chore: migrate to gitea

vendor/go.opentelemetry.io/otel/metric/config.go

@@ -0,0 +1,111 @@
+// 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
+	})
+}