JVM metrics

Description

Provides an opinionated implementation of recording and reporting JVM metrics.

This module is base on dropwizard jvm metrics.

Usage

Config by property file -Dmetric.properties=your file or it will look for metric.properties in the classpath.

metric.type=classloading gc memory thread_states //default
metric.output=statsd //default   or console 
convertRatesTo=MINUTES //default
convertDurationsTo=MINUTES //default
metrics.from=JVMMonitor  //default
statsd.port=8125 //default
statsd.host=10.63.71.199  //default localhost

or in the module

install module (java)

public class MyModule extends AbstractModule {
    @Override
    protected void configure() {
        MetricsModule metricsModule = new MetricsModule();
        metricsModule.configure((config) -> {
                      config.from = "test-jvm-metrics";//metric prefix
                  });
        });
        install(metricsModule);
    }
}

then start the reporter

In Ratpack, you may create a service like below:

          @Override
            public void onStart(StartEvent event) throws Exception {
                event.getRegistry().get(JVMMonitor.class).getReporter().get()
                    .start(10, TimeUnit.SECONDS);
            }

Features

• Available Gauges:
  • ClassLoadingGaugeSet as "classloading"
  • GarbageCollectorMetricSet as "gc"
  • MemoryUsageGaugeSet as "memory"
  • ThreadDeadlockDetector as "thread_deadlock"
  • ThreadStatesGaugeSet as "thread_states"