package registry

import "go.opentelemetry.io/otel/metric/registry"

Package registry provides a non-standalone implementation of MeterProvider that adds uniqueness checking for instrument descriptors on top of other MeterProvider it wraps.

This package is currently in a pre-GA phase. Backwards incompatible changes may be introduced in subsequent minor version releases as we work to track the evolving OpenTelemetry specification and user feedback.

Index ¶

• Variables
• func Compatible(candidate, existing metric.Descriptor) bool
• func NewMetricKindMismatchError(desc metric.Descriptor) error
• func NewUniqueInstrumentMeterImpl(impl metric.MeterImpl) metric.MeterImpl
• type MeterProvider
• func NewMeterProvider(impl metric.MeterImpl) *MeterProvider
• func (p *MeterProvider) Meter(instrumentationName string, opts ...metric.MeterOption) metric.Meter

Package Files ¶

doc.go registry.go

Variables ¶

var ErrMetricKindMismatch = fmt.Errorf(
    "A metric was already registered by this name with another kind or number type")

ErrMetricKindMismatch is the standard error for mismatched metric instrument definitions.

func Compatible ¶ Uses

func Compatible(candidate, existing metric.Descriptor) bool

Compatible determines whether two metric.Descriptors are considered the same for the purpose of uniqueness checking.

func NewMetricKindMismatchError ¶ Uses

func NewMetricKindMismatchError(desc metric.Descriptor) error

NewMetricKindMismatchError formats an error that describes a mismatched metric instrument definition.

func NewUniqueInstrumentMeterImpl ¶ Uses

func NewUniqueInstrumentMeterImpl(impl metric.MeterImpl) metric.MeterImpl

NewUniqueInstrumentMeterImpl returns a wrapped metric.MeterImpl with the addition of uniqueness checking.

type MeterProvider ¶ Uses

type MeterProvider struct {
    // contains filtered or unexported fields
}

MeterProvider is a standard MeterProvider for wrapping `MeterImpl`

func NewMeterProvider ¶ Uses

func NewMeterProvider(impl metric.MeterImpl) *MeterProvider

NewMeterProvider returns a new provider that implements instrument name-uniqueness checking.

func (*MeterProvider) Meter ¶ Uses

func (p *MeterProvider) Meter(instrumentationName string, opts ...metric.MeterOption) metric.Meter

Meter implements MeterProvider.