Examples with ThreadExports io.prometheus.client.hotspot.ThreadExports used on opensource projects

Example 1 with ThreadExports

use of io.prometheus.client.hotspot.ThreadExports in project bookkeeper by apache.

the class PrometheusMetricsProvider method start.

@Override
public void start(Configuration conf) {
    int httpPort = conf.getInt(PROMETHEUS_STATS_HTTP_PORT, DEFAULT_PROMETHEUS_STATS_HTTP_PORT);
    InetSocketAddress httpEndpoint = InetSocketAddress.createUnresolved("0.0.0.0", httpPort);
    this.server = new Server(httpEndpoint);
    ServletContextHandler context = new ServletContextHandler();
    context.setContextPath("/");
    server.setHandler(context);
    context.addServlet(new ServletHolder(new PrometheusServlet(this)), "/metrics");
    try {
        server.start();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
    // Include standard JVM stats
    new StandardExports().register(registry);
    new MemoryPoolsExports().register(registry);
    new GarbageCollectorExports().register(registry);
    new ThreadExports().register(registry);
    // Add direct memory allocated through unsafe
    Gauge.build("jvm_memory_direct_bytes_used", "-").create().setChild(new Child() {

        @Override
        public double get() {
            return directMemoryUsage != null ? directMemoryUsage.longValue() : Double.NaN;
        }
    }).register(registry);
    Gauge.build("jvm_memory_direct_bytes_max", "-").create().setChild(new Child() {

        @Override
        public double get() {
            return PlatformDependent.maxDirectMemory();
        }
    }).register(registry);
    executor = Executors.newSingleThreadScheduledExecutor(new DefaultThreadFactory("metrics"));
    int latencyRolloverSeconds = conf.getInt(PROMETHEUS_STATS_LATENCY_ROLLOVER_SECONDS, DEFAULT_PROMETHEUS_STATS_LATENCY_ROLLOVER_SECONDS);
    executor.scheduleAtFixedRate(() -> {
        rotateLatencyCollection();
    }, 1, latencyRolloverSeconds, TimeUnit.SECONDS);
    log.info("Started Prometheus stats endpoint at {}", httpEndpoint);
}