要使用 PHP 導(dǎo)出 Prometheus 格式的數(shù)據(jù),您需要創(chuàng)建一個 PHP 腳本來收集和格式化性能指標(biāo)
首先,確保您已安裝了 PHP。
創(chuàng)建一個名為 metrics.php
的新文件。在此文件中,我們將編寫收集和輸出指標(biāo)的代碼。
在 metrics.php
文件中,添加以下代碼:
<?php
// 假設(shè)這是您的應(yīng)用程序中的一些示例指標(biāo)
$metric_requests_total = 100;
$metric_failed_requests_total = 5;
$metric_request_duration_seconds = 0.5;
// 定義指標(biāo)并轉(zhuǎn)換為 Prometheus 格式
function format_metric($name, $value, $help = "", $type = "counter") {
echo "# HELP {$name} {$help}\n";
echo "# TYPE {$name} {$type}\n";
echo "{$name} {$value}\n";
}
// 輸出指標(biāo)
header("Content-Type: text/plain");
format_metric("http_requests_total", $metric_requests_total, "Total number of HTTP requests.");
format_metric("failed_requests_total", $metric_failed_requests_total, "Total number of failed requests.", "gauge");
format_metric("request_duration_seconds", $metric_request_duration_seconds, "HTTP request duration in seconds.", "histogram");
php -S localhost:8000 metrics.php
curl
訪問 http://localhost:8000
,您應(yīng)該看到類似以下內(nèi)容的 Prometheus 格式的指標(biāo)輸出:# HELP http_requests_total Total number of HTTP requests.
# TYPE http_requests_total counter
http_requests_total 100
# HELP failed_requests_total Total number of failed requests.
# TYPE failed_requests_total gauge
failed_requests_total 5
# HELP request_duration_seconds HTTP request duration in seconds.
# TYPE request_duration_seconds histogram
request_duration_seconds 0.5
注意:這只是一個簡單的示例,實際應(yīng)用程序中的指標(biāo)收集可能更復(fù)雜。您可能需要根據(jù)您的需求調(diào)整代碼。