com.googlecode.fascinator.portal
Class HouseKeeper

java.lang.Object
  com.googlecode.fascinator.portal.HouseKeeper

All Implemented Interfaces:

GenericListener, Runnable, javax.jms.MessageListener

public class HouseKeeper
extends Object
implements GenericListener

The House Keeper is a messaging object that periodically wakes itself up to look for routine maintenance tasks requiring attention.

Author:

Greg Pendlebury

Field Summary

static Integer	DEFAULT_TIMEOUT Default timeout = 5 mins
static String	QUEUE_ID House Keeping queue

Constructor Summary

HouseKeeper()
Constructor required by ServiceLoader.

Method Summary

void	confirmMessage(String actionId) Confirm and remove a message/action
String	getId() Return the ID string for this listener
Map<String,Map<String,String>>	getQueueStats() Get the latest statistics on message queues.
List<UserAction>	getUserMessages() Get the messages to display for the user
void	init(JsonSimpleConfig config) Initialization method
void	onMessage(javax.jms.Message message) Callback function for incoming messages sent directly to housekeeping.
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 House Keeper.

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 String QUEUE_ID

House Keeping queue

See Also:

Constant Field Values

DEFAULT_TIMEOUT

public static final Integer DEFAULT_TIMEOUT

Default timeout = 5 mins

Constructor Detail

HouseKeeper

public HouseKeeper()

Constructor required by ServiceLoader. Be sure to use init()

Method Detail

run

public void run()

Start thread running

Specified by:

run in interface Runnable

init

public void init(JsonSimpleConfig config)
          throws Exception

Initialization method

Specified by:

init in interface GenericListener

Parameters:

config - Configuration to use

Throws:

Exception - for any failure

getId

public String getId()

Return the ID string for this listener

Specified by:

getId in interface GenericListener

start

public void start()
           throws Exception

Start the queue

Specified by:

start in interface GenericListener

Throws:

Exception - if an error occurred starting the JMS connections

stop

public void stop()
          throws Exception

Stop the House Keeper. Including stopping the storage and indexer

Specified by:

stop in interface GenericListener

Throws:

Exception

onMessage

public void onMessage(javax.jms.Message message)

Callback function for incoming messages sent directly to housekeeping.

Specified by:

onMessage in interface javax.jms.MessageListener

Parameters:

message - The incoming message

getUserMessages

public List<UserAction> getUserMessages()

Get the messages to display for the user

confirmMessage

public void confirmMessage(String actionId)
                    throws Exception

Confirm and remove a message/action

Parameters:

actionId - The ID of the action to remove

Throws:

Exception

setPriority

public void setPriority(int newPriority)

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

Specified by:

setPriority in interface GenericListener

Parameters:

newPriority - The priority level to set the thread at

getQueueStats

public Map<String,Map<String,String>> getQueueStats()

Get the latest statistics on message queues.

Returns:

Map> of all queues and their statistics