113 lines
5.4 KiB
JavaScript
113 lines
5.4 KiB
JavaScript
/*
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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 { createInstrumentDescriptorWithView, } from '../InstrumentDescriptor';
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import { Meter } from '../Meter';
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import { isNotNullish } from '../utils';
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import { AsyncMetricStorage } from './AsyncMetricStorage';
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import { MetricStorageRegistry } from './MetricStorageRegistry';
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import { MultiMetricStorage } from './MultiWritableMetricStorage';
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import { ObservableRegistry } from './ObservableRegistry';
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import { SyncMetricStorage } from './SyncMetricStorage';
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import { AttributesProcessor } from '../view/AttributesProcessor';
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/**
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* An internal record for shared meter provider states.
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*/
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export class MeterSharedState {
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constructor(_meterProviderSharedState, _instrumentationScope) {
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this._meterProviderSharedState = _meterProviderSharedState;
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this._instrumentationScope = _instrumentationScope;
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this.metricStorageRegistry = new MetricStorageRegistry();
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this.observableRegistry = new ObservableRegistry();
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this.meter = new Meter(this);
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}
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registerMetricStorage(descriptor) {
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const storages = this._registerMetricStorage(descriptor, SyncMetricStorage);
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if (storages.length === 1) {
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return storages[0];
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}
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return new MultiMetricStorage(storages);
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}
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registerAsyncMetricStorage(descriptor) {
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const storages = this._registerMetricStorage(descriptor, AsyncMetricStorage);
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return storages;
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}
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/**
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* @param collector opaque handle of {@link MetricCollector} which initiated the collection.
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* @param collectionTime the HrTime at which the collection was initiated.
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* @param options options for collection.
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* @returns the list of metric data collected.
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*/
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async collect(collector, collectionTime, options) {
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/**
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* 1. Call all observable callbacks first.
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* 2. Collect metric result for the collector.
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*/
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const errors = await this.observableRegistry.observe(collectionTime, options === null || options === void 0 ? void 0 : options.timeoutMillis);
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const storages = this.metricStorageRegistry.getStorages(collector);
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// prevent more allocations if there are no storages.
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if (storages.length === 0) {
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return null;
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}
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const metricDataList = storages
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.map(metricStorage => {
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return metricStorage.collect(collector, collectionTime);
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})
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.filter(isNotNullish);
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// skip this scope if no data was collected (storage created, but no data observed)
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if (metricDataList.length === 0) {
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return { errors };
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}
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return {
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scopeMetrics: {
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scope: this._instrumentationScope,
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metrics: metricDataList,
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},
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errors,
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};
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}
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_registerMetricStorage(descriptor, MetricStorageType) {
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const views = this._meterProviderSharedState.viewRegistry.findViews(descriptor, this._instrumentationScope);
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let storages = views.map(view => {
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const viewDescriptor = createInstrumentDescriptorWithView(view, descriptor);
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const compatibleStorage = this.metricStorageRegistry.findOrUpdateCompatibleStorage(viewDescriptor);
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if (compatibleStorage != null) {
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return compatibleStorage;
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}
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const aggregator = view.aggregation.createAggregator(viewDescriptor);
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const viewStorage = new MetricStorageType(viewDescriptor, aggregator, view.attributesProcessor, this._meterProviderSharedState.metricCollectors, view.aggregationCardinalityLimit);
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this.metricStorageRegistry.register(viewStorage);
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return viewStorage;
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});
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// Fallback to the per-collector aggregations if no view is configured for the instrument.
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if (storages.length === 0) {
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const perCollectorAggregations = this._meterProviderSharedState.selectAggregations(descriptor.type);
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const collectorStorages = perCollectorAggregations.map(([collector, aggregation]) => {
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const compatibleStorage = this.metricStorageRegistry.findOrUpdateCompatibleCollectorStorage(collector, descriptor);
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if (compatibleStorage != null) {
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return compatibleStorage;
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}
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const aggregator = aggregation.createAggregator(descriptor);
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const cardinalityLimit = collector.selectCardinalityLimit(descriptor.type);
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const storage = new MetricStorageType(descriptor, aggregator, AttributesProcessor.Noop(), [collector], cardinalityLimit);
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this.metricStorageRegistry.registerForCollector(collector, storage);
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return storage;
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});
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storages = storages.concat(collectorStorages);
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}
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return storages;
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}
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}
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//# sourceMappingURL=MeterSharedState.js.map
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