All Superinterfaces:

Runnable

All Known Implementing Classes:

LRUScheduler

public interface Scheduler

extends Runnable

Version:

$Revision$

A scheduler interface.

Author:

woollard, bfoster

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.

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.

Monitor getMonitor()

Returns:

The underlying Monitor used by this Scheduler.

Batchmgr getBatchmgr()

Returns:

The underlying Batchmgr used by this Scheduler.

JobQueue getJobQueue()

Returns:

The underlying JobQueue used by this Scheduler.

QueueManager getQueueManager()

Returns:

The underlying QueueManager used by this Scheduler.