gotosocial/vendor/go.opentelemetry.io/otel/metric/instrument/instrument.go
2023-05-09 18:19:48 +01:00

91 lines
2.4 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 instrument // import "go.opentelemetry.io/otel/metric/instrument"
import "go.opentelemetry.io/otel/metric/unit"
// Asynchronous instruments are instruments that are updated within a Callback.
// If an instrument is observed outside of it's callback it should be an error.
//
// This interface is used as a grouping mechanism.
type Asynchronous interface {
asynchronous()
}
// Synchronous instruments are updated in line with application code.
//
// This interface is used as a grouping mechanism.
type Synchronous interface {
synchronous()
}
// Option applies options to all instruments.
type Option interface {
Float64ObserverOption
Int64ObserverOption
Float64Option
Int64Option
}
type descOpt string
func (o descOpt) applyFloat64(c Float64Config) Float64Config {
c.description = string(o)
return c
}
func (o descOpt) applyInt64(c Int64Config) Int64Config {
c.description = string(o)
return c
}
func (o descOpt) applyFloat64Observer(c Float64ObserverConfig) Float64ObserverConfig {
c.description = string(o)
return c
}
func (o descOpt) applyInt64Observer(c Int64ObserverConfig) Int64ObserverConfig {
c.description = string(o)
return c
}
// WithDescription sets the instrument description.
func WithDescription(desc string) Option { return descOpt(desc) }
type unitOpt unit.Unit
func (o unitOpt) applyFloat64(c Float64Config) Float64Config {
c.unit = unit.Unit(o)
return c
}
func (o unitOpt) applyInt64(c Int64Config) Int64Config {
c.unit = unit.Unit(o)
return c
}
func (o unitOpt) applyFloat64Observer(c Float64ObserverConfig) Float64ObserverConfig {
c.unit = unit.Unit(o)
return c
}
func (o unitOpt) applyInt64Observer(c Int64ObserverConfig) Int64ObserverConfig {
c.unit = unit.Unit(o)
return c
}
// WithUnit sets the instrument unit.
func WithUnit(u unit.Unit) Option { return unitOpt(u) }