65 lines
1.8 KiB
Go
65 lines
1.8 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 sdkapi // import "go.opentelemetry.io/otel/metric/sdkapi"
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import (
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"context"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/metric/number"
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)
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type noopInstrument struct{}
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type noopBoundInstrument struct{}
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type noopSyncInstrument struct{ noopInstrument }
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type noopAsyncInstrument struct{ noopInstrument }
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var _ SyncImpl = noopSyncInstrument{}
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var _ BoundSyncImpl = noopBoundInstrument{}
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var _ AsyncImpl = noopAsyncInstrument{}
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// NewNoopSyncInstrument returns a No-op implementation of the
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// synchronous instrument interface.
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func NewNoopSyncInstrument() SyncImpl {
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return noopSyncInstrument{}
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}
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// NewNoopAsyncInstrument returns a No-op implementation of the
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// asynchronous instrument interface.
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func NewNoopAsyncInstrument() AsyncImpl {
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return noopAsyncInstrument{}
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}
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func (noopInstrument) Implementation() interface{} {
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return nil
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}
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func (noopInstrument) Descriptor() Descriptor {
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return Descriptor{}
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}
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func (noopBoundInstrument) RecordOne(context.Context, number.Number) {
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}
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func (noopBoundInstrument) Unbind() {
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}
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func (noopSyncInstrument) Bind([]attribute.KeyValue) BoundSyncImpl {
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return noopBoundInstrument{}
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}
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func (noopSyncInstrument) RecordOne(context.Context, number.Number, []attribute.KeyValue) {
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}
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