104 lines
4.2 KiB
JavaScript
104 lines
4.2 KiB
JavaScript
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/*
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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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* https://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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*/
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import { diag, createNoopMeter, } from '@opentelemetry/api';
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import { Resource } from '@opentelemetry/resources';
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import { MeterProviderSharedState } from './state/MeterProviderSharedState';
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import { MetricCollector } from './state/MetricCollector';
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/**
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* This class implements the {@link MeterProvider} interface.
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*/
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export class MeterProvider {
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constructor(options) {
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var _a;
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this._shutdown = false;
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const resource = Resource.default().merge((_a = options === null || options === void 0 ? void 0 : options.resource) !== null && _a !== void 0 ? _a : Resource.empty());
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this._sharedState = new MeterProviderSharedState(resource);
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if ((options === null || options === void 0 ? void 0 : options.views) != null && options.views.length > 0) {
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for (const view of options.views) {
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this._sharedState.viewRegistry.addView(view);
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}
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}
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if ((options === null || options === void 0 ? void 0 : options.readers) != null && options.readers.length > 0) {
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for (const metricReader of options.readers) {
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this.addMetricReader(metricReader);
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}
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}
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}
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/**
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* Get a meter with the configuration of the MeterProvider.
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*/
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getMeter(name, version = '', options = {}) {
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// https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/metrics/sdk.md#meter-creation
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if (this._shutdown) {
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diag.warn('A shutdown MeterProvider cannot provide a Meter');
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return createNoopMeter();
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}
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return this._sharedState.getMeterSharedState({
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name,
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version,
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schemaUrl: options.schemaUrl,
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}).meter;
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}
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/**
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* Register a {@link MetricReader} to the meter provider. After the
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* registration, the MetricReader can start metrics collection.
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*
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* <p> NOTE: {@link MetricReader} instances MUST be added before creating any instruments.
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* A {@link MetricReader} instance registered later may receive no or incomplete metric data.
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*
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* @param metricReader the metric reader to be registered.
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*
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* @deprecated This method will be removed in SDK 2.0. Please use
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* {@link MeterProviderOptions.readers} via the {@link MeterProvider} constructor instead
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*/
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addMetricReader(metricReader) {
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const collector = new MetricCollector(this._sharedState, metricReader);
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metricReader.setMetricProducer(collector);
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this._sharedState.metricCollectors.push(collector);
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}
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/**
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* Flush all buffered data and shut down the MeterProvider and all registered
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* MetricReaders.
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*
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* Returns a promise which is resolved when all flushes are complete.
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*/
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async shutdown(options) {
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if (this._shutdown) {
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diag.warn('shutdown may only be called once per MeterProvider');
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return;
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}
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this._shutdown = true;
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await Promise.all(this._sharedState.metricCollectors.map(collector => {
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return collector.shutdown(options);
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}));
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}
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/**
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* Notifies all registered MetricReaders to flush any buffered data.
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*
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* Returns a promise which is resolved when all flushes are complete.
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*/
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async forceFlush(options) {
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// do not flush after shutdown
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if (this._shutdown) {
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diag.warn('invalid attempt to force flush after MeterProvider shutdown');
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return;
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}
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await Promise.all(this._sharedState.metricCollectors.map(collector => {
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return collector.forceFlush(options);
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}));
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}
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}
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//# sourceMappingURL=MeterProvider.js.map
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