README

该项目已不再在此维护。请前往https://github.com/endclothing/prometheus_client_php。

PHP编写的Prometheus客户端库

该库使用Redis或APCu进行客户端聚合。如果使用Redis，我们建议在您的PHP工作进程旁边运行本地Redis实例。

它是如何工作的？

通常PHP工作进程之间不共享任何状态。您可以选择三种适配器：Redis、APC或内存适配器。第一个需要单独的二进制运行，第二个只需安装APC扩展。如果您不需要在请求之间持久化度量（例如，长期运行的cron作业或脚本），内存适配器可能适合使用。

使用方法

简单的计数器

\Prometheus\CollectorRegistry::getDefault()
    ->getOrRegisterCounter('', 'some_quick_counter', 'just a quick measurement')
    ->inc();

写入一些增强型度量

$registry = \Prometheus\CollectorRegistry::getDefault();

$counter = $registry->getOrRegisterCounter('test', 'some_counter', 'it increases', ['type']);
$counter->incBy(3, ['blue']);

$gauge = $registry->getOrRegisterGauge('test', 'some_gauge', 'it sets', ['type']);
$gauge->set(2.5, ['blue']);

$histogram = $registry->getOrRegisterHistogram('test', 'some_histogram', 'it observes', ['type'], [0.1, 1, 2, 3.5, 4, 5, 6, 7, 8, 9]);
$histogram->observe(3.5, ['blue']);

手动注册和检索度量（这些步骤在getOrRegister...方法中组合）

$registry = \Prometheus\CollectorRegistry::getDefault();

$counterA = $registry->registerCounter('test', 'some_counter', 'it increases', ['type']);
$counterA->incBy(3, ['blue']);

// once a metric is registered, it can be retrieved using e.g. getCounter:
$counterB = $registry->getCounter('test', 'some_counter')
$counterB->incBy(2, ['red']);

暴露度量

$registry = \Prometheus\CollectorRegistry::getDefault();

$renderer = new RenderTextFormat();
$result = $renderer->render($registry->getMetricFamilySamples());

header('Content-type: ' . RenderTextFormat::MIME_TYPE);
echo $result;

更改Redis选项（示例显示默认值）

\Prometheus\Storage\Redis::setDefaultOptions(
    [
        'host' => '127.0.0.1',
        'port' => 6379,
        'password' => null,
        'timeout' => 0.1, // in seconds
        'read_timeout' => 10, // in seconds
        'persistent_connections' => false
    ]
);

使用内存存储

$registry = new CollectorRegistry(new InMemory());

$counter = $registry->registerCounter('test', 'some_counter', 'it increases', ['type']);
$counter->incBy(3, ['blue']);

$renderer = new RenderTextFormat();
$result = $renderer->render($registry->getMetricFamilySamples());

也可以查看示例。

开发

依赖关系

• PHP 5.6
• PHP Redis扩展
• PHP APCu扩展
• Composer
• Redis

启动Redis实例

docker-compose up Redis

运行测试

composer install

# when Redis is not listening on localhost:
# export REDIS_HOST=192.168.59.100
./vendor/bin/phpunit

黑盒测试

只需使用docker-compose启动nginx、fpm和Redis配置

docker-compose up

选择您要测试的适配器。

docker-compose run phpunit env ADAPTER=apc vendor/bin/phpunit tests/Test/
docker-compose run phpunit env ADAPTER=redis vendor/bin/phpunit tests/Test/