Jersey support for Prometheus Java Instrumentation library

This is Jersey exporter for Prometheus Java instrumentation library https://github.com/prometheus/client_java.

This exporter can be used to collect metrics from Jersey framework (inside GlassFish/Payara server).

Usage example:

  new JerseyStatisticsCollector(monitoringStatistics).register();
  

Monitoring statistics object can be injected into JavaEE application like this:

  @Inject
  private MonitoringStatistics monitoringStatistics;
  

In order for exporter to work, statistics collection has to be enabled in the ResourceConfig subclass:

  properties.put(ServerProperties.MONITORING_STATISTICS_ENABLED, true);
  

Analogously in web.xml:

    <init-param>
         <param-name>jersey.config.server.monitoring.statistics.enabled</param-name>
         <param-value>true</param-value>
    </init-param>