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89 changes: 89 additions & 0 deletions
89
experimental/packages/opentelemetry-sdk-metrics-base/src/state/MeterSharedState.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| /* | ||
| * 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 { HrTime } from '@opentelemetry/api'; | ||
| import * as metrics from '@opentelemetry/api-metrics'; | ||
| import { InstrumentationLibrary } from '@opentelemetry/core'; | ||
| import { InstrumentationLibraryMetrics } from '../export/MetricData'; | ||
| import { createInstrumentDescriptorWithView, InstrumentDescriptor } from '../InstrumentDescriptor'; | ||
| import { isNotNullish } from '../utils'; | ||
| import { AsyncMetricStorage } from './AsyncMetricStorage'; | ||
| import { MeterProviderSharedState } from './MeterProviderSharedState'; | ||
| import { MetricCollectorHandle } from './MetricCollector'; | ||
| import { MetricStorageRegistry } from './MetricStorageRegistry'; | ||
| import { MultiMetricStorage } from './MultiWritableMetricStorage'; | ||
| import { SyncMetricStorage } from './SyncMetricStorage'; | ||
|
|
||
| /** | ||
| * An internal record for shared meter provider states. | ||
| */ | ||
| export class MeterSharedState { | ||
| private _metricStorageRegistry = new MetricStorageRegistry(); | ||
|
|
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| constructor(private _meterProviderSharedState: MeterProviderSharedState, private _instrumentationLibrary: InstrumentationLibrary) {} | ||
|
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| registerMetricStorage(descriptor: InstrumentDescriptor) { | ||
| const views = this._meterProviderSharedState.viewRegistry.findViews(descriptor, this._instrumentationLibrary); | ||
| const storages = views | ||
| .map(view => { | ||
| const viewDescriptor = createInstrumentDescriptorWithView(view, descriptor); | ||
| const aggregator = view.aggregation.createAggregator(viewDescriptor); | ||
| const storage = new SyncMetricStorage(viewDescriptor, aggregator, view.attributesProcessor); | ||
| return this._metricStorageRegistry.register(storage); | ||
| }) | ||
| .filter(isNotNullish); | ||
| if (storages.length === 1) { | ||
| return storages[0]; | ||
| } | ||
| return new MultiMetricStorage(storages); | ||
| } | ||
|
|
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| registerAsyncMetricStorage(descriptor: InstrumentDescriptor, callback: metrics.ObservableCallback) { | ||
| const views = this._meterProviderSharedState.viewRegistry.findViews(descriptor, this._instrumentationLibrary); | ||
| views.forEach(view => { | ||
| const viewDescriptor = createInstrumentDescriptorWithView(view, descriptor); | ||
| const aggregator = view.aggregation.createAggregator(viewDescriptor); | ||
| const viewStorage = new AsyncMetricStorage(viewDescriptor, aggregator, view.attributesProcessor, callback); | ||
| this._metricStorageRegistry.register(viewStorage); | ||
| }); | ||
| } | ||
|
|
||
| /** | ||
| * @param collector opaque handle of {@link MetricCollector} which initiated the collection. | ||
| * @param collectionTime the HrTime at which the collection was initiated. | ||
| * @returns the list of {@link MetricData} collected. | ||
| */ | ||
| async collect(collector: MetricCollectorHandle, collectionTime: HrTime): Promise<InstrumentationLibraryMetrics> { | ||
| /** | ||
| * 1. Call all observable callbacks first. | ||
| * 2. Collect metric result for the collector. | ||
| */ | ||
| const metricDataList = await Promise.all(Array.from(this._metricStorageRegistry.getStorages()) | ||
| .map(metricStorage => { | ||
| return metricStorage.collect( | ||
| collector, | ||
| this._meterProviderSharedState.metricCollectors, | ||
| this._meterProviderSharedState.sdkStartTime, | ||
| collectionTime); | ||
| }) | ||
| .filter(isNotNullish)); | ||
|
|
||
| return { | ||
| instrumentationLibrary: this._instrumentationLibrary, | ||
| metrics: metricDataList.filter(isNotNullish), | ||
| }; | ||
| } | ||
| } |
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39 changes: 39 additions & 0 deletions
39
experimental/packages/opentelemetry-sdk-metrics-base/test/export/TestMetricExporter.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| /* | ||
| * 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 { ExportResult, ExportResultCode } from '@opentelemetry/core'; | ||
| import { AggregationTemporality, PushMetricExporter, ResourceMetrics } from '../../src'; | ||
|
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| export class TestMetricExporter implements PushMetricExporter { | ||
| resourceMetricsList: ResourceMetrics[] = []; | ||
| export(resourceMetrics: ResourceMetrics, resultCallback: (result: ExportResult) => void): void { | ||
| this.resourceMetricsList.push(resourceMetrics); | ||
| process.nextTick(() => resultCallback({ code: ExportResultCode.SUCCESS })); | ||
| } | ||
|
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| async forceFlush(): Promise<void> {} | ||
| async shutdown(): Promise<void> {} | ||
|
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| getPreferredAggregationTemporality(): AggregationTemporality { | ||
| return AggregationTemporality.CUMULATIVE; | ||
| } | ||
| } | ||
|
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| export class TestDeltaMetricExporter extends TestMetricExporter { | ||
| override getPreferredAggregationTemporality(): AggregationTemporality { | ||
| return AggregationTemporality.DELTA; | ||
| } | ||
| } |
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