org.apache.flume.instrumentation.http

Class HTTPMetricsServer

java.lang.Object

org.apache.flume.instrumentation.http.HTTPMetricsServer

All Implemented Interfaces:

Configurable, MonitorService

public class HTTPMetricsServer
extends Object
implements MonitorService

A Monitor service implementation that runs a web server on a configurable port and returns the metrics for components in JSON format.

Optional parameters:

port : The port on which the server should listen to.

Returns metrics in the following format:

{

"componentName1":{"metric1" : "metricValue1","metric2":"metricValue2"}

"componentName1":{"metric3" : "metricValue3","metric4":"metricValue4"}

}

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONFIG_PORT
static int	DEFAULT_PORT

Constructor Summary

Constructors

Constructor and Description
HTTPMetricsServer()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(Context context) Request the implementing class to (re)configure itself.
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PORT

public static int DEFAULT_PORT

CONFIG_PORT

public static String CONFIG_PORT

Constructor Detail

HTTPMetricsServer

public HTTPMetricsServer()

Method Detail

start

public void start()

Specified by:

start in interface MonitorService

stop

public void stop()

Specified by:

stop in interface MonitorService

configure

public void configure(Context context)

Description copied from interface: Configurable

Request the implementing class to (re)configure itself.

When configuration parameters are changed, they must be reflected by the component asap.

There are no thread safety guarantees on when configure might be called.

Specified by:

configure in interface Configurable