blob: 97867d9b7d61b25263e0c66e0a598ab8728af97b [file] [log] [blame]
Joey Armstronge8c091f2023-01-17 16:56:26 -05001// Copyright The OpenTelemetry Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package metric
16
17import (
18 "context"
19
20 "go.opentelemetry.io/otel/label"
21)
22
23type NoopMeterProvider struct{}
24
25type noopInstrument struct{}
26type noopBoundInstrument struct{}
27type NoopSync struct{ noopInstrument }
28type NoopAsync struct{ noopInstrument }
29
30var _ MeterProvider = NoopMeterProvider{}
31var _ SyncImpl = NoopSync{}
32var _ BoundSyncImpl = noopBoundInstrument{}
33var _ AsyncImpl = NoopAsync{}
34
35func (NoopMeterProvider) Meter(_ string, _ ...MeterOption) Meter {
36 return Meter{}
37}
38
39func (noopInstrument) Implementation() interface{} {
40 return nil
41}
42
43func (noopInstrument) Descriptor() Descriptor {
44 return Descriptor{}
45}
46
47func (noopBoundInstrument) RecordOne(context.Context, Number) {
48}
49
50func (noopBoundInstrument) Unbind() {
51}
52
53func (NoopSync) Bind([]label.KeyValue) BoundSyncImpl {
54 return noopBoundInstrument{}
55}
56
57func (NoopSync) RecordOne(context.Context, Number, []label.KeyValue) {
58}