为普罗米修斯公开指标端点的替代方案是什么？

Question

我想将 Prometheus 指标公开给端点。我没有 spring-boot，所以我需要自己公开指标。

我从中获取了示例代码：

https://micrometer.io/docs/registry/prometheus#_configuring

PrometheusMeterRegistry prometheusRegistry = new PrometheusMeterRegistry(PrometheusConfig.DEFAULT);

try {
    HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
    server.createContext("/prometheus", httpExchange -> {
        String response = prometheusRegistry.scrape(); (1)
        httpExchange.sendResponseHeaders(200, response.getBytes().length);
        try (OutputStream os = httpExchange.getResponseBody()) {
            os.write(response.getBytes());
        }
    });

    new Thread(server::start).start();
} catch (IOException e) {
    throw new RuntimeException(e);
}

虽然它有效，但我想避免使用 sun 包。有没有办法用 netty、okhttp 或 apache 来做到既简短又优雅？

谢谢。

Answer 1

您可以使用这段代码：

Server server = new Server(8080);
ServletContextHandler context = new ServletContextHandler();
context.setContextPath("/");
server.setHandler(context);
context.addServlet(new ServletHolder(new MetricsServlet()), "/prometheus");

导入中没有sun包，只有Jetty and Prometheus Java client:

import io.prometheus.client.exporter.MetricsServlet;
import org.eclipse.jetty.server.Server;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;

为普罗米修斯公开指标端点的替代方案是什么？

What would be the alternative to expose metrics endpoint for Prometheus?

java

http

prometheus

micrometer