PHP code example of zlodes / prometheus-client

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

zlodes / prometheus-client example snippets

use Psr\Log\NullLogger;
use Zlodes\PrometheusClient\Collector\CollectorFactory;
use Zlodes\PrometheusClient\Exporter\FetcherExporter;
use Zlodes\PrometheusClient\Metric\Counter;
use Zlodes\PrometheusClient\Metric\Gauge;
use Zlodes\PrometheusClient\Metric\Histogram;
use Zlodes\PrometheusClient\Registry\ArrayRegistry;
use Zlodes\PrometheusClient\Storage\InMemoryStorage;

$registry = new ArrayRegistry();

$counterStorage = new InMemoryCounterStorage();
$gaugeStorage = new InMemoryGaugeStorage();
$histogramStorage = new InMemoryHistogramStorage();
$summaryStorage = new InMemorySummaryStorage();

// Register your metrics
$registry
    ->registerMetric(
        new Gauge('body_temperature', 'Body temperature in Celsius')
    )
    ->registerMetric(
        new Counter('steps', 'Steps count')
    )
    ->registerMetric(
        (new Histogram('http_request_duration_seconds', 'HTTP Request duration'))
            ->withBuckets([0.1, 0.5, 1]),
    )
    ->registerMetric(
        (new Summary('memory_used', 'Used memory in bytes'))
            ->withQuantiles([0.5, 0.9, 0.99])
    );

// Create a Collector factory

$collectorFactory = new CollectorFactory(
    $registry,
    $counterStorage,
    $gaugeStorage,
    $histogramStorage,
    $summaryStorage,
    new NullLogger(),
);

// Collect metrics
$bodyTemperatureGauge = $collectorFactory->gauge('body_temperature');

$bodyTemperatureGauge
    ->withLabels(['source' => 'armpit'])
    ->update(36.6);

$bodyTemperatureGauge
    ->withLabels(['source' => 'ass'])
    ->update(37.2);

$collectorFactory
    ->counter('steps')
    ->increment();

$requestTimer = $collectorFactory
    ->histogram('http_request_duration_seconds')
    ->startTimer();

usleep(50_000);

$requestTimer->stop();

$collectorFactory
    ->summary('memory_used')
    ->update(100);

$collectorFactory
    ->summary('memory_used')
    ->update(200);

// Export metrics
$fetcher = new StoredMetricsFetcher(
    $registry,
    $counterStorage,
    $gaugeStorage,
    $histogramStorage,
    $summaryStorage,
);

$exporter = new FetcherExporter($fetcher);

foreach ($exporter->export() as $metricOutput) {
    echo $metricOutput . "\n\n";
}

use PHPUnit\Framework\TestCase;
use Zlodes\PrometheusClient\Storage\Contracts\CounterStorage;
use Zlodes\PrometheusClient\Storage\InMemory\InMemoryCounterStorage;
use Zlodes\PrometheusClient\Storage\Testing\CounterStorageTesting;

class InMemoryCounterStorageTest extends TestCase
{
    use CounterStorageTesting;

    private function createStorage(): CounterStorage
    {
        return new InMemoryCounterStorage();
    }
}

shell
php ./vendor/bin/phpunit