org.wso2.broker.core.task

Class TaskExecutorService<T extends Task>

java.lang.Object

org.wso2.broker.core.task.TaskExecutorService<T>

Type Parameters:

T - Implementation of the Task interface.

public final class TaskExecutorService<T extends Task>
extends Object

Manage processing of Task. Holds the TaskHolder ring and the TaskProcessor list that process the Task.

Constructor Summary

Constructors

Constructor and Description
TaskExecutorService(int workerCount, long idleTaskDelayMillis, ThreadFactory threadFactory) Create a Task manager with a given number of threads to process the tasks.

Method Summary

Modifier and Type	Method and Description
void	add(T task) Add a new task.
T	getTask(String taskId) Returns the Task implementation relevant to the task id.
void	remove(String id) Removes the Task with the given task id from the Task ring.
void	setExceptionHandler(TaskExceptionHandler exceptionHandler) Set the exception handler for the task processors.
void	shutdown() Stop processing tasks and shutdown the executor pool.
void	start() Start processing the tasks.
void	stop() Stop processing the tasks.

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskExecutorService

public TaskExecutorService(int workerCount,
                           long idleTaskDelayMillis,
                           ThreadFactory threadFactory)

Create a Task manager with a given number of threads to process the tasks.

Parameters:

workerCount - maximum number of threads spawned to process the tasks.

idleTaskDelayMillis - delay set for processing a task with IDLE Task.TaskHint.

threadFactory - thread factory to be used for processing the tasks.

Method Detail

add

public void add(T task)

Add a new task. If the task is already added (same id) task add request will be ignored.

This add Task request is processed asynchronously.

Parameters:

task - Task

remove

public void remove(String id)

Removes the Task with the given task id from the Task ring.

Parameters:

id - ID of theTask to be removed.

getTask

public T getTask(String taskId)

Returns the Task implementation relevant to the task id.

Parameters:

taskId - id of the Task implementation.

Returns:

Task implementation.

stop

public void stop()

Stop processing the tasks.

shutdown

public void shutdown()

Stop processing tasks and shutdown the executor pool. This call is blocked until the maxTerminationAwaitTime time is reached or all the tasks are stopped and the executor pool is shutdown.

start

public void start()

Start processing the tasks.

setExceptionHandler

public void setExceptionHandler(TaskExceptionHandler exceptionHandler)

Set the exception handler for the task processors.

Parameters:

exceptionHandler - TaskExceptionHandler