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61 lines
2.5 KiB
Go
61 lines
2.5 KiB
Go
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// 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 metric // import "go.opentelemetry.io/otel/metric"
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import (
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"context"
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"go.opentelemetry.io/otel/metric/instrument"
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"go.opentelemetry.io/otel/metric/instrument/asyncfloat64"
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"go.opentelemetry.io/otel/metric/instrument/asyncint64"
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"go.opentelemetry.io/otel/metric/instrument/syncfloat64"
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"go.opentelemetry.io/otel/metric/instrument/syncint64"
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)
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// MeterProvider provides access to named Meter instances, for instrumenting
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// an application or library.
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type MeterProvider interface {
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// Meter creates an instance of a `Meter` interface. The instrumentationName
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// must be the name of the library providing instrumentation. This name may
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// be the same as the instrumented code only if that code provides built-in
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// instrumentation. If the instrumentationName is empty, then a
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// implementation defined default name will be used instead.
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Meter(instrumentationName string, opts ...MeterOption) Meter
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}
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// Meter provides access to instrument instances for recording metrics.
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type Meter interface {
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// AsyncInt64 is the namespace for the Asynchronous Integer instruments.
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//
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// To Observe data with instruments it must be registered in a callback.
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AsyncInt64() asyncint64.InstrumentProvider
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// AsyncFloat64 is the namespace for the Asynchronous Float instruments
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//
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// To Observe data with instruments it must be registered in a callback.
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AsyncFloat64() asyncfloat64.InstrumentProvider
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// RegisterCallback captures the function that will be called during Collect.
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//
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// It is only valid to call Observe within the scope of the passed function,
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// and only on the instruments that were registered with this call.
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RegisterCallback(insts []instrument.Asynchronous, function func(context.Context)) error
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// SyncInt64 is the namespace for the Synchronous Integer instruments
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SyncInt64() syncint64.InstrumentProvider
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// SyncFloat64 is the namespace for the Synchronous Float instruments
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SyncFloat64() syncfloat64.InstrumentProvider
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}
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