1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package otel // import "go.opentelemetry.io/otel"
import (
"go.opentelemetry.io/otel/internal/global"
"go.opentelemetry.io/otel/metric"
)
// Meter returns a Meter from the global MeterProvider. The name must be the
// name of the library providing instrumentation. This name may be the same as
// the instrumented code only if that code provides built-in instrumentation.
// If the name is empty, then a implementation defined default name will be
// used instead.
//
// If this is called before a global MeterProvider is registered the returned
// Meter will be a No-op implementation of a Meter. When a global MeterProvider
// is registered for the first time, the returned Meter, and all the
// instruments it has created or will create, are recreated automatically from
// the new MeterProvider.
//
// This is short for GetMeterProvider().Meter(name).
func Meter(name string, opts ...metric.MeterOption) metric.Meter {
return GetMeterProvider().Meter(name, opts...)
}
// GetMeterProvider returns the registered global meter provider.
//
// If no global GetMeterProvider has been registered, a No-op GetMeterProvider
// implementation is returned. When a global GetMeterProvider is registered for
// the first time, the returned GetMeterProvider, and all the Meters it has
// created or will create, are recreated automatically from the new
// GetMeterProvider.
func GetMeterProvider() metric.MeterProvider {
return global.MeterProvider()
}
// SetMeterProvider registers mp as the global MeterProvider.
func SetMeterProvider(mp metric.MeterProvider) {
global.SetMeterProvider(mp)
}
|
