@opentelemetry/sdk-metrics
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JavaScript
/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { createInstrumentDescriptor } from './InstrumentDescriptor';
import { CounterInstrument, GaugeInstrument, HistogramInstrument, ObservableCounterInstrument, ObservableGaugeInstrument, ObservableUpDownCounterInstrument, UpDownCounterInstrument, } from './Instruments';
import { InstrumentType } from './export/MetricData';
/**
* This class implements the {@link IMeter} interface.
*/
export class Meter {
_meterSharedState;
constructor(meterSharedState) {
this._meterSharedState = meterSharedState;
}
/**
* Create a {@link Gauge} instrument.
*/
createGauge(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.GAUGE, options);
const storage = this._meterSharedState.registerMetricStorage(descriptor);
return new GaugeInstrument(storage, descriptor);
}
/**
* Create a {@link Histogram} instrument.
*/
createHistogram(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.HISTOGRAM, options);
const storage = this._meterSharedState.registerMetricStorage(descriptor);
return new HistogramInstrument(storage, descriptor);
}
/**
* Create a {@link Counter} instrument.
*/
createCounter(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.COUNTER, options);
const storage = this._meterSharedState.registerMetricStorage(descriptor);
return new CounterInstrument(storage, descriptor);
}
/**
* Create a {@link UpDownCounter} instrument.
*/
createUpDownCounter(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.UP_DOWN_COUNTER, options);
const storage = this._meterSharedState.registerMetricStorage(descriptor);
return new UpDownCounterInstrument(storage, descriptor);
}
/**
* Create a {@link ObservableGauge} instrument.
*/
createObservableGauge(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.OBSERVABLE_GAUGE, options);
const storages = this._meterSharedState.registerAsyncMetricStorage(descriptor);
return new ObservableGaugeInstrument(descriptor, storages, this._meterSharedState.observableRegistry);
}
/**
* Create a {@link ObservableCounter} instrument.
*/
createObservableCounter(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.OBSERVABLE_COUNTER, options);
const storages = this._meterSharedState.registerAsyncMetricStorage(descriptor);
return new ObservableCounterInstrument(descriptor, storages, this._meterSharedState.observableRegistry);
}
/**
* Create a {@link ObservableUpDownCounter} instrument.
*/
createObservableUpDownCounter(name, options) {
const descriptor = createInstrumentDescriptor(name, InstrumentType.OBSERVABLE_UP_DOWN_COUNTER, options);
const storages = this._meterSharedState.registerAsyncMetricStorage(descriptor);
return new ObservableUpDownCounterInstrument(descriptor, storages, this._meterSharedState.observableRegistry);
}
/**
* @see {@link Meter.addBatchObservableCallback}
*/
addBatchObservableCallback(callback, observables) {
this._meterSharedState.observableRegistry.addBatchCallback(callback, observables);
}
/**
* @see {@link Meter.removeBatchObservableCallback}
*/
removeBatchObservableCallback(callback, observables) {
this._meterSharedState.observableRegistry.removeBatchCallback(callback, observables);
}
}
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