com.googlecode.fascinator.portal

Class BrokerMonitor

java.lang.Object

com.googlecode.fascinator.portal.BrokerMonitor

All Implemented Interfaces:

com.googlecode.fascinator.common.messaging.GenericListener, java.lang.Runnable, javax.jms.MessageListener

public class BrokerMonitor
extends java.lang.Object
implements com.googlecode.fascinator.common.messaging.GenericListener

Monitoring class for the AMQ Broker. Periodically sends updated statistics to the house keeper.

Author:

Greg Pendlebury

Field Summary

Fields

Modifier and Type	Field and Description
static long	AMQ_TIMEOUT Default timeout for AMQ stats response = 500 milliseconds
static long	DEFAULT_TIMEOUT Default timeout for callback 'tick' = 10 seconds
static java.lang.String	QUEUE_ID Queue string
static java.lang.String	STATS_PREFIX Broker queue prefix for stats

Constructor Summary

Constructors

Constructor and Description
BrokerMonitor() Constructor required by ServiceLoader
BrokerMonitor(org.apache.activemq.broker.BrokerService brokerService) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getId() Return the ID string for this listener.
void	init(com.googlecode.fascinator.common.JsonSimpleConfig config) Initialization method
void	onMessage(javax.jms.Message message) Callback function for incoming messages.
void	run() Start thread running
void	setPriority(int newPriority) Sets the priority level for the thread.
void	start() Start the queue
void	stop() Stop the Render Queue Consumer.

Methods inherited from class java.lang.Object

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

Field Detail

QUEUE_ID

public static final java.lang.String QUEUE_ID

Queue string

See Also:

Constant Field Values

STATS_PREFIX

public static final java.lang.String STATS_PREFIX

Broker queue prefix for stats

See Also:

Constant Field Values

DEFAULT_TIMEOUT

public static final long DEFAULT_TIMEOUT

Default timeout for callback 'tick' = 10 seconds

See Also:

Constant Field Values

AMQ_TIMEOUT

public static final long AMQ_TIMEOUT

Default timeout for AMQ stats response = 500 milliseconds

See Also:

Constant Field Values

Constructor Detail

BrokerMonitor

public BrokerMonitor()

Constructor required by ServiceLoader

BrokerMonitor

public BrokerMonitor(org.apache.activemq.broker.BrokerService brokerService)
              throws java.lang.Exception

Constructor.

Parameters:

brokerService - AMQ Broker service we're monitoring

Throws:

java.lang.Exception - If unable to start properly

Method Detail

run

public void run()

Start thread running

Specified by:

run in interface java.lang.Runnable

init

public void init(com.googlecode.fascinator.common.JsonSimpleConfig config)
          throws java.lang.Exception

Initialization method

Specified by:

init in interface com.googlecode.fascinator.common.messaging.GenericListener

Parameters:

config - Configuration to use

Throws:

java.lang.Exception - if an error occurred

start

public void start()
           throws java.lang.Exception

Start the queue

Specified by:

start in interface com.googlecode.fascinator.common.messaging.GenericListener

Throws:

java.lang.Exception - if an error occurred

getId

public java.lang.String getId()

Return the ID string for this listener.

Specified by:

getId in interface com.googlecode.fascinator.common.messaging.GenericListener

stop

public void stop()

Stop the Render Queue Consumer. Including stopping the storage and indexer

Specified by:

stop in interface com.googlecode.fascinator.common.messaging.GenericListener

onMessage

public void onMessage(javax.jms.Message message)

Callback function for incoming messages.

Specified by:

onMessage in interface javax.jms.MessageListener

Parameters:

message - The incoming message

setPriority

public void setPriority(int newPriority)

Sets the priority level for the thread. Used by the OS.

Specified by:

setPriority in interface com.googlecode.fascinator.common.messaging.GenericListener

Parameters:

newPriority - The priority level to set the thread at