module name now includes the `/v2`, so include `/v2`
whenever you are using the module name).
* If a module is version `v0` or `v1`, do not include the major version
in either the module path or the import path.
* In addition to public APIs, telemetry produced by stable instrumentation
will remain stable and backwards compatible. This is to avoid breaking
alerts and dashboards.
* Modules will be used to encapsulate instrumentation, detectors, exporters,
propagators, and any other independent sets of related components.
* Experimental modules still under active development will be versioned at
`v0` to imply the stability guarantee defined by
[semver](https://semver.org/spec/v2.0.0.html#spec-item-4).
> Major version zero (0.y.z) is for initial development. Anything MAY
> change at any time. The public API SHOULD NOT be considered stable.
* Mature modules for which we guarantee a stable public API and telemetry will
be versioned with a major version greater than `v0`.
* Experimental modules will start their versioning at `v0.0.0` and will
increment their minor version when backwards incompatible changes are
released and increment their patch version when backwards compatible
changes are released.
* Stable contrib modules cannot depend on experimental modules from this
project.
* All stable contrib modules of the same major version with this project
will use the same entire version as this project.
* Stable modules may be released with an incremented minor or patch
version even though that module's code has not been changed. Instead
the only change that will have been included is to have updated that
modules dependency on this project's stable APIs.
* When an experimental module in contrib becomes stable a new stable
module version will be released and will include this now stable
module. The new stable module version will be an increment of the minor
version number and will be applied to all existing stable contrib
modules, this project's modules, and the newly stable module being
released.
* Contrib modules will be kept up to date with this project's releases.
* Due to the dependency contrib modules will implicitly have on this
project's modules the release of stable contrib modules to match the
released version number will be staggered after this project's release.
There is no explicit time guarantee for how long after this projects
release the contrib release will be. Effort should be made to keep them
as close in time as possible.
* No additional stable release in this project can be made until the
contrib repository has a matching stable release.
* No release can be made in the contrib repository after this project's
stable release except for a stable release of the contrib repository.
* GitHub releases will be made for all releases.
* Go modules will be made available at Go package mirrors.
## Example Versioning Lifecycle
To better understand the implementation of the above policy the following
example is provided. This project is simplified to include only the following
modules and their versions:
* `otel`: `v0.14.0`
* `otel/trace`: `v0.14.0`
* `otel/metric`: `v0.14.0`
* `otel/baggage`: `v0.14.0`
* `otel/sdk/trace`: `v0.14.0`
* `otel/sdk/metric`: `v0.14.0`
These modules have been developed to a point where the `otel/trace`,
`otel/baggage`, and `otel/sdk/trace` modules have reached a point that they
should be considered for a stable release. The `otel/metric` and
`otel/sdk/metric` are still under active development and the `otel` module
depends on both `otel/trace` and `otel/metric`.
The `otel` package is refactored to remove its dependencies on `otel/metric` so
it can be released as stable as well. With that done the following release
candidates are made:
* `otel`: `v1.0.0-RC1`
* `otel/trace`: `v1.0.0-RC1`
* `otel/baggage`: `v1.0.0-RC1`
* `otel/sdk/trace`: `v1.0.0-RC1`
The `otel/metric` and `otel/sdk/metric` modules remain at `v0.14.0`.
A few minor issues are discovered in the `otel/trace` package. These issues are
resolved with some minor, but backwards incompatible, changes and are released
as a second release candidate:
* `otel`: `v1.0.0-RC2`
* `otel/trace`: `v1.0.0-RC2`
* `otel/baggage`: `v1.0.0-RC2`
* `otel/sdk/trace`: `v1.0.0-RC2`
Notice that all module version numbers are incremented to adhere to our
versioning policy.
After these release candidates have been evaluated to satisfaction, they are
released as version `v1.0.0`.
* `otel`: `v1.0.0`
* `otel/trace`: `v1.0.0`
* `otel/baggage`: `v1.0.0`
* `otel/sdk/trace`: `v1.0.0`
Since both the `go` utility and the Go module system support [the semantic
versioning definition of
precedence](https://semver.org/spec/v2.0.0.html#spec-item-11), this release
will correctly be interpreted as the successor to the previous release
candidates.
Active development of this project continues. The `otel/metric` module now has
backwards incompatible changes to its API that need to be released and the
`otel/baggage` module has a minor bug fix that needs to be released. The
following release is made:
* `otel`: `v1.0.1`
* `otel/trace`: `v1.0.1`
* `otel/metric`: `v0.15.0`
* `otel/baggage`: `v1.0.1`
* `otel/sdk/trace`: `v1.0.1`
* `otel/sdk/metric`: `v0.15.0`
Notice that, again, all stable module versions are incremented in unison and
the `otel/sdk/metric` package, which depends on the `otel/metric` package, also
bumped its version. This bump of the `otel/sdk/metric` package makes sense
given their coupling, though it is not explicitly required by our versioning
policy.
As we progress, the `otel/metric` and `otel/sdk/metric` packages have reached a
point where they should be evaluated for stability. The `otel` module is
reintegrated with the `otel/metric` package and the following release is made:
* `otel`: `v1.1.0-RC1`
* `otel/trace`: `v1.1.0-RC1`
* `otel/metric`: `v1.1.0-RC1`
* `otel/baggage`: `v1.1.0-RC1`
* `otel/sdk/trace`: `v1.1.0-RC1`
* `otel/sdk/metric`: `v1.1.0-RC1`
All the modules are evaluated and determined to a viable stable release. They
are then released as version `v1.1.0` (the minor version is incremented to
indicate the addition of new signal).
* `otel`: `v1.1.0`
* `otel/trace`: `v1.1.0`
* `otel/metric`: `v1.1.0`
* `otel/baggage`: `v1.1.0`
* `otel/sdk/trace`: `v1.1.0`
* `otel/sdk/metric`: `v1.1.0`

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# Attribute
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/attribute)](https://pkg.go.dev/go.opentelemetry.io/otel/attribute)

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vendor/go.opentelemetry.io/otel/attribute/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package attribute provides key and value attributes.
package attribute // import "go.opentelemetry.io/otel/attribute"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"bytes"
"sync"
"sync/atomic"
)
type (
// Encoder is a mechanism for serializing an attribute set into a specific
// string representation that supports caching, to avoid repeated
// serialization. An example could be an exporter encoding the attribute
// set into a wire representation.
Encoder interface {
// Encode returns the serialized encoding of the attribute set using
// its Iterator. This result may be cached by an attribute.Set.
Encode(iterator Iterator) string
// ID returns a value that is unique for each class of attribute
// encoder. Attribute encoders allocate these using `NewEncoderID`.
ID() EncoderID
}
// EncoderID is used to identify distinct Encoder
// implementations, for caching encoded results.
EncoderID struct {
value uint64
}
// defaultAttrEncoder uses a sync.Pool of buffers to reduce the number of
// allocations used in encoding attributes. This implementation encodes a
// comma-separated list of key=value, with '/'-escaping of '=', ',', and
// '\'.
defaultAttrEncoder struct {
// pool is a pool of attribute set builders. The buffers in this pool
// grow to a size that most attribute encodings will not allocate new
// memory.
pool sync.Pool // *bytes.Buffer
}
)
// escapeChar is used to ensure uniqueness of the attribute encoding where
// keys or values contain either '=' or ','. Since there is no parser needed
// for this encoding and its only requirement is to be unique, this choice is
// arbitrary. Users will see these in some exporters (e.g., stdout), so the
// backslash ('\') is used as a conventional choice.
const escapeChar = '\\'
var (
_ Encoder = &defaultAttrEncoder{}
// encoderIDCounter is for generating IDs for other attribute encoders.
encoderIDCounter uint64
defaultEncoderOnce sync.Once
defaultEncoderID = NewEncoderID()
defaultEncoderInstance *defaultAttrEncoder
)
// NewEncoderID returns a unique attribute encoder ID. It should be called
// once per each type of attribute encoder. Preferably in init() or in var
// definition.
func NewEncoderID() EncoderID {
return EncoderID{value: atomic.AddUint64(&encoderIDCounter, 1)}
}
// DefaultEncoder returns an attribute encoder that encodes attributes in such
// a way that each escaped attribute's key is followed by an equal sign and
// then by an escaped attribute's value. All key-value pairs are separated by
// a comma.
//
// Escaping is done by prepending a backslash before either a backslash, equal
// sign or a comma.
func DefaultEncoder() Encoder {
defaultEncoderOnce.Do(func() {
defaultEncoderInstance = &defaultAttrEncoder{
pool: sync.Pool{
New: func() any {
return &bytes.Buffer{}
},
},
}
})
return defaultEncoderInstance
}
// Encode is a part of an implementation of the AttributeEncoder interface.
func (d *defaultAttrEncoder) Encode(iter Iterator) string {
buf := d.pool.Get().(*bytes.Buffer)
defer d.pool.Put(buf)
buf.Reset()
for iter.Next() {
i, keyValue := iter.IndexedAttribute()
if i > 0 {
_ = buf.WriteByte(',')
}
copyAndEscape(buf, string(keyValue.Key))
_ = buf.WriteByte('=')
if keyValue.Value.Type() == STRING {
copyAndEscape(buf, keyValue.Value.AsString())
} else {
_, _ = buf.WriteString(keyValue.Value.Emit())
}
}
return buf.String()
}
// ID is a part of an implementation of the AttributeEncoder interface.
func (*defaultAttrEncoder) ID() EncoderID {
return defaultEncoderID
}
// copyAndEscape escapes `=`, `,` and its own escape character (`\`),
// making the default encoding unique.
func copyAndEscape(buf *bytes.Buffer, val string) {
for _, ch := range val {
switch ch {
case '=', ',', escapeChar:
_ = buf.WriteByte(escapeChar)
}
_, _ = buf.WriteRune(ch)
}
}
// Valid reports whether this encoder ID was allocated by
// [NewEncoderID]. Invalid encoder IDs will not be cached.
func (id EncoderID) Valid() bool {
return id.value != 0
}

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vendor/go.opentelemetry.io/otel/attribute/filter.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
// Filter supports removing certain attributes from attribute sets. When
// the filter returns true, the attribute will be kept in the filtered
// attribute set. When the filter returns false, the attribute is excluded
// from the filtered attribute set, and the attribute instead appears in
// the removed list of excluded attributes.
type Filter func(KeyValue) bool
// NewAllowKeysFilter returns a Filter that only allows attributes with one of
// the provided keys.
//
// If keys is empty a deny-all filter is returned.
func NewAllowKeysFilter(keys ...Key) Filter {
if len(keys) == 0 {
return func(KeyValue) bool { return false }
}
allowed := make(map[Key]struct{}, len(keys))
for _, k := range keys {
allowed[k] = struct{}{}
}
return func(kv KeyValue) bool {
_, ok := allowed[kv.Key]
return ok
}
}
// NewDenyKeysFilter returns a Filter that only allows attributes
// that do not have one of the provided keys.
//
// If keys is empty an allow-all filter is returned.
func NewDenyKeysFilter(keys ...Key) Filter {
if len(keys) == 0 {
return func(KeyValue) bool { return true }
}
forbid := make(map[Key]struct{}, len(keys))
for _, k := range keys {
forbid[k] = struct{}{}
}
return func(kv KeyValue) bool {
_, ok := forbid[kv.Key]
return !ok
}
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"fmt"
"reflect"
"go.opentelemetry.io/otel/attribute/internal/xxhash"
)
// Type identifiers. These identifiers are hashed before the value of the
// corresponding type. This is done to distinguish values that are hashed with
// the same value representation (e.g. `int64(1)` and `true`, []int64{0} and
// int64(0)).
//
// These are all 8 byte length strings converted to a uint64 representation. A
// uint64 is used instead of the string directly as an optimization, it avoids
// the for loop in [xxhash] which adds minor overhead.
const (
boolID uint64 = 7953749933313450591 // "_boolean" (little endian)
int64ID uint64 = 7592915492740740150 // "64_bit_i" (little endian)
float64ID uint64 = 7376742710626956342 // "64_bit_f" (little endian)
stringID uint64 = 6874584755375207263 // "_string_" (little endian)
boolSliceID uint64 = 6875993255270243167 // "_[]bool_" (little endian)
int64SliceID uint64 = 3762322556277578591 // "_[]int64" (little endian)
float64SliceID uint64 = 7308324551835016539 // "[]double" (little endian)
stringSliceID uint64 = 7453010373645655387 // "[]string" (little endian)
)
// hashKVs returns a new xxHash64 hash of kvs.
func hashKVs(kvs []KeyValue) uint64 {
h := xxhash.New()
for _, kv := range kvs {
h = hashKV(h, kv)
}
return h.Sum64()
}
// hashKV returns the xxHash64 hash of kv with h as the base.
func hashKV(h xxhash.Hash, kv KeyValue) xxhash.Hash {
h = h.String(string(kv.Key))
switch kv.Value.Type() {
case BOOL:
h = h.Uint64(boolID)
h = h.Uint64(kv.Value.numeric)
case INT64:
h = h.Uint64(int64ID)
h = h.Uint64(kv.Value.numeric)
case FLOAT64:
h = h.Uint64(float64ID)
// Assumes numeric stored with math.Float64bits.
h = h.Uint64(kv.Value.numeric)
case STRING:
h = h.Uint64(stringID)
h = h.String(kv.Value.stringly)
case BOOLSLICE:
h = h.Uint64(boolSliceID)
rv := reflect.ValueOf(kv.Value.slice)
for i := 0; i < rv.Len(); i++ {
h = h.Bool(rv.Index(i).Bool())
}
case INT64SLICE:
h = h.Uint64(int64SliceID)
rv := reflect.ValueOf(kv.Value.slice)
for i := 0; i < rv.Len(); i++ {
h = h.Int64(rv.Index(i).Int())
}
case FLOAT64SLICE:
h = h.Uint64(float64SliceID)
rv := reflect.ValueOf(kv.Value.slice)
for i := 0; i < rv.Len(); i++ {
h = h.Float64(rv.Index(i).Float())
}
case STRINGSLICE:
h = h.Uint64(stringSliceID)
rv := reflect.ValueOf(kv.Value.slice)
for i := 0; i < rv.Len(); i++ {
h = h.String(rv.Index(i).String())
}
case INVALID:
default:
// Logging is an alternative, but using the internal logger here
// causes an import cycle so it is not done.
v := kv.Value.AsInterface()
msg := fmt.Sprintf("unknown value type: %[1]v (%[1]T)", v)
panic(msg)
}
return h
}

96
vendor/go.opentelemetry.io/otel/attribute/internal/attribute.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package attribute provide several helper functions for some commonly used
logic of processing attributes.
*/
package attribute // import "go.opentelemetry.io/otel/attribute/internal"
import (
"reflect"
)
// BoolSliceValue converts a bool slice into an array with same elements as slice.
func BoolSliceValue(v []bool) any {
var zero bool
cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
reflect.Copy(cp, reflect.ValueOf(v))
return cp.Interface()
}
// Int64SliceValue converts an int64 slice into an array with same elements as slice.
func Int64SliceValue(v []int64) any {
var zero int64
cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
reflect.Copy(cp, reflect.ValueOf(v))
return cp.Interface()
}
// Float64SliceValue converts a float64 slice into an array with same elements as slice.
func Float64SliceValue(v []float64) any {
var zero float64
cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
reflect.Copy(cp, reflect.ValueOf(v))
return cp.Interface()
}
// StringSliceValue converts a string slice into an array with same elements as slice.
func StringSliceValue(v []string) any {
var zero string
cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(zero))).Elem()
reflect.Copy(cp, reflect.ValueOf(v))
return cp.Interface()
}
// AsBoolSlice converts a bool array into a slice into with same elements as array.
func AsBoolSlice(v any) []bool {
rv := reflect.ValueOf(v)
if rv.Type().Kind() != reflect.Array {
return nil
}
cpy := make([]bool, rv.Len())
if len(cpy) > 0 {
_ = reflect.Copy(reflect.ValueOf(cpy), rv)
}
return cpy
}
// AsInt64Slice converts an int64 array into a slice into with same elements as array.
func AsInt64Slice(v any) []int64 {
rv := reflect.ValueOf(v)
if rv.Type().Kind() != reflect.Array {
return nil
}
cpy := make([]int64, rv.Len())
if len(cpy) > 0 {
_ = reflect.Copy(reflect.ValueOf(cpy), rv)
}
return cpy
}
// AsFloat64Slice converts a float64 array into a slice into with same elements as array.
func AsFloat64Slice(v any) []float64 {
rv := reflect.ValueOf(v)
if rv.Type().Kind() != reflect.Array {
return nil
}
cpy := make([]float64, rv.Len())
if len(cpy) > 0 {
_ = reflect.Copy(reflect.ValueOf(cpy), rv)
}
return cpy
}
// AsStringSlice converts a string array into a slice into with same elements as array.
func AsStringSlice(v any) []string {
rv := reflect.ValueOf(v)
if rv.Type().Kind() != reflect.Array {
return nil
}
cpy := make([]string, rv.Len())
if len(cpy) > 0 {
_ = reflect.Copy(reflect.ValueOf(cpy), rv)
}
return cpy
}

64
vendor/go.opentelemetry.io/otel/attribute/internal/xxhash/xxhash.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package xxhash provides a wrapper around the xxhash library for attribute hashing.
package xxhash // import "go.opentelemetry.io/otel/attribute/internal/xxhash"
import (
"encoding/binary"
"math"
"github.com/cespare/xxhash/v2"
)
// Hash wraps xxhash.Digest to provide an API friendly for hashing attribute values.
type Hash struct {
d *xxhash.Digest
}
// New returns a new initialized xxHash64 hasher.
func New() Hash {
return Hash{d: xxhash.New()}
}
func (h Hash) Uint64(val uint64) Hash {
var buf [8]byte
binary.LittleEndian.PutUint64(buf[:], val)
// errors from Write are always nil for xxhash
// if it returns an err then panic
_, err := h.d.Write(buf[:])
if err != nil {
panic("xxhash write of uint64 failed: " + err.Error())
}
return h
}
func (h Hash) Bool(val bool) Hash { // nolint:revive // This is a hashing function.
if val {
return h.Uint64(1)
}
return h.Uint64(0)
}
func (h Hash) Float64(val float64) Hash {
return h.Uint64(math.Float64bits(val))
}
func (h Hash) Int64(val int64) Hash {
return h.Uint64(uint64(val)) // nolint:gosec // Overflow doesn't matter since we are hashing.
}
func (h Hash) String(val string) Hash {
// errors from WriteString are always nil for xxhash
// if it returns an err then panic
_, err := h.d.WriteString(val)
if err != nil {
panic("xxhash write of string failed: " + err.Error())
}
return h
}
// Sum64 returns the current hash value.
func (h Hash) Sum64() uint64 {
return h.d.Sum64()
}

151
vendor/go.opentelemetry.io/otel/attribute/iterator.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
// Iterator allows iterating over the set of attributes in order, sorted by
// key.
type Iterator struct {
storage *Set
idx int
}
// MergeIterator supports iterating over two sets of attributes while
// eliminating duplicate values from the combined set. The first iterator
// value takes precedence.
type MergeIterator struct {
one oneIterator
two oneIterator
current KeyValue
}
type oneIterator struct {
iter Iterator
done bool
attr KeyValue
}
// Next moves the iterator to the next position.
// Next reports whether there are more attributes.
func (i *Iterator) Next() bool {
i.idx++
return i.idx < i.Len()
}
// Label returns current KeyValue. Must be called only after Next returns
// true.
//
// Deprecated: Use Attribute instead.
func (i *Iterator) Label() KeyValue {
return i.Attribute()
}
// Attribute returns the current KeyValue of the Iterator. It must be called
// only after Next returns true.
func (i *Iterator) Attribute() KeyValue {
kv, _ := i.storage.Get(i.idx)
return kv
}
// IndexedLabel returns current index and attribute. Must be called only
// after Next returns true.
//
// Deprecated: Use IndexedAttribute instead.
func (i *Iterator) IndexedLabel() (int, KeyValue) {
return i.idx, i.Attribute()
}
// IndexedAttribute returns current index and attribute. Must be called only
// after Next returns true.
func (i *Iterator) IndexedAttribute() (int, KeyValue) {
return i.idx, i.Attribute()
}
// Len returns a number of attributes in the iterated set.
func (i *Iterator) Len() int {
return i.storage.Len()
}
// ToSlice is a convenience function that creates a slice of attributes from
// the passed iterator. The iterator is set up to start from the beginning
// before creating the slice.
func (i *Iterator) ToSlice() []KeyValue {
l := i.Len()
if l == 0 {
return nil
}
i.idx = -1
slice := make([]KeyValue, 0, l)
for i.Next() {
slice = append(slice, i.Attribute())
}
return slice
}
// NewMergeIterator returns a MergeIterator for merging two attribute sets.
// Duplicates are resolved by taking the value from the first set.
func NewMergeIterator(s1, s2 *Set) MergeIterator {
mi := MergeIterator{
one: makeOne(s1.Iter()),
two: makeOne(s2.Iter()),
}
return mi
}
func makeOne(iter Iterator) oneIterator {
oi := oneIterator{
iter: iter,
}
oi.advance()
return oi
}
func (oi *oneIterator) advance() {
if oi.done = !oi.iter.Next(); !oi.done {
oi.attr = oi.iter.Attribute()
}
}
// Next moves the iterator to the next position.
// Next reports whether there is another attribute available.
func (m *MergeIterator) Next() bool {
if m.one.done && m.two.done {
return false
}
if m.one.done {
m.current = m.two.attr
m.two.advance()
return true
}
if m.two.done {
m.current = m.one.attr
m.one.advance()
return true
}
if m.one.attr.Key == m.two.attr.Key {
m.current = m.one.attr // first iterator attribute value wins
m.one.advance()
m.two.advance()
return true
}
if m.one.attr.Key < m.two.attr.Key {
m.current = m.one.attr
m.one.advance()
return true
}
m.current = m.two.attr
m.two.advance()
return true
}
// Label returns the current value after Next() returns true.
//
// Deprecated: Use Attribute instead.
func (m *MergeIterator) Label() KeyValue {
return m.current
}
// Attribute returns the current value after Next() returns true.
func (m *MergeIterator) Attribute() KeyValue {
return m.current
}

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vendor/go.opentelemetry.io/otel/attribute/key.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
// Key represents the key part in key-value pairs. It's a string. The
// allowed character set in the key depends on the use of the key.
type Key string
// Bool creates a KeyValue instance with a BOOL Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Bool(name, value).
func (k Key) Bool(v bool) KeyValue {
return KeyValue{
Key: k,
Value: BoolValue(v),
}
}
// BoolSlice creates a KeyValue instance with a BOOLSLICE Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- BoolSlice(name, value).
func (k Key) BoolSlice(v []bool) KeyValue {
return KeyValue{
Key: k,
Value: BoolSliceValue(v),
}
}
// Int creates a KeyValue instance with an INT64 Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Int(name, value).
func (k Key) Int(v int) KeyValue {
return KeyValue{
Key: k,
Value: IntValue(v),
}
}
// IntSlice creates a KeyValue instance with an INT64SLICE Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- IntSlice(name, value).
func (k Key) IntSlice(v []int) KeyValue {
return KeyValue{
Key: k,
Value: IntSliceValue(v),
}
}
// Int64 creates a KeyValue instance with an INT64 Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Int64(name, value).
func (k Key) Int64(v int64) KeyValue {
return KeyValue{
Key: k,
Value: Int64Value(v),
}
}
// Int64Slice creates a KeyValue instance with an INT64SLICE Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Int64Slice(name, value).
func (k Key) Int64Slice(v []int64) KeyValue {
return KeyValue{
Key: k,
Value: Int64SliceValue(v),
}
}
// Float64 creates a KeyValue instance with a FLOAT64 Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Float64(name, value).
func (k Key) Float64(v float64) KeyValue {
return KeyValue{
Key: k,
Value: Float64Value(v),
}
}
// Float64Slice creates a KeyValue instance with a FLOAT64SLICE Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- Float64(name, value).
func (k Key) Float64Slice(v []float64) KeyValue {
return KeyValue{
Key: k,
Value: Float64SliceValue(v),
}
}
// String creates a KeyValue instance with a STRING Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- String(name, value).
func (k Key) String(v string) KeyValue {
return KeyValue{
Key: k,
Value: StringValue(v),
}
}
// StringSlice creates a KeyValue instance with a STRINGSLICE Value.
//
// If creating both a key and value at the same time, use the provided
// convenience function instead -- StringSlice(name, value).
func (k Key) StringSlice(v []string) KeyValue {
return KeyValue{
Key: k,
Value: StringSliceValue(v),
}
}
// Defined reports whether the key is not empty.
func (k Key) Defined() bool {
return len(k) != 0
}

75
vendor/go.opentelemetry.io/otel/attribute/kv.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"fmt"
)
// KeyValue holds a key and value pair.
type KeyValue struct {
Key Key
Value Value
}
// Valid reports whether kv is a valid OpenTelemetry attribute.
func (kv KeyValue) Valid() bool {
return kv.Key.Defined() && kv.Value.Type() != INVALID
}
// Bool creates a KeyValue with a BOOL Value type.
func Bool(k string, v bool) KeyValue {
return Key(k).Bool(v)
}
// BoolSlice creates a KeyValue with a BOOLSLICE Value type.
func BoolSlice(k string, v []bool) KeyValue {
return Key(k).BoolSlice(v)
}
// Int creates a KeyValue with an INT64 Value type.
func Int(k string, v int) KeyValue {
return Key(k).Int(v)
}
// IntSlice creates a KeyValue with an INT64SLICE Value type.
func IntSlice(k string, v []int) KeyValue {
return Key(k).IntSlice(v)
}
// Int64 creates a KeyValue with an INT64 Value type.
func Int64(k string, v int64) KeyValue {
return Key(k).Int64(v)
}
// Int64Slice creates a KeyValue with an INT64SLICE Value type.
func Int64Slice(k string, v []int64) KeyValue {
return Key(k).Int64Slice(v)
}
// Float64 creates a KeyValue with a FLOAT64 Value type.
func Float64(k string, v float64) KeyValue {
return Key(k).Float64(v)
}
// Float64Slice creates a KeyValue with a FLOAT64SLICE Value type.
func Float64Slice(k string, v []float64) KeyValue {
return Key(k).Float64Slice(v)
}
// String creates a KeyValue with a STRING Value type.
func String(k, v string) KeyValue {
return Key(k).String(v)
}
// StringSlice creates a KeyValue with a STRINGSLICE Value type.
func StringSlice(k string, v []string) KeyValue {
return Key(k).StringSlice(v)
}
// Stringer creates a new key-value pair with a passed name and a string
// value generated by the passed Stringer interface.
func Stringer(k string, v fmt.Stringer) KeyValue {
return Key(k).String(v.String())
}

37
vendor/go.opentelemetry.io/otel/attribute/rawhelpers.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"math"
)
func boolToRaw(b bool) uint64 { // nolint:revive // b is not a control flag.
if b {
return 1
}
return 0
}
func rawToBool(r uint64) bool {
return r != 0
}
func int64ToRaw(i int64) uint64 {
// Assumes original was a valid int64 (overflow not checked).
return uint64(i) // nolint: gosec
}
func rawToInt64(r uint64) int64 {
// Assumes original was a valid int64 (overflow not checked).
return int64(r) // nolint: gosec
}
func float64ToRaw(f float64) uint64 {
return math.Float64bits(f)
}
func rawToFloat64(r uint64) float64 {
return math.Float64frombits(r)
}

436
vendor/go.opentelemetry.io/otel/attribute/set.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"cmp"
"encoding/json"
"reflect"
"slices"
"sort"
"go.opentelemetry.io/otel/attribute/internal/xxhash"
)
type (
// Set is the representation for a distinct attribute set. It manages an
// immutable set of attributes, with an internal cache for storing
// attribute encodings.
//
// This type will remain comparable for backwards compatibility. The
// equivalence of Sets across versions is not guaranteed to be stable.
// Prior versions may find two Sets to be equal or not when compared
// directly (i.e. ==), but subsequent versions may not. Users should use
// the Equals method to ensure stable equivalence checking.
//
// Users should also use the Distinct returned from Equivalent as a map key
// instead of a Set directly. Set has relatively poor performance when used
// as a map key compared to Distinct.
Set struct {
hash uint64
data any
}
// Distinct is an identifier of a Set which is very likely to be unique.
//
// Distinct should be used as a map key instead of a Set for to provide better
// performance for map operations.
Distinct struct {
hash uint64
}
// Sortable implements sort.Interface, used for sorting KeyValue.
//
// Deprecated: This type is no longer used. It was added as a performance
// optimization for Go < 1.21 that is no longer needed (Go < 1.21 is no
// longer supported by the module).
Sortable []KeyValue
)
// Compile time check these types remain comparable.
var (
_ = isComparable(Set{})
_ = isComparable(Distinct{})
)
func isComparable[T comparable](t T) T { return t }
var (
// keyValueType is used in computeDistinctReflect.
keyValueType = reflect.TypeOf(KeyValue{})
// emptyHash is the hash of an empty set.
emptyHash = xxhash.New().Sum64()
// userDefinedEmptySet is an empty set. It was mistakenly exposed to users
// as something they can assign to, so it must remain addressable and
// mutable.
//
// This is kept for backwards compatibility, but should not be used in new code.
userDefinedEmptySet = &Set{
hash: emptyHash,
data: [0]KeyValue{},
}
emptySet = Set{
hash: emptyHash,
data: [0]KeyValue{},
}
)
// EmptySet returns a reference to a Set with no elements.
//
// This is a convenience provided for optimized calling utility.
func EmptySet() *Set {
// Continue to return the pointer to the user-defined empty set for
// backwards-compatibility.
//
// New code should not use this, instead use emptySet.
return userDefinedEmptySet
}
// Valid reports whether this value refers to a valid Set.
func (d Distinct) Valid() bool { return d.hash != 0 }
// reflectValue abbreviates reflect.ValueOf(d).
func (l Set) reflectValue() reflect.Value {
return reflect.ValueOf(l.data)
}
// Len returns the number of attributes in this set.
func (l *Set) Len() int {
if l == nil || l.hash == 0 {
return 0
}
return l.reflectValue().Len()
}
// Get returns the KeyValue at ordered position idx in this set.
func (l *Set) Get(idx int) (KeyValue, bool) {
if l == nil || l.hash == 0 {
return KeyValue{}, false
}
value := l.reflectValue()
if idx >= 0 && idx < value.Len() {
// Note: The Go compiler successfully avoids an allocation for
// the interface{} conversion here:
return value.Index(idx).Interface().(KeyValue), true
}
return KeyValue{}, false
}
// Value returns the value of a specified key in this set.
func (l *Set) Value(k Key) (Value, bool) {
if l == nil || l.hash == 0 {
return Value{}, false
}
rValue := l.reflectValue()
vlen := rValue.Len()
idx := sort.Search(vlen, func(idx int) bool {
return rValue.Index(idx).Interface().(KeyValue).Key >= k
})
if idx >= vlen {
return Value{}, false
}
keyValue := rValue.Index(idx).Interface().(KeyValue)
if k == keyValue.Key {
return keyValue.Value, true
}
return Value{}, false
}
// HasValue reports whether a key is defined in this set.
func (l *Set) HasValue(k Key) bool {
if l == nil {
return false
}
_, ok := l.Value(k)
return ok
}
// Iter returns an iterator for visiting the attributes in this set.
func (l *Set) Iter() Iterator {
return Iterator{
storage: l,
idx: -1,
}
}
// ToSlice returns the set of attributes belonging to this set, sorted, where
// keys appear no more than once.
func (l *Set) ToSlice() []KeyValue {
iter := l.Iter()
return iter.ToSlice()
}
// Equivalent returns a value that may be used as a map key. Equal Distinct
// values are very likely to be equivalent attribute Sets. Distinct value of any
// attribute set with the same elements as this, where sets are made unique by
// choosing the last value in the input for any given key.
func (l *Set) Equivalent() Distinct {
if l == nil || l.hash == 0 {
return Distinct{hash: emptySet.hash}
}
return Distinct{hash: l.hash}
}
// Equals reports whether the argument set is equivalent to this set.
func (l *Set) Equals(o *Set) bool {
if l.Equivalent() != o.Equivalent() {
return false
}
if l == nil || l.hash == 0 {
l = &emptySet
}
if o == nil || o.hash == 0 {
o = &emptySet
}
return l.data == o.data
}
// Encoded returns the encoded form of this set, according to encoder.
func (l *Set) Encoded(encoder Encoder) string {
if l == nil || encoder == nil {
return ""
}
return encoder.Encode(l.Iter())
}
// NewSet returns a new Set. See the documentation for
// NewSetWithSortableFiltered for more details.
//
// Except for empty sets, this method adds an additional allocation compared
// with calls that include a Sortable.
func NewSet(kvs ...KeyValue) Set {
s, _ := NewSetWithFiltered(kvs, nil)
return s
}
// NewSetWithSortable returns a new Set. See the documentation for
// NewSetWithSortableFiltered for more details.
//
// This call includes a Sortable option as a memory optimization.
//
// Deprecated: Use [NewSet] instead.
func NewSetWithSortable(kvs []KeyValue, _ *Sortable) Set {
s, _ := NewSetWithFiltered(kvs, nil)
return s
}
// NewSetWithFiltered returns a new Set. See the documentation for
// NewSetWithSortableFiltered for more details.
//
// This call includes a Filter to include/exclude attribute keys from the
// return value. Excluded keys are returned as a slice of attribute values.
func NewSetWithFiltered(kvs []KeyValue, filter Filter) (Set, []KeyValue) {
// Check for empty set.
if len(kvs) == 0 {
return emptySet, nil
}
// Stable sort so the following de-duplication can implement
// last-value-wins semantics.
slices.SortStableFunc(kvs, func(a, b KeyValue) int {
return cmp.Compare(a.Key, b.Key)
})
position := len(kvs) - 1
offset := position - 1
// The requirements stated above require that the stable
// result be placed in the end of the input slice, while
// overwritten values are swapped to the beginning.
//
// De-duplicate with last-value-wins semantics. Preserve
// duplicate values at the beginning of the input slice.
for ; offset >= 0; offset-- {
if kvs[offset].Key == kvs[position].Key {
continue
}
position--
kvs[offset], kvs[position] = kvs[position], kvs[offset]
}
kvs = kvs[position:]
if filter != nil {
if div := filteredToFront(kvs, filter); div != 0 {
return newSet(kvs[div:]), kvs[:div]
}
}
return newSet(kvs), nil
}
// NewSetWithSortableFiltered returns a new Set.
//
// Duplicate keys are eliminated by taking the last value. This
// re-orders the input slice so that unique last-values are contiguous
// at the end of the slice.
//
// This ensures the following:
//
// - Last-value-wins semantics
// - Caller sees the reordering, but doesn't lose values
// - Repeated call preserve last-value wins.
//
// Note that methods are defined on Set, although this returns Set. Callers
// can avoid memory allocations by:
//
// - allocating a Sortable for use as a temporary in this method
// - allocating a Set for storing the return value of this constructor.
//
// The result maintains a cache of encoded attributes, by attribute.EncoderID.
// This value should not be copied after its first use.
//
// The second []KeyValue return value is a list of attributes that were
// excluded by the Filter (if non-nil).
//
// Deprecated: Use [NewSetWithFiltered] instead.
func NewSetWithSortableFiltered(kvs []KeyValue, _ *Sortable, filter Filter) (Set, []KeyValue) {
return NewSetWithFiltered(kvs, filter)
}
// filteredToFront filters slice in-place using keep function. All KeyValues that need to
// be removed are moved to the front. All KeyValues that need to be kept are
// moved (in-order) to the back. The index for the first KeyValue to be kept is
// returned.
func filteredToFront(slice []KeyValue, keep Filter) int {
n := len(slice)
j := n
for i := n - 1; i >= 0; i-- {
if keep(slice[i]) {
j--
slice[i], slice[j] = slice[j], slice[i]
}
}
return j
}
// Filter returns a filtered copy of this Set. See the documentation for
// NewSetWithSortableFiltered for more details.
func (l *Set) Filter(re Filter) (Set, []KeyValue) {
if re == nil {
return *l, nil
}
// Iterate in reverse to the first attribute that will be filtered out.
n := l.Len()
first := n - 1
for ; first >= 0; first-- {
kv, _ := l.Get(first)
if !re(kv) {
break
}
}
// No attributes will be dropped, return the immutable Set l and nil.
if first < 0 {
return *l, nil
}
// Copy now that we know we need to return a modified set.
//
// Do not do this in-place on the underlying storage of *Set l. Sets are
// immutable and filtering should not change this.
slice := l.ToSlice()
// Don't re-iterate the slice if only slice[0] is filtered.
if first == 0 {
// It is safe to assume len(slice) >= 1 given we found at least one
// attribute above that needs to be filtered out.
return newSet(slice[1:]), slice[:1]
}
// Move the filtered slice[first] to the front (preserving order).
kv := slice[first]
copy(slice[1:first+1], slice[:first])
slice[0] = kv
// Do not re-evaluate re(slice[first+1:]).
div := filteredToFront(slice[1:first+1], re) + 1
return newSet(slice[div:]), slice[:div]
}
// newSet returns a new set based on the sorted and uniqued kvs.
func newSet(kvs []KeyValue) Set {
s := Set{
hash: hashKVs(kvs),
data: computeDataFixed(kvs),
}
if s.data == nil {
s.data = computeDataReflect(kvs)
}
return s
}
// computeDataFixed computes a Set data for small slices. It returns nil if the
// input is too large for this code path.
func computeDataFixed(kvs []KeyValue) any {
switch len(kvs) {
case 1:
return [1]KeyValue(kvs)
case 2:
return [2]KeyValue(kvs)
case 3:
return [3]KeyValue(kvs)
case 4:
return [4]KeyValue(kvs)
case 5:
return [5]KeyValue(kvs)
case 6:
return [6]KeyValue(kvs)
case 7:
return [7]KeyValue(kvs)
case 8:
return [8]KeyValue(kvs)
case 9:
return [9]KeyValue(kvs)
case 10:
return [10]KeyValue(kvs)
default:
return nil
}
}
// computeDataReflect computes a Set data using reflection, works for any size
// input.
func computeDataReflect(kvs []KeyValue) any {
at := reflect.New(reflect.ArrayOf(len(kvs), keyValueType)).Elem()
for i, keyValue := range kvs {
*(at.Index(i).Addr().Interface().(*KeyValue)) = keyValue
}
return at.Interface()
}
// MarshalJSON returns the JSON encoding of the Set.
func (l *Set) MarshalJSON() ([]byte, error) {
return json.Marshal(l.data)
}
// MarshalLog is the marshaling function used by the logging system to represent this Set.
func (l Set) MarshalLog() any {
kvs := make(map[string]string)
for _, kv := range l.ToSlice() {
kvs[string(kv.Key)] = kv.Value.Emit()
}
return kvs
}
// Len implements sort.Interface.
func (l *Sortable) Len() int {
return len(*l)
}
// Swap implements sort.Interface.
func (l *Sortable) Swap(i, j int) {
(*l)[i], (*l)[j] = (*l)[j], (*l)[i]
}
// Less implements sort.Interface.
func (l *Sortable) Less(i, j int) bool {
return (*l)[i].Key < (*l)[j].Key
}

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vendor/go.opentelemetry.io/otel/attribute/type_string.go generated vendored Normal file
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// Code generated by "stringer -type=Type"; DO NOT EDIT.
package attribute
import "strconv"
func _() {
// An "invalid array index" compiler error signifies that the constant values have changed.
// Re-run the stringer command to generate them again.
var x [1]struct{}
_ = x[INVALID-0]
_ = x[BOOL-1]
_ = x[INT64-2]
_ = x[FLOAT64-3]
_ = x[STRING-4]
_ = x[BOOLSLICE-5]
_ = x[INT64SLICE-6]
_ = x[FLOAT64SLICE-7]
_ = x[STRINGSLICE-8]
}
const _Type_name = "INVALIDBOOLINT64FLOAT64STRINGBOOLSLICEINT64SLICEFLOAT64SLICESTRINGSLICE"
var _Type_index = [...]uint8{0, 7, 11, 16, 23, 29, 38, 48, 60, 71}
func (i Type) String() string {
idx := int(i) - 0
if i < 0 || idx >= len(_Type_index)-1 {
return "Type(" + strconv.FormatInt(int64(i), 10) + ")"
}
return _Type_name[_Type_index[idx]:_Type_index[idx+1]]
}

270
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package attribute // import "go.opentelemetry.io/otel/attribute"
import (
"encoding/json"
"fmt"
"reflect"
"strconv"
attribute "go.opentelemetry.io/otel/attribute/internal"
)
//go:generate stringer -type=Type
// Type describes the type of the data Value holds.
type Type int // nolint: revive // redefines builtin Type.
// Value represents the value part in key-value pairs.
type Value struct {
vtype Type
numeric uint64
stringly string
slice any
}
const (
// INVALID is used for a Value with no value set.
INVALID Type = iota
// BOOL is a boolean Type Value.
BOOL
// INT64 is a 64-bit signed integral Type Value.
INT64
// FLOAT64 is a 64-bit floating point Type Value.
FLOAT64
// STRING is a string Type Value.
STRING
// BOOLSLICE is a slice of booleans Type Value.
BOOLSLICE
// INT64SLICE is a slice of 64-bit signed integral numbers Type Value.
INT64SLICE
// FLOAT64SLICE is a slice of 64-bit floating point numbers Type Value.
FLOAT64SLICE
// STRINGSLICE is a slice of strings Type Value.
STRINGSLICE
)
// BoolValue creates a BOOL Value.
func BoolValue(v bool) Value {
return Value{
vtype: BOOL,
numeric: boolToRaw(v),
}
}
// BoolSliceValue creates a BOOLSLICE Value.
func BoolSliceValue(v []bool) Value {
return Value{vtype: BOOLSLICE, slice: attribute.BoolSliceValue(v)}
}
// IntValue creates an INT64 Value.
func IntValue(v int) Value {
return Int64Value(int64(v))
}
// IntSliceValue creates an INTSLICE Value.
func IntSliceValue(v []int) Value {
var int64Val int64
cp := reflect.New(reflect.ArrayOf(len(v), reflect.TypeOf(int64Val)))
for i, val := range v {
cp.Elem().Index(i).SetInt(int64(val))
}
return Value{
vtype: INT64SLICE,
slice: cp.Elem().Interface(),
}
}
// Int64Value creates an INT64 Value.
func Int64Value(v int64) Value {
return Value{
vtype: INT64,
numeric: int64ToRaw(v),
}
}
// Int64SliceValue creates an INT64SLICE Value.
func Int64SliceValue(v []int64) Value {
return Value{vtype: INT64SLICE, slice: attribute.Int64SliceValue(v)}
}
// Float64Value creates a FLOAT64 Value.
func Float64Value(v float64) Value {
return Value{
vtype: FLOAT64,
numeric: float64ToRaw(v),
}
}
// Float64SliceValue creates a FLOAT64SLICE Value.
func Float64SliceValue(v []float64) Value {
return Value{vtype: FLOAT64SLICE, slice: attribute.Float64SliceValue(v)}
}
// StringValue creates a STRING Value.
func StringValue(v string) Value {
return Value{
vtype: STRING,
stringly: v,
}
}
// StringSliceValue creates a STRINGSLICE Value.
func StringSliceValue(v []string) Value {
return Value{vtype: STRINGSLICE, slice: attribute.StringSliceValue(v)}
}
// Type returns a type of the Value.
func (v Value) Type() Type {
return v.vtype
}
// AsBool returns the bool value. Make sure that the Value's type is
// BOOL.
func (v Value) AsBool() bool {
return rawToBool(v.numeric)
}
// AsBoolSlice returns the []bool value. Make sure that the Value's type is
// BOOLSLICE.
func (v Value) AsBoolSlice() []bool {
if v.vtype != BOOLSLICE {
return nil
}
return v.asBoolSlice()
}
func (v Value) asBoolSlice() []bool {
return attribute.AsBoolSlice(v.slice)
}
// AsInt64 returns the int64 value. Make sure that the Value's type is
// INT64.
func (v Value) AsInt64() int64 {
return rawToInt64(v.numeric)
}
// AsInt64Slice returns the []int64 value. Make sure that the Value's type is
// INT64SLICE.
func (v Value) AsInt64Slice() []int64 {
if v.vtype != INT64SLICE {
return nil
}
return v.asInt64Slice()
}
func (v Value) asInt64Slice() []int64 {
return attribute.AsInt64Slice(v.slice)
}
// AsFloat64 returns the float64 value. Make sure that the Value's
// type is FLOAT64.
func (v Value) AsFloat64() float64 {
return rawToFloat64(v.numeric)
}
// AsFloat64Slice returns the []float64 value. Make sure that the Value's type is
// FLOAT64SLICE.
func (v Value) AsFloat64Slice() []float64 {
if v.vtype != FLOAT64SLICE {
return nil
}
return v.asFloat64Slice()
}
func (v Value) asFloat64Slice() []float64 {
return attribute.AsFloat64Slice(v.slice)
}
// AsString returns the string value. Make sure that the Value's type
// is STRING.
func (v Value) AsString() string {
return v.stringly
}
// AsStringSlice returns the []string value. Make sure that the Value's type is
// STRINGSLICE.
func (v Value) AsStringSlice() []string {
if v.vtype != STRINGSLICE {
return nil
}
return v.asStringSlice()
}
func (v Value) asStringSlice() []string {
return attribute.AsStringSlice(v.slice)
}
type unknownValueType struct{}
// AsInterface returns Value's data as any.
func (v Value) AsInterface() any {
switch v.Type() {
case BOOL:
return v.AsBool()
case BOOLSLICE:
return v.asBoolSlice()
case INT64:
return v.AsInt64()
case INT64SLICE:
return v.asInt64Slice()
case FLOAT64:
return v.AsFloat64()
case FLOAT64SLICE:
return v.asFloat64Slice()
case STRING:
return v.stringly
case STRINGSLICE:
return v.asStringSlice()
}
return unknownValueType{}
}
// Emit returns a string representation of Value's data.
func (v Value) Emit() string {
switch v.Type() {
case BOOLSLICE:
return fmt.Sprint(v.asBoolSlice())
case BOOL:
return strconv.FormatBool(v.AsBool())
case INT64SLICE:
j, err := json.Marshal(v.asInt64Slice())
if err != nil {
return fmt.Sprintf("invalid: %v", v.asInt64Slice())
}
return string(j)
case INT64:
return strconv.FormatInt(v.AsInt64(), 10)
case FLOAT64SLICE:
j, err := json.Marshal(v.asFloat64Slice())
if err != nil {
return fmt.Sprintf("invalid: %v", v.asFloat64Slice())
}
return string(j)
case FLOAT64:
return fmt.Sprint(v.AsFloat64())
case STRINGSLICE:
j, err := json.Marshal(v.asStringSlice())
if err != nil {
return fmt.Sprintf("invalid: %v", v.asStringSlice())
}
return string(j)
case STRING:
return v.stringly
default:
return "unknown"
}
}
// MarshalJSON returns the JSON encoding of the Value.
func (v Value) MarshalJSON() ([]byte, error) {
var jsonVal struct {
Type string
Value any
}
jsonVal.Type = v.Type().String()
jsonVal.Value = v.AsInterface()
return json.Marshal(jsonVal)
}

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vendor/go.opentelemetry.io/otel/baggage/README.md generated vendored Normal file
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# Baggage
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/baggage)](https://pkg.go.dev/go.opentelemetry.io/otel/baggage)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package baggage // import "go.opentelemetry.io/otel/baggage"
import (
"context"
"go.opentelemetry.io/otel/internal/baggage"
)
// ContextWithBaggage returns a copy of parent with baggage.
func ContextWithBaggage(parent context.Context, b Baggage) context.Context {
// Delegate so any hooks for the OpenTracing bridge are handled.
return baggage.ContextWithList(parent, b.list)
}
// ContextWithoutBaggage returns a copy of parent with no baggage.
func ContextWithoutBaggage(parent context.Context) context.Context {
// Delegate so any hooks for the OpenTracing bridge are handled.
return baggage.ContextWithList(parent, nil)
}
// FromContext returns the baggage contained in ctx.
func FromContext(ctx context.Context) Baggage {
// Delegate so any hooks for the OpenTracing bridge are handled.
return Baggage{list: baggage.ListFromContext(ctx)}
}

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vendor/go.opentelemetry.io/otel/baggage/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package baggage provides functionality for storing and retrieving
baggage items in Go context. For propagating the baggage, see the
go.opentelemetry.io/otel/propagation package.
*/
package baggage // import "go.opentelemetry.io/otel/baggage"

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# Codes
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/codes)](https://pkg.go.dev/go.opentelemetry.io/otel/codes)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package codes // import "go.opentelemetry.io/otel/codes"
import (
"encoding/json"
"errors"
"fmt"
"strconv"
)
const (
// Unset is the default status code.
Unset Code = 0
// Error indicates the operation contains an error.
//
// NOTE: The error code in OTLP is 2.
// The value of this enum is only relevant to the internals
// of the Go SDK.
Error Code = 1
// Ok indicates operation has been validated by an Application developers
// or Operator to have completed successfully, or contain no error.
//
// NOTE: The Ok code in OTLP is 1.
// The value of this enum is only relevant to the internals
// of the Go SDK.
Ok Code = 2
maxCode = 3
)
// Code is an 32-bit representation of a status state.
type Code uint32
var codeToStr = map[Code]string{
Unset: "Unset",
Error: "Error",
Ok: "Ok",
}
var strToCode = map[string]Code{
`"Unset"`: Unset,
`"Error"`: Error,
`"Ok"`: Ok,
}
// String returns the Code as a string.
func (c Code) String() string {
return codeToStr[c]
}
// UnmarshalJSON unmarshals b into the Code.
//
// This is based on the functionality in the gRPC codes package:
// https://github.com/grpc/grpc-go/blob/bb64fee312b46ebee26be43364a7a966033521b1/codes/codes.go#L218-L244
func (c *Code) UnmarshalJSON(b []byte) error {
// From json.Unmarshaler: By convention, to approximate the behavior of
// Unmarshal itself, Unmarshalers implement UnmarshalJSON([]byte("null")) as
// a no-op.
if string(b) == "null" {
return nil
}
if c == nil {
return errors.New("nil receiver passed to UnmarshalJSON")
}
var x any
if err := json.Unmarshal(b, &x); err != nil {
return err
}
switch x.(type) {
case string:
if jc, ok := strToCode[string(b)]; ok {
*c = jc
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
case float64:
if ci, err := strconv.ParseUint(string(b), 10, 32); err == nil {
if ci >= maxCode {
return fmt.Errorf("invalid code: %q", ci)
}
*c = Code(ci) // nolint: gosec // Bit size of 32 check above.
return nil
}
return fmt.Errorf("invalid code: %q", string(b))
default:
return fmt.Errorf("invalid code: %q", string(b))
}
}
// MarshalJSON returns c as the JSON encoding of c.
func (c *Code) MarshalJSON() ([]byte, error) {
if c == nil {
return []byte("null"), nil
}
str, ok := codeToStr[*c]
if !ok {
return nil, fmt.Errorf("invalid code: %d", *c)
}
return fmt.Appendf(nil, "%q", str), nil
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package codes defines the canonical error codes used by OpenTelemetry.
It conforms to [the OpenTelemetry
specification](https://github.com/open-telemetry/opentelemetry-specification/blob/v1.20.0/specification/trace/api.md#set-status).
*/
package codes // import "go.opentelemetry.io/otel/codes"

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# This is a renovate-friendly source of Docker images.
FROM python:3.13.6-slim-bullseye@sha256:e98b521460ee75bca92175c16247bdf7275637a8faaeb2bcfa19d879ae5c4b9a AS python
FROM otel/weaver:v0.19.0@sha256:3d20814cef548f1d31f27f054fb4cd6a05125641a9f7cc29fc7eb234e8052cd9 AS weaver
FROM avtodev/markdown-lint:v1@sha256:6aeedc2f49138ce7a1cd0adffc1b1c0321b841dc2102408967d9301c031949ee AS markdown

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vendor/go.opentelemetry.io/otel/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package otel provides global access to the OpenTelemetry API. The subpackages of
the otel package provide an implementation of the OpenTelemetry API.
The provided API is used to instrument code and measure data about that code's
performance and operation. The measured data, by default, is not processed or
transmitted anywhere. An implementation of the OpenTelemetry SDK, like the
default SDK implementation (go.opentelemetry.io/otel/sdk), and associated
exporters are used to process and transport this data.
To read the getting started guide, see https://opentelemetry.io/docs/languages/go/getting-started/.
To read more about tracing, see go.opentelemetry.io/otel/trace.
To read more about metrics, see go.opentelemetry.io/otel/metric.
To read more about logs, see go.opentelemetry.io/otel/log.
To read more about propagation, see go.opentelemetry.io/otel/propagation and
go.opentelemetry.io/otel/baggage.
*/
package otel // import "go.opentelemetry.io/otel"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
// ErrorHandler handles irremediable events.
type ErrorHandler interface {
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Handle handles any error deemed irremediable by an OpenTelemetry
// component.
Handle(error)
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
}
// ErrorHandlerFunc is a convenience adapter to allow the use of a function
// as an ErrorHandler.
type ErrorHandlerFunc func(error)
var _ ErrorHandler = ErrorHandlerFunc(nil)
// Handle handles the irremediable error by calling the ErrorHandlerFunc itself.
func (f ErrorHandlerFunc) Handle(err error) {
f(err)
}

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vendor/go.opentelemetry.io/otel/handler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
)
// Compile-time check global.ErrDelegator implements ErrorHandler.
var _ ErrorHandler = (*global.ErrDelegator)(nil)
// GetErrorHandler returns the global ErrorHandler instance.
//
// The default ErrorHandler instance returned will log all errors to STDERR
// until an override ErrorHandler is set with SetErrorHandler. All
// ErrorHandler returned prior to this will automatically forward errors to
// the set instance instead of logging.
//
// Subsequent calls to SetErrorHandler after the first will not forward errors
// to the new ErrorHandler for prior returned instances.
func GetErrorHandler() ErrorHandler { return global.GetErrorHandler() }
// SetErrorHandler sets the global ErrorHandler to h.
//
// The first time this is called all ErrorHandler previously returned from
// GetErrorHandler will send errors to h instead of the default logging
// ErrorHandler. Subsequent calls will set the global ErrorHandler, but not
// delegate errors to h.
func SetErrorHandler(h ErrorHandler) { global.SetErrorHandler(h) }
// Handle is a convenience function for GetErrorHandler().Handle(err).
func Handle(err error) { global.GetErrorHandler().Handle(err) }

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vendor/go.opentelemetry.io/otel/internal/baggage/baggage.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package baggage provides base types and functionality to store and retrieve
baggage in Go context. This package exists because the OpenTracing bridge to
OpenTelemetry needs to synchronize state whenever baggage for a context is
modified and that context contains an OpenTracing span. If it were not for
this need this package would not need to exist and the
`go.opentelemetry.io/otel/baggage` package would be the singular place where
W3C baggage is handled.
*/
package baggage // import "go.opentelemetry.io/otel/internal/baggage"
// List is the collection of baggage members. The W3C allows for duplicates,
// but OpenTelemetry does not, therefore, this is represented as a map.
type List map[string]Item
// Item is the value and metadata properties part of a list-member.
type Item struct {
Value string
Properties []Property
}
// Property is a metadata entry for a list-member.
type Property struct {
Key, Value string
// HasValue indicates if a zero-value value means the property does not
// have a value or if it was the zero-value.
HasValue bool
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package baggage // import "go.opentelemetry.io/otel/internal/baggage"
import "context"
type baggageContextKeyType int
const baggageKey baggageContextKeyType = iota
// SetHookFunc is a callback called when storing baggage in the context.
type SetHookFunc func(context.Context, List) context.Context
// GetHookFunc is a callback called when getting baggage from the context.
type GetHookFunc func(context.Context, List) List
type baggageState struct {
list List
setHook SetHookFunc
getHook GetHookFunc
}
// ContextWithSetHook returns a copy of parent with hook configured to be
// invoked every time ContextWithBaggage is called.
//
// Passing nil SetHookFunc creates a context with no set hook to call.
func ContextWithSetHook(parent context.Context, hook SetHookFunc) context.Context {
var s baggageState
if v, ok := parent.Value(baggageKey).(baggageState); ok {
s = v
}
s.setHook = hook
return context.WithValue(parent, baggageKey, s)
}
// ContextWithGetHook returns a copy of parent with hook configured to be
// invoked every time FromContext is called.
//
// Passing nil GetHookFunc creates a context with no get hook to call.
func ContextWithGetHook(parent context.Context, hook GetHookFunc) context.Context {
var s baggageState
if v, ok := parent.Value(baggageKey).(baggageState); ok {
s = v
}
s.getHook = hook
return context.WithValue(parent, baggageKey, s)
}
// ContextWithList returns a copy of parent with baggage. Passing nil list
// returns a context without any baggage.
func ContextWithList(parent context.Context, list List) context.Context {
var s baggageState
if v, ok := parent.Value(baggageKey).(baggageState); ok {
s = v
}
s.list = list
ctx := context.WithValue(parent, baggageKey, s)
if s.setHook != nil {
ctx = s.setHook(ctx, list)
}
return ctx
}
// ListFromContext returns the baggage contained in ctx.
func ListFromContext(ctx context.Context) List {
switch v := ctx.Value(baggageKey).(type) {
case baggageState:
if v.getHook != nil {
return v.getHook(ctx, v.list)
}
return v.list
default:
return nil
}
}

37
vendor/go.opentelemetry.io/otel/internal/global/handler.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package global provides the OpenTelemetry global API.
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"log"
"sync/atomic"
)
// ErrorHandler handles irremediable events.
type ErrorHandler interface {
// Handle handles any error deemed irremediable by an OpenTelemetry
// component.
Handle(error)
}
type ErrDelegator struct {
delegate atomic.Pointer[ErrorHandler]
}
// Compile-time check that delegator implements ErrorHandler.
var _ ErrorHandler = (*ErrDelegator)(nil)
func (d *ErrDelegator) Handle(err error) {
if eh := d.delegate.Load(); eh != nil {
(*eh).Handle(err)
return
}
log.Print(err)
}
// setDelegate sets the ErrorHandler delegate.
func (d *ErrDelegator) setDelegate(eh ErrorHandler) {
d.delegate.Store(&eh)
}

412
vendor/go.opentelemetry.io/otel/internal/global/instruments.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"context"
"sync/atomic"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/embedded"
)
// unwrapper unwraps to return the underlying instrument implementation.
type unwrapper interface {
unwrap() metric.Observable
}
type afCounter struct {
embedded.Float64ObservableCounter
metric.Float64Observable
name string
opts []metric.Float64ObservableCounterOption
delegate atomic.Value // metric.Float64ObservableCounter
}
var (
_ unwrapper = (*afCounter)(nil)
_ metric.Float64ObservableCounter = (*afCounter)(nil)
)
func (i *afCounter) setDelegate(m metric.Meter) {
ctr, err := m.Float64ObservableCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *afCounter) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Float64ObservableCounter)
}
return nil
}
type afUpDownCounter struct {
embedded.Float64ObservableUpDownCounter
metric.Float64Observable
name string
opts []metric.Float64ObservableUpDownCounterOption
delegate atomic.Value // metric.Float64ObservableUpDownCounter
}
var (
_ unwrapper = (*afUpDownCounter)(nil)
_ metric.Float64ObservableUpDownCounter = (*afUpDownCounter)(nil)
)
func (i *afUpDownCounter) setDelegate(m metric.Meter) {
ctr, err := m.Float64ObservableUpDownCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *afUpDownCounter) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Float64ObservableUpDownCounter)
}
return nil
}
type afGauge struct {
embedded.Float64ObservableGauge
metric.Float64Observable
name string
opts []metric.Float64ObservableGaugeOption
delegate atomic.Value // metric.Float64ObservableGauge
}
var (
_ unwrapper = (*afGauge)(nil)
_ metric.Float64ObservableGauge = (*afGauge)(nil)
)
func (i *afGauge) setDelegate(m metric.Meter) {
ctr, err := m.Float64ObservableGauge(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *afGauge) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Float64ObservableGauge)
}
return nil
}
type aiCounter struct {
embedded.Int64ObservableCounter
metric.Int64Observable
name string
opts []metric.Int64ObservableCounterOption
delegate atomic.Value // metric.Int64ObservableCounter
}
var (
_ unwrapper = (*aiCounter)(nil)
_ metric.Int64ObservableCounter = (*aiCounter)(nil)
)
func (i *aiCounter) setDelegate(m metric.Meter) {
ctr, err := m.Int64ObservableCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *aiCounter) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Int64ObservableCounter)
}
return nil
}
type aiUpDownCounter struct {
embedded.Int64ObservableUpDownCounter
metric.Int64Observable
name string
opts []metric.Int64ObservableUpDownCounterOption
delegate atomic.Value // metric.Int64ObservableUpDownCounter
}
var (
_ unwrapper = (*aiUpDownCounter)(nil)
_ metric.Int64ObservableUpDownCounter = (*aiUpDownCounter)(nil)
)
func (i *aiUpDownCounter) setDelegate(m metric.Meter) {
ctr, err := m.Int64ObservableUpDownCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *aiUpDownCounter) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Int64ObservableUpDownCounter)
}
return nil
}
type aiGauge struct {
embedded.Int64ObservableGauge
metric.Int64Observable
name string
opts []metric.Int64ObservableGaugeOption
delegate atomic.Value // metric.Int64ObservableGauge
}
var (
_ unwrapper = (*aiGauge)(nil)
_ metric.Int64ObservableGauge = (*aiGauge)(nil)
)
func (i *aiGauge) setDelegate(m metric.Meter) {
ctr, err := m.Int64ObservableGauge(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *aiGauge) unwrap() metric.Observable {
if ctr := i.delegate.Load(); ctr != nil {
return ctr.(metric.Int64ObservableGauge)
}
return nil
}
// Sync Instruments.
type sfCounter struct {
embedded.Float64Counter
name string
opts []metric.Float64CounterOption
delegate atomic.Value // metric.Float64Counter
}
var _ metric.Float64Counter = (*sfCounter)(nil)
func (i *sfCounter) setDelegate(m metric.Meter) {
ctr, err := m.Float64Counter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *sfCounter) Add(ctx context.Context, incr float64, opts ...metric.AddOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Float64Counter).Add(ctx, incr, opts...)
}
}
type sfUpDownCounter struct {
embedded.Float64UpDownCounter
name string
opts []metric.Float64UpDownCounterOption
delegate atomic.Value // metric.Float64UpDownCounter
}
var _ metric.Float64UpDownCounter = (*sfUpDownCounter)(nil)
func (i *sfUpDownCounter) setDelegate(m metric.Meter) {
ctr, err := m.Float64UpDownCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *sfUpDownCounter) Add(ctx context.Context, incr float64, opts ...metric.AddOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Float64UpDownCounter).Add(ctx, incr, opts...)
}
}
type sfHistogram struct {
embedded.Float64Histogram
name string
opts []metric.Float64HistogramOption
delegate atomic.Value // metric.Float64Histogram
}
var _ metric.Float64Histogram = (*sfHistogram)(nil)
func (i *sfHistogram) setDelegate(m metric.Meter) {
ctr, err := m.Float64Histogram(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *sfHistogram) Record(ctx context.Context, x float64, opts ...metric.RecordOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Float64Histogram).Record(ctx, x, opts...)
}
}
type sfGauge struct {
embedded.Float64Gauge
name string
opts []metric.Float64GaugeOption
delegate atomic.Value // metric.Float64Gauge
}
var _ metric.Float64Gauge = (*sfGauge)(nil)
func (i *sfGauge) setDelegate(m metric.Meter) {
ctr, err := m.Float64Gauge(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *sfGauge) Record(ctx context.Context, x float64, opts ...metric.RecordOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Float64Gauge).Record(ctx, x, opts...)
}
}
type siCounter struct {
embedded.Int64Counter
name string
opts []metric.Int64CounterOption
delegate atomic.Value // metric.Int64Counter
}
var _ metric.Int64Counter = (*siCounter)(nil)
func (i *siCounter) setDelegate(m metric.Meter) {
ctr, err := m.Int64Counter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *siCounter) Add(ctx context.Context, x int64, opts ...metric.AddOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Int64Counter).Add(ctx, x, opts...)
}
}
type siUpDownCounter struct {
embedded.Int64UpDownCounter
name string
opts []metric.Int64UpDownCounterOption
delegate atomic.Value // metric.Int64UpDownCounter
}
var _ metric.Int64UpDownCounter = (*siUpDownCounter)(nil)
func (i *siUpDownCounter) setDelegate(m metric.Meter) {
ctr, err := m.Int64UpDownCounter(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *siUpDownCounter) Add(ctx context.Context, x int64, opts ...metric.AddOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Int64UpDownCounter).Add(ctx, x, opts...)
}
}
type siHistogram struct {
embedded.Int64Histogram
name string
opts []metric.Int64HistogramOption
delegate atomic.Value // metric.Int64Histogram
}
var _ metric.Int64Histogram = (*siHistogram)(nil)
func (i *siHistogram) setDelegate(m metric.Meter) {
ctr, err := m.Int64Histogram(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *siHistogram) Record(ctx context.Context, x int64, opts ...metric.RecordOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Int64Histogram).Record(ctx, x, opts...)
}
}
type siGauge struct {
embedded.Int64Gauge
name string
opts []metric.Int64GaugeOption
delegate atomic.Value // metric.Int64Gauge
}
var _ metric.Int64Gauge = (*siGauge)(nil)
func (i *siGauge) setDelegate(m metric.Meter) {
ctr, err := m.Int64Gauge(i.name, i.opts...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
i.delegate.Store(ctr)
}
func (i *siGauge) Record(ctx context.Context, x int64, opts ...metric.RecordOption) {
if ctr := i.delegate.Load(); ctr != nil {
ctr.(metric.Int64Gauge).Record(ctx, x, opts...)
}
}

62
vendor/go.opentelemetry.io/otel/internal/global/internal_logging.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"log"
"os"
"sync/atomic"
"github.com/go-logr/logr"
"github.com/go-logr/stdr"
)
// globalLogger holds a reference to the [logr.Logger] used within
// go.opentelemetry.io/otel.
//
// The default logger uses stdr which is backed by the standard `log.Logger`
// interface. This logger will only show messages at the Error Level.
var globalLogger = func() *atomic.Pointer[logr.Logger] {
l := stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile))
p := new(atomic.Pointer[logr.Logger])
p.Store(&l)
return p
}()
// SetLogger sets the global Logger to l.
//
// To see Warn messages use a logger with `l.V(1).Enabled() == true`
// To see Info messages use a logger with `l.V(4).Enabled() == true`
// To see Debug messages use a logger with `l.V(8).Enabled() == true`.
func SetLogger(l logr.Logger) {
globalLogger.Store(&l)
}
// GetLogger returns the global logger.
func GetLogger() logr.Logger {
return *globalLogger.Load()
}
// Info prints messages about the general state of the API or SDK.
// This should usually be less than 5 messages a minute.
func Info(msg string, keysAndValues ...any) {
GetLogger().V(4).Info(msg, keysAndValues...)
}
// Error prints messages about exceptional states of the API or SDK.
func Error(err error, msg string, keysAndValues ...any) {
GetLogger().Error(err, msg, keysAndValues...)
}
// Debug prints messages about all internal changes in the API or SDK.
func Debug(msg string, keysAndValues ...any) {
GetLogger().V(8).Info(msg, keysAndValues...)
}
// Warn prints messages about warnings in the API or SDK.
// Not an error but is likely more important than an informational event.
func Warn(msg string, keysAndValues ...any) {
GetLogger().V(1).Info(msg, keysAndValues...)
}

625
vendor/go.opentelemetry.io/otel/internal/global/meter.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"container/list"
"context"
"reflect"
"sync"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/embedded"
)
// meterProvider is a placeholder for a configured SDK MeterProvider.
//
// All MeterProvider functionality is forwarded to a delegate once
// configured.
type meterProvider struct {
embedded.MeterProvider
mtx sync.Mutex
meters map[il]*meter
delegate metric.MeterProvider
}
// setDelegate configures p to delegate all MeterProvider functionality to
// provider.
//
// All Meters provided prior to this function call are switched out to be
// Meters provided by provider. All instruments and callbacks are recreated and
// delegated.
//
// It is guaranteed by the caller that this happens only once.
func (p *meterProvider) setDelegate(provider metric.MeterProvider) {
p.mtx.Lock()
defer p.mtx.Unlock()
p.delegate = provider
if len(p.meters) == 0 {
return
}
for _, meter := range p.meters {
meter.setDelegate(provider)
}
p.meters = nil
}
// Meter implements MeterProvider.
func (p *meterProvider) Meter(name string, opts ...metric.MeterOption) metric.Meter {
p.mtx.Lock()
defer p.mtx.Unlock()
if p.delegate != nil {
return p.delegate.Meter(name, opts...)
}
// At this moment it is guaranteed that no sdk is installed, save the meter in the meters map.
c := metric.NewMeterConfig(opts...)
key := il{
name: name,
version: c.InstrumentationVersion(),
schema: c.SchemaURL(),
attrs: c.InstrumentationAttributes(),
}
if p.meters == nil {
p.meters = make(map[il]*meter)
}
if val, ok := p.meters[key]; ok {
return val
}
t := &meter{name: name, opts: opts, instruments: make(map[instID]delegatedInstrument)}
p.meters[key] = t
return t
}
// meter is a placeholder for a metric.Meter.
//
// All Meter functionality is forwarded to a delegate once configured.
// Otherwise, all functionality is forwarded to a NoopMeter.
type meter struct {
embedded.Meter
name string
opts []metric.MeterOption
mtx sync.Mutex
instruments map[instID]delegatedInstrument
registry list.List
delegate metric.Meter
}
type delegatedInstrument interface {
setDelegate(metric.Meter)
}
// instID are the identifying properties of an instrument.
type instID struct {
// name is the name of the stream.
name string
// description is the description of the stream.
description string
// kind defines the functional group of the instrument.
kind reflect.Type
// unit is the unit of the stream.
unit string
}
// setDelegate configures m to delegate all Meter functionality to Meters
// created by provider.
//
// All subsequent calls to the Meter methods will be passed to the delegate.
//
// It is guaranteed by the caller that this happens only once.
func (m *meter) setDelegate(provider metric.MeterProvider) {
m.mtx.Lock()
defer m.mtx.Unlock()
meter := provider.Meter(m.name, m.opts...)
m.delegate = meter
for _, inst := range m.instruments {
inst.setDelegate(meter)
}
var n *list.Element
for e := m.registry.Front(); e != nil; e = n {
r := e.Value.(*registration)
r.setDelegate(meter)
n = e.Next()
m.registry.Remove(e)
}
m.instruments = nil
m.registry.Init()
}
func (m *meter) Int64Counter(name string, options ...metric.Int64CounterOption) (metric.Int64Counter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64Counter(name, options...)
}
cfg := metric.NewInt64CounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*siCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64Counter), nil
}
i := &siCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64UpDownCounter(
name string,
options ...metric.Int64UpDownCounterOption,
) (metric.Int64UpDownCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64UpDownCounter(name, options...)
}
cfg := metric.NewInt64UpDownCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*siUpDownCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64UpDownCounter), nil
}
i := &siUpDownCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64Histogram(name string, options ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64Histogram(name, options...)
}
cfg := metric.NewInt64HistogramConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*siHistogram)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64Histogram), nil
}
i := &siHistogram{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64Gauge(name string, options ...metric.Int64GaugeOption) (metric.Int64Gauge, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64Gauge(name, options...)
}
cfg := metric.NewInt64GaugeConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*siGauge)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64Gauge), nil
}
i := &siGauge{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64ObservableCounter(
name string,
options ...metric.Int64ObservableCounterOption,
) (metric.Int64ObservableCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64ObservableCounter(name, options...)
}
cfg := metric.NewInt64ObservableCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*aiCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64ObservableCounter), nil
}
i := &aiCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64ObservableUpDownCounter(
name string,
options ...metric.Int64ObservableUpDownCounterOption,
) (metric.Int64ObservableUpDownCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64ObservableUpDownCounter(name, options...)
}
cfg := metric.NewInt64ObservableUpDownCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*aiUpDownCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64ObservableUpDownCounter), nil
}
i := &aiUpDownCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Int64ObservableGauge(
name string,
options ...metric.Int64ObservableGaugeOption,
) (metric.Int64ObservableGauge, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Int64ObservableGauge(name, options...)
}
cfg := metric.NewInt64ObservableGaugeConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*aiGauge)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Int64ObservableGauge), nil
}
i := &aiGauge{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64Counter(name string, options ...metric.Float64CounterOption) (metric.Float64Counter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64Counter(name, options...)
}
cfg := metric.NewFloat64CounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*sfCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64Counter), nil
}
i := &sfCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64UpDownCounter(
name string,
options ...metric.Float64UpDownCounterOption,
) (metric.Float64UpDownCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64UpDownCounter(name, options...)
}
cfg := metric.NewFloat64UpDownCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*sfUpDownCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64UpDownCounter), nil
}
i := &sfUpDownCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64Histogram(
name string,
options ...metric.Float64HistogramOption,
) (metric.Float64Histogram, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64Histogram(name, options...)
}
cfg := metric.NewFloat64HistogramConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*sfHistogram)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64Histogram), nil
}
i := &sfHistogram{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64Gauge(name string, options ...metric.Float64GaugeOption) (metric.Float64Gauge, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64Gauge(name, options...)
}
cfg := metric.NewFloat64GaugeConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*sfGauge)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64Gauge), nil
}
i := &sfGauge{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64ObservableCounter(
name string,
options ...metric.Float64ObservableCounterOption,
) (metric.Float64ObservableCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64ObservableCounter(name, options...)
}
cfg := metric.NewFloat64ObservableCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*afCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64ObservableCounter), nil
}
i := &afCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64ObservableUpDownCounter(
name string,
options ...metric.Float64ObservableUpDownCounterOption,
) (metric.Float64ObservableUpDownCounter, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64ObservableUpDownCounter(name, options...)
}
cfg := metric.NewFloat64ObservableUpDownCounterConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*afUpDownCounter)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64ObservableUpDownCounter), nil
}
i := &afUpDownCounter{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
func (m *meter) Float64ObservableGauge(
name string,
options ...metric.Float64ObservableGaugeOption,
) (metric.Float64ObservableGauge, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.Float64ObservableGauge(name, options...)
}
cfg := metric.NewFloat64ObservableGaugeConfig(options...)
id := instID{
name: name,
kind: reflect.TypeOf((*afGauge)(nil)),
description: cfg.Description(),
unit: cfg.Unit(),
}
if f, ok := m.instruments[id]; ok {
return f.(metric.Float64ObservableGauge), nil
}
i := &afGauge{name: name, opts: options}
m.instruments[id] = i
return i, nil
}
// RegisterCallback captures the function that will be called during Collect.
func (m *meter) RegisterCallback(f metric.Callback, insts ...metric.Observable) (metric.Registration, error) {
m.mtx.Lock()
defer m.mtx.Unlock()
if m.delegate != nil {
return m.delegate.RegisterCallback(unwrapCallback(f), unwrapInstruments(insts)...)
}
reg := &registration{instruments: insts, function: f}
e := m.registry.PushBack(reg)
reg.unreg = func() error {
m.mtx.Lock()
_ = m.registry.Remove(e)
m.mtx.Unlock()
return nil
}
return reg, nil
}
func unwrapInstruments(instruments []metric.Observable) []metric.Observable {
out := make([]metric.Observable, 0, len(instruments))
for _, inst := range instruments {
if in, ok := inst.(unwrapper); ok {
out = append(out, in.unwrap())
} else {
out = append(out, inst)
}
}
return out
}
type registration struct {
embedded.Registration
instruments []metric.Observable
function metric.Callback
unreg func() error
unregMu sync.Mutex
}
type unwrapObs struct {
embedded.Observer
obs metric.Observer
}
// unwrapFloat64Observable returns an expected metric.Float64Observable after
// unwrapping the global object.
func unwrapFloat64Observable(inst metric.Float64Observable) metric.Float64Observable {
if unwrapped, ok := inst.(unwrapper); ok {
if floatObs, ok := unwrapped.unwrap().(metric.Float64Observable); ok {
// Note: if the unwrapped object does not
// unwrap as an observable for either of the
// predicates here, it means an internal bug in
// this package. We avoid logging an error in
// this case, because the SDK has to try its
// own type conversion on the object. The SDK
// will see this and be forced to respond with
// its own error.
//
// This code uses a double-nested if statement
// to avoid creating a branch that is
// impossible to cover.
inst = floatObs
}
}
return inst
}
// unwrapInt64Observable returns an expected metric.Int64Observable after
// unwrapping the global object.
func unwrapInt64Observable(inst metric.Int64Observable) metric.Int64Observable {
if unwrapped, ok := inst.(unwrapper); ok {
if unint, ok := unwrapped.unwrap().(metric.Int64Observable); ok {
// See the comment in unwrapFloat64Observable().
inst = unint
}
}
return inst
}
func (uo *unwrapObs) ObserveFloat64(inst metric.Float64Observable, value float64, opts ...metric.ObserveOption) {
uo.obs.ObserveFloat64(unwrapFloat64Observable(inst), value, opts...)
}
func (uo *unwrapObs) ObserveInt64(inst metric.Int64Observable, value int64, opts ...metric.ObserveOption) {
uo.obs.ObserveInt64(unwrapInt64Observable(inst), value, opts...)
}
func unwrapCallback(f metric.Callback) metric.Callback {
return func(ctx context.Context, obs metric.Observer) error {
return f(ctx, &unwrapObs{obs: obs})
}
}
func (c *registration) setDelegate(m metric.Meter) {
c.unregMu.Lock()
defer c.unregMu.Unlock()
if c.unreg == nil {
// Unregister already called.
return
}
reg, err := m.RegisterCallback(unwrapCallback(c.function), unwrapInstruments(c.instruments)...)
if err != nil {
GetErrorHandler().Handle(err)
return
}
c.unreg = reg.Unregister
}
func (c *registration) Unregister() error {
c.unregMu.Lock()
defer c.unregMu.Unlock()
if c.unreg == nil {
// Unregister already called.
return nil
}
var err error
err, c.unreg = c.unreg(), nil
return err
}

71
vendor/go.opentelemetry.io/otel/internal/global/propagator.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"context"
"sync"
"go.opentelemetry.io/otel/propagation"
)
// textMapPropagator is a default TextMapPropagator that delegates calls to a
// registered delegate if one is set, otherwise it defaults to delegating the
// calls to a the default no-op propagation.TextMapPropagator.
type textMapPropagator struct {
mtx sync.Mutex
once sync.Once
delegate propagation.TextMapPropagator
noop propagation.TextMapPropagator
}
// Compile-time guarantee that textMapPropagator implements the
// propagation.TextMapPropagator interface.
var _ propagation.TextMapPropagator = (*textMapPropagator)(nil)
func newTextMapPropagator() *textMapPropagator {
return &textMapPropagator{
noop: propagation.NewCompositeTextMapPropagator(),
}
}
// SetDelegate sets a delegate propagation.TextMapPropagator that all calls are
// forwarded to. Delegation can only be performed once, all subsequent calls
// perform no delegation.
func (p *textMapPropagator) SetDelegate(delegate propagation.TextMapPropagator) {
if delegate == nil {
return
}
p.mtx.Lock()
p.once.Do(func() { p.delegate = delegate })
p.mtx.Unlock()
}
// effectiveDelegate returns the current delegate of p if one is set,
// otherwise the default noop TextMapPropagator is returned. This method
// can be called concurrently.
func (p *textMapPropagator) effectiveDelegate() propagation.TextMapPropagator {
p.mtx.Lock()
defer p.mtx.Unlock()
if p.delegate != nil {
return p.delegate
}
return p.noop
}
// Inject set cross-cutting concerns from the Context into the carrier.
func (p *textMapPropagator) Inject(ctx context.Context, carrier propagation.TextMapCarrier) {
p.effectiveDelegate().Inject(ctx, carrier)
}
// Extract reads cross-cutting concerns from the carrier into a Context.
func (p *textMapPropagator) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context {
return p.effectiveDelegate().Extract(ctx, carrier)
}
// Fields returns the keys whose values are set with Inject.
func (p *textMapPropagator) Fields() []string {
return p.effectiveDelegate().Fields()
}

199
vendor/go.opentelemetry.io/otel/internal/global/state.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
import (
"errors"
"sync"
"sync/atomic"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/trace"
)
type (
errorHandlerHolder struct {
eh ErrorHandler
}
tracerProviderHolder struct {
tp trace.TracerProvider
}
propagatorsHolder struct {
tm propagation.TextMapPropagator
}
meterProviderHolder struct {
mp metric.MeterProvider
}
)
var (
globalErrorHandler = defaultErrorHandler()
globalTracer = defaultTracerValue()
globalPropagators = defaultPropagatorsValue()
globalMeterProvider = defaultMeterProvider()
delegateErrorHandlerOnce sync.Once
delegateTraceOnce sync.Once
delegateTextMapPropagatorOnce sync.Once
delegateMeterOnce sync.Once
)
// GetErrorHandler returns the global ErrorHandler instance.
//
// The default ErrorHandler instance returned will log all errors to STDERR
// until an override ErrorHandler is set with SetErrorHandler. All
// ErrorHandler returned prior to this will automatically forward errors to
// the set instance instead of logging.
//
// Subsequent calls to SetErrorHandler after the first will not forward errors
// to the new ErrorHandler for prior returned instances.
func GetErrorHandler() ErrorHandler {
return globalErrorHandler.Load().(errorHandlerHolder).eh
}
// SetErrorHandler sets the global ErrorHandler to h.
//
// The first time this is called all ErrorHandler previously returned from
// GetErrorHandler will send errors to h instead of the default logging
// ErrorHandler. Subsequent calls will set the global ErrorHandler, but not
// delegate errors to h.
func SetErrorHandler(h ErrorHandler) {
current := GetErrorHandler()
if _, cOk := current.(*ErrDelegator); cOk {
if _, ehOk := h.(*ErrDelegator); ehOk && current == h {
// Do not assign to the delegate of the default ErrDelegator to be
// itself.
Error(
errors.New("no ErrorHandler delegate configured"),
"ErrorHandler remains its current value.",
)
return
}
}
delegateErrorHandlerOnce.Do(func() {
if def, ok := current.(*ErrDelegator); ok {
def.setDelegate(h)
}
})
globalErrorHandler.Store(errorHandlerHolder{eh: h})
}
// TracerProvider is the internal implementation for global.TracerProvider.
func TracerProvider() trace.TracerProvider {
return globalTracer.Load().(tracerProviderHolder).tp
}
// SetTracerProvider is the internal implementation for global.SetTracerProvider.
func SetTracerProvider(tp trace.TracerProvider) {
current := TracerProvider()
if _, cOk := current.(*tracerProvider); cOk {
if _, tpOk := tp.(*tracerProvider); tpOk && current == tp {
// Do not assign the default delegating TracerProvider to delegate
// to itself.
Error(
errors.New("no delegate configured in tracer provider"),
"Setting tracer provider to its current value. No delegate will be configured",
)
return
}
}
delegateTraceOnce.Do(func() {
if def, ok := current.(*tracerProvider); ok {
def.setDelegate(tp)
}
})
globalTracer.Store(tracerProviderHolder{tp: tp})
}
// TextMapPropagator is the internal implementation for global.TextMapPropagator.
func TextMapPropagator() propagation.TextMapPropagator {
return globalPropagators.Load().(propagatorsHolder).tm
}
// SetTextMapPropagator is the internal implementation for global.SetTextMapPropagator.
func SetTextMapPropagator(p propagation.TextMapPropagator) {
current := TextMapPropagator()
if _, cOk := current.(*textMapPropagator); cOk {
if _, pOk := p.(*textMapPropagator); pOk && current == p {
// Do not assign the default delegating TextMapPropagator to
// delegate to itself.
Error(
errors.New("no delegate configured in text map propagator"),
"Setting text map propagator to its current value. No delegate will be configured",
)
return
}
}
// For the textMapPropagator already returned by TextMapPropagator
// delegate to p.
delegateTextMapPropagatorOnce.Do(func() {
if def, ok := current.(*textMapPropagator); ok {
def.SetDelegate(p)
}
})
// Return p when subsequent calls to TextMapPropagator are made.
globalPropagators.Store(propagatorsHolder{tm: p})
}
// MeterProvider is the internal implementation for global.MeterProvider.
func MeterProvider() metric.MeterProvider {
return globalMeterProvider.Load().(meterProviderHolder).mp
}
// SetMeterProvider is the internal implementation for global.SetMeterProvider.
func SetMeterProvider(mp metric.MeterProvider) {
current := MeterProvider()
if _, cOk := current.(*meterProvider); cOk {
if _, mpOk := mp.(*meterProvider); mpOk && current == mp {
// Do not assign the default delegating MeterProvider to delegate
// to itself.
Error(
errors.New("no delegate configured in meter provider"),
"Setting meter provider to its current value. No delegate will be configured",
)
return
}
}
delegateMeterOnce.Do(func() {
if def, ok := current.(*meterProvider); ok {
def.setDelegate(mp)
}
})
globalMeterProvider.Store(meterProviderHolder{mp: mp})
}
func defaultErrorHandler() *atomic.Value {
v := &atomic.Value{}
v.Store(errorHandlerHolder{eh: &ErrDelegator{}})
return v
}
func defaultTracerValue() *atomic.Value {
v := &atomic.Value{}
v.Store(tracerProviderHolder{tp: &tracerProvider{}})
return v
}
func defaultPropagatorsValue() *atomic.Value {
v := &atomic.Value{}
v.Store(propagatorsHolder{tm: newTextMapPropagator()})
return v
}
func defaultMeterProvider() *atomic.Value {
v := &atomic.Value{}
v.Store(meterProviderHolder{mp: &meterProvider{}})
return v
}

232
vendor/go.opentelemetry.io/otel/internal/global/trace.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package global // import "go.opentelemetry.io/otel/internal/global"
/*
This file contains the forwarding implementation of the TracerProvider used as
the default global instance. Prior to initialization of an SDK, Tracers
returned by the global TracerProvider will provide no-op functionality. This
means that all Span created prior to initialization are no-op Spans.
Once an SDK has been initialized, all provided no-op Tracers are swapped for
Tracers provided by the SDK defined TracerProvider. However, any Span started
prior to this initialization does not change its behavior. Meaning, the Span
remains a no-op Span.
The implementation to track and swap Tracers locks all new Tracer creation
until the swap is complete. This assumes that this operation is not
performance-critical. If that assumption is incorrect, be sure to configure an
SDK prior to any Tracer creation.
*/
import (
"context"
"sync"
"sync/atomic"
"go.opentelemetry.io/auto/sdk"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/trace"
"go.opentelemetry.io/otel/trace/embedded"
)
// tracerProvider is a placeholder for a configured SDK TracerProvider.
//
// All TracerProvider functionality is forwarded to a delegate once
// configured.
type tracerProvider struct {
embedded.TracerProvider
mtx sync.Mutex
tracers map[il]*tracer
delegate trace.TracerProvider
}
// Compile-time guarantee that tracerProvider implements the TracerProvider
// interface.
var _ trace.TracerProvider = &tracerProvider{}
// setDelegate configures p to delegate all TracerProvider functionality to
// provider.
//
// All Tracers provided prior to this function call are switched out to be
// Tracers provided by provider.
//
// It is guaranteed by the caller that this happens only once.
func (p *tracerProvider) setDelegate(provider trace.TracerProvider) {
p.mtx.Lock()
defer p.mtx.Unlock()
p.delegate = provider
if len(p.tracers) == 0 {
return
}
for _, t := range p.tracers {
t.setDelegate(provider)
}
p.tracers = nil
}
// Tracer implements TracerProvider.
func (p *tracerProvider) Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
p.mtx.Lock()
defer p.mtx.Unlock()
if p.delegate != nil {
return p.delegate.Tracer(name, opts...)
}
// At this moment it is guaranteed that no sdk is installed, save the tracer in the tracers map.
c := trace.NewTracerConfig(opts...)
key := il{
name: name,
version: c.InstrumentationVersion(),
schema: c.SchemaURL(),
attrs: c.InstrumentationAttributes(),
}
if p.tracers == nil {
p.tracers = make(map[il]*tracer)
}
if val, ok := p.tracers[key]; ok {
return val
}
t := &tracer{name: name, opts: opts, provider: p}
p.tracers[key] = t
return t
}
type il struct {
name string
version string
schema string
attrs attribute.Set
}
// tracer is a placeholder for a trace.Tracer.
//
// All Tracer functionality is forwarded to a delegate once configured.
// Otherwise, all functionality is forwarded to a NoopTracer.
type tracer struct {
embedded.Tracer
name string
opts []trace.TracerOption
provider *tracerProvider
delegate atomic.Value
}
// Compile-time guarantee that tracer implements the trace.Tracer interface.
var _ trace.Tracer = &tracer{}
// setDelegate configures t to delegate all Tracer functionality to Tracers
// created by provider.
//
// All subsequent calls to the Tracer methods will be passed to the delegate.
//
// It is guaranteed by the caller that this happens only once.
func (t *tracer) setDelegate(provider trace.TracerProvider) {
t.delegate.Store(provider.Tracer(t.name, t.opts...))
}
// Start implements trace.Tracer by forwarding the call to t.delegate if
// set, otherwise it forwards the call to a NoopTracer.
func (t *tracer) Start(ctx context.Context, name string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
delegate := t.delegate.Load()
if delegate != nil {
return delegate.(trace.Tracer).Start(ctx, name, opts...)
}
return t.newSpan(ctx, autoInstEnabled, name, opts)
}
// autoInstEnabled determines if the auto-instrumentation SDK span is returned
// from the tracer when not backed by a delegate and auto-instrumentation has
// attached to this process.
//
// The auto-instrumentation is expected to overwrite this value to true when it
// attaches. By default, this will point to false and mean a tracer will return
// a nonRecordingSpan by default.
var autoInstEnabled = new(bool)
// newSpan is called by tracer.Start so auto-instrumentation can attach an eBPF
// uprobe to this code.
//
// "noinline" pragma prevents the method from ever being inlined.
//
//go:noinline
func (t *tracer) newSpan(
ctx context.Context,
autoSpan *bool,
name string,
opts []trace.SpanStartOption,
) (context.Context, trace.Span) {
// autoInstEnabled is passed to newSpan via the autoSpan parameter. This is
// so the auto-instrumentation can define a uprobe for (*t).newSpan and be
// provided with the address of the bool autoInstEnabled points to. It
// needs to be a parameter so that pointer can be reliably determined, it
// should not be read from the global.
if *autoSpan {
tracer := sdk.TracerProvider().Tracer(t.name, t.opts...)
return tracer.Start(ctx, name, opts...)
}
s := nonRecordingSpan{sc: trace.SpanContextFromContext(ctx), tracer: t}
ctx = trace.ContextWithSpan(ctx, s)
return ctx, s
}
// nonRecordingSpan is a minimal implementation of a Span that wraps a
// SpanContext. It performs no operations other than to return the wrapped
// SpanContext.
type nonRecordingSpan struct {
embedded.Span
sc trace.SpanContext
tracer *tracer
}
var _ trace.Span = nonRecordingSpan{}
// SpanContext returns the wrapped SpanContext.
func (s nonRecordingSpan) SpanContext() trace.SpanContext { return s.sc }
// IsRecording always returns false.
func (nonRecordingSpan) IsRecording() bool { return false }
// SetStatus does nothing.
func (nonRecordingSpan) SetStatus(codes.Code, string) {}
// SetError does nothing.
func (nonRecordingSpan) SetError(bool) {}
// SetAttributes does nothing.
func (nonRecordingSpan) SetAttributes(...attribute.KeyValue) {}
// End does nothing.
func (nonRecordingSpan) End(...trace.SpanEndOption) {}
// RecordError does nothing.
func (nonRecordingSpan) RecordError(error, ...trace.EventOption) {}
// AddEvent does nothing.
func (nonRecordingSpan) AddEvent(string, ...trace.EventOption) {}
// AddLink does nothing.
func (nonRecordingSpan) AddLink(trace.Link) {}
// SetName does nothing.
func (nonRecordingSpan) SetName(string) {}
func (s nonRecordingSpan) TracerProvider() trace.TracerProvider { return s.tracer.provider }

15
vendor/go.opentelemetry.io/otel/internal_logging.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"github.com/go-logr/logr"
"go.opentelemetry.io/otel/internal/global"
)
// SetLogger configures the logger used internally to opentelemetry.
func SetLogger(logger logr.Logger) {
global.SetLogger(logger)
}

42
vendor/go.opentelemetry.io/otel/metric.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/metric"
)
// Meter returns a Meter from the global MeterProvider. The name must be the
// name of the library providing instrumentation. This name may be the same as
// the instrumented code only if that code provides built-in instrumentation.
// If the name is empty, then an implementation defined default name will be
// used instead.
//
// If this is called before a global MeterProvider is registered the returned
// Meter will be a No-op implementation of a Meter. When a global MeterProvider
// is registered for the first time, the returned Meter, and all the
// instruments it has created or will create, are recreated automatically from
// the new MeterProvider.
//
// This is short for GetMeterProvider().Meter(name).
func Meter(name string, opts ...metric.MeterOption) metric.Meter {
return GetMeterProvider().Meter(name, opts...)
}
// GetMeterProvider returns the registered global meter provider.
//
// If no global GetMeterProvider has been registered, a No-op GetMeterProvider
// implementation is returned. When a global GetMeterProvider is registered for
// the first time, the returned GetMeterProvider, and all the Meters it has
// created or will create, are recreated automatically from the new
// GetMeterProvider.
func GetMeterProvider() metric.MeterProvider {
return global.MeterProvider()
}
// SetMeterProvider registers mp as the global MeterProvider.
func SetMeterProvider(mp metric.MeterProvider) {
global.SetMeterProvider(mp)
}

231
vendor/go.opentelemetry.io/otel/metric/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
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vendor/go.opentelemetry.io/otel/metric/README.md generated vendored Normal file
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# Metric API
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/metric)](https://pkg.go.dev/go.opentelemetry.io/otel/metric)

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vendor/go.opentelemetry.io/otel/metric/asyncfloat64.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/metric/embedded"
)
// Float64Observable describes a set of instruments used asynchronously to
// record float64 measurements once per collection cycle. Observations of
// these instruments are only made within a callback.
//
// Warning: Methods may be added to this interface in minor releases.
type Float64Observable interface {
Observable
float64Observable()
}
// Float64ObservableCounter is an instrument used to asynchronously record
// increasing float64 measurements once per collection cycle. Observations are
// only made within a callback for this instrument. The value observed is
// assumed the to be the cumulative sum of the count.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for
// unimplemented methods.
type Float64ObservableCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64ObservableCounter
Float64Observable
}
// Float64ObservableCounterConfig contains options for asynchronous counter
// instruments that record float64 values.
type Float64ObservableCounterConfig struct {
description string
unit string
callbacks []Float64Callback
}
// NewFloat64ObservableCounterConfig returns a new
// [Float64ObservableCounterConfig] with all opts applied.
func NewFloat64ObservableCounterConfig(opts ...Float64ObservableCounterOption) Float64ObservableCounterConfig {
var config Float64ObservableCounterConfig
for _, o := range opts {
config = o.applyFloat64ObservableCounter(config)
}
return config
}
// Description returns the configured description.
func (c Float64ObservableCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64ObservableCounterConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Float64ObservableCounterConfig) Callbacks() []Float64Callback {
return c.callbacks
}
// Float64ObservableCounterOption applies options to a
// [Float64ObservableCounterConfig]. See [Float64ObservableOption] and
// [InstrumentOption] for other options that can be used as a
// Float64ObservableCounterOption.
type Float64ObservableCounterOption interface {
applyFloat64ObservableCounter(Float64ObservableCounterConfig) Float64ObservableCounterConfig
}
// Float64ObservableUpDownCounter is an instrument used to asynchronously
// record float64 measurements once per collection cycle. Observations are only
// made within a callback for this instrument. The value observed is assumed
// the to be the cumulative sum of the count.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64ObservableUpDownCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64ObservableUpDownCounter
Float64Observable
}
// Float64ObservableUpDownCounterConfig contains options for asynchronous
// counter instruments that record float64 values.
type Float64ObservableUpDownCounterConfig struct {
description string
unit string
callbacks []Float64Callback
}
// NewFloat64ObservableUpDownCounterConfig returns a new
// [Float64ObservableUpDownCounterConfig] with all opts applied.
func NewFloat64ObservableUpDownCounterConfig(
opts ...Float64ObservableUpDownCounterOption,
) Float64ObservableUpDownCounterConfig {
var config Float64ObservableUpDownCounterConfig
for _, o := range opts {
config = o.applyFloat64ObservableUpDownCounter(config)
}
return config
}
// Description returns the configured description.
func (c Float64ObservableUpDownCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64ObservableUpDownCounterConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Float64ObservableUpDownCounterConfig) Callbacks() []Float64Callback {
return c.callbacks
}
// Float64ObservableUpDownCounterOption applies options to a
// [Float64ObservableUpDownCounterConfig]. See [Float64ObservableOption] and
// [InstrumentOption] for other options that can be used as a
// Float64ObservableUpDownCounterOption.
type Float64ObservableUpDownCounterOption interface {
applyFloat64ObservableUpDownCounter(Float64ObservableUpDownCounterConfig) Float64ObservableUpDownCounterConfig
}
// Float64ObservableGauge is an instrument used to asynchronously record
// instantaneous float64 measurements once per collection cycle. Observations
// are only made within a callback for this instrument.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64ObservableGauge interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64ObservableGauge
Float64Observable
}
// Float64ObservableGaugeConfig contains options for asynchronous counter
// instruments that record float64 values.
type Float64ObservableGaugeConfig struct {
description string
unit string
callbacks []Float64Callback
}
// NewFloat64ObservableGaugeConfig returns a new [Float64ObservableGaugeConfig]
// with all opts applied.
func NewFloat64ObservableGaugeConfig(opts ...Float64ObservableGaugeOption) Float64ObservableGaugeConfig {
var config Float64ObservableGaugeConfig
for _, o := range opts {
config = o.applyFloat64ObservableGauge(config)
}
return config
}
// Description returns the configured description.
func (c Float64ObservableGaugeConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64ObservableGaugeConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Float64ObservableGaugeConfig) Callbacks() []Float64Callback {
return c.callbacks
}
// Float64ObservableGaugeOption applies options to a
// [Float64ObservableGaugeConfig]. See [Float64ObservableOption] and
// [InstrumentOption] for other options that can be used as a
// Float64ObservableGaugeOption.
type Float64ObservableGaugeOption interface {
applyFloat64ObservableGauge(Float64ObservableGaugeConfig) Float64ObservableGaugeConfig
}
// Float64Observer is a recorder of float64 measurements.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64Observer interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64Observer
// Observe records the float64 value.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Observe(value float64, options ...ObserveOption)
}
// Float64Callback is a function registered with a Meter that makes
// observations for a Float64Observable instrument it is registered with.
// Calls to the Float64Observer record measurement values for the
// Float64Observable.
//
// The function needs to complete in a finite amount of time and the deadline
// of the passed context is expected to be honored.
//
// The function needs to make unique observations across all registered
// Float64Callbacks. Meaning, it should not report measurements with the same
// attributes as another Float64Callbacks also registered for the same
// instrument.
//
// The function needs to be concurrent safe.
type Float64Callback func(context.Context, Float64Observer) error
// Float64ObservableOption applies options to float64 Observer instruments.
type Float64ObservableOption interface {
Float64ObservableCounterOption
Float64ObservableUpDownCounterOption
Float64ObservableGaugeOption
}
type float64CallbackOpt struct {
cback Float64Callback
}
func (o float64CallbackOpt) applyFloat64ObservableCounter(
cfg Float64ObservableCounterConfig,
) Float64ObservableCounterConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
func (o float64CallbackOpt) applyFloat64ObservableUpDownCounter(
cfg Float64ObservableUpDownCounterConfig,
) Float64ObservableUpDownCounterConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
func (o float64CallbackOpt) applyFloat64ObservableGauge(cfg Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
// WithFloat64Callback adds callback to be called for an instrument.
func WithFloat64Callback(callback Float64Callback) Float64ObservableOption {
return float64CallbackOpt{callback}
}

262
vendor/go.opentelemetry.io/otel/metric/asyncint64.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/metric/embedded"
)
// Int64Observable describes a set of instruments used asynchronously to record
// int64 measurements once per collection cycle. Observations of these
// instruments are only made within a callback.
//
// Warning: Methods may be added to this interface in minor releases.
type Int64Observable interface {
Observable
int64Observable()
}
// Int64ObservableCounter is an instrument used to asynchronously record
// increasing int64 measurements once per collection cycle. Observations are
// only made within a callback for this instrument. The value observed is
// assumed the to be the cumulative sum of the count.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64ObservableCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64ObservableCounter
Int64Observable
}
// Int64ObservableCounterConfig contains options for asynchronous counter
// instruments that record int64 values.
type Int64ObservableCounterConfig struct {
description string
unit string
callbacks []Int64Callback
}
// NewInt64ObservableCounterConfig returns a new [Int64ObservableCounterConfig]
// with all opts applied.
func NewInt64ObservableCounterConfig(opts ...Int64ObservableCounterOption) Int64ObservableCounterConfig {
var config Int64ObservableCounterConfig
for _, o := range opts {
config = o.applyInt64ObservableCounter(config)
}
return config
}
// Description returns the configured description.
func (c Int64ObservableCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64ObservableCounterConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Int64ObservableCounterConfig) Callbacks() []Int64Callback {
return c.callbacks
}
// Int64ObservableCounterOption applies options to a
// [Int64ObservableCounterConfig]. See [Int64ObservableOption] and
// [InstrumentOption] for other options that can be used as an
// Int64ObservableCounterOption.
type Int64ObservableCounterOption interface {
applyInt64ObservableCounter(Int64ObservableCounterConfig) Int64ObservableCounterConfig
}
// Int64ObservableUpDownCounter is an instrument used to asynchronously record
// int64 measurements once per collection cycle. Observations are only made
// within a callback for this instrument. The value observed is assumed the to
// be the cumulative sum of the count.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64ObservableUpDownCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64ObservableUpDownCounter
Int64Observable
}
// Int64ObservableUpDownCounterConfig contains options for asynchronous counter
// instruments that record int64 values.
type Int64ObservableUpDownCounterConfig struct {
description string
unit string
callbacks []Int64Callback
}
// NewInt64ObservableUpDownCounterConfig returns a new
// [Int64ObservableUpDownCounterConfig] with all opts applied.
func NewInt64ObservableUpDownCounterConfig(
opts ...Int64ObservableUpDownCounterOption,
) Int64ObservableUpDownCounterConfig {
var config Int64ObservableUpDownCounterConfig
for _, o := range opts {
config = o.applyInt64ObservableUpDownCounter(config)
}
return config
}
// Description returns the configured description.
func (c Int64ObservableUpDownCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64ObservableUpDownCounterConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Int64ObservableUpDownCounterConfig) Callbacks() []Int64Callback {
return c.callbacks
}
// Int64ObservableUpDownCounterOption applies options to a
// [Int64ObservableUpDownCounterConfig]. See [Int64ObservableOption] and
// [InstrumentOption] for other options that can be used as an
// Int64ObservableUpDownCounterOption.
type Int64ObservableUpDownCounterOption interface {
applyInt64ObservableUpDownCounter(Int64ObservableUpDownCounterConfig) Int64ObservableUpDownCounterConfig
}
// Int64ObservableGauge is an instrument used to asynchronously record
// instantaneous int64 measurements once per collection cycle. Observations are
// only made within a callback for this instrument.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64ObservableGauge interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64ObservableGauge
Int64Observable
}
// Int64ObservableGaugeConfig contains options for asynchronous counter
// instruments that record int64 values.
type Int64ObservableGaugeConfig struct {
description string
unit string
callbacks []Int64Callback
}
// NewInt64ObservableGaugeConfig returns a new [Int64ObservableGaugeConfig]
// with all opts applied.
func NewInt64ObservableGaugeConfig(opts ...Int64ObservableGaugeOption) Int64ObservableGaugeConfig {
var config Int64ObservableGaugeConfig
for _, o := range opts {
config = o.applyInt64ObservableGauge(config)
}
return config
}
// Description returns the configured description.
func (c Int64ObservableGaugeConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64ObservableGaugeConfig) Unit() string {
return c.unit
}
// Callbacks returns the configured callbacks.
func (c Int64ObservableGaugeConfig) Callbacks() []Int64Callback {
return c.callbacks
}
// Int64ObservableGaugeOption applies options to a
// [Int64ObservableGaugeConfig]. See [Int64ObservableOption] and
// [InstrumentOption] for other options that can be used as an
// Int64ObservableGaugeOption.
type Int64ObservableGaugeOption interface {
applyInt64ObservableGauge(Int64ObservableGaugeConfig) Int64ObservableGaugeConfig
}
// Int64Observer is a recorder of int64 measurements.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64Observer interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64Observer
// Observe records the int64 value.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Observe(value int64, options ...ObserveOption)
}
// Int64Callback is a function registered with a Meter that makes observations
// for an Int64Observable instrument it is registered with. Calls to the
// Int64Observer record measurement values for the Int64Observable.
//
// The function needs to complete in a finite amount of time and the deadline
// of the passed context is expected to be honored.
//
// The function needs to make unique observations across all registered
// Int64Callbacks. Meaning, it should not report measurements with the same
// attributes as another Int64Callbacks also registered for the same
// instrument.
//
// The function needs to be concurrent safe.
type Int64Callback func(context.Context, Int64Observer) error
// Int64ObservableOption applies options to int64 Observer instruments.
type Int64ObservableOption interface {
Int64ObservableCounterOption
Int64ObservableUpDownCounterOption
Int64ObservableGaugeOption
}
type int64CallbackOpt struct {
cback Int64Callback
}
func (o int64CallbackOpt) applyInt64ObservableCounter(cfg Int64ObservableCounterConfig) Int64ObservableCounterConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
func (o int64CallbackOpt) applyInt64ObservableUpDownCounter(
cfg Int64ObservableUpDownCounterConfig,
) Int64ObservableUpDownCounterConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
func (o int64CallbackOpt) applyInt64ObservableGauge(cfg Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
cfg.callbacks = append(cfg.callbacks, o.cback)
return cfg
}
// WithInt64Callback adds callback to be called for an instrument.
func WithInt64Callback(callback Int64Callback) Int64ObservableOption {
return int64CallbackOpt{callback}
}

111
vendor/go.opentelemetry.io/otel/metric/config.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"slices"
"go.opentelemetry.io/otel/attribute"
)
// MeterConfig contains options for Meters.
type MeterConfig struct {
instrumentationVersion string
schemaURL string
attrs attribute.Set
// Ensure forward compatibility by explicitly making this not comparable.
noCmp [0]func() //nolint: unused // This is indeed used.
}
// InstrumentationVersion returns the version of the library providing
// instrumentation.
func (cfg MeterConfig) InstrumentationVersion() string {
return cfg.instrumentationVersion
}
// InstrumentationAttributes returns the attributes associated with the library
// providing instrumentation.
func (cfg MeterConfig) InstrumentationAttributes() attribute.Set {
return cfg.attrs
}
// SchemaURL is the schema_url of the library providing instrumentation.
func (cfg MeterConfig) SchemaURL() string {
return cfg.schemaURL
}
// MeterOption is an interface for applying Meter options.
type MeterOption interface {
// applyMeter is used to set a MeterOption value of a MeterConfig.
applyMeter(MeterConfig) MeterConfig
}
// NewMeterConfig creates a new MeterConfig and applies
// all the given options.
func NewMeterConfig(opts ...MeterOption) MeterConfig {
var config MeterConfig
for _, o := range opts {
config = o.applyMeter(config)
}
return config
}
type meterOptionFunc func(MeterConfig) MeterConfig
func (fn meterOptionFunc) applyMeter(cfg MeterConfig) MeterConfig {
return fn(cfg)
}
// WithInstrumentationVersion sets the instrumentation version.
func WithInstrumentationVersion(version string) MeterOption {
return meterOptionFunc(func(config MeterConfig) MeterConfig {
config.instrumentationVersion = version
return config
})
}
// WithInstrumentationAttributes adds the instrumentation attributes.
//
// This is equivalent to calling [WithInstrumentationAttributeSet] with an
// [attribute.Set] created from a clone of the passed attributes.
// [WithInstrumentationAttributeSet] is recommended for more control.
//
// If multiple [WithInstrumentationAttributes] or [WithInstrumentationAttributeSet]
// options are passed, the attributes will be merged together in the order
// they are passed. Attributes with duplicate keys will use the last value passed.
func WithInstrumentationAttributes(attr ...attribute.KeyValue) MeterOption {
set := attribute.NewSet(slices.Clone(attr)...)
return WithInstrumentationAttributeSet(set)
}
// WithInstrumentationAttributeSet adds the instrumentation attributes.
//
// If multiple [WithInstrumentationAttributes] or [WithInstrumentationAttributeSet]
// options are passed, the attributes will be merged together in the order
// they are passed. Attributes with duplicate keys will use the last value passed.
func WithInstrumentationAttributeSet(set attribute.Set) MeterOption {
if set.Len() == 0 {
return meterOptionFunc(func(config MeterConfig) MeterConfig {
return config
})
}
return meterOptionFunc(func(config MeterConfig) MeterConfig {
if config.attrs.Len() == 0 {
config.attrs = set
} else {
config.attrs = mergeSets(config.attrs, set)
}
return config
})
}
// WithSchemaURL sets the schema URL.
func WithSchemaURL(schemaURL string) MeterOption {
return meterOptionFunc(func(config MeterConfig) MeterConfig {
config.schemaURL = schemaURL
return config
})
}

177
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package metric provides the OpenTelemetry API used to measure metrics about
source code operation.
This API is separate from its implementation so the instrumentation built from
it is reusable. See [go.opentelemetry.io/otel/sdk/metric] for the official
OpenTelemetry implementation of this API.
All measurements made with this package are made via instruments. These
instruments are created by a [Meter] which itself is created by a
[MeterProvider]. Applications need to accept a [MeterProvider] implementation
as a starting point when instrumenting. This can be done directly, or by using
the OpenTelemetry global MeterProvider via [GetMeterProvider]. Using an
appropriately named [Meter] from the accepted [MeterProvider], instrumentation
can then be built from the [Meter]'s instruments.
# Instruments
Each instrument is designed to make measurements of a particular type. Broadly,
all instruments fall into two overlapping logical categories: asynchronous or
synchronous, and int64 or float64.
All synchronous instruments ([Int64Counter], [Int64UpDownCounter],
[Int64Histogram], [Float64Counter], [Float64UpDownCounter], and
[Float64Histogram]) are used to measure the operation and performance of source
code during the source code execution. These instruments only make measurements
when the source code they instrument is run.
All asynchronous instruments ([Int64ObservableCounter],
[Int64ObservableUpDownCounter], [Int64ObservableGauge],
[Float64ObservableCounter], [Float64ObservableUpDownCounter], and
[Float64ObservableGauge]) are used to measure metrics outside of the execution
of source code. They are said to make "observations" via a callback function
called once every measurement collection cycle.
Each instrument is also grouped by the value type it measures. Either int64 or
float64. The value being measured will dictate which instrument in these
categories to use.
Outside of these two broad categories, instruments are described by the
function they are designed to serve. All Counters ([Int64Counter],
[Float64Counter], [Int64ObservableCounter], and [Float64ObservableCounter]) are
designed to measure values that never decrease in value, but instead only
incrementally increase in value. UpDownCounters ([Int64UpDownCounter],
[Float64UpDownCounter], [Int64ObservableUpDownCounter], and
[Float64ObservableUpDownCounter]) on the other hand, are designed to measure
values that can increase and decrease. When more information needs to be
conveyed about all the synchronous measurements made during a collection cycle,
a Histogram ([Int64Histogram] and [Float64Histogram]) should be used. Finally,
when just the most recent measurement needs to be conveyed about an
asynchronous measurement, a Gauge ([Int64ObservableGauge] and
[Float64ObservableGauge]) should be used.
See the [OpenTelemetry documentation] for more information about instruments
and their intended use.
# Instrument Name
OpenTelemetry defines an [instrument name syntax] that restricts what
instrument names are allowed.
Instrument names should ...
- Not be empty.
- Have an alphabetic character as their first letter.
- Have any letter after the first be an alphanumeric character, ‘_’, ‘.’,
‘-’, or ‘/’.
- Have a maximum length of 255 letters.
To ensure compatibility with observability platforms, all instruments created
need to conform to this syntax. Not all implementations of the API will validate
these names, it is the callers responsibility to ensure compliance.
# Measurements
Measurements are made by recording values and information about the values with
an instrument. How these measurements are recorded depends on the instrument.
Measurements for synchronous instruments ([Int64Counter], [Int64UpDownCounter],
[Int64Histogram], [Float64Counter], [Float64UpDownCounter], and
[Float64Histogram]) are recorded using the instrument methods directly. All
counter instruments have an Add method that is used to measure an increment
value, and all histogram instruments have a Record method to measure a data
point.
Asynchronous instruments ([Int64ObservableCounter],
[Int64ObservableUpDownCounter], [Int64ObservableGauge],
[Float64ObservableCounter], [Float64ObservableUpDownCounter], and
[Float64ObservableGauge]) record measurements within a callback function. The
callback is registered with the Meter which ensures the callback is called once
per collection cycle. A callback can be registered two ways: during the
instrument's creation using an option, or later using the RegisterCallback
method of the [Meter] that created the instrument.
If the following criteria are met, an option ([WithInt64Callback] or
[WithFloat64Callback]) can be used during the asynchronous instrument's
creation to register a callback ([Int64Callback] or [Float64Callback],
respectively):
- The measurement process is known when the instrument is created
- Only that instrument will make a measurement within the callback
- The callback never needs to be unregistered
If the criteria are not met, use the RegisterCallback method of the [Meter] that
created the instrument to register a [Callback].
# API Implementations
This package does not conform to the standard Go versioning policy, all of its
interfaces may have methods added to them without a package major version bump.
This non-standard API evolution could surprise an uninformed implementation
author. They could unknowingly build their implementation in a way that would
result in a runtime panic for their users that update to the new API.
The API is designed to help inform an instrumentation author about this
non-standard API evolution. It requires them to choose a default behavior for
unimplemented interface methods. There are three behavior choices they can
make:
- Compilation failure
- Panic
- Default to another implementation
All interfaces in this API embed a corresponding interface from
[go.opentelemetry.io/otel/metric/embedded]. If an author wants the default
behavior of their implementations to be a compilation failure, signaling to
their users they need to update to the latest version of that implementation,
they need to embed the corresponding interface from
[go.opentelemetry.io/otel/metric/embedded] in their implementation. For
example,
import "go.opentelemetry.io/otel/metric/embedded"
type MeterProvider struct {
embedded.MeterProvider
// ...
}
If an author wants the default behavior of their implementations to a panic,
they need to embed the API interface directly.
import "go.opentelemetry.io/otel/metric"
type MeterProvider struct {
metric.MeterProvider
// ...
}
This is not a recommended behavior as it could lead to publishing packages that
contain runtime panics when users update other package that use newer versions
of [go.opentelemetry.io/otel/metric].
Finally, an author can embed another implementation in theirs. The embedded
implementation will be used for methods not defined by the author. For example,
an author who wants to default to silently dropping the call can use
[go.opentelemetry.io/otel/metric/noop]:
import "go.opentelemetry.io/otel/metric/noop"
type MeterProvider struct {
noop.MeterProvider
// ...
}
It is strongly recommended that authors only embed
[go.opentelemetry.io/otel/metric/noop] if they choose this default behavior.
That implementation is the only one OpenTelemetry authors can guarantee will
fully implement all the API interfaces when a user updates their API.
[instrument name syntax]: https://opentelemetry.io/docs/specs/otel/metrics/api/#instrument-name-syntax
[OpenTelemetry documentation]: https://opentelemetry.io/docs/concepts/signals/metrics/
[GetMeterProvider]: https://pkg.go.dev/go.opentelemetry.io/otel#GetMeterProvider
*/
package metric // import "go.opentelemetry.io/otel/metric"

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# Metric Embedded
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/metric/embedded)](https://pkg.go.dev/go.opentelemetry.io/otel/metric/embedded)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package embedded provides interfaces embedded within the [OpenTelemetry
// metric API].
//
// Implementers of the [OpenTelemetry metric API] can embed the relevant type
// from this package into their implementation directly. Doing so will result
// in a compilation error for users when the [OpenTelemetry metric API] is
// extended (which is something that can happen without a major version bump of
// the API package).
//
// [OpenTelemetry metric API]: https://pkg.go.dev/go.opentelemetry.io/otel/metric
package embedded // import "go.opentelemetry.io/otel/metric/embedded"
// MeterProvider is embedded in
// [go.opentelemetry.io/otel/metric.MeterProvider].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.MeterProvider] if you want users to
// experience a compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.MeterProvider]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type MeterProvider interface{ meterProvider() }
// Meter is embedded in [go.opentelemetry.io/otel/metric.Meter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Meter] if you want users to experience a
// compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.Meter] interface
// is extended (which is something that can happen without a major version bump
// of the API package).
type Meter interface{ meter() }
// Float64Observer is embedded in
// [go.opentelemetry.io/otel/metric.Float64Observer].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64Observer] if you want
// users to experience a compilation error, signaling they need to update to
// your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64Observer] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Float64Observer interface{ float64Observer() }
// Int64Observer is embedded in
// [go.opentelemetry.io/otel/metric.Int64Observer].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64Observer] if you want users
// to experience a compilation error, signaling they need to update to your
// latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64Observer] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Int64Observer interface{ int64Observer() }
// Observer is embedded in [go.opentelemetry.io/otel/metric.Observer].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Observer] if you want users to experience a
// compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.Observer]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Observer interface{ observer() }
// Registration is embedded in [go.opentelemetry.io/otel/metric.Registration].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Registration] if you want users to
// experience a compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.Registration]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Registration interface{ registration() }
// Float64Counter is embedded in
// [go.opentelemetry.io/otel/metric.Float64Counter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64Counter] if you want
// users to experience a compilation error, signaling they need to update to
// your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64Counter] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Float64Counter interface{ float64Counter() }
// Float64Histogram is embedded in
// [go.opentelemetry.io/otel/metric.Float64Histogram].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64Histogram] if you want
// users to experience a compilation error, signaling they need to update to
// your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64Histogram] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Float64Histogram interface{ float64Histogram() }
// Float64Gauge is embedded in [go.opentelemetry.io/otel/metric.Float64Gauge].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64Gauge] if you want users to
// experience a compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.Float64Gauge]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Float64Gauge interface{ float64Gauge() }
// Float64ObservableCounter is embedded in
// [go.opentelemetry.io/otel/metric.Float64ObservableCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64ObservableCounter] if you
// want users to experience a compilation error, signaling they need to update
// to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64ObservableCounter]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Float64ObservableCounter interface{ float64ObservableCounter() }
// Float64ObservableGauge is embedded in
// [go.opentelemetry.io/otel/metric.Float64ObservableGauge].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64ObservableGauge] if you
// want users to experience a compilation error, signaling they need to update
// to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64ObservableGauge]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Float64ObservableGauge interface{ float64ObservableGauge() }
// Float64ObservableUpDownCounter is embedded in
// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter]
// if you want users to experience a compilation error, signaling they need to
// update to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64ObservableUpDownCounter]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Float64ObservableUpDownCounter interface{ float64ObservableUpDownCounter() }
// Float64UpDownCounter is embedded in
// [go.opentelemetry.io/otel/metric.Float64UpDownCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Float64UpDownCounter] if you
// want users to experience a compilation error, signaling they need to update
// to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Float64UpDownCounter] interface
// is extended (which is something that can happen without a major version bump
// of the API package).
type Float64UpDownCounter interface{ float64UpDownCounter() }
// Int64Counter is embedded in
// [go.opentelemetry.io/otel/metric.Int64Counter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64Counter] if you want users
// to experience a compilation error, signaling they need to update to your
// latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64Counter] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Int64Counter interface{ int64Counter() }
// Int64Histogram is embedded in
// [go.opentelemetry.io/otel/metric.Int64Histogram].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64Histogram] if you want
// users to experience a compilation error, signaling they need to update to
// your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64Histogram] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Int64Histogram interface{ int64Histogram() }
// Int64Gauge is embedded in [go.opentelemetry.io/otel/metric.Int64Gauge].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64Gauge] if you want users to experience
// a compilation error, signaling they need to update to your latest
// implementation, when the [go.opentelemetry.io/otel/metric.Int64Gauge]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Int64Gauge interface{ int64Gauge() }
// Int64ObservableCounter is embedded in
// [go.opentelemetry.io/otel/metric.Int64ObservableCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64ObservableCounter] if you
// want users to experience a compilation error, signaling they need to update
// to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64ObservableCounter]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Int64ObservableCounter interface{ int64ObservableCounter() }
// Int64ObservableGauge is embedded in
// [go.opentelemetry.io/otel/metric.Int64ObservableGauge].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64ObservableGauge] if you
// want users to experience a compilation error, signaling they need to update
// to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64ObservableGauge] interface
// is extended (which is something that can happen without a major version bump
// of the API package).
type Int64ObservableGauge interface{ int64ObservableGauge() }
// Int64ObservableUpDownCounter is embedded in
// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter] if
// you want users to experience a compilation error, signaling they need to
// update to your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64ObservableUpDownCounter]
// interface is extended (which is something that can happen without a major
// version bump of the API package).
type Int64ObservableUpDownCounter interface{ int64ObservableUpDownCounter() }
// Int64UpDownCounter is embedded in
// [go.opentelemetry.io/otel/metric.Int64UpDownCounter].
//
// Embed this interface in your implementation of the
// [go.opentelemetry.io/otel/metric.Int64UpDownCounter] if you want
// users to experience a compilation error, signaling they need to update to
// your latest implementation, when the
// [go.opentelemetry.io/otel/metric.Int64UpDownCounter] interface is
// extended (which is something that can happen without a major version bump of
// the API package).
type Int64UpDownCounter interface{ int64UpDownCounter() }

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import "go.opentelemetry.io/otel/attribute"
// Observable is used as a grouping mechanism for all instruments that are
// updated within a Callback.
type Observable interface {
observable()
}
// InstrumentOption applies options to all instruments.
type InstrumentOption interface {
Int64CounterOption
Int64UpDownCounterOption
Int64HistogramOption
Int64GaugeOption
Int64ObservableCounterOption
Int64ObservableUpDownCounterOption
Int64ObservableGaugeOption
Float64CounterOption
Float64UpDownCounterOption
Float64HistogramOption
Float64GaugeOption
Float64ObservableCounterOption
Float64ObservableUpDownCounterOption
Float64ObservableGaugeOption
}
// HistogramOption applies options to histogram instruments.
type HistogramOption interface {
Int64HistogramOption
Float64HistogramOption
}
type descOpt string
func (o descOpt) applyFloat64Counter(c Float64CounterConfig) Float64CounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64UpDownCounter(c Float64UpDownCounterConfig) Float64UpDownCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64HistogramConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64Gauge(c Float64GaugeConfig) Float64GaugeConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64ObservableUpDownCounter(
c Float64ObservableUpDownCounterConfig,
) Float64ObservableUpDownCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64ObservableGauge(c Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64Counter(c Int64CounterConfig) Int64CounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64UpDownCounter(c Int64UpDownCounterConfig) Int64UpDownCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64Gauge(c Int64GaugeConfig) Int64GaugeConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64ObservableUpDownCounter(
c Int64ObservableUpDownCounterConfig,
) Int64ObservableUpDownCounterConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64ObservableGauge(c Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
c.description = string(o)
return c
}
// WithDescription sets the instrument description.
func WithDescription(desc string) InstrumentOption { return descOpt(desc) }
type unitOpt string
func (o unitOpt) applyFloat64Counter(c Float64CounterConfig) Float64CounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64UpDownCounter(c Float64UpDownCounterConfig) Float64UpDownCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64HistogramConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64Gauge(c Float64GaugeConfig) Float64GaugeConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64ObservableCounter(c Float64ObservableCounterConfig) Float64ObservableCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64ObservableUpDownCounter(
c Float64ObservableUpDownCounterConfig,
) Float64ObservableUpDownCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyFloat64ObservableGauge(c Float64ObservableGaugeConfig) Float64ObservableGaugeConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64Counter(c Int64CounterConfig) Int64CounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64UpDownCounter(c Int64UpDownCounterConfig) Int64UpDownCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64Gauge(c Int64GaugeConfig) Int64GaugeConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64ObservableCounter(c Int64ObservableCounterConfig) Int64ObservableCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64ObservableUpDownCounter(
c Int64ObservableUpDownCounterConfig,
) Int64ObservableUpDownCounterConfig {
c.unit = string(o)
return c
}
func (o unitOpt) applyInt64ObservableGauge(c Int64ObservableGaugeConfig) Int64ObservableGaugeConfig {
c.unit = string(o)
return c
}
// WithUnit sets the instrument unit.
//
// The unit u should be defined using the appropriate [UCUM](https://ucum.org) case-sensitive code.
func WithUnit(u string) InstrumentOption { return unitOpt(u) }
// WithExplicitBucketBoundaries sets the instrument explicit bucket boundaries.
//
// This option is considered "advisory", and may be ignored by API implementations.
func WithExplicitBucketBoundaries(bounds ...float64) HistogramOption { return bucketOpt(bounds) }
type bucketOpt []float64
func (o bucketOpt) applyFloat64Histogram(c Float64HistogramConfig) Float64HistogramConfig {
c.explicitBucketBoundaries = o
return c
}
func (o bucketOpt) applyInt64Histogram(c Int64HistogramConfig) Int64HistogramConfig {
c.explicitBucketBoundaries = o
return c
}
// AddOption applies options to an addition measurement. See
// [MeasurementOption] for other options that can be used as an AddOption.
type AddOption interface {
applyAdd(AddConfig) AddConfig
}
// AddConfig contains options for an addition measurement.
type AddConfig struct {
attrs attribute.Set
}
// NewAddConfig returns a new [AddConfig] with all opts applied.
func NewAddConfig(opts []AddOption) AddConfig {
config := AddConfig{attrs: *attribute.EmptySet()}
for _, o := range opts {
config = o.applyAdd(config)
}
return config
}
// Attributes returns the configured attribute set.
func (c AddConfig) Attributes() attribute.Set {
return c.attrs
}
// RecordOption applies options to an addition measurement. See
// [MeasurementOption] for other options that can be used as a RecordOption.
type RecordOption interface {
applyRecord(RecordConfig) RecordConfig
}
// RecordConfig contains options for a recorded measurement.
type RecordConfig struct {
attrs attribute.Set
}
// NewRecordConfig returns a new [RecordConfig] with all opts applied.
func NewRecordConfig(opts []RecordOption) RecordConfig {
config := RecordConfig{attrs: *attribute.EmptySet()}
for _, o := range opts {
config = o.applyRecord(config)
}
return config
}
// Attributes returns the configured attribute set.
func (c RecordConfig) Attributes() attribute.Set {
return c.attrs
}
// ObserveOption applies options to an addition measurement. See
// [MeasurementOption] for other options that can be used as a ObserveOption.
type ObserveOption interface {
applyObserve(ObserveConfig) ObserveConfig
}
// ObserveConfig contains options for an observed measurement.
type ObserveConfig struct {
attrs attribute.Set
}
// NewObserveConfig returns a new [ObserveConfig] with all opts applied.
func NewObserveConfig(opts []ObserveOption) ObserveConfig {
config := ObserveConfig{attrs: *attribute.EmptySet()}
for _, o := range opts {
config = o.applyObserve(config)
}
return config
}
// Attributes returns the configured attribute set.
func (c ObserveConfig) Attributes() attribute.Set {
return c.attrs
}
// MeasurementOption applies options to all instrument measurement.
type MeasurementOption interface {
AddOption
RecordOption
ObserveOption
}
type attrOpt struct {
set attribute.Set
}
// mergeSets returns the union of keys between a and b. Any duplicate keys will
// use the value associated with b.
func mergeSets(a, b attribute.Set) attribute.Set {
// NewMergeIterator uses the first value for any duplicates.
iter := attribute.NewMergeIterator(&b, &a)
merged := make([]attribute.KeyValue, 0, a.Len()+b.Len())
for iter.Next() {
merged = append(merged, iter.Attribute())
}
return attribute.NewSet(merged...)
}
func (o attrOpt) applyAdd(c AddConfig) AddConfig {
switch {
case o.set.Len() == 0:
case c.attrs.Len() == 0:
c.attrs = o.set
default:
c.attrs = mergeSets(c.attrs, o.set)
}
return c
}
func (o attrOpt) applyRecord(c RecordConfig) RecordConfig {
switch {
case o.set.Len() == 0:
case c.attrs.Len() == 0:
c.attrs = o.set
default:
c.attrs = mergeSets(c.attrs, o.set)
}
return c
}
func (o attrOpt) applyObserve(c ObserveConfig) ObserveConfig {
switch {
case o.set.Len() == 0:
case c.attrs.Len() == 0:
c.attrs = o.set
default:
c.attrs = mergeSets(c.attrs, o.set)
}
return c
}
// WithAttributeSet sets the attribute Set associated with a measurement is
// made with.
//
// If multiple WithAttributeSet or WithAttributes options are passed the
// attributes will be merged together in the order they are passed. Attributes
// with duplicate keys will use the last value passed.
func WithAttributeSet(attributes attribute.Set) MeasurementOption {
return attrOpt{set: attributes}
}
// WithAttributes converts attributes into an attribute Set and sets the Set to
// be associated with a measurement. This is shorthand for:
//
// cp := make([]attribute.KeyValue, len(attributes))
// copy(cp, attributes)
// WithAttributeSet(attribute.NewSet(cp...))
//
// [attribute.NewSet] may modify the passed attributes so this will make a copy
// of attributes before creating a set in order to ensure this function is
// concurrent safe. This makes this option function less optimized in
// comparison to [WithAttributeSet]. Therefore, [WithAttributeSet] should be
// preferred for performance sensitive code.
//
// See [WithAttributeSet] for information about how multiple WithAttributes are
// merged.
func WithAttributes(attributes ...attribute.KeyValue) MeasurementOption {
cp := make([]attribute.KeyValue, len(attributes))
copy(cp, attributes)
return attrOpt{set: attribute.NewSet(cp...)}
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/metric/embedded"
)
// MeterProvider provides access to named Meter instances, for instrumenting
// an application or package.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type MeterProvider interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.MeterProvider
// Meter returns a new Meter with the provided name and configuration.
//
// A Meter should be scoped at most to a single package. The name needs to
// be unique so it does not collide with other names used by
// an application, nor other applications. To achieve this, the import path
// of the instrumentation package is recommended to be used as name.
//
// If the name is empty, then an implementation defined default name will
// be used instead.
Meter(name string, opts ...MeterOption) Meter
}
// Meter provides access to instrument instances for recording metrics.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Meter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Meter
// Int64Counter returns a new Int64Counter instrument identified by name
// and configured with options. The instrument is used to synchronously
// record increasing int64 measurements during a computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64Counter(name string, options ...Int64CounterOption) (Int64Counter, error)
// Int64UpDownCounter returns a new Int64UpDownCounter instrument
// identified by name and configured with options. The instrument is used
// to synchronously record int64 measurements during a computational
// operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64UpDownCounter(name string, options ...Int64UpDownCounterOption) (Int64UpDownCounter, error)
// Int64Histogram returns a new Int64Histogram instrument identified by
// name and configured with options. The instrument is used to
// synchronously record the distribution of int64 measurements during a
// computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64Histogram(name string, options ...Int64HistogramOption) (Int64Histogram, error)
// Int64Gauge returns a new Int64Gauge instrument identified by name and
// configured with options. The instrument is used to synchronously record
// instantaneous int64 measurements during a computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64Gauge(name string, options ...Int64GaugeOption) (Int64Gauge, error)
// Int64ObservableCounter returns a new Int64ObservableCounter identified
// by name and configured with options. The instrument is used to
// asynchronously record increasing int64 measurements once per a
// measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithInt64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64ObservableCounter(name string, options ...Int64ObservableCounterOption) (Int64ObservableCounter, error)
// Int64ObservableUpDownCounter returns a new Int64ObservableUpDownCounter
// instrument identified by name and configured with options. The
// instrument is used to asynchronously record int64 measurements once per
// a measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithInt64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64ObservableUpDownCounter(
name string,
options ...Int64ObservableUpDownCounterOption,
) (Int64ObservableUpDownCounter, error)
// Int64ObservableGauge returns a new Int64ObservableGauge instrument
// identified by name and configured with options. The instrument is used
// to asynchronously record instantaneous int64 measurements once per a
// measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithInt64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Int64ObservableGauge(name string, options ...Int64ObservableGaugeOption) (Int64ObservableGauge, error)
// Float64Counter returns a new Float64Counter instrument identified by
// name and configured with options. The instrument is used to
// synchronously record increasing float64 measurements during a
// computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64Counter(name string, options ...Float64CounterOption) (Float64Counter, error)
// Float64UpDownCounter returns a new Float64UpDownCounter instrument
// identified by name and configured with options. The instrument is used
// to synchronously record float64 measurements during a computational
// operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64UpDownCounter(name string, options ...Float64UpDownCounterOption) (Float64UpDownCounter, error)
// Float64Histogram returns a new Float64Histogram instrument identified by
// name and configured with options. The instrument is used to
// synchronously record the distribution of float64 measurements during a
// computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64Histogram(name string, options ...Float64HistogramOption) (Float64Histogram, error)
// Float64Gauge returns a new Float64Gauge instrument identified by name and
// configured with options. The instrument is used to synchronously record
// instantaneous float64 measurements during a computational operation.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64Gauge(name string, options ...Float64GaugeOption) (Float64Gauge, error)
// Float64ObservableCounter returns a new Float64ObservableCounter
// instrument identified by name and configured with options. The
// instrument is used to asynchronously record increasing float64
// measurements once per a measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithFloat64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64ObservableCounter(name string, options ...Float64ObservableCounterOption) (Float64ObservableCounter, error)
// Float64ObservableUpDownCounter returns a new
// Float64ObservableUpDownCounter instrument identified by name and
// configured with options. The instrument is used to asynchronously record
// float64 measurements once per a measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithFloat64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64ObservableUpDownCounter(
name string,
options ...Float64ObservableUpDownCounterOption,
) (Float64ObservableUpDownCounter, error)
// Float64ObservableGauge returns a new Float64ObservableGauge instrument
// identified by name and configured with options. The instrument is used
// to asynchronously record instantaneous float64 measurements once per a
// measurement collection cycle.
//
// Measurements for the returned instrument are made via a callback. Use
// the WithFloat64Callback option to register the callback here, or use the
// RegisterCallback method of this Meter to register one later. See the
// Measurements section of the package documentation for more information.
//
// The name needs to conform to the OpenTelemetry instrument name syntax.
// See the Instrument Name section of the package documentation for more
// information.
Float64ObservableGauge(name string, options ...Float64ObservableGaugeOption) (Float64ObservableGauge, error)
// RegisterCallback registers f to be called during the collection of a
// measurement cycle.
//
// If Unregister of the returned Registration is called, f needs to be
// unregistered and not called during collection.
//
// The instruments f is registered with are the only instruments that f may
// observe values for.
//
// If no instruments are passed, f should not be registered nor called
// during collection.
//
// The function f needs to be concurrent safe.
RegisterCallback(f Callback, instruments ...Observable) (Registration, error)
}
// Callback is a function registered with a Meter that makes observations for
// the set of instruments it is registered with. The Observer parameter is used
// to record measurement observations for these instruments.
//
// The function needs to complete in a finite amount of time and the deadline
// of the passed context is expected to be honored.
//
// The function needs to make unique observations across all registered
// Callbacks. Meaning, it should not report measurements for an instrument with
// the same attributes as another Callback will report.
//
// The function needs to be concurrent safe.
type Callback func(context.Context, Observer) error
// Observer records measurements for multiple instruments in a Callback.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Observer interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Observer
// ObserveFloat64 records the float64 value for obsrv.
ObserveFloat64(obsrv Float64Observable, value float64, opts ...ObserveOption)
// ObserveInt64 records the int64 value for obsrv.
ObserveInt64(obsrv Int64Observable, value int64, opts ...ObserveOption)
}
// Registration is an token representing the unique registration of a callback
// for a set of instruments with a Meter.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Registration interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Registration
// Unregister removes the callback registration from a Meter.
//
// This method needs to be idempotent and concurrent safe.
Unregister() error
}

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# Metric Noop
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/metric/noop)](https://pkg.go.dev/go.opentelemetry.io/otel/metric/noop)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package noop provides an implementation of the OpenTelemetry metric API that
// produces no telemetry and minimizes used computation resources.
//
// Using this package to implement the OpenTelemetry metric API will
// effectively disable OpenTelemetry.
//
// This implementation can be embedded in other implementations of the
// OpenTelemetry metric API. Doing so will mean the implementation defaults to
// no operation for methods it does not implement.
package noop // import "go.opentelemetry.io/otel/metric/noop"
import (
"context"
"go.opentelemetry.io/otel/metric"
"go.opentelemetry.io/otel/metric/embedded"
)
var (
// Compile-time check this implements the OpenTelemetry API.
_ metric.MeterProvider = MeterProvider{}
_ metric.Meter = Meter{}
_ metric.Observer = Observer{}
_ metric.Registration = Registration{}
_ metric.Int64Counter = Int64Counter{}
_ metric.Float64Counter = Float64Counter{}
_ metric.Int64UpDownCounter = Int64UpDownCounter{}
_ metric.Float64UpDownCounter = Float64UpDownCounter{}
_ metric.Int64Histogram = Int64Histogram{}
_ metric.Float64Histogram = Float64Histogram{}
_ metric.Int64Gauge = Int64Gauge{}
_ metric.Float64Gauge = Float64Gauge{}
_ metric.Int64ObservableCounter = Int64ObservableCounter{}
_ metric.Float64ObservableCounter = Float64ObservableCounter{}
_ metric.Int64ObservableGauge = Int64ObservableGauge{}
_ metric.Float64ObservableGauge = Float64ObservableGauge{}
_ metric.Int64ObservableUpDownCounter = Int64ObservableUpDownCounter{}
_ metric.Float64ObservableUpDownCounter = Float64ObservableUpDownCounter{}
_ metric.Int64Observer = Int64Observer{}
_ metric.Float64Observer = Float64Observer{}
)
// MeterProvider is an OpenTelemetry No-Op MeterProvider.
type MeterProvider struct{ embedded.MeterProvider }
// NewMeterProvider returns a MeterProvider that does not record any telemetry.
func NewMeterProvider() MeterProvider {
return MeterProvider{}
}
// Meter returns an OpenTelemetry Meter that does not record any telemetry.
func (MeterProvider) Meter(string, ...metric.MeterOption) metric.Meter {
return Meter{}
}
// Meter is an OpenTelemetry No-Op Meter.
type Meter struct{ embedded.Meter }
// Int64Counter returns a Counter used to record int64 measurements that
// produces no telemetry.
func (Meter) Int64Counter(string, ...metric.Int64CounterOption) (metric.Int64Counter, error) {
return Int64Counter{}, nil
}
// Int64UpDownCounter returns an UpDownCounter used to record int64
// measurements that produces no telemetry.
func (Meter) Int64UpDownCounter(string, ...metric.Int64UpDownCounterOption) (metric.Int64UpDownCounter, error) {
return Int64UpDownCounter{}, nil
}
// Int64Histogram returns a Histogram used to record int64 measurements that
// produces no telemetry.
func (Meter) Int64Histogram(string, ...metric.Int64HistogramOption) (metric.Int64Histogram, error) {
return Int64Histogram{}, nil
}
// Int64Gauge returns a Gauge used to record int64 measurements that
// produces no telemetry.
func (Meter) Int64Gauge(string, ...metric.Int64GaugeOption) (metric.Int64Gauge, error) {
return Int64Gauge{}, nil
}
// Int64ObservableCounter returns an ObservableCounter used to record int64
// measurements that produces no telemetry.
func (Meter) Int64ObservableCounter(
string,
...metric.Int64ObservableCounterOption,
) (metric.Int64ObservableCounter, error) {
return Int64ObservableCounter{}, nil
}
// Int64ObservableUpDownCounter returns an ObservableUpDownCounter used to
// record int64 measurements that produces no telemetry.
func (Meter) Int64ObservableUpDownCounter(
string,
...metric.Int64ObservableUpDownCounterOption,
) (metric.Int64ObservableUpDownCounter, error) {
return Int64ObservableUpDownCounter{}, nil
}
// Int64ObservableGauge returns an ObservableGauge used to record int64
// measurements that produces no telemetry.
func (Meter) Int64ObservableGauge(string, ...metric.Int64ObservableGaugeOption) (metric.Int64ObservableGauge, error) {
return Int64ObservableGauge{}, nil
}
// Float64Counter returns a Counter used to record int64 measurements that
// produces no telemetry.
func (Meter) Float64Counter(string, ...metric.Float64CounterOption) (metric.Float64Counter, error) {
return Float64Counter{}, nil
}
// Float64UpDownCounter returns an UpDownCounter used to record int64
// measurements that produces no telemetry.
func (Meter) Float64UpDownCounter(string, ...metric.Float64UpDownCounterOption) (metric.Float64UpDownCounter, error) {
return Float64UpDownCounter{}, nil
}
// Float64Histogram returns a Histogram used to record int64 measurements that
// produces no telemetry.
func (Meter) Float64Histogram(string, ...metric.Float64HistogramOption) (metric.Float64Histogram, error) {
return Float64Histogram{}, nil
}
// Float64Gauge returns a Gauge used to record float64 measurements that
// produces no telemetry.
func (Meter) Float64Gauge(string, ...metric.Float64GaugeOption) (metric.Float64Gauge, error) {
return Float64Gauge{}, nil
}
// Float64ObservableCounter returns an ObservableCounter used to record int64
// measurements that produces no telemetry.
func (Meter) Float64ObservableCounter(
string,
...metric.Float64ObservableCounterOption,
) (metric.Float64ObservableCounter, error) {
return Float64ObservableCounter{}, nil
}
// Float64ObservableUpDownCounter returns an ObservableUpDownCounter used to
// record int64 measurements that produces no telemetry.
func (Meter) Float64ObservableUpDownCounter(
string,
...metric.Float64ObservableUpDownCounterOption,
) (metric.Float64ObservableUpDownCounter, error) {
return Float64ObservableUpDownCounter{}, nil
}
// Float64ObservableGauge returns an ObservableGauge used to record int64
// measurements that produces no telemetry.
func (Meter) Float64ObservableGauge(
string,
...metric.Float64ObservableGaugeOption,
) (metric.Float64ObservableGauge, error) {
return Float64ObservableGauge{}, nil
}
// RegisterCallback performs no operation.
func (Meter) RegisterCallback(metric.Callback, ...metric.Observable) (metric.Registration, error) {
return Registration{}, nil
}
// Observer acts as a recorder of measurements for multiple instruments in a
// Callback, it performing no operation.
type Observer struct{ embedded.Observer }
// ObserveFloat64 performs no operation.
func (Observer) ObserveFloat64(metric.Float64Observable, float64, ...metric.ObserveOption) {
}
// ObserveInt64 performs no operation.
func (Observer) ObserveInt64(metric.Int64Observable, int64, ...metric.ObserveOption) {
}
// Registration is the registration of a Callback with a No-Op Meter.
type Registration struct{ embedded.Registration }
// Unregister unregisters the Callback the Registration represents with the
// No-Op Meter. This will always return nil because the No-Op Meter performs no
// operation, including hold any record of registrations.
func (Registration) Unregister() error { return nil }
// Int64Counter is an OpenTelemetry Counter used to record int64 measurements.
// It produces no telemetry.
type Int64Counter struct{ embedded.Int64Counter }
// Add performs no operation.
func (Int64Counter) Add(context.Context, int64, ...metric.AddOption) {}
// Float64Counter is an OpenTelemetry Counter used to record float64
// measurements. It produces no telemetry.
type Float64Counter struct{ embedded.Float64Counter }
// Add performs no operation.
func (Float64Counter) Add(context.Context, float64, ...metric.AddOption) {}
// Int64UpDownCounter is an OpenTelemetry UpDownCounter used to record int64
// measurements. It produces no telemetry.
type Int64UpDownCounter struct{ embedded.Int64UpDownCounter }
// Add performs no operation.
func (Int64UpDownCounter) Add(context.Context, int64, ...metric.AddOption) {}
// Float64UpDownCounter is an OpenTelemetry UpDownCounter used to record
// float64 measurements. It produces no telemetry.
type Float64UpDownCounter struct{ embedded.Float64UpDownCounter }
// Add performs no operation.
func (Float64UpDownCounter) Add(context.Context, float64, ...metric.AddOption) {}
// Int64Histogram is an OpenTelemetry Histogram used to record int64
// measurements. It produces no telemetry.
type Int64Histogram struct{ embedded.Int64Histogram }
// Record performs no operation.
func (Int64Histogram) Record(context.Context, int64, ...metric.RecordOption) {}
// Float64Histogram is an OpenTelemetry Histogram used to record float64
// measurements. It produces no telemetry.
type Float64Histogram struct{ embedded.Float64Histogram }
// Record performs no operation.
func (Float64Histogram) Record(context.Context, float64, ...metric.RecordOption) {}
// Int64Gauge is an OpenTelemetry Gauge used to record instantaneous int64
// measurements. It produces no telemetry.
type Int64Gauge struct{ embedded.Int64Gauge }
// Record performs no operation.
func (Int64Gauge) Record(context.Context, int64, ...metric.RecordOption) {}
// Float64Gauge is an OpenTelemetry Gauge used to record instantaneous float64
// measurements. It produces no telemetry.
type Float64Gauge struct{ embedded.Float64Gauge }
// Record performs no operation.
func (Float64Gauge) Record(context.Context, float64, ...metric.RecordOption) {}
// Int64ObservableCounter is an OpenTelemetry ObservableCounter used to record
// int64 measurements. It produces no telemetry.
type Int64ObservableCounter struct {
metric.Int64Observable
embedded.Int64ObservableCounter
}
// Float64ObservableCounter is an OpenTelemetry ObservableCounter used to record
// float64 measurements. It produces no telemetry.
type Float64ObservableCounter struct {
metric.Float64Observable
embedded.Float64ObservableCounter
}
// Int64ObservableGauge is an OpenTelemetry ObservableGauge used to record
// int64 measurements. It produces no telemetry.
type Int64ObservableGauge struct {
metric.Int64Observable
embedded.Int64ObservableGauge
}
// Float64ObservableGauge is an OpenTelemetry ObservableGauge used to record
// float64 measurements. It produces no telemetry.
type Float64ObservableGauge struct {
metric.Float64Observable
embedded.Float64ObservableGauge
}
// Int64ObservableUpDownCounter is an OpenTelemetry ObservableUpDownCounter
// used to record int64 measurements. It produces no telemetry.
type Int64ObservableUpDownCounter struct {
metric.Int64Observable
embedded.Int64ObservableUpDownCounter
}
// Float64ObservableUpDownCounter is an OpenTelemetry ObservableUpDownCounter
// used to record float64 measurements. It produces no telemetry.
type Float64ObservableUpDownCounter struct {
metric.Float64Observable
embedded.Float64ObservableUpDownCounter
}
// Int64Observer is a recorder of int64 measurements that performs no operation.
type Int64Observer struct{ embedded.Int64Observer }
// Observe performs no operation.
func (Int64Observer) Observe(int64, ...metric.ObserveOption) {}
// Float64Observer is a recorder of float64 measurements that performs no
// operation.
type Float64Observer struct{ embedded.Float64Observer }
// Observe performs no operation.
func (Float64Observer) Observe(float64, ...metric.ObserveOption) {}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/metric/embedded"
)
// Float64Counter is an instrument that records increasing float64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64Counter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64Counter
// Add records a change to the counter.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Add(ctx context.Context, incr float64, options ...AddOption)
}
// Float64CounterConfig contains options for synchronous counter instruments that
// record float64 values.
type Float64CounterConfig struct {
description string
unit string
}
// NewFloat64CounterConfig returns a new [Float64CounterConfig] with all opts
// applied.
func NewFloat64CounterConfig(opts ...Float64CounterOption) Float64CounterConfig {
var config Float64CounterConfig
for _, o := range opts {
config = o.applyFloat64Counter(config)
}
return config
}
// Description returns the configured description.
func (c Float64CounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64CounterConfig) Unit() string {
return c.unit
}
// Float64CounterOption applies options to a [Float64CounterConfig]. See
// [InstrumentOption] for other options that can be used as a
// Float64CounterOption.
type Float64CounterOption interface {
applyFloat64Counter(Float64CounterConfig) Float64CounterConfig
}
// Float64UpDownCounter is an instrument that records increasing or decreasing
// float64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64UpDownCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64UpDownCounter
// Add records a change to the counter.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Add(ctx context.Context, incr float64, options ...AddOption)
}
// Float64UpDownCounterConfig contains options for synchronous counter
// instruments that record float64 values.
type Float64UpDownCounterConfig struct {
description string
unit string
}
// NewFloat64UpDownCounterConfig returns a new [Float64UpDownCounterConfig]
// with all opts applied.
func NewFloat64UpDownCounterConfig(opts ...Float64UpDownCounterOption) Float64UpDownCounterConfig {
var config Float64UpDownCounterConfig
for _, o := range opts {
config = o.applyFloat64UpDownCounter(config)
}
return config
}
// Description returns the configured description.
func (c Float64UpDownCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64UpDownCounterConfig) Unit() string {
return c.unit
}
// Float64UpDownCounterOption applies options to a
// [Float64UpDownCounterConfig]. See [InstrumentOption] for other options that
// can be used as a Float64UpDownCounterOption.
type Float64UpDownCounterOption interface {
applyFloat64UpDownCounter(Float64UpDownCounterConfig) Float64UpDownCounterConfig
}
// Float64Histogram is an instrument that records a distribution of float64
// values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64Histogram interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64Histogram
// Record adds an additional value to the distribution.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Record(ctx context.Context, incr float64, options ...RecordOption)
}
// Float64HistogramConfig contains options for synchronous histogram
// instruments that record float64 values.
type Float64HistogramConfig struct {
description string
unit string
explicitBucketBoundaries []float64
}
// NewFloat64HistogramConfig returns a new [Float64HistogramConfig] with all
// opts applied.
func NewFloat64HistogramConfig(opts ...Float64HistogramOption) Float64HistogramConfig {
var config Float64HistogramConfig
for _, o := range opts {
config = o.applyFloat64Histogram(config)
}
return config
}
// Description returns the configured description.
func (c Float64HistogramConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64HistogramConfig) Unit() string {
return c.unit
}
// ExplicitBucketBoundaries returns the configured explicit bucket boundaries.
func (c Float64HistogramConfig) ExplicitBucketBoundaries() []float64 {
return c.explicitBucketBoundaries
}
// Float64HistogramOption applies options to a [Float64HistogramConfig]. See
// [InstrumentOption] for other options that can be used as a
// Float64HistogramOption.
type Float64HistogramOption interface {
applyFloat64Histogram(Float64HistogramConfig) Float64HistogramConfig
}
// Float64Gauge is an instrument that records instantaneous float64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Float64Gauge interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Float64Gauge
// Record records the instantaneous value.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Record(ctx context.Context, value float64, options ...RecordOption)
}
// Float64GaugeConfig contains options for synchronous gauge instruments that
// record float64 values.
type Float64GaugeConfig struct {
description string
unit string
}
// NewFloat64GaugeConfig returns a new [Float64GaugeConfig] with all opts
// applied.
func NewFloat64GaugeConfig(opts ...Float64GaugeOption) Float64GaugeConfig {
var config Float64GaugeConfig
for _, o := range opts {
config = o.applyFloat64Gauge(config)
}
return config
}
// Description returns the configured description.
func (c Float64GaugeConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Float64GaugeConfig) Unit() string {
return c.unit
}
// Float64GaugeOption applies options to a [Float64GaugeConfig]. See
// [InstrumentOption] for other options that can be used as a
// Float64GaugeOption.
type Float64GaugeOption interface {
applyFloat64Gauge(Float64GaugeConfig) Float64GaugeConfig
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package metric // import "go.opentelemetry.io/otel/metric"
import (
"context"
"go.opentelemetry.io/otel/metric/embedded"
)
// Int64Counter is an instrument that records increasing int64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64Counter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64Counter
// Add records a change to the counter.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Add(ctx context.Context, incr int64, options ...AddOption)
}
// Int64CounterConfig contains options for synchronous counter instruments that
// record int64 values.
type Int64CounterConfig struct {
description string
unit string
}
// NewInt64CounterConfig returns a new [Int64CounterConfig] with all opts
// applied.
func NewInt64CounterConfig(opts ...Int64CounterOption) Int64CounterConfig {
var config Int64CounterConfig
for _, o := range opts {
config = o.applyInt64Counter(config)
}
return config
}
// Description returns the configured description.
func (c Int64CounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64CounterConfig) Unit() string {
return c.unit
}
// Int64CounterOption applies options to a [Int64CounterConfig]. See
// [InstrumentOption] for other options that can be used as an
// Int64CounterOption.
type Int64CounterOption interface {
applyInt64Counter(Int64CounterConfig) Int64CounterConfig
}
// Int64UpDownCounter is an instrument that records increasing or decreasing
// int64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64UpDownCounter interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64UpDownCounter
// Add records a change to the counter.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Add(ctx context.Context, incr int64, options ...AddOption)
}
// Int64UpDownCounterConfig contains options for synchronous counter
// instruments that record int64 values.
type Int64UpDownCounterConfig struct {
description string
unit string
}
// NewInt64UpDownCounterConfig returns a new [Int64UpDownCounterConfig] with
// all opts applied.
func NewInt64UpDownCounterConfig(opts ...Int64UpDownCounterOption) Int64UpDownCounterConfig {
var config Int64UpDownCounterConfig
for _, o := range opts {
config = o.applyInt64UpDownCounter(config)
}
return config
}
// Description returns the configured description.
func (c Int64UpDownCounterConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64UpDownCounterConfig) Unit() string {
return c.unit
}
// Int64UpDownCounterOption applies options to a [Int64UpDownCounterConfig].
// See [InstrumentOption] for other options that can be used as an
// Int64UpDownCounterOption.
type Int64UpDownCounterOption interface {
applyInt64UpDownCounter(Int64UpDownCounterConfig) Int64UpDownCounterConfig
}
// Int64Histogram is an instrument that records a distribution of int64
// values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64Histogram interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64Histogram
// Record adds an additional value to the distribution.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Record(ctx context.Context, incr int64, options ...RecordOption)
}
// Int64HistogramConfig contains options for synchronous histogram instruments
// that record int64 values.
type Int64HistogramConfig struct {
description string
unit string
explicitBucketBoundaries []float64
}
// NewInt64HistogramConfig returns a new [Int64HistogramConfig] with all opts
// applied.
func NewInt64HistogramConfig(opts ...Int64HistogramOption) Int64HistogramConfig {
var config Int64HistogramConfig
for _, o := range opts {
config = o.applyInt64Histogram(config)
}
return config
}
// Description returns the configured description.
func (c Int64HistogramConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64HistogramConfig) Unit() string {
return c.unit
}
// ExplicitBucketBoundaries returns the configured explicit bucket boundaries.
func (c Int64HistogramConfig) ExplicitBucketBoundaries() []float64 {
return c.explicitBucketBoundaries
}
// Int64HistogramOption applies options to a [Int64HistogramConfig]. See
// [InstrumentOption] for other options that can be used as an
// Int64HistogramOption.
type Int64HistogramOption interface {
applyInt64Histogram(Int64HistogramConfig) Int64HistogramConfig
}
// Int64Gauge is an instrument that records instantaneous int64 values.
//
// Warning: Methods may be added to this interface in minor releases. See
// package documentation on API implementation for information on how to set
// default behavior for unimplemented methods.
type Int64Gauge interface {
// Users of the interface can ignore this. This embedded type is only used
// by implementations of this interface. See the "API Implementations"
// section of the package documentation for more information.
embedded.Int64Gauge
// Record records the instantaneous value.
//
// Use the WithAttributeSet (or, if performance is not a concern,
// the WithAttributes) option to include measurement attributes.
Record(ctx context.Context, value int64, options ...RecordOption)
}
// Int64GaugeConfig contains options for synchronous gauge instruments that
// record int64 values.
type Int64GaugeConfig struct {
description string
unit string
}
// NewInt64GaugeConfig returns a new [Int64GaugeConfig] with all opts
// applied.
func NewInt64GaugeConfig(opts ...Int64GaugeOption) Int64GaugeConfig {
var config Int64GaugeConfig
for _, o := range opts {
config = o.applyInt64Gauge(config)
}
return config
}
// Description returns the configured description.
func (c Int64GaugeConfig) Description() string {
return c.description
}
// Unit returns the configured unit.
func (c Int64GaugeConfig) Unit() string {
return c.unit
}
// Int64GaugeOption applies options to a [Int64GaugeConfig]. See
// [InstrumentOption] for other options that can be used as a
// Int64GaugeOption.
type Int64GaugeOption interface {
applyInt64Gauge(Int64GaugeConfig) Int64GaugeConfig
}

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vendor/go.opentelemetry.io/otel/propagation.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/propagation"
)
// GetTextMapPropagator returns the global TextMapPropagator. If none has been
// set, a No-Op TextMapPropagator is returned.
func GetTextMapPropagator() propagation.TextMapPropagator {
return global.TextMapPropagator()
}
// SetTextMapPropagator sets propagator as the global TextMapPropagator.
func SetTextMapPropagator(propagator propagation.TextMapPropagator) {
global.SetTextMapPropagator(propagator)
}

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# Propagation
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/propagation)](https://pkg.go.dev/go.opentelemetry.io/otel/propagation)

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vendor/go.opentelemetry.io/otel/propagation/baggage.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package propagation // import "go.opentelemetry.io/otel/propagation"
import (
"context"
"go.opentelemetry.io/otel/baggage"
)
const baggageHeader = "baggage"
// Baggage is a propagator that supports the W3C Baggage format.
//
// This propagates user-defined baggage associated with a trace. The complete
// specification is defined at https://www.w3.org/TR/baggage/.
type Baggage struct{}
var _ TextMapPropagator = Baggage{}
// Inject sets baggage key-values from ctx into the carrier.
func (Baggage) Inject(ctx context.Context, carrier TextMapCarrier) {
bStr := baggage.FromContext(ctx).String()
if bStr != "" {
carrier.Set(baggageHeader, bStr)
}
}
// Extract returns a copy of parent with the baggage from the carrier added.
// If carrier implements [ValuesGetter] (e.g. [HeaderCarrier]), Values is invoked
// for multiple values extraction. Otherwise, Get is called.
func (Baggage) Extract(parent context.Context, carrier TextMapCarrier) context.Context {
if multiCarrier, ok := carrier.(ValuesGetter); ok {
return extractMultiBaggage(parent, multiCarrier)
}
return extractSingleBaggage(parent, carrier)
}
// Fields returns the keys who's values are set with Inject.
func (Baggage) Fields() []string {
return []string{baggageHeader}
}
func extractSingleBaggage(parent context.Context, carrier TextMapCarrier) context.Context {
bStr := carrier.Get(baggageHeader)
if bStr == "" {
return parent
}
bag, err := baggage.Parse(bStr)
if err != nil {
return parent
}
return baggage.ContextWithBaggage(parent, bag)
}
func extractMultiBaggage(parent context.Context, carrier ValuesGetter) context.Context {
bVals := carrier.Values(baggageHeader)
if len(bVals) == 0 {
return parent
}
var members []baggage.Member
for _, bStr := range bVals {
currBag, err := baggage.Parse(bStr)
if err != nil {
continue
}
members = append(members, currBag.Members()...)
}
b, err := baggage.New(members...)
if err != nil || b.Len() == 0 {
return parent
}
return baggage.ContextWithBaggage(parent, b)
}

13
vendor/go.opentelemetry.io/otel/propagation/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
/*
Package propagation contains OpenTelemetry context propagators.
OpenTelemetry propagators are used to extract and inject context data from and
into messages exchanged by applications. The propagator supported by this
package is the W3C Trace Context encoding
(https://www.w3.org/TR/trace-context/), and W3C Baggage
(https://www.w3.org/TR/baggage/).
*/
package propagation // import "go.opentelemetry.io/otel/propagation"

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vendor/go.opentelemetry.io/otel/propagation/propagation.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package propagation // import "go.opentelemetry.io/otel/propagation"
import (
"context"
"net/http"
)
// TextMapCarrier is the storage medium used by a TextMapPropagator.
// See ValuesGetter for how a TextMapCarrier can get multiple values for a key.
type TextMapCarrier interface {
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Get returns the value associated with the passed key.
Get(key string) string
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Set stores the key-value pair.
Set(key, value string)
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Keys lists the keys stored in this carrier.
Keys() []string
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
}
// ValuesGetter can return multiple values for a single key,
// with contrast to TextMapCarrier.Get which returns a single value.
type ValuesGetter interface {
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Values returns all values associated with the passed key.
Values(key string) []string
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
}
// MapCarrier is a TextMapCarrier that uses a map held in memory as a storage
// medium for propagated key-value pairs.
type MapCarrier map[string]string
// Compile time check that MapCarrier implements the TextMapCarrier.
var _ TextMapCarrier = MapCarrier{}
// Get returns the value associated with the passed key.
func (c MapCarrier) Get(key string) string {
return c[key]
}
// Set stores the key-value pair.
func (c MapCarrier) Set(key, value string) {
c[key] = value
}
// Keys lists the keys stored in this carrier.
func (c MapCarrier) Keys() []string {
keys := make([]string, 0, len(c))
for k := range c {
keys = append(keys, k)
}
return keys
}
// HeaderCarrier adapts http.Header to satisfy the TextMapCarrier and ValuesGetter interfaces.
type HeaderCarrier http.Header
// Compile time check that HeaderCarrier implements ValuesGetter.
var _ TextMapCarrier = HeaderCarrier{}
// Compile time check that HeaderCarrier implements TextMapCarrier.
var _ ValuesGetter = HeaderCarrier{}
// Get returns the first value associated with the passed key.
func (hc HeaderCarrier) Get(key string) string {
return http.Header(hc).Get(key)
}
// Values returns all values associated with the passed key.
func (hc HeaderCarrier) Values(key string) []string {
return http.Header(hc).Values(key)
}
// Set stores the key-value pair.
func (hc HeaderCarrier) Set(key, value string) {
http.Header(hc).Set(key, value)
}
// Keys lists the keys stored in this carrier.
func (hc HeaderCarrier) Keys() []string {
keys := make([]string, 0, len(hc))
for k := range hc {
keys = append(keys, k)
}
return keys
}
// TextMapPropagator propagates cross-cutting concerns as key-value text
// pairs within a carrier that travels in-band across process boundaries.
type TextMapPropagator interface {
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Inject set cross-cutting concerns from the Context into the carrier.
Inject(ctx context.Context, carrier TextMapCarrier)
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Extract reads cross-cutting concerns from the carrier into a Context.
// Implementations may check if the carrier implements ValuesGetter,
// to support extraction of multiple values per key.
Extract(ctx context.Context, carrier TextMapCarrier) context.Context
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
// Fields returns the keys whose values are set with Inject.
Fields() []string
// DO NOT CHANGE: any modification will not be backwards compatible and
// must never be done outside of a new major release.
}
type compositeTextMapPropagator []TextMapPropagator
func (p compositeTextMapPropagator) Inject(ctx context.Context, carrier TextMapCarrier) {
for _, i := range p {
i.Inject(ctx, carrier)
}
}
func (p compositeTextMapPropagator) Extract(ctx context.Context, carrier TextMapCarrier) context.Context {
for _, i := range p {
ctx = i.Extract(ctx, carrier)
}
return ctx
}
func (p compositeTextMapPropagator) Fields() []string {
unique := make(map[string]struct{})
for _, i := range p {
for _, k := range i.Fields() {
unique[k] = struct{}{}
}
}
fields := make([]string, 0, len(unique))
for k := range unique {
fields = append(fields, k)
}
return fields
}
// NewCompositeTextMapPropagator returns a unified TextMapPropagator from the
// group of passed TextMapPropagator. This allows different cross-cutting
// concerns to be propagates in a unified manner.
//
// The returned TextMapPropagator will inject and extract cross-cutting
// concerns in the order the TextMapPropagators were provided. Additionally,
// the Fields method will return a de-duplicated slice of the keys that are
// set with the Inject method.
func NewCompositeTextMapPropagator(p ...TextMapPropagator) TextMapPropagator {
return compositeTextMapPropagator(p)
}

156
vendor/go.opentelemetry.io/otel/propagation/trace_context.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package propagation // import "go.opentelemetry.io/otel/propagation"
import (
"context"
"encoding/hex"
"fmt"
"strings"
"go.opentelemetry.io/otel/trace"
)
const (
supportedVersion = 0
maxVersion = 254
traceparentHeader = "traceparent"
tracestateHeader = "tracestate"
delimiter = "-"
)
// TraceContext is a propagator that supports the W3C Trace Context format
// (https://www.w3.org/TR/trace-context/)
//
// This propagator will propagate the traceparent and tracestate headers to
// guarantee traces are not broken. It is up to the users of this propagator
// to choose if they want to participate in a trace by modifying the
// traceparent header and relevant parts of the tracestate header containing
// their proprietary information.
type TraceContext struct{}
var (
_ TextMapPropagator = TraceContext{}
versionPart = fmt.Sprintf("%.2X", supportedVersion)
)
// Inject injects the trace context from ctx into carrier.
func (TraceContext) Inject(ctx context.Context, carrier TextMapCarrier) {
sc := trace.SpanContextFromContext(ctx)
if !sc.IsValid() {
return
}
if ts := sc.TraceState().String(); ts != "" {
carrier.Set(tracestateHeader, ts)
}
// Clear all flags other than the trace-context supported sampling bit.
flags := sc.TraceFlags() & trace.FlagsSampled
var sb strings.Builder
sb.Grow(2 + 32 + 16 + 2 + 3)
_, _ = sb.WriteString(versionPart)
traceID := sc.TraceID()
spanID := sc.SpanID()
flagByte := [1]byte{byte(flags)}
var buf [32]byte
for _, src := range [][]byte{traceID[:], spanID[:], flagByte[:]} {
_ = sb.WriteByte(delimiter[0])
n := hex.Encode(buf[:], src)
_, _ = sb.Write(buf[:n])
}
carrier.Set(traceparentHeader, sb.String())
}
// Extract reads tracecontext from the carrier into a returned Context.
//
// The returned Context will be a copy of ctx and contain the extracted
// tracecontext as the remote SpanContext. If the extracted tracecontext is
// invalid, the passed ctx will be returned directly instead.
func (tc TraceContext) Extract(ctx context.Context, carrier TextMapCarrier) context.Context {
sc := tc.extract(carrier)
if !sc.IsValid() {
return ctx
}
return trace.ContextWithRemoteSpanContext(ctx, sc)
}
func (TraceContext) extract(carrier TextMapCarrier) trace.SpanContext {
h := carrier.Get(traceparentHeader)
if h == "" {
return trace.SpanContext{}
}
var ver [1]byte
if !extractPart(ver[:], &h, 2) {
return trace.SpanContext{}
}
version := int(ver[0])
if version > maxVersion {
return trace.SpanContext{}
}
var scc trace.SpanContextConfig
if !extractPart(scc.TraceID[:], &h, 32) {
return trace.SpanContext{}
}
if !extractPart(scc.SpanID[:], &h, 16) {
return trace.SpanContext{}
}
var opts [1]byte
if !extractPart(opts[:], &h, 2) {
return trace.SpanContext{}
}
if version == 0 && (h != "" || opts[0] > 2) {
// version 0 not allow extra
// version 0 not allow other flag
return trace.SpanContext{}
}
// Clear all flags other than the trace-context supported sampling bit.
scc.TraceFlags = trace.TraceFlags(opts[0]) & trace.FlagsSampled // nolint:gosec // slice size already checked.
// Ignore the error returned here. Failure to parse tracestate MUST NOT
// affect the parsing of traceparent according to the W3C tracecontext
// specification.
scc.TraceState, _ = trace.ParseTraceState(carrier.Get(tracestateHeader))
scc.Remote = true
sc := trace.NewSpanContext(scc)
if !sc.IsValid() {
return trace.SpanContext{}
}
return sc
}
// upperHex detect hex is upper case Unicode characters.
func upperHex(v string) bool {
for _, c := range v {
if c >= 'A' && c <= 'F' {
return true
}
}
return false
}
func extractPart(dst []byte, h *string, n int) bool {
part, left, _ := strings.Cut(*h, delimiter)
*h = left
// hex.Decode decodes unsupported upper-case characters, so exclude explicitly.
if len(part) != n || upperHex(part) {
return false
}
if p, err := hex.Decode(dst, []byte(part)); err != nil || p != n/2 {
return false
}
return true
}
// Fields returns the keys who's values are set with Inject.
func (TraceContext) Fields() []string {
return []string{traceparentHeader, tracestateHeader}
}

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{
"$schema": "https://docs.renovatebot.com/renovate-schema.json",
"extends": [
"config:best-practices",
"helpers:pinGitHubActionDigestsToSemver"
],
"ignorePaths": [],
"labels": ["Skip Changelog", "dependencies"],
"postUpdateOptions" : [
"gomodTidy"
],
"packageRules": [
{
"matchManagers": ["gomod"],
"matchDepTypes": ["indirect"],
"enabled": true
},
{
"matchPackageNames": ["go.opentelemetry.io/build-tools/**"],
"groupName": "build-tools"
},
{
"matchPackageNames": ["google.golang.org/genproto/googleapis/**"],
"groupName": "googleapis"
},
{
"matchPackageNames": ["golang.org/x/**"],
"groupName": "golang.org/x"
},
{
"matchPackageNames": ["go.opentelemetry.io/otel/sdk/log/logtest"],
"enabled": false
}
]
}

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vendor/go.opentelemetry.io/otel/requirements.txt generated vendored Normal file
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codespell==2.4.1

3
vendor/go.opentelemetry.io/otel/semconv/v1.20.0/README.md generated vendored Normal file
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# Semconv v1.20.0
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/semconv/v1.20.0)](https://pkg.go.dev/go.opentelemetry.io/otel/semconv/v1.20.0)

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vendor/go.opentelemetry.io/otel/semconv/v1.20.0/doc.go generated vendored Normal file
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package semconv implements OpenTelemetry semantic conventions.
//
// OpenTelemetry semantic conventions are agreed standardized naming
// patterns for OpenTelemetry things. This package represents the conventions
// as of the v1.20.0 version of the OpenTelemetry specification.
package semconv // import "go.opentelemetry.io/otel/semconv/v1.20.0"

188
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Code generated from semantic convention specification. DO NOT EDIT.
package semconv // import "go.opentelemetry.io/otel/semconv/v1.20.0"
import "go.opentelemetry.io/otel/attribute"
// This semantic convention defines the attributes used to represent a feature
// flag evaluation as an event.
const (
// FeatureFlagKeyKey is the attribute Key conforming to the
// "feature_flag.key" semantic conventions. It represents the unique
// identifier of the feature flag.
//
// Type: string
// RequirementLevel: Required
// Stability: stable
// Examples: 'logo-color'
FeatureFlagKeyKey = attribute.Key("feature_flag.key")
// FeatureFlagProviderNameKey is the attribute Key conforming to the
// "feature_flag.provider_name" semantic conventions. It represents the
// name of the service provider that performs the flag evaluation.
//
// Type: string
// RequirementLevel: Recommended
// Stability: stable
// Examples: 'Flag Manager'
FeatureFlagProviderNameKey = attribute.Key("feature_flag.provider_name")
// FeatureFlagVariantKey is the attribute Key conforming to the
// "feature_flag.variant" semantic conventions. It represents the sHOULD be
// a semantic identifier for a value. If one is unavailable, a stringified
// version of the value can be used.
//
// Type: string
// RequirementLevel: Recommended
// Stability: stable
// Examples: 'red', 'true', 'on'
// Note: A semantic identifier, commonly referred to as a variant, provides
// a means
// for referring to a value without including the value itself. This can
// provide additional context for understanding the meaning behind a value.
// For example, the variant `red` maybe be used for the value `#c05543`.
//
// A stringified version of the value can be used in situations where a
// semantic identifier is unavailable. String representation of the value
// should be determined by the implementer.
FeatureFlagVariantKey = attribute.Key("feature_flag.variant")
)
// FeatureFlagKey returns an attribute KeyValue conforming to the
// "feature_flag.key" semantic conventions. It represents the unique identifier
// of the feature flag.
func FeatureFlagKey(val string) attribute.KeyValue {
return FeatureFlagKeyKey.String(val)
}
// FeatureFlagProviderName returns an attribute KeyValue conforming to the
// "feature_flag.provider_name" semantic conventions. It represents the name of
// the service provider that performs the flag evaluation.
func FeatureFlagProviderName(val string) attribute.KeyValue {
return FeatureFlagProviderNameKey.String(val)
}
// FeatureFlagVariant returns an attribute KeyValue conforming to the
// "feature_flag.variant" semantic conventions. It represents the sHOULD be a
// semantic identifier for a value. If one is unavailable, a stringified
// version of the value can be used.
func FeatureFlagVariant(val string) attribute.KeyValue {
return FeatureFlagVariantKey.String(val)
}
// RPC received/sent message.
const (
// MessageTypeKey is the attribute Key conforming to the "message.type"
// semantic conventions. It represents the whether this is a received or
// sent message.
//
// Type: Enum
// RequirementLevel: Optional
// Stability: stable
MessageTypeKey = attribute.Key("message.type")
// MessageIDKey is the attribute Key conforming to the "message.id"
// semantic conventions. It represents the mUST be calculated as two
// different counters starting from `1` one for sent messages and one for
// received message.
//
// Type: int
// RequirementLevel: Optional
// Stability: stable
// Note: This way we guarantee that the values will be consistent between
// different implementations.
MessageIDKey = attribute.Key("message.id")
// MessageCompressedSizeKey is the attribute Key conforming to the
// "message.compressed_size" semantic conventions. It represents the
// compressed size of the message in bytes.
//
// Type: int
// RequirementLevel: Optional
// Stability: stable
MessageCompressedSizeKey = attribute.Key("message.compressed_size")
// MessageUncompressedSizeKey is the attribute Key conforming to the
// "message.uncompressed_size" semantic conventions. It represents the
// uncompressed size of the message in bytes.
//
// Type: int
// RequirementLevel: Optional
// Stability: stable
MessageUncompressedSizeKey = attribute.Key("message.uncompressed_size")
)
var (
// sent
MessageTypeSent = MessageTypeKey.String("SENT")
// received
MessageTypeReceived = MessageTypeKey.String("RECEIVED")
)
// MessageID returns an attribute KeyValue conforming to the "message.id"
// semantic conventions. It represents the mUST be calculated as two different
// counters starting from `1` one for sent messages and one for received
// message.
func MessageID(val int) attribute.KeyValue {
return MessageIDKey.Int(val)
}
// MessageCompressedSize returns an attribute KeyValue conforming to the
// "message.compressed_size" semantic conventions. It represents the compressed
// size of the message in bytes.
func MessageCompressedSize(val int) attribute.KeyValue {
return MessageCompressedSizeKey.Int(val)
}
// MessageUncompressedSize returns an attribute KeyValue conforming to the
// "message.uncompressed_size" semantic conventions. It represents the
// uncompressed size of the message in bytes.
func MessageUncompressedSize(val int) attribute.KeyValue {
return MessageUncompressedSizeKey.Int(val)
}
// The attributes used to report a single exception associated with a span.
const (
// ExceptionEscapedKey is the attribute Key conforming to the
// "exception.escaped" semantic conventions. It represents the sHOULD be
// set to true if the exception event is recorded at a point where it is
// known that the exception is escaping the scope of the span.
//
// Type: boolean
// RequirementLevel: Optional
// Stability: stable
// Note: An exception is considered to have escaped (or left) the scope of
// a span,
// if that span is ended while the exception is still logically "in
// flight".
// This may be actually "in flight" in some languages (e.g. if the
// exception
// is passed to a Context manager's `__exit__` method in Python) but will
// usually be caught at the point of recording the exception in most
// languages.
//
// It is usually not possible to determine at the point where an exception
// is thrown
// whether it will escape the scope of a span.
// However, it is trivial to know that an exception
// will escape, if one checks for an active exception just before ending
// the span,
// as done in the [example above](#recording-an-exception).
//
// It follows that an exception may still escape the scope of the span
// even if the `exception.escaped` attribute was not set or set to false,
// since the event might have been recorded at a time where it was not
// clear whether the exception will escape.
ExceptionEscapedKey = attribute.Key("exception.escaped")
)
// ExceptionEscaped returns an attribute KeyValue conforming to the
// "exception.escaped" semantic conventions. It represents the sHOULD be set to
// true if the exception event is recorded at a point where it is known that
// the exception is escaping the scope of the span.
func ExceptionEscaped(val bool) attribute.KeyValue {
return ExceptionEscapedKey.Bool(val)
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.20.0"
const (
// ExceptionEventName is the name of the Span event representing an exception.
ExceptionEventName = "exception"
)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.20.0"
// HTTP scheme attributes.
var (
HTTPSchemeHTTP = HTTPSchemeKey.String("http")
HTTPSchemeHTTPS = HTTPSchemeKey.String("https")
)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.20.0"
// SchemaURL is the schema URL that matches the version of the semantic conventions
// that this package defines. Semconv packages starting from v1.4.0 must declare
// non-empty schema URL in the form https://opentelemetry.io/schemas/<version>
const SchemaURL = "https://opentelemetry.io/schemas/1.20.0"

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# Semconv v1.26.0
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/semconv/v1.26.0)](https://pkg.go.dev/go.opentelemetry.io/otel/semconv/v1.26.0)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package semconv implements OpenTelemetry semantic conventions.
//
// OpenTelemetry semantic conventions are agreed standardized naming
// patterns for OpenTelemetry things. This package represents the v1.26.0
// version of the OpenTelemetry semantic conventions.
package semconv // import "go.opentelemetry.io/otel/semconv/v1.26.0"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.26.0"
const (
// ExceptionEventName is the name of the Span event representing an exception.
ExceptionEventName = "exception"
)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.26.0"
// SchemaURL is the schema URL that matches the version of the semantic conventions
// that this package defines. Semconv packages starting from v1.4.0 must declare
// non-empty schema URL in the form https://opentelemetry.io/schemas/<version>
const SchemaURL = "https://opentelemetry.io/schemas/1.26.0"

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<!-- Generated. DO NOT MODIFY. -->
# Migration from v1.36.0 to v1.37.0
The `go.opentelemetry.io/otel/semconv/v1.37.0` package should be a drop-in replacement for `go.opentelemetry.io/otel/semconv/v1.36.0` with the following exceptions.
## Removed
The following declarations have been removed.
Refer to the [OpenTelemetry Semantic Conventions documentation] for deprecation instructions.
If the type is not listed in the documentation as deprecated, it has been removed in this version due to lack of applicability or use.
If you use any of these non-deprecated declarations in your Go application, please [open an issue] describing your use-case.
- `ContainerRuntime`
- `ContainerRuntimeKey`
- `GenAIOpenAIRequestServiceTierAuto`
- `GenAIOpenAIRequestServiceTierDefault`
- `GenAIOpenAIRequestServiceTierKey`
- `GenAIOpenAIResponseServiceTier`
- `GenAIOpenAIResponseServiceTierKey`
- `GenAIOpenAIResponseSystemFingerprint`
- `GenAIOpenAIResponseSystemFingerprintKey`
- `GenAISystemAWSBedrock`
- `GenAISystemAnthropic`
- `GenAISystemAzureAIInference`
- `GenAISystemAzureAIOpenAI`
- `GenAISystemCohere`
- `GenAISystemDeepseek`
- `GenAISystemGCPGemini`
- `GenAISystemGCPGenAI`
- `GenAISystemGCPVertexAI`
- `GenAISystemGroq`
- `GenAISystemIBMWatsonxAI`
- `GenAISystemKey`
- `GenAISystemMistralAI`
- `GenAISystemOpenAI`
- `GenAISystemPerplexity`
- `GenAISystemXai`
[OpenTelemetry Semantic Conventions documentation]: https://github.com/open-telemetry/semantic-conventions
[open an issue]: https://github.com/open-telemetry/opentelemetry-go/issues/new?template=Blank+issue

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# Semconv v1.37.0
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/semconv/v1.37.0)](https://pkg.go.dev/go.opentelemetry.io/otel/semconv/v1.37.0)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package semconv implements OpenTelemetry semantic conventions.
//
// OpenTelemetry semantic conventions are agreed standardized naming
// patterns for OpenTelemetry things. This package represents the v1.37.0
// version of the OpenTelemetry semantic conventions.
package semconv // import "go.opentelemetry.io/otel/semconv/v1.37.0"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.37.0"
import (
"reflect"
"go.opentelemetry.io/otel/attribute"
)
// ErrorType returns an [attribute.KeyValue] identifying the error type of err.
//
// If err is nil, the returned attribute has the default value
// [ErrorTypeOther].
//
// If err's type has the method
//
// ErrorType() string
//
// then the returned attribute has the value of err.ErrorType(). Otherwise, the
// returned attribute has a value derived from the concrete type of err.
//
// The key of the returned attribute is [ErrorTypeKey].
func ErrorType(err error) attribute.KeyValue {
if err == nil {
return ErrorTypeOther
}
return ErrorTypeKey.String(errorType(err))
}
func errorType(err error) string {
var s string
if et, ok := err.(interface{ ErrorType() string }); ok {
// Prioritize the ErrorType method if available.
s = et.ErrorType()
}
if s == "" {
// Fallback to reflection if the ErrorType method is not supported or
// returns an empty value.
t := reflect.TypeOf(err)
pkg, name := t.PkgPath(), t.Name()
if pkg != "" && name != "" {
s = pkg + "." + name
} else {
// The type has no package path or name (predeclared, not-defined,
// or alias for a not-defined type).
//
// This is not guaranteed to be unique, but is a best effort.
s = t.String()
}
}
return s
}

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.37.0"
const (
// ExceptionEventName is the name of the Span event representing an exception.
ExceptionEventName = "exception"
)

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package semconv // import "go.opentelemetry.io/otel/semconv/v1.37.0"
// SchemaURL is the schema URL that matches the version of the semantic conventions
// that this package defines. Semconv packages starting from v1.4.0 must declare
// non-empty schema URL in the form https://opentelemetry.io/schemas/<version>
const SchemaURL = "https://opentelemetry.io/schemas/1.37.0"

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/trace"
)
// Tracer creates a named tracer that implements Tracer interface.
// If the name is an empty string then provider uses default name.
//
// This is short for GetTracerProvider().Tracer(name, opts...)
func Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
return GetTracerProvider().Tracer(name, opts...)
}
// GetTracerProvider returns the registered global trace provider.
// If none is registered then an instance of NoopTracerProvider is returned.
//
// Use the trace provider to create a named tracer. E.g.
//
// tracer := otel.GetTracerProvider().Tracer("example.com/foo")
//
// or
//
// tracer := otel.Tracer("example.com/foo")
func GetTracerProvider() trace.TracerProvider {
return global.TracerProvider()
}
// SetTracerProvider registers `tp` as the global trace provider.
func SetTracerProvider(tp trace.TracerProvider) {
global.SetTracerProvider(tp)
}

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# Trace API
[![PkgGoDev](https://pkg.go.dev/badge/go.opentelemetry.io/otel/trace)](https://pkg.go.dev/go.opentelemetry.io/otel/trace)

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