/
BatchSpanProcessorBase.test.ts
430 lines (363 loc) · 14.3 KB
/
BatchSpanProcessorBase.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 { diag } from '@opentelemetry/api';
import {
AlwaysOffSampler,
AlwaysOnSampler,
ExportResultCode,
loggingErrorHandler,
setGlobalErrorHandler,
} from '@opentelemetry/core';
import * as assert from 'assert';
import * as sinon from 'sinon';
import { BasicTracerProvider, BufferConfig, InMemorySpanExporter, Span } from '../../../src';
import { context } from '@opentelemetry/api';
import { TestTracingSpanExporter } from './TestTracingSpanExporter';
import { TestStackContextManager } from './TestStackContextManager';
import { BatchSpanProcessorBase } from '../../../src/export/BatchSpanProcessorBase';
function createSampledSpan(spanName: string): Span {
const tracer = new BasicTracerProvider({
sampler: new AlwaysOnSampler(),
}).getTracer('default');
const span = tracer.startSpan(spanName);
span.end();
return span as Span;
}
function createUnsampledSpan(spanName: string): Span {
const tracer = new BasicTracerProvider({
sampler: new AlwaysOffSampler(),
}).getTracer('default');
const span = tracer.startSpan(spanName);
span.end();
return span as Span;
}
class BatchSpanProcessor extends BatchSpanProcessorBase<BufferConfig> {
onInit() {}
onShutdown() {}
}
describe('BatchSpanProcessorBase', () => {
const name = 'span-name';
const defaultBufferConfig = {
maxExportBatchSize: 5,
scheduledDelayMillis: 2500,
};
let exporter: InMemorySpanExporter;
beforeEach(() => {
exporter = new InMemorySpanExporter();
});
afterEach(() => {
exporter.reset();
sinon.restore();
});
describe('constructor', () => {
it('should create a BatchSpanProcessor instance', () => {
const processor = new BatchSpanProcessor(exporter);
assert.ok(processor instanceof BatchSpanProcessor);
processor.shutdown();
});
it('should create a BatchSpanProcessor instance with config', () => {
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
assert.ok(processor instanceof BatchSpanProcessor);
processor.shutdown();
});
it('should create a BatchSpanProcessor instance with empty config', () => {
const processor = new BatchSpanProcessor(exporter, {});
assert.ok(processor instanceof BatchSpanProcessor);
processor.shutdown();
});
it('should read defaults from environment', () => {
const bspConfig = {
OTEL_BSP_MAX_EXPORT_BATCH_SIZE: 256,
OTEL_BSP_SCHEDULE_DELAY: 2500,
};
let env: Record<string, any>;
if (typeof process === 'undefined') {
env = (window as unknown) as Record<string, any>;
} else {
env = process.env as Record<string, any>;
}
Object.entries(bspConfig).forEach(([k, v]) => {
env[k] = v;
});
const processor = new BatchSpanProcessor(exporter);
assert.ok(processor instanceof BatchSpanProcessor);
assert.strictEqual(processor['_maxExportBatchSize'], 256);
assert.strictEqual(processor['_scheduledDelayMillis'], 2500);
processor.shutdown();
Object.keys(bspConfig).forEach(k => delete env[k]);
});
});
describe('.onStart/.onEnd/.shutdown', () => {
it('should call onShutdown', async () => {
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
const onShutdownSpy = sinon.stub(processor, 'onShutdown');
assert.strictEqual(onShutdownSpy.callCount, 0);
await processor.shutdown();
assert.strictEqual(onShutdownSpy.callCount, 1);
});
it('should do nothing after processor is shutdown', async () => {
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
const spy: sinon.SinonSpy = sinon.spy(exporter, 'export') as any;
const span = createSampledSpan(`${name}_0`);
processor.onEnd(span);
assert.strictEqual(processor['_finishedSpans'].length, 1);
await processor.forceFlush();
assert.strictEqual(exporter.getFinishedSpans().length, 1);
processor.onEnd(span);
assert.strictEqual(processor['_finishedSpans'].length, 1);
assert.strictEqual(spy.args.length, 1);
await processor.shutdown();
assert.strictEqual(spy.args.length, 2);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
processor.onEnd(span);
assert.strictEqual(spy.args.length, 2);
assert.strictEqual(processor['_finishedSpans'].length, 0);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
});
it('should not export unsampled spans', async () => {
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
const spy: sinon.SinonSpy = sinon.spy(exporter, 'export') as any;
const span = createUnsampledSpan(`${name}_0`);
processor.onEnd(span);
await processor.forceFlush();
assert.strictEqual(processor['_finishedSpans'].length, 0);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
assert.strictEqual(spy.args.length, 0);
});
it('should export the sampled spans with buffer size reached', done => {
const clock = sinon.useFakeTimers();
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
for (let i = 0; i < defaultBufferConfig.maxExportBatchSize; i++) {
const span = createSampledSpan(`${name}_${i}`);
processor.onStart(span);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
processor.onEnd(span);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
}
const span = createSampledSpan(`${name}_6`);
processor.onEnd(span);
setTimeout(async () => {
assert.strictEqual(exporter.getFinishedSpans().length, 5);
await processor.shutdown();
assert.strictEqual(exporter.getFinishedSpans().length, 0);
done();
}, defaultBufferConfig.scheduledDelayMillis + 1000);
clock.tick(defaultBufferConfig.scheduledDelayMillis + 1000);
clock.restore();
});
it('should force flush when timeout exceeded', done => {
const clock = sinon.useFakeTimers();
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
for (let i = 0; i < defaultBufferConfig.maxExportBatchSize; i++) {
const span = createSampledSpan(`${name}_${i}`);
processor.onEnd(span);
assert.strictEqual(exporter.getFinishedSpans().length, 0);
}
setTimeout(() => {
assert.strictEqual(exporter.getFinishedSpans().length, 5);
done();
}, defaultBufferConfig.scheduledDelayMillis + 1000);
clock.tick(defaultBufferConfig.scheduledDelayMillis + 1000);
clock.restore();
});
it('should force flush on demand', () => {
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
for (let i = 0; i < defaultBufferConfig.maxExportBatchSize; i++) {
const span = createSampledSpan(`${name}_${i}`);
processor.onEnd(span);
}
assert.strictEqual(exporter.getFinishedSpans().length, 0);
processor.forceFlush();
assert.strictEqual(exporter.getFinishedSpans().length, 5);
});
it('should not export empty span lists', done => {
const spy = sinon.spy(exporter, 'export');
const clock = sinon.useFakeTimers();
const tracer = new BasicTracerProvider({
sampler: new AlwaysOnSampler(),
}).getTracer('default');
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
// start but do not end spans
for (let i = 0; i < defaultBufferConfig.maxExportBatchSize; i++) {
const span = tracer.startSpan('spanName');
processor.onStart(span as Span);
}
setTimeout(() => {
assert.strictEqual(exporter.getFinishedSpans().length, 0);
// after the timeout, export should not have been called
// because no spans are ended
sinon.assert.notCalled(spy);
done();
}, defaultBufferConfig.scheduledDelayMillis + 1000);
// no spans have been finished
assert.strictEqual(exporter.getFinishedSpans().length, 0);
clock.tick(defaultBufferConfig.scheduledDelayMillis + 1000);
clock.restore();
});
it(
'should export each sampled span exactly once with buffer size' +
' reached multiple times',
done => {
const originalTimeout = setTimeout;
const clock = sinon.useFakeTimers();
const processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
const totalSpans = defaultBufferConfig.maxExportBatchSize * 2;
for (let i = 0; i < totalSpans; i++) {
const span = createSampledSpan(`${name}_${i}`);
processor.onEnd(span);
}
const span = createSampledSpan(`${name}_last`);
processor.onEnd(span);
clock.tick(defaultBufferConfig.scheduledDelayMillis + 10);
// because there is an async promise that will be trigger original
// timeout is needed to simulate a real tick to the next
originalTimeout(() => {
clock.tick(defaultBufferConfig.scheduledDelayMillis + 10);
originalTimeout(async () => {
clock.tick(defaultBufferConfig.scheduledDelayMillis + 10);
clock.restore();
diag.info(
'finished spans count',
exporter.getFinishedSpans().length
);
assert.strictEqual(
exporter.getFinishedSpans().length,
totalSpans + 1
);
await processor.shutdown();
assert.strictEqual(exporter.getFinishedSpans().length, 0);
done();
});
});
}
);
});
describe('force flush', () => {
describe('no waiting spans', () => {
it('should call an async callback when flushing is complete', done => {
const processor = new BatchSpanProcessor(exporter);
processor.forceFlush().then(() => {
done();
});
});
it('should call an async callback when shutdown is complete', done => {
const processor = new BatchSpanProcessor(exporter);
processor.shutdown().then(() => {
done();
});
});
});
describe('spans waiting to flush', () => {
let processor: BatchSpanProcessor;
beforeEach(() => {
processor = new BatchSpanProcessor(exporter, defaultBufferConfig);
});
it('should call an async callback when flushing is complete', done => {
const span = createSampledSpan('test');
processor.onStart(span);
processor.onEnd(span);
processor.forceFlush().then(() => {
assert.strictEqual(exporter.getFinishedSpans().length, 1);
done();
});
});
it('should call an async callback when shutdown is complete', done => {
let exportedSpans = 0;
sinon.stub(exporter, 'export').callsFake((spans, callback) => {
setTimeout(() => {
exportedSpans = exportedSpans + spans.length;
callback({ code: ExportResultCode.SUCCESS });
}, 0);
});
const span = createSampledSpan('test');
processor.onStart(span);
processor.onEnd(span);
processor.shutdown().then(() => {
assert.strictEqual(exportedSpans, 1);
done();
});
});
it('should call globalErrorHandler when exporting fails', done => {
const clock = sinon.useFakeTimers();
const expectedError = new Error('Exporter failed');
sinon.stub(exporter, 'export').callsFake((_, callback) => {
setTimeout(() => {
callback({ code: ExportResultCode.FAILED, error: expectedError });
}, 0);
});
const errorHandlerSpy = sinon.spy();
setGlobalErrorHandler(errorHandlerSpy);
for (let i = 0; i < defaultBufferConfig.maxExportBatchSize; i++) {
const span = createSampledSpan('test');
processor.onStart(span);
processor.onEnd(span);
}
clock.tick(defaultBufferConfig.scheduledDelayMillis + 1000);
clock.restore();
setTimeout(async () => {
assert.strictEqual(errorHandlerSpy.callCount, 1);
const [[error]] = errorHandlerSpy.args;
assert.deepStrictEqual(error, expectedError);
//reset global error handler
setGlobalErrorHandler(loggingErrorHandler());
done();
});
});
});
describe('flushing spans with exporter triggering instrumentation', () => {
beforeEach(() => {
const contextManager = new TestStackContextManager().enable();
context.setGlobalContextManager(contextManager);
});
afterEach(() => {
context.disable();
});
it('should prevent instrumentation prior to export', done => {
const testTracingExporter = new TestTracingSpanExporter();
const processor = new BatchSpanProcessor(testTracingExporter);
const span = createSampledSpan('test');
processor.onStart(span);
processor.onEnd(span);
processor.forceFlush().then(() => {
const exporterCreatedSpans = testTracingExporter.getExporterCreatedSpans();
assert.equal(exporterCreatedSpans.length, 0);
done();
});
});
});
});
describe('maxQueueSize', () => {
let processor: BatchSpanProcessor;
describe('when there are more spans then "maxQueueSize"', () => {
beforeEach(() => {
processor = new BatchSpanProcessor(
exporter,
Object.assign({}, defaultBufferConfig, {
maxQueueSize: 6,
})
);
});
it('should drop spans', () => {
const span = createSampledSpan('test');
for (let i = 0, j = 20; i < j; i++) {
processor.onStart(span);
processor.onEnd(span);
}
assert.equal(processor['_finishedSpans'].length, 6);
});
});
});
});