com.yahoo.bard.webservice.application

Class TaskScheduler

java.lang.Object

java.util.concurrent.AbstractExecutorService

java.util.concurrent.ThreadPoolExecutor

java.util.concurrent.ScheduledThreadPoolExecutor

com.yahoo.bard.webservice.application.TaskScheduler

All Implemented Interfaces:

Executor, ExecutorService, ScheduledExecutorService

public class TaskScheduler
extends ScheduledThreadPoolExecutor

Defines a scheduler that runs tasks that load data from Druid periodically or in one-off fashion.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ThreadPoolExecutor

ThreadPoolExecutor.AbortPolicy, ThreadPoolExecutor.CallerRunsPolicy, ThreadPoolExecutor.DiscardOldestPolicy, ThreadPoolExecutor.DiscardPolicy

Constructor Summary

Constructors

Constructor and Description
TaskScheduler(int poolSize) Creates a new scheduler for loaders with the given thread pool size.

Method Summary

Modifier and Type	Method and Description
protected <V> RunnableScheduledFuture<V>	decorateTask(Callable<V> callable, RunnableScheduledFuture<V> task)
protected <V> RunnableScheduledFuture<V>	decorateTask(Runnable runnable, RunnableScheduledFuture<V> task)
void	shutdown()
List<Runnable>	shutdownNow()

Methods inherited from class java.util.concurrent.ScheduledThreadPoolExecutor

execute, getContinueExistingPeriodicTasksAfterShutdownPolicy, getExecuteExistingDelayedTasksAfterShutdownPolicy, getQueue, getRemoveOnCancelPolicy, schedule, schedule, scheduleAtFixedRate, scheduleWithFixedDelay, setContinueExistingPeriodicTasksAfterShutdownPolicy, setExecuteExistingDelayedTasksAfterShutdownPolicy, setRemoveOnCancelPolicy, submit, submit, submit

Methods inherited from class java.util.concurrent.ThreadPoolExecutor

afterExecute, allowCoreThreadTimeOut, allowsCoreThreadTimeOut, awaitTermination, beforeExecute, finalize, getActiveCount, getCompletedTaskCount, getCorePoolSize, getKeepAliveTime, getLargestPoolSize, getMaximumPoolSize, getPoolSize, getRejectedExecutionHandler, getTaskCount, getThreadFactory, isShutdown, isTerminated, isTerminating, prestartAllCoreThreads, prestartCoreThread, purge, remove, setCorePoolSize, setKeepAliveTime, setMaximumPoolSize, setRejectedExecutionHandler, setThreadFactory, terminated, toString

Methods inherited from class java.util.concurrent.AbstractExecutorService

invokeAll, invokeAll, invokeAny, invokeAny, newTaskFor, newTaskFor

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.concurrent.ExecutorService

awaitTermination, invokeAll, invokeAll, invokeAny, invokeAny, isShutdown, isTerminated

Constructor Detail

TaskScheduler

public TaskScheduler(int poolSize)

Creates a new scheduler for loaders with the given thread pool size.

Parameters:

poolSize - The number of threads available in the pool of this scheduler.

Method Detail

decorateTask

protected <V> RunnableScheduledFuture<V> decorateTask(Runnable runnable,
                                                      RunnableScheduledFuture<V> task)

Overrides:

decorateTask in class ScheduledThreadPoolExecutor

decorateTask

protected <V> RunnableScheduledFuture<V> decorateTask(Callable<V> callable,
                                                      RunnableScheduledFuture<V> task)

Overrides:

decorateTask in class ScheduledThreadPoolExecutor

shutdown

public void shutdown()

Specified by:

shutdown in interface ExecutorService

Overrides:

shutdown in class ScheduledThreadPoolExecutor

shutdownNow

public List<Runnable> shutdownNow()

Specified by:

shutdownNow in interface ExecutorService

Overrides:

shutdownNow in class ScheduledThreadPoolExecutor