Package org.jmxtrans.agent

Class DiscoveryQuery

java.lang.Object

org.jmxtrans.agent.Query

org.jmxtrans.agent.DiscoveryQuery

All Implemented Interfaces:

Collector

public class DiscoveryQuery
extends Query

DiscoveryQuery : Used to discover a list of JMX beans matching a specific naming pattern. Used with the Zabbix server.

For example, the following discovery rule :

 
  <discoveryQuery 
    objectName="java.lang:type=GarbageCollector,name=*" 
    attributes="name,type" 
    resultAlias="discovery[garbageCollector]" 
    collectIntervalInSeconds="300"/>
    
  <query objectName="java.lang:type=GarbageCollector,name=*"
    attributes="CollectionTime,CollectionCount"
    resultAlias="discovery[GarbageCollector.%name%.#attribute#]" />
 

May yield the following discovery output (formatted for readability) :

 
 {"data":[
   {"{#name}":"PS Scavenge","{#type}":"GarbageCollector"},
   {"{#name}":"PS MarkSweep","{#type}":"GarbageCollector"}
 ]}
 

On the Zabbix side, create a "Discovery Rule" of type "Zabbix trapper" with a "Key" that matches the result alias. You can then create "Item prototypes" that use the values. Sample Zabbix configuration that matches the example above :

 
 Discovery rule : 
   Name : Discover Garbage Collectors
   Key : discovery[garbageCollector]
   
 Item Prototype
   Name : Object {#TYPE} named {#NAME}
   Key : discovery[{#TYPE}.{#NAME}.CollectionTime]
 
 Item Prototype
   Name : Object {#TYPE} named {#NAME}
   Key : discovery[{#TYPE}.{#NAME}.CollectionCount]
 
 

NOTE : It can take a few minutes for Zabbix to enable newly created discovery rules and item prototypes.

Author:

Steve McDuff

Field Summary

Fields inherited from class org.jmxtrans.agent.Query

attributes, key, objectName, position, resultAlias, resultNameStrategy

Constructor Summary

Constructors

Constructor	Description
DiscoveryQuery(java.lang.String objectName, java.util.List<java.lang.String> attributes, java.lang.String key, java.lang.Integer position, java.lang.String type, java.lang.String resultAlias, ResultNameStrategy resultNameStrategy, java.lang.Integer collectInterval)

Method Summary

Modifier and Type	Method	Description
void	collectAndExport(javax.management.MBeanServer mbeanServer, OutputWriter outputWriter)
java.lang.String	formatDiscoveryValue(java.lang.String keyProperty)

Methods inherited from class org.jmxtrans.agent.Query

getAttributes, getCollectIntervalOverrideOrNull, getKey, getObjectName, getPosition, getResultAlias, getType, toString

Methods inherited from class java.lang.Object

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

Constructor Details

DiscoveryQuery

public DiscoveryQuery(java.lang.String objectName,
java.util.List<java.lang.String> attributes,
java.lang.String key,
java.lang.Integer position,
java.lang.String type,
java.lang.String resultAlias,
ResultNameStrategy resultNameStrategy,
java.lang.Integer collectInterval)

Method Details

collectAndExport

public void collectAndExport(javax.management.MBeanServer mbeanServer,
OutputWriter outputWriter)

Specified by:

collectAndExport in interface Collector

Overrides:

collectAndExport in class Query

formatDiscoveryValue

public java.lang.String formatDiscoveryValue(java.lang.String keyProperty)