org.eclipse.smila.workermanager
Class ScaleUpControl

java.lang.Object
  org.eclipse.smila.workermanager.ScaleUpControl

public class ScaleUpControl
extends java.lang.Object

Helper class for handling (java) worker scale up.

Constructor Summary

ScaleUpControl()
instance with default scale up limits.

ScaleUpControl(ClusterConfigService clusterService)

Method Summary

boolean	canGetTask(java.lang.String workerName, boolean isRunAlways)
void	decTaskCounter(java.lang.String worker)
int	getScaleUpLimit(java.lang.String worker)
int	getTaskCounter(java.lang.String worker)
void	incTaskCounter(java.lang.String worker)
void	setScaleUpLimit(java.lang.String worker, java.lang.Long scaleUp)

Methods inherited from class java.lang.Object

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

Constructor Detail

ScaleUpControl

public ScaleUpControl()

instance with default scale up limits.

ScaleUpControl

public ScaleUpControl(ClusterConfigService clusterService)

Parameters:

clusterService - holds scale up configuration for each worker

Method Detail

canGetTask

public boolean canGetTask(java.lang.String workerName,
                          boolean isRunAlways)

Returns:

'true' if this worker is allowed to get another task, 'false' otherwise.

incTaskCounter

public void incTaskCounter(java.lang.String worker)

Parameters:

worker - the worker for which to increment the task counter.

decTaskCounter

public void decTaskCounter(java.lang.String worker)

Parameters:

worker - the worker for which to decrement the task counter.

getTaskCounter

public int getTaskCounter(java.lang.String worker)

Parameters:

worker - the worker for which to get the counter.

Returns:

a counter of currently processed tasks

getScaleUpLimit

public int getScaleUpLimit(java.lang.String worker)

Parameters:

worker - the worker for which to get the limit.

Returns:

scaleUp limit for this worker. defaults to 1 if no value is set.

setScaleUpLimit

public void setScaleUpLimit(java.lang.String worker,
                            java.lang.Long scaleUp)

Parameters:

worker - a worker

scaleUp - max scale up limit for the worker.