com.bigdata.ganglia

Class GangliaMetadataFactory

java.lang.Object

com.bigdata.ganglia.GangliaMetadataFactory

All Implemented Interfaces:

IGangliaMetadataFactory

public class GangliaMetadataFactory
extends Object
implements IGangliaMetadataFactory

A factory which can be extended by an application.

Constructor Summary

Constructors

Constructor and Description
GangliaMetadataFactory(DefaultMetadataFactory defaultFactory)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(IGangliaMetadataFactory factory)
IGangliaMetadataMessage	newDecl(String hostName, String metricName, Object value) Factory for new declarations.
IGangliaMetadataMessage	resolve(IGangliaMetadataMessage decl) Always returns the caller's argument.

Methods inherited from class java.lang.Object

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

Constructor Detail

GangliaMetadataFactory

public GangliaMetadataFactory(DefaultMetadataFactory defaultFactory)

Method Detail

add

public void add(IGangliaMetadataFactory factory)

newDecl

public IGangliaMetadataMessage newDecl(String hostName,
                              String metricName,
                              Object value)

Factory for new declarations.

Overridden to try each registered delegate first and then the fallback delegate specified in the constructor. The first declaration returned by a delegate is returned to the caller.

Specified by:

newDecl in interface IGangliaMetadataFactory

Parameters:

hostName - The name of this host.

metricName - The ganglia metric name (suitably munged if necessary for use by ganglia).

value - The metric value (NOT null).

Returns:

The metric declaration -or- null if this factory does not know how to declare this metric.

resolve

public IGangliaMetadataMessage resolve(IGangliaMetadataMessage decl)

Always returns the caller's argument.

Specified by:

resolve in interface IGangliaMetadataFactory

Parameters:

decl - A declaration (typically received over the wire).

Returns:

The declaration to be used.