82 lines
2.3 KiB
Go
82 lines
2.3 KiB
Go
// Copyright The OpenTelemetry Authors
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package metric // import "go.opentelemetry.io/otel/metric"
|
|
|
|
import "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 sets the instrumentation attributes.
|
|
//
|
|
// The passed attributes will be de-duplicated.
|
|
func WithInstrumentationAttributes(attr ...attribute.KeyValue) MeterOption {
|
|
return meterOptionFunc(func(config MeterConfig) MeterConfig {
|
|
config.attrs = attribute.NewSet(attr...)
|
|
return config
|
|
})
|
|
}
|
|
|
|
// WithSchemaURL sets the schema URL.
|
|
func WithSchemaURL(schemaURL string) MeterOption {
|
|
return meterOptionFunc(func(config MeterConfig) MeterConfig {
|
|
config.schemaURL = schemaURL
|
|
return config
|
|
})
|
|
}
|