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Add two AWS sample apps
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‎composer.json‎

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@@ -25,15 +25,17 @@
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"detectors/",
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"exporters/",
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"instrumentation/",
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"propagators/"
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"propagators/",
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"examples/"
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]
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},
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"autoload-dev": {
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"classmap": [
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"detectors/",
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"exporters/",
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"instrumentation/",
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"propagators/"
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"propagators/",
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"examples/"
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]
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},
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"require-dev": {

detectors/Ec2Detector.php renamed to detectors/aws/Ec2Detector.php

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detectors/LambdaDetector.php renamed to detectors/aws/LambdaDetector.php

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‎examples/aws/sampleApp1/SampleApp1.php‎

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<?php
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/*
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* Copyright The OpenTelemetry 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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* https://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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declare(strict_types=1);
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namespace Examples\Aws\SampleApp1;
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require __DIR__ . '/../../../vendor/autoload.php';
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use GuzzleHttp\Client;
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use Instrumentation\Aws\Xray\AwsXrayIdGenerator;
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use OpenTelemetry\Contrib\OtlpGrpc\Exporter as OTLPExporter;
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use OpenTelemetry\Sdk\Trace\PropagationMap;
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use OpenTelemetry\Sdk\Trace\SpanProcessor\SimpleSpanProcessor;
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use OpenTelemetry\Sdk\Trace\TracerProvider;
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use OpenTelemetry\Trace as API;
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use Propagators\Aws\Xray\AwsXrayPropagator;
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// use Aws\S3\S3Client;
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// use Aws\Exception\AwsException;
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/**
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* This is a sample app that makes an http request
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* to aws.amazon.com or a call to AWS s3 buckets
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* It uses the OTEL GRPC Exporter
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* Sends traces to the aws-otel-collector
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* It will generate one trace that has a child span and uses the
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* AWS X-Ray propagator to inject the context into the carrier.
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*/
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/**
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* To use aws-sdk-call:
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* Comment line 110
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* Please downgrade guzzle from "^2.0@RC" to "^1.8.2" in composer.json
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* Then run composer require aws/aws-sdk-php
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* Run composer update to make sure everything is up to date
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* Uncomment lines 32-33, 111-134, 151-165
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*/
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echo 'Starting Sample App' . PHP_EOL;
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// Prompts the user to choose which type of request to make
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echo 'Which call would you like to make? ' . PHP_EOL;
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echo 'Type outgoing-http-call or aws-sdk-call' . PHP_EOL;
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$handle = fopen('php://stdin', 'r');
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$line = trim(fgets($handle));
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if ($line !== 'outgoing-http-call' && $line !== 'aws-sdk-call') {
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echo "ABORTING!\n";
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exit;
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}
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fclose($handle);
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// Create an exporter for exporting traces
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// Create a client for making http requests
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$Exporter = new OTLPExporter();
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$client = new Client();
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// Create a tracer object that uses the AWS X-Ray ID Generator to
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// generate trace Ids in the correct format
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$tracer = (new TracerProvider(null, null, new AwsXrayIdGenerator()))
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->addSpanProcessor(new SimpleSpanProcessor($Exporter))
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->getTracer('io.opentelemetry.contrib.php');
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// Create a span with the tracer
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$span = $tracer->startAndActivateSpan('session.generate.span.' . microtime(true));
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// Add some dummy attributes to the parent span (also the root span)
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$span->setAttribute('item_A', 'cars')
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->setAttribute('item_B', 'motorcycles')
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->setAttribute('item_C', 'planes');
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// Create a carrier and map to inject the context of the child span into the carrier
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$carrier = [];
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$map = new PropagationMap();
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if ($line === 'outgoing-http-call') {
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// Create a child span for http call
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// Make an HTTP request to take some time up
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// Carrier is injected into the header to simulate a microservice needing the carrier
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$childSpan = $tracer->startAndActivateSpan('session.generate.http.span.' . microtime(true), API\SpanKind::KIND_CLIENT);
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AwsXrayPropagator::inject($childSpan->getContext(), $carrier, $map);
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try {
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$res = $client->request('GET', 'https://aws.amazon.com', ['headers' => $carrier, 'timeout' => 2000,]);
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} catch (\Throwable $e) {
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echo $e->getMessage() . PHP_EOL;
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return null;
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}
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// Format and output the trace Id of the childspan
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getTraceId($childSpan);
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$childSpan->end();
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} else {
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echo 'The desired function is currently unavailable';
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// // Create a child span for sdk call
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// $childSpan = $tracer->startAndActivateSpan('session.generate.aws.sdk.span.' . microtime(true), API\SpanKind::KIND_CLIENT);
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// AwsXrayPropagator::inject($childSpan->getContext(), $carrier, $map);
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// // Make a call to aws s3 buckets
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// $s3Client = new S3Client([
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// 'profile' => 'default',
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// 'region' => 'us-west-2',
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// 'version' => '2006-03-01'
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// ]);
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// // To create a new bucket uncomment this line
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// // createBucket($s3Client, 'testBucket');
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// $buckets = $s3Client->listBuckets();
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// foreach ($buckets['Buckets'] as $bucket) {
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// echo $bucket['Name'] . "\n";
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// }
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// // Format and output the trace Id of the childspan
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// getTraceId($childSpan);
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// $childSpan->end();
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}
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// End both the root span to be able to export the trace
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$span->end();
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echo PHP_EOL . 'Sample App complete!';
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echo PHP_EOL;
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// Get a traceId from a span and prints it
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function getTraceId($span)
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{
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$traceId = $span->getContext()->getTraceId();
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$xrayTraceId = '1-' . substr($traceId, 0, 8) . '-' . substr($traceId, 8);
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echo 'Final trace ID: ' . json_encode(['traceId' => $xrayTraceId]);
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}
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// // Function for creating s3 buckets
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// function createBucket($s3Client, $bucketName)
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// {
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// try {
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// $result = $s3Client->createBucket([
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// 'Bucket' => $bucketName,
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// ]);
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// return 'The bucket\'s location is: ' .
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// $result['Location'] . '. ' .
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// 'The bucket\'s effective URI is: ' .
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// $result['@metadata']['effectiveUri'];
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// } catch (AwsException $e) {
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// return 'Error: ' . $e->getAwsErrorMessage();
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// }
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// }

‎examples/aws/sampleApp2/SampleApp2.php‎

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<?php
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/*
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* Copyright The OpenTelemetry 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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* https://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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declare(strict_types=1);
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namespace Examples\Aws\SampleApp2;
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require __DIR__ . '/../../../vendor/autoload.php';
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use Instrumentation\Aws\Xray\AwsXrayIdGenerator;
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use OpenTelemetry\Contrib\OtlpGrpc\Exporter as OTLPExporter;
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use OpenTelemetry\Sdk\Trace\PropagationMap;
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use OpenTelemetry\Sdk\Trace\SpanProcessor\SimpleSpanProcessor;
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use OpenTelemetry\Sdk\Trace\TracerProvider;
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use Propagators\Aws\Xray\AwsXrayPropagator;
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/**
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* This is a sample app that makes an http request to aws.amazon.com
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* It uses the OTEL GRPC Exporter
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* Sends traces to the aws-otel-collector
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* It will generate one trace that has a two child spans and uses the
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* AWS X-Ray propagator to inject the context into the carrier.
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*/
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echo 'Starting Sample App' . PHP_EOL;
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// Initialize an exporter for exporting traces
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// Initialize a map and carrier to use for propagation injection and extraction
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$Exporter = new OTLPExporter();
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$map = new PropagationMap();
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$carrier = [];
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// Create a tracer object that uses the AWS X-Ray ID Generator to
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// generate trace IDs in the correct format
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$tracer = (new TracerProvider(null, null, new AwsXrayIdGenerator()))
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->addSpanProcessor(new SimpleSpanProcessor($Exporter))
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->getTracer('io.opentelemetry.contrib.php');
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// Create a span (also the root span) with the tracer
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$span = $tracer->startAndActivateSpan('session.generate.span.' . microtime(true));
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// Add some dummy attributes to the parent span
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$span->setAttribute('item_A', 'cars')
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->setAttribute('item_B', 'motorcycles')
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->setAttribute('item_C', 'planes');
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// Inject the context of the child span into the carrier to pass to the first service1
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// The tracer is passed to each service for convinience of not creating another tracer
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// in the service.
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// TODO: The next step for testing propagation would be to create two separate
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// web application, each making a request from a client front end.
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AwsXrayPropagator::inject($span->getContext(), $carrier, $map);
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$service1 = new Service1($carrier);
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$childSpanContext = $service1->useService();
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// Inject the context of the child span into the carrier to pass to the first service2
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AwsXrayPropagator::inject($childSpanContext, $carrier, $map);
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$service2 = new Service2($carrier);
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$childSpanContext2 = $service2->useService();
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// Format and output the trace ID of the a child span
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$traceId = $childSpanContext2->getTraceId();
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$xrayTraceId = '1-' . substr($traceId, 0, 8) . '-' . substr($traceId, 8);
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echo 'Child span trace ID after service 2: ' . json_encode(['traceId' => $xrayTraceId]);
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// End the parent span
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$span->end();
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echo PHP_EOL . 'Sample App complete!';
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echo PHP_EOL;

‎examples/aws/sampleApp2/Service1.php‎

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<?php
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/*
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* Copyright The OpenTelemetry 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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* https://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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declare(strict_types=1);
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namespace Examples\Aws\SampleApp2;
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require __DIR__ . '/../../../vendor/autoload.php';
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use Instrumentation\Aws\Xray\AwsXrayIdGenerator;
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use OpenTelemetry\Contrib\OtlpGrpc\Exporter as OTLPExporter;
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use OpenTelemetry\Sdk\Trace\PropagationMap;
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use OpenTelemetry\Sdk\Trace\SpanProcessor\SimpleSpanProcessor;
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use OpenTelemetry\Sdk\Trace\TracerProvider;
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use OpenTelemetry\Trace as API;
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use Propagators\Aws\Xray\AwsXrayPropagator;
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class Service1
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{
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private const LIMIT = 100;
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private $tracer;
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private $carrier;
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public function __construct(array $carrier)
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{
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$this->carrier = $carrier;
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}
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public function useService()
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{
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$Exporter = new OTLPExporter();
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$map = new PropagationMap();
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// Create a tracer object that uses the AWS X-Ray ID Generator to
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// generate trace IDs in the correct format
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$tracer = (new TracerProvider(null, null, new AwsXrayIdGenerator()))
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->addSpanProcessor(new SimpleSpanProcessor($Exporter))
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->getTracer('io.opentelemetry.contrib.php');
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// Extract the SpanContext from the carrier
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$spanContext = AwsXrayPropagator::extract($this->carrier, $map);
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// Do some kind of operation
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$i = 0;
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while ($i < self::LIMIT) {
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$i++;
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}
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// Create a child span
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$childSpan = $tracer->startActiveSpan('session.second.child.span' . microtime(true), $spanContext, false, API\SpanKind::KIND_CLIENT);
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// Set some dummy attributes
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$childSpan->setAttribute('service_2', 'microservice')
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->setAttribute('action_item', (string) $i);
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// End child span
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$childSpan->end();
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return $childSpan->getContext();
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}
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}

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