org.eclipse.smila.workermanager.internal
Class WorkerManagerImpl

java.lang.Object
  org.eclipse.smila.workermanager.internal.WorkerManagerImpl

All Implemented Interfaces:

TaskKeepAliveListener, WorkerManager

public class WorkerManagerImpl
extends java.lang.Object
implements WorkerManager, TaskKeepAliveListener

WorkerManager implementation. Workers are registered via addWorker() method.

Field Summary

Fields inherited from interface org.eclipse.smila.workermanager.WorkerManager

PREFIX_INTERNAL

Constructor Summary

WorkerManagerImpl()

Method Summary

protected void	activate(ComponentContext context) OSGi Declarative Services service activation method.
void	addKeepAliveListener(TaskKeepAliveListener listener)
void	addKeepAliveTask(Task task)
void	addWorker(Worker worker) Add the given worker.
boolean	containsWorker(java.lang.String worker) Returns whether the given worker was successfully registered.
protected void	deactivate(ComponentContext context) OSGi Declarative Services service deactivation method.
boolean	finishCompletedTasks() finish completed tasks.
void	finishTask(WorkerRunner taskWorker)
boolean	getAndStartTask(java.lang.String worker) get and submit task for the given worker if that doesn't exceed worker's max scale up.
boolean	getAndStartTasks() get and start tasks as long as scaleup limits are not utilized.
AnyMap	getInfo()
WorkerDefinition	getWorkerDefinition(java.lang.String worker)
void	removedTask(Task task) Called by keep alive mechanism when a task was cancelled.
void	removeKeepAliveListener(TaskKeepAliveListener listener)
void	removeKeepAliveTask(Task task)
void	removeWorker(Worker worker) Removes the given worker.
void	setClusterConfigService(ClusterConfigService ccs) needed to get cluster configuration.
void	setDefinitionPersistence(DefinitionPersistence defPersistence) set OSGI service.
void	setKeepAliveInterval(long keepAliveCheckMillis, long keepAliveSendSeconds) for testing.
void	setObjectStoreService(ObjectStoreService objectStore) method for DS to set a service reference.
void	setScaleUpControl(ScaleUpControl scaleUpControl)
void	setTaskLogFactory(TaskLogFactory taskLogFactory) method for DS to set a service reference.
void	setTaskManager(TaskManager taskManager) method for DS to set a service reference.
boolean	startAndFinishTasks() do one turn in the "get-task-finish-task" loop.
void	unsetClusterConfigService(ClusterConfigService ccs) remove an ClusterConfigService.
void	unsetDefinitionPersistence(DefinitionPersistence defPersistence) unset OSGI service.
void	unsetObjectStoreService(ObjectStoreService objectStore) method for DS to unset a service reference.
void	unsetTaskLogFactory(TaskLogFactory taskLogFactory) method for DS to unset a service reference.
void	unsetTaskManager(TaskManager taskManager) method for DS to unset a service reference.

Methods inherited from class java.lang.Object

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

Constructor Detail

WorkerManagerImpl

public WorkerManagerImpl()

Method Detail

startAndFinishTasks

public boolean startAndFinishTasks()

do one turn in the "get-task-finish-task" loop.

getAndStartTasks

public boolean getAndStartTasks()

get and start tasks as long as scaleup limits are not utilized.

finishCompletedTasks

public boolean finishCompletedTasks()

finish completed tasks.

getAndStartTask

public boolean getAndStartTask(java.lang.String worker)

get and submit task for the given worker if that doesn't exceed worker's max scale up.

Parameters:

worker - the worker for which to get a task

Returns:

true if a new task was started

getWorkerDefinition

public WorkerDefinition getWorkerDefinition(java.lang.String worker)

Parameters:

worker - the worker to return the worker definition for

Returns:

worker definition for given worker

finishTask

public void finishTask(WorkerRunner taskWorker)

Parameters:

taskWorker - the TaskWorker containing the (completed) Task to finish.

activate

protected void activate(ComponentContext context)

OSGi Declarative Services service activation method.

deactivate

protected void deactivate(ComponentContext context)

OSGi Declarative Services service deactivation method.

Parameters:

context - OSGi service component context.

addWorker

public void addWorker(Worker worker)

Add the given worker.

removeWorker

public void removeWorker(Worker worker)

Removes the given worker.

containsWorker

public boolean containsWorker(java.lang.String worker)

Description copied from interface: WorkerManager

Returns whether the given worker was successfully registered.

Specified by:

containsWorker in interface WorkerManager

addKeepAliveListener

public void addKeepAliveListener(TaskKeepAliveListener listener)

Specified by:

addKeepAliveListener in interface WorkerManager

Parameters:

listener - Listener that wants to be informed about keep alive failures.

removeKeepAliveListener

public void removeKeepAliveListener(TaskKeepAliveListener listener)

Specified by:

removeKeepAliveListener in interface WorkerManager

Parameters:

listener - Listener that no longer wants to be informed about keep alive failures.

addKeepAliveTask

public void addKeepAliveTask(Task task)

Specified by:

addKeepAliveTask in interface WorkerManager

Parameters:

task - task to add under keep alive control

removeKeepAliveTask

public void removeKeepAliveTask(Task task)

Specified by:

removeKeepAliveTask in interface WorkerManager

Parameters:

task - task to remove from keep alive control

removedTask

public void removedTask(Task task)

Called by keep alive mechanism when a task was cancelled.

Specified by:

removedTask in interface TaskKeepAliveListener

Parameters:

task - the task that has been removed.

setKeepAliveInterval

public void setKeepAliveInterval(long keepAliveCheckMillis,
                                 long keepAliveSendSeconds)

Description copied from interface: WorkerManager

for testing.

Specified by:

setKeepAliveInterval in interface WorkerManager

Parameters:

keepAliveCheckMillis - the time interval in ms after which we check if there are tasks for keep alive.

keepAliveSendSeconds - the time interval in seconds after which keep alive is sent for a processed task

setScaleUpControl

public void setScaleUpControl(ScaleUpControl scaleUpControl)

Specified by:

setScaleUpControl in interface WorkerManager

Parameters:

scaleUpControl - defines scale up limit for workers

getInfo

public AnyMap getInfo()

Specified by:

getInfo in interface WorkerManager

Returns:

workerManager info object.

setClusterConfigService

public void setClusterConfigService(ClusterConfigService ccs)

needed to get cluster configuration.

unsetClusterConfigService

public void unsetClusterConfigService(ClusterConfigService ccs)

remove an ClusterConfigService. To be called by DS runtime after deactivation.

setDefinitionPersistence

public void setDefinitionPersistence(DefinitionPersistence defPersistence)

set OSGI service.

unsetDefinitionPersistence

public void unsetDefinitionPersistence(DefinitionPersistence defPersistence)

unset OSGI service.

setTaskManager

public void setTaskManager(TaskManager taskManager)

method for DS to set a service reference.

unsetTaskManager

public void unsetTaskManager(TaskManager taskManager)

method for DS to unset a service reference.

setTaskLogFactory

public void setTaskLogFactory(TaskLogFactory taskLogFactory)

method for DS to set a service reference.

unsetTaskLogFactory

public void unsetTaskLogFactory(TaskLogFactory taskLogFactory)

method for DS to unset a service reference.

setObjectStoreService

public void setObjectStoreService(ObjectStoreService objectStore)

method for DS to set a service reference.

unsetObjectStoreService

public void unsetObjectStoreService(ObjectStoreService objectStore)

method for DS to unset a service reference.