org.apache.flink.metrics.jmx

Class JMXReporter

java.lang.Object

org.apache.flink.metrics.jmx.JMXReporter

All Implemented Interfaces:

MetricReporter

public class JMXReporter
extends Object
implements MetricReporter

MetricReporter that exports Metrics via JMX.

Largely based on the JmxReporter class of the dropwizard metrics library https://github.com/dropwizard/metrics/blob/master/metrics-core/src/main/java/io/dropwizard/metrics/JmxReporter.java

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	JMXReporter.JmxCounterMBean The MBean interface for an exposed counter.
static interface	JMXReporter.JmxGaugeMBean The MBean interface for an exposed gauge.
static interface	JMXReporter.JmxHistogramMBean The MBean interface for an exposed histogram.
static interface	JMXReporter.JmxMeterMBean The MBean interface for an exposed meter.
static interface	JMXReporter.MetricMBean The common MBean interface for all metrics.

Method Summary

Modifier and Type	Method and Description
void	close() Closes this reporter.
Optional<Integer>	getPort()
void	notifyOfAddedMetric(Metric metric, String metricName, MetricGroup group) Called when a new Metric was added.
void	notifyOfRemovedMetric(Metric metric, String metricName, MetricGroup group) Called when a Metric was removed.
void	open(MetricConfig config) Configures this reporter.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

open

public void open(MetricConfig config)

Description copied from interface: MetricReporter

Configures this reporter.

If the reporter was instantiated generically and hence parameter-less, this method is the place where the reporter sets it's basic fields based on configuration values. Otherwise, this method will typically be a no-op since resources can be acquired in the constructor.

This method is always called first on a newly instantiated reporter.

Specified by:

open in interface MetricReporter

Parameters:

config - A properties object that contains all parameters set for this reporter.

close

public void close()

Description copied from interface: MetricReporter

Closes this reporter. Should be used to close channels, streams and release resources.

Specified by:

close in interface MetricReporter

getPort

public Optional<Integer> getPort()

notifyOfAddedMetric

public void notifyOfAddedMetric(Metric metric,
                                String metricName,
                                MetricGroup group)

Description copied from interface: MetricReporter

Called when a new Metric was added.

Specified by:

notifyOfAddedMetric in interface MetricReporter

Parameters:

metric - the metric that was added

metricName - the name of the metric

group - the group that contains the metric

notifyOfRemovedMetric

public void notifyOfRemovedMetric(Metric metric,
                                  String metricName,
                                  MetricGroup group)

Description copied from interface: MetricReporter

Called when a Metric was removed.

Specified by:

notifyOfRemovedMetric in interface MetricReporter

Parameters:

metric - the metric that should be removed

metricName - the name of the metric

group - the group that contains the metric