/
CollectorMetricExporter.test.ts
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/
CollectorMetricExporter.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 * as protoLoader from '@grpc/proto-loader';
import {
Counter,
ValueObserver,
ValueRecorder,
} from '@opentelemetry/api-metrics';
import { diag } from '@opentelemetry/api';
import { collectorTypes } from '@opentelemetry/exporter-collector';
import * as metrics from '@opentelemetry/metrics';
import * as assert from 'assert';
import * as fs from 'fs';
import * as grpc from '@grpc/grpc-js';
import * as path from 'path';
import * as sinon from 'sinon';
import { CollectorMetricExporter } from '../src';
import {
ensureExportedCounterIsCorrect,
ensureExportedObserverIsCorrect,
ensureExportedValueRecorderIsCorrect,
ensureMetadataIsCorrect,
ensureResourceIsCorrect,
mockCounter,
mockObserver,
mockValueRecorder,
} from './helper';
const metricsServiceProtoPath =
'opentelemetry/proto/collector/metrics/v1/metrics_service.proto';
const includeDirs = [path.resolve(__dirname, '../protos')];
const address = 'localhost:1501';
type TestParams = {
useTLS?: boolean;
metadata?: grpc.Metadata;
};
const metadata = new grpc.Metadata();
metadata.set('k', 'v');
const testCollectorMetricExporter = (params: TestParams) =>
describe(`CollectorMetricExporter - node ${
params.useTLS ? 'with' : 'without'
} TLS, ${params.metadata ? 'with' : 'without'} metadata`, () => {
let collectorExporter: CollectorMetricExporter;
let server: grpc.Server;
let exportedData:
| collectorTypes.opentelemetryProto.metrics.v1.ResourceMetrics[]
| undefined;
let metrics: metrics.MetricRecord[];
let reqMetadata: grpc.Metadata | undefined;
before(done => {
server = new grpc.Server();
protoLoader
.load(metricsServiceProtoPath, {
keepCase: false,
longs: String,
enums: String,
defaults: true,
oneofs: true,
includeDirs,
})
.then((packageDefinition: protoLoader.PackageDefinition) => {
const packageObject: any = grpc.loadPackageDefinition(
packageDefinition
);
server.addService(
packageObject.opentelemetry.proto.collector.metrics.v1
.MetricsService.service,
{
Export: (data: {
request: collectorTypes.opentelemetryProto.collector.metrics.v1.ExportMetricsServiceRequest;
metadata: grpc.Metadata;
}) => {
try {
exportedData = data.request.resourceMetrics;
reqMetadata = data.metadata;
} catch (e) {
exportedData = undefined;
}
},
}
);
const credentials = params.useTLS
? grpc.ServerCredentials.createSsl(
fs.readFileSync('./test/certs/ca.crt'),
[
{
cert_chain: fs.readFileSync('./test/certs/server.crt'),
private_key: fs.readFileSync('./test/certs/server.key'),
},
]
)
: grpc.ServerCredentials.createInsecure();
server.bindAsync(address, credentials, () => {
server.start();
done();
});
});
});
after(() => {
server.forceShutdown();
});
beforeEach(async () => {
const credentials = params.useTLS
? grpc.credentials.createSsl(
fs.readFileSync('./test/certs/ca.crt'),
fs.readFileSync('./test/certs/client.key'),
fs.readFileSync('./test/certs/client.crt')
)
: undefined;
collectorExporter = new CollectorMetricExporter({
url: address,
credentials,
serviceName: 'basic-service',
metadata: params.metadata,
});
// Overwrites the start time to make tests consistent
Object.defineProperty(collectorExporter, '_startTime', {
value: 1592602232694000000,
});
metrics = [];
const counter: metrics.Metric<metrics.BoundCounter> &
Counter = mockCounter();
const observer: metrics.Metric<metrics.BoundObserver> &
ValueObserver = mockObserver(observerResult => {
observerResult.observe(3, {});
observerResult.observe(6, {});
});
const recorder: metrics.Metric<metrics.BoundValueRecorder> &
ValueRecorder = mockValueRecorder();
counter.add(1);
recorder.record(7);
recorder.record(14);
metrics.push((await counter.getMetricRecord())[0]);
metrics.push((await observer.getMetricRecord())[0]);
metrics.push((await recorder.getMetricRecord())[0]);
});
afterEach(() => {
exportedData = undefined;
reqMetadata = undefined;
sinon.restore();
});
describe('instance', () => {
it('should warn about headers', () => {
// Need to stub/spy on the underlying logger as the "diag" instance is global
const spyLoggerWarn = sinon.stub(diag, 'warn');
collectorExporter = new CollectorMetricExporter({
serviceName: 'basic-service',
url: address,
headers: {
foo: 'bar',
},
});
const args = spyLoggerWarn.args[0];
assert.strictEqual(args[0], 'Headers cannot be set when using grpc');
});
it('should warn about path in url', () => {
const spyLoggerWarn = sinon.stub(diag, 'warn');
collectorExporter = new CollectorMetricExporter({
serviceName: 'basic-service',
url: address + '/v1/metrics',
});
const args = spyLoggerWarn.args[0];
assert.strictEqual(args[0], 'URL path cannot be set when using grpc');
});
});
describe('export', () => {
it('should export metrics', done => {
const responseSpy = sinon.spy();
collectorExporter.export(metrics, responseSpy);
setTimeout(() => {
assert.ok(
typeof exportedData !== 'undefined',
'resource' + " doesn't exist"
);
let resource;
if (exportedData) {
resource = exportedData[0].resource;
const counter =
exportedData[0].instrumentationLibraryMetrics[0].metrics[0];
const observer =
exportedData[0].instrumentationLibraryMetrics[0].metrics[1];
const recorder =
exportedData[0].instrumentationLibraryMetrics[0].metrics[2];
ensureExportedCounterIsCorrect(
counter,
counter.intSum?.dataPoints[0].timeUnixNano
);
ensureExportedObserverIsCorrect(
observer,
observer.doubleGauge?.dataPoints[0].timeUnixNano
);
ensureExportedValueRecorderIsCorrect(
recorder,
recorder.intHistogram?.dataPoints[0].timeUnixNano,
[0, 100],
['0', '2', '0']
);
assert.ok(
typeof resource !== 'undefined',
"resource doesn't exist"
);
if (resource) {
ensureResourceIsCorrect(resource);
}
}
if (params.metadata && reqMetadata) {
ensureMetadataIsCorrect(reqMetadata, params.metadata);
}
done();
}, 500);
});
});
});
describe('CollectorMetricExporter - node (getDefaultUrl)', () => {
it('should default to localhost', done => {
const collectorExporter = new CollectorMetricExporter({});
setTimeout(() => {
assert.strictEqual(collectorExporter['url'], 'localhost:4317');
done();
});
});
it('should keep the URL if included', done => {
const url = 'http://foo.bar.com';
const collectorExporter = new CollectorMetricExporter({ url });
setTimeout(() => {
assert.strictEqual(collectorExporter['url'], url);
done();
});
});
});
testCollectorMetricExporter({ useTLS: true });
testCollectorMetricExporter({ useTLS: false });
testCollectorMetricExporter({ metadata });