DockerCLI/vendor/go.opentelemetry.io/otel/metric/sdkapi/descriptor.go

71 lines
2.1 KiB
Go

// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sdkapi // import "go.opentelemetry.io/otel/metric/sdkapi"
import (
"go.opentelemetry.io/otel/metric/number"
"go.opentelemetry.io/otel/metric/unit"
)
// Descriptor contains all the settings that describe an instrument,
// including its name, metric kind, number kind, and the configurable
// options.
type Descriptor struct {
name string
instrumentKind InstrumentKind
numberKind number.Kind
description string
unit unit.Unit
}
// NewDescriptor returns a Descriptor with the given contents.
func NewDescriptor(name string, ikind InstrumentKind, nkind number.Kind, description string, unit unit.Unit) Descriptor {
return Descriptor{
name: name,
instrumentKind: ikind,
numberKind: nkind,
description: description,
unit: unit,
}
}
// Name returns the metric instrument's name.
func (d Descriptor) Name() string {
return d.name
}
// InstrumentKind returns the specific kind of instrument.
func (d Descriptor) InstrumentKind() InstrumentKind {
return d.instrumentKind
}
// Description provides a human-readable description of the metric
// instrument.
func (d Descriptor) Description() string {
return d.description
}
// Unit describes the units of the metric instrument. Unitless
// metrics return the empty string.
func (d Descriptor) Unit() unit.Unit {
return d.unit
}
// NumberKind returns whether this instrument is declared over int64,
// float64, or uint64 values.
func (d Descriptor) NumberKind() number.Kind {
return d.numberKind
}