com.netflix.servo.monitor

Class DynamicGauge

java.lang.Object

com.netflix.servo.monitor.DynamicGauge

All Implemented Interfaces:

CompositeMonitor<java.lang.Long>, Monitor<java.lang.Long>

public final class DynamicGauge
extends java.lang.Object
implements CompositeMonitor<java.lang.Long>

Utility class that dynamically creates gauges based on an arbitrary (name, tagList), or MonitorConfig Gauges are automatically expired after 15 minutes of inactivity.

Method Summary

Modifier and Type	Method and Description
MonitorConfig	getConfig() Configuration used to identify a monitor and provide metadata used in aggregations.
java.util.List<Monitor<?>>	getMonitors() Returns a list of sub-monitors for this composite.
java.lang.Long	getValue() Returns the current value for the monitor for the default polling interval.
java.lang.Long	getValue(int pollerIndex) Returns the current value for the monitor for the nth poller.
static void	set(MonitorConfig config, double value) Set a gauge based on a given MonitorConfig by a given value.
static void	set(java.lang.String name, double value) Increment a gauge specified by a name.
static void	set(java.lang.String name, TagList list, double value) Set the gauge for a given name, tagList by a given value.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

set

public static void set(MonitorConfig config,
                       double value)

Set a gauge based on a given MonitorConfig by a given value.

Parameters:

config - The monitoring config

value - The amount added to the current value

set

public static void set(java.lang.String name,
                       double value)

Increment a gauge specified by a name.

set

public static void set(java.lang.String name,
                       TagList list,
                       double value)

Set the gauge for a given name, tagList by a given value.

getMonitors

public java.util.List<Monitor<?>> getMonitors()

Returns a list of sub-monitors for this composite.

Specified by:

getMonitors in interface CompositeMonitor<java.lang.Long>

getValue

public java.lang.Long getValue()

Returns the current value for the monitor for the default polling interval.

Specified by:

getValue in interface Monitor<java.lang.Long>

getValue

public java.lang.Long getValue(int pollerIndex)

Description copied from interface: Monitor

Returns the current value for the monitor for the nth poller.

Specified by:

getValue in interface Monitor<java.lang.Long>

getConfig

public MonitorConfig getConfig()

Configuration used to identify a monitor and provide metadata used in aggregations.

Specified by:

getConfig in interface Monitor<java.lang.Long>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object