org.springframework.boot.actuate.metrics.statsd

Class StatsdMetricWriter

java.lang.Object

org.springframework.boot.actuate.metrics.statsd.StatsdMetricWriter

All Implemented Interfaces:

Closeable, AutoCloseable, CounterWriter, GaugeWriter, MetricWriter

public class StatsdMetricWriter
extends Object
implements MetricWriter, Closeable

A MetricWriter that pushes data to statsd. Statsd has the concept of counters and gauges, but only supports gauges with data type Long, so values will be truncated towards zero. Metrics whose name contains "timer." (but not "gauge." or "counter.") will be treated as execution times (in statsd terms). Anything incremented is treated as a counter, and anything with a snapshot value in set(Metric) is treated as a gauge.

Since:

1.3.0

Author:

Dave Syer

Constructor Summary

Constructors

Constructor and Description
StatsdMetricWriter(String host, int port) Create a new writer instance with the given parameters.
StatsdMetricWriter(String prefix, String host, int port) Create a new writer with the given parameters.

Method Summary

Modifier and Type	Method and Description
void	close()
void	increment(Delta<?> delta) Increment the value of a metric (or decrement if the delta is negative).
void	reset(String name) Reset the value of a metric, usually to zero value.
void	set(Metric<?> value) Set the value of a metric.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatsdMetricWriter

public StatsdMetricWriter(String host,
                          int port)

Create a new writer instance with the given parameters.

Parameters:

host - the hostname for the statsd server

port - the port for the statsd server

StatsdMetricWriter

public StatsdMetricWriter(String prefix,
                          String host,
                          int port)

Create a new writer with the given parameters.

Parameters:

prefix - the prefix to apply to all metric names (can be null)

host - the hostname for the statsd server

port - the port for the statsd server

Method Detail

increment

public void increment(Delta<?> delta)

Description copied from interface: CounterWriter

Increment the value of a metric (or decrement if the delta is negative). The name of the delta is the name of the metric to increment.

Specified by:

increment in interface CounterWriter

Parameters:

delta - the amount to increment by

set

public void set(Metric<?> value)

Description copied from interface: GaugeWriter

Set the value of a metric.

Specified by:

set in interface GaugeWriter

Parameters:

value - the value

reset

public void reset(String name)

Description copied from interface: CounterWriter

Reset the value of a metric, usually to zero value. Implementations can discard the old values if desired, but may choose not to. This operation is optional (some implementations may not be able to fulfill the contract, in which case they should simply do nothing).

Specified by:

reset in interface CounterWriter

Parameters:

name - the name to reset

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable