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Add integration test (#3)
* Add an integration test that reports to a dockerized Jaeger instance * license header * Fix test namespace * Remove unused import
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‎Dockerfile.integration‎

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# Copyright 2018 OpenCensus 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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# http://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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FROM gcr.io/google-appengine/php72
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COPY . $APP_DIR
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RUN composer install
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ENTRYPOINT []

‎cloudbuild.yaml‎

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args: ['build', '--build-arg', 'BASE_IMAGE=gcr.io/php-stackdriver/php71-debug', '.']
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waitFor: ['-']
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id: php71-debug
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# integration test
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- name: gcr.io/cloud-builders/docker
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args: ['network', 'create', '-d', 'bridge', 'nw_jaeger']
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id: test-network
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waitFor: ['-']
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- name: gcr.io/cloud-builders/docker
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args:
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- 'run'
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- '-d'
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- '-e'
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- '-p6831:6831/udp'
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- '-p16686:16686'
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- '--name=jaeger-server'
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- '--network=nw_jaeger'
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- 'jaegertracing/all-in-one:latest'
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id: jaeger-server
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waitFor: ['test-network']
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- name: gcr.io/cloud-builders/docker
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args: ['build', '-t', 'gcr.io/$PROJECT_ID/test-runner', '-f', 'Dockerfile.integration', '.']
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id: test-build
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waitFor: ['test-network']
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- name: gcr.io/cloud-builders/docker
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args: ['run', '--network=nw_jaeger', '-e', 'JAEGER_HOST=jaeger-server', 'gcr.io/$PROJECT_ID/test-runner', 'vendor/bin/phpunit', '--config=./phpunit-integration.xml.dist']
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id: test-run
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waitFor: ['test-build', 'jaeger-server']

‎composer.json‎

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},
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"require-dev": {
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"phpunit/phpunit": "^6.0",
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"squizlabs/php_codesniffer": "2.*"
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"squizlabs/php_codesniffer": "2.*",
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"guzzlehttp/guzzle": "~6.0"
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},
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"license": "Apache-2.0",
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"authors": [

‎phpunit-integration.xml.dist‎

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<?xml version="1.0" encoding="UTF-8"?>
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<phpunit bootstrap="./tests/integration/bootstrap.php" colors="true">
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<testsuites>
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<testsuite>
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<directory>tests/integration</directory>
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</testsuite>
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</testsuites>
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<filter>
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<whitelist>
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<directory suffix=".php">src</directory>
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</whitelist>
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</filter>
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</phpunit>

‎tests/integration/JaegerExporterTest.php‎

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<?php
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/**
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* Copyright 2018 OpenCensus 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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* http://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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namespace OpenCensus\Tests\Integration\Trace\Exporter;
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use GuzzleHttp\Client;
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use PHPUnit\Framework\TestCase;
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class JaegerExporterTest extends TestCase
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{
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private static $jaegerClient;
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public static function setUpBeforeClass()
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{
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parent::setUpBeforeClass();
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$jaegerHost = getenv('JAEGER_HOST') ?: 'localhost';
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$jaegerPort = (int)(getenv('JAEGER_PORT') ?: 16686);
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self::$jaegerClient = new Client([
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'base_uri' => sprintf('http://%s:%d/', $jaegerHost, $jaegerPort)
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]);
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}
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public function testReportsTraceToJaeger()
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{
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$rand = mt_rand();
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$client = new Client(['base_uri' => 'http://localhost:9000']);
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$response = $client->request('GET', '/', [
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'query' => [
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'rand' => $rand
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]
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]);
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$this->assertEquals(200, $response->getStatusCode());
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$this->assertEquals('Hello world!', $response->getBody()->getContents());
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$response = $this->findTraces($rand);
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$this->assertEquals(200, $response->getStatusCode());
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$data = json_decode($response->getBody()->getContents(), true);
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$this->assertCount(1, $data['data']);
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$trace = $data['data'][0];
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$this->assertCount(2, $trace['spans']);
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}
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public function testCanReachJaegerServer()
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{
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$response = self::$jaegerClient->request('GET', '/search');
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$this->assertEquals(200, $response->getStatusCode());
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}
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private function findTraces($rand)
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{
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return self::$jaegerClient->request('GET', '/api/traces', [
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'query' => [
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'service' => 'integration-test',
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'operation' => "/?rand=$rand",
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'limit' => 20,
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'lookback' => '1h'
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]
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]);
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}
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}

‎tests/integration/bootstrap.php‎

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<?php
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/**
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* Copyright 2018 OpenCensusAuthors
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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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* http://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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/**
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* This PHPUnit bootstrap file starts a local web server using the built-in
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* PHP web server. The PHPUnit tests that run then hit this running server.
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* We also register a shutdown function to stop this server after tests have
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* run.
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*/
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require __DIR__ . '/../../vendor/autoload.php';
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$host = getenv('TESTHOST') ?: 'localhost';
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$port = (int)(getenv('TESTPORT') ?: 9000);
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putenv(
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sprintf(
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'TESTURL=http://%s:%d',
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$host,
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$port
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)
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);
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$command = sprintf(
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'php -S %s:%d -t %s >/dev/null 2>&1 & echo $!',
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$host,
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$port,
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__DIR__ . '/web'
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);
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$output = [];
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printf('Starting web server with command: %s' . PHP_EOL, $command);
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exec($command, $output);
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$pid = (int) $output[0];
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printf(
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'%s - Web server started on %s:%d with PID %d',
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date('r'),
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$host,
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$port,
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$pid
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);
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// Give the server time to boot.
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sleep(1);
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// Kill the web server when the process ends
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register_shutdown_function(function() use ($pid) {
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echo sprintf('%s - Killing process with ID %d', date('r'), $pid) . PHP_EOL;
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exec('kill ' . $pid);
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});

‎tests/integration/web/index.php‎

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<?php
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/**
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* Copyright 2018 OpenCensus 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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* http://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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require_once __DIR__ . '/../../../vendor/autoload.php';
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use OpenCensus\Trace\Exporter\JaegerExporter;
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use OpenCensus\Trace\Tracer;
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$host = getenv('JAEGER_HOST') ?: 'localhost';
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$exporter = new JaegerExporter('integration-test', [
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'host' => $host,
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'tags' => [
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'asdf' => 'qwer'
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]
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]);
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Tracer::start($exporter, [
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'attributes' => [
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'foo' => 'bar'
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]
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]);
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Tracer::inSpan(
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['name' => 'slow_function'],
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function () {
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usleep(50);
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}
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);
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echo 'Hello world!';

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