forked from open-telemetry/opentelemetry-js
/
CollectorExporterNodeBase.test.ts
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/
CollectorExporterNodeBase.test.ts
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/*
* 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 { collectorTypes } from '@opentelemetry/exporter-collector';
import { ReadableSpan } from '@opentelemetry/tracing';
import * as assert from 'assert';
import { CollectorExporterNodeBase } from '../src/CollectorExporterNodeBase';
import { CollectorExporterConfigNode, ServiceClientType } from '../src/types';
import { mockedReadableSpan } from './helper';
class MockCollectorExporter extends CollectorExporterNodeBase<
ReadableSpan,
ReadableSpan[]
> {
/**
* Callbacks passed to _send()
*/
sendCallbacks: {
onSuccess: () => void;
onError: (error: collectorTypes.CollectorExporterError) => void;
}[] = [];
getDefaultUrl(config: CollectorExporterConfigNode): string {
return '';
}
getDefaultServiceName(config: CollectorExporterConfigNode): string {
return '';
}
convert(spans: ReadableSpan[]): ReadableSpan[] {
return spans;
}
getServiceClientType() {
return ServiceClientType.SPANS;
}
getServiceProtoPath(): string {
return 'opentelemetry/proto/collector/trace/v1/trace_service.proto';
}
}
// Mocked _send which just saves the callbacks for later
MockCollectorExporter.prototype['_send'] = function _sendMock(
self: MockCollectorExporter,
objects: ReadableSpan[],
onSuccess: () => void,
onError: (error: collectorTypes.CollectorExporterError) => void
): void {
self.sendCallbacks.push({ onSuccess, onError });
};
describe('CollectorExporterNodeBase', () => {
let exporter: MockCollectorExporter;
const concurrencyLimit = 5;
beforeEach(done => {
exporter = new MockCollectorExporter({ concurrencyLimit });
done();
});
describe('export', () => {
it('should export requests concurrently', async () => {
const spans = [Object.assign({}, mockedReadableSpan)];
const numToExport = concurrencyLimit;
for (let i = 0; i < numToExport; ++i) {
exporter.export(spans, () => {});
}
assert.strictEqual(exporter['_sendingPromises'].length, numToExport);
const promisesAllDone = Promise.all(exporter['_sendingPromises']);
// Mock that all requests finish sending
exporter.sendCallbacks.forEach(({ onSuccess }) => onSuccess());
// All finished promises should be dropped off
await promisesAllDone;
assert.strictEqual(exporter['_sendingPromises'].length, 0);
});
it('should drop export requests when already sending concurrencyLimit', async () => {
const spans = [Object.assign({}, mockedReadableSpan)];
const numToExport = concurrencyLimit + 5;
for (let i = 0; i < numToExport; ++i) {
exporter.export(spans, () => {});
}
assert.strictEqual(exporter['_sendingPromises'].length, concurrencyLimit);
const promisesAllDone = Promise.all(exporter['_sendingPromises']);
// Mock that all requests finish sending
exporter.sendCallbacks.forEach(({ onSuccess }) => onSuccess());
// All finished promises should be dropped off
await promisesAllDone;
assert.strictEqual(exporter['_sendingPromises'].length, 0);
});
it('should drop export requests even if they failed', async () => {
const spans = [Object.assign({}, mockedReadableSpan)];
exporter.export(spans, () => {});
assert.strictEqual(exporter['_sendingPromises'].length, 1);
const promisesAllDone = Promise.all(exporter['_sendingPromises']);
// Mock that all requests fail sending
exporter.sendCallbacks.forEach(({ onError }) =>
onError(new Error('Failed to send!!'))
);
// All finished promises should be dropped off
await promisesAllDone;
assert.strictEqual(exporter['_sendingPromises'].length, 0);
});
it('should drop export requests even if success callback throws error', async () => {
const spans = [Object.assign({}, mockedReadableSpan)];
exporter['_sendPromise'](
spans,
() => {
throw new Error('Oops');
},
() => {}
);
assert.strictEqual(exporter['_sendingPromises'].length, 1);
const promisesAllDone = Promise.all(exporter['_sendingPromises']);
// Mock that the request finishes sending
exporter.sendCallbacks.forEach(({ onSuccess }) => {
onSuccess();
});
// All finished promises should be dropped off
await promisesAllDone;
assert.strictEqual(exporter['_sendingPromises'].length, 0);
});
});
});