Package uk.co.ractf.polaris.controller.scheduler

Class GenericSchedulingAlgorithm

java.lang.Object

uk.co.ractf.polaris.controller.scheduler.GenericSchedulingAlgorithm

All Implemented Interfaces:

SchedulingAlgorithm

public class GenericSchedulingAlgorithm
extends java.lang.Object
implements SchedulingAlgorithm

The default implementation of SchedulingAlgorithm. The scheduler places Tasks onto nodes by running a series of Plugins to filter and score the nodes to find the best place to run instances of the task.

This is done in the following stages: - Checking the cluster meets the conditions required to run the task - Filtering which nodes can run the task - Scoring the nodes

In the future, this might be extended to include things such as evicting lower priority tasks.

Constructor Summary

Constructors

Constructor	Description
GenericSchedulingAlgorithm(ClusterState clusterState, java.util.Set<ClusterPredicatePlugin> clusterPredicatePlugins, java.util.Set<FilterPlugin> filterPlugins, java.util.Set<ScorePlugin> scorePlugins)

Method Summary

Modifier and Type	Method	Description
ScheduleResult	schedule(uk.co.ractf.polaris.api.task.Task task)	Schedule a Task onto the cluster

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericSchedulingAlgorithm

@Inject
public GenericSchedulingAlgorithm(ClusterState clusterState,
                                  java.util.Set<ClusterPredicatePlugin> clusterPredicatePlugins,
                                  java.util.Set<FilterPlugin> filterPlugins,
                                  java.util.Set<ScorePlugin> scorePlugins)

Method Detail

schedule

public ScheduleResult schedule(uk.co.ractf.polaris.api.task.Task task)

Description copied from interface: SchedulingAlgorithm

Schedule a Task onto the cluster

Specified by:

schedule in interface SchedulingAlgorithm

Parameters:

task - the task to schedule

Returns:

the node to run the task on