https://github.com/opentelemetry-php/context-swoole

[READONLY] Swoole context
https://github.com/opentelemetry-php/context-swoole

Last synced: about 1 month ago
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[READONLY] Swoole context

• Host: GitHub
• URL: https://github.com/opentelemetry-php/context-swoole
• Owner: opentelemetry-php
• Created: 2022-11-29T03:41:17.000Z (about 2 years ago)
• Default Branch: main
• Last Pushed: 2024-09-17T09:27:22.000Z (4 months ago)
• Last Synced: 2024-11-15T22:40:31.515Z (about 2 months ago)
• Language: PHP
• Size: 16.6 KB
• Stars: 3
• Watchers: 4
• Forks: 4
• Open Issues: 0
• Metadata Files:
  • Readme: README-zh_CN.md

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# OpenTelemetry Swoole context

[简体中文](README-zh_CN.md) | [ENGLISH](README.md)

不同于传统的 php-fpm 运行时单个进程同一时刻只处理一个请求，在 Swoole 中每个进程同时会处理多个 http 请求，这个库解决在 Swoole 中使用 Opentelemetry 的上下文切换问题。

## Requirement

* php >= 8.0

* swoole >= 4.5

## 安装

Install the package with composer:

```bash

composer require open-telemetry/context-swoole

```

请注意，该库需要与 OpenTelemetry 配合使用，例如 `open-telemetry/opentelemetry`.

## 使用

基于 docker 快速启动 jaeger

```bash

docker run -d --name jaeger \

  -p 16686:16686 \

  -p 4318:4318 \

  -p 4317:4317 \

  jaegertracing/all-in-one

```

注册 `TracerProvider` 并启动 Swoole http server:

```php

create('http://127.0.0.1:4318/v1/traces', 'application/json');

$exporter = new SpanExporter($transport);

$spanProcessor = new SimpleSpanProcessor($exporter);

$tracerProvider = new TracerProvider($spanProcessor);

// Use Swoole context storage

Context::setStorage(new SwooleContextStorage(new ContextStorage()));

// Register the tracer provider

Globals::registerInitializer(fn(Configurator $configurator) => $configurator->withTracerProvider($tracerProvider));

// Create a Swoole HTTP server, which will start on local port 9501

$http = new Server('127.0.0.1', 9501);

// Http request callback

$http->on('request', function ($request, $response) {

    $tracer = Globals::tracerProvider()->getTracer('io.opentelemetry.contrib.swoole.php');

    try {

        $root = $tracer->spanBuilder($request->server['request_uri'])

            ->setSpanKind(SpanKind::KIND_SERVER)

            ->startSpan();

        $scope = $root->activate();

        for ($i = 0; $i < 3; $i++) {

            // start a span, register some events

            $span = $tracer->spanBuilder('loop-' . $i)->startSpan();

            $span

                ->setAttribute('remote_ip', '1.2.3.4')

                ->setAttribute('country', 'USA');

            $span->addEvent('found_login' . $i, [

                'id' => $i,

                'username' => 'otuser' . $i,

            ]);

            $span->addEvent('generated_session', [

                'id' => md5((string) microtime(true)),

            ]);

            $span->end();

        }

    } finally {

        $root->end();

        $scope->detach();

    }

    $response->header('Content-Type', 'text/plain');

    $response->end('Hello Swoole Context');

});

// Start server

$http->start();

```

使用以下命令进行访问测试:

```bash

curl -i 127.0.0.1:9501/swoole-context-demo

```

最后打开浏览器访问 jaeger UI:  查询链路信息。