JmxFeed (Brooklyn)

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brooklyn.event.feed.jmx
[Java] Class JmxFeed

java.lang.Object
  brooklyn.event.feed.AbstractFeed
      brooklyn.event.feed.jmx.JmxFeed

public class JmxFeed
extends AbstractFeed

Provides a feed of attribute values, by polling or subscribing over jmx. Example usage (e.g. in an entity that extends SoftwareProcessImpl):

 private JmxFeed feed;
 
 //@Override
 protected void connectSensors() {
   super.connectSensors();
   
   feed = JmxFeed.builder()
       .entity(this)
       .period(500, TimeUnit.MILLISECONDS)
       .pollAttribute(new JmxAttributePollConfig(ERROR_COUNT)
           .objectName(requestProcessorMbeanName)
           .attributeName("errorCount"))
       .pollAttribute(new JmxAttributePollConfig(SERVICE_UP)
           .objectName(serverMbeanName)
           .attributeName("Started")
           .onError(Functions.constant(false)))
       .build();
 
 
 {literal:
@}Override
 protected void disconnectSensors() {
   super.disconnectSensors();
   if (feed != null) feed.stop();
 }
 }

Authors:: aled

Nested Class Summary
`static class`	`JmxFeed.Builder`

Field Summary
`static long`	`JMX_CONNECTION_TIMEOUT_MS`
`static Logger`	`log`

Fields inherited from class AbstractFeed
entity, poller

Method Summary
`protected java.lang.Object`	`JmxFeed(JmxFeed.Builder builder)`
`static JmxFeed.Builder`	`builder()`
`java.lang.String`	`getJmxUri()`
`protected void`	`postStop()`
`protected void`	`preStart()`
`protected void`	`preStop()`

Methods inherited from class AbstractFeed
getEntity, isActivated, isActive, isConnected, postStop, preStart, preStop, resume, start, stop, suspend

Field Detail

JMX_CONNECTION_TIMEOUT_MS

public static final long JMX_CONNECTION_TIMEOUT_MS

log

public static final Logger log

Method Detail

JmxFeed

protected java.lang.Object JmxFeed(JmxFeed.Builder builder)

builder

public static JmxFeed.Builder builder()

getJmxUri

public java.lang.String getJmxUri()

postStop

@Override
protected void postStop()

preStart

@Override
protected void preStart()

preStop

@Override
protected void preStop()

brooklyn.event.feed.jmx [Java] Class JmxFeed