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91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package instrument // import "go.opentelemetry.io/otel/metric/instrument"
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import "go.opentelemetry.io/otel/metric/unit"
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// Asynchronous instruments are instruments that are updated within a Callback.
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// If an instrument is observed outside of it's callback it should be an error.
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//
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// This interface is used as a grouping mechanism.
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type Asynchronous interface {
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asynchronous()
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}
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// Synchronous instruments are updated in line with application code.
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//
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// This interface is used as a grouping mechanism.
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type Synchronous interface {
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synchronous()
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}
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// Option applies options to all instruments.
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type Option interface {
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Float64ObserverOption
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Int64ObserverOption
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Float64Option
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Int64Option
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}
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type descOpt string
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func (o descOpt) applyFloat64(c Float64Config) Float64Config {
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c.description = string(o)
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return c
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}
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func (o descOpt) applyInt64(c Int64Config) Int64Config {
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c.description = string(o)
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return c
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}
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func (o descOpt) applyFloat64Observer(c Float64ObserverConfig) Float64ObserverConfig {
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c.description = string(o)
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return c
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}
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func (o descOpt) applyInt64Observer(c Int64ObserverConfig) Int64ObserverConfig {
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c.description = string(o)
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return c
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}
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// WithDescription sets the instrument description.
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func WithDescription(desc string) Option { return descOpt(desc) }
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type unitOpt unit.Unit
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func (o unitOpt) applyFloat64(c Float64Config) Float64Config {
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c.unit = unit.Unit(o)
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return c
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}
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func (o unitOpt) applyInt64(c Int64Config) Int64Config {
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c.unit = unit.Unit(o)
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return c
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}
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func (o unitOpt) applyFloat64Observer(c Float64ObserverConfig) Float64ObserverConfig {
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c.unit = unit.Unit(o)
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return c
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}
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func (o unitOpt) applyInt64Observer(c Int64ObserverConfig) Int64ObserverConfig {
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c.unit = unit.Unit(o)
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return c
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}
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// WithUnit sets the instrument unit.
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func WithUnit(u unit.Unit) Option { return unitOpt(u) }
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