org.apache.oodt.cas.resource.scheduler

Interface Scheduler

All Superinterfaces:

Runnable

All Known Implementing Classes:

LRUScheduler, QueueMuxScheduler

public interface Scheduler
extends Runnable

Version:

$Revision$

A scheduler interface.

Author:

woollard, bfoster

Method Summary

Modifier and Type	Method and Description
Batchmgr	getBatchmgr()
JobQueue	getJobQueue()
Monitor	getMonitor()
QueueManager	getQueueManager()
ResourceNode	nodeAvailable(JobSpec spec) Returns the ResourceNode that is considered to be most available within our underlying set of resources for the given JobSpec.
boolean	schedule(JobSpec spec) Schedules a job to be executed by a particular batch manager.

Methods inherited from interface java.lang.Runnable

run

Method Detail

schedule

boolean schedule(JobSpec spec)
          throws SchedulerException

Schedules a job to be executed by a particular batch manager.

Parameters:

spec - The JobSpec to schedule for execution.

Returns:

Whether the job was successfully scheduled or not.

Throws:

SchedulerException - If there was any error scheduling the given JobSpec.

nodeAvailable

ResourceNode nodeAvailable(JobSpec spec)
                    throws SchedulerException

Returns the ResourceNode that is considered to be most available within our underlying set of resources for the given JobSpec.

Parameters:

spec - The JobSpec to find an available node for.

Returns:

The ResourceNode best suited to handle this JobSpec

Throws:

SchedulerException - If any error occurs.

getMonitor

Monitor getMonitor()

Returns:

The underlying Monitor used by this Scheduler.

getBatchmgr

Batchmgr getBatchmgr()

Returns:

The underlying Batchmgr used by this Scheduler.

getJobQueue

JobQueue getJobQueue()

Returns:

The underlying JobQueue used by this Scheduler.

getQueueManager

QueueManager getQueueManager()

Returns:

The underlying QueueManager used by this Scheduler.