org.gridgain.grid.kernal.visor.cmd.tasks

Class VisorCacheCollectMetricsTask

java.lang.Object

org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask<GridBiTuple<Boolean,String>,Iterable<VisorCacheAggregatedMetrics>,Collection<VisorCacheMetrics>>

org.gridgain.grid.kernal.visor.cmd.tasks.VisorCacheCollectMetricsTask

All Implemented Interfaces:

Serializable, GridComputeTask<GridBiTuple<Set<UUID>,GridBiTuple<Boolean,String>>,Iterable<VisorCacheAggregatedMetrics>>

@GridInternal
public class VisorCacheCollectMetricsTask
extends VisorMultiNodeTask<GridBiTuple<Boolean,String>,Iterable<VisorCacheAggregatedMetrics>,Collection<VisorCacheMetrics>>

Task that cache metrics from all nodes.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask

taskArg

Constructor Summary

Constructors

Constructor and Description
VisorCacheCollectMetricsTask()

Method Summary

Methods

Modifier and Type	Method and Description
protected org.gridgain.grid.kernal.visor.cmd.tasks.VisorCacheCollectMetricsTask.VisorCacheMetricsJob	job(GridBiTuple<Boolean,String> arg)
Iterable<VisorCacheAggregatedMetrics>	reduce(List<GridComputeJobResult> results) Reduces (or aggregates) results received so far into one compound result to be returned to caller via GridComputeTaskFuture.get() method.

Methods inherited from class org.gridgain.grid.kernal.visor.cmd.VisorMultiNodeTask

map, result

Methods inherited from class java.lang.Object

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

Constructor Detail

VisorCacheCollectMetricsTask

public VisorCacheCollectMetricsTask()

Method Detail

job

protected org.gridgain.grid.kernal.visor.cmd.tasks.VisorCacheCollectMetricsTask.VisorCacheMetricsJob job(GridBiTuple<Boolean,String> arg)

Specified by:

job in class VisorMultiNodeTask<GridBiTuple<Boolean,String>,Iterable<VisorCacheAggregatedMetrics>,Collection<VisorCacheMetrics>>

Parameters:

arg - Task arg.

Returns:

New job.

reduce

@Nullable
public Iterable<VisorCacheAggregatedMetrics> reduce(List<GridComputeJobResult> results)
                                             throws GridException

Reduces (or aggregates) results received so far into one compound result to be returned to caller via GridComputeTaskFuture.get() method.

Note, that if some jobs did not succeed and could not be failed over then the list of results passed into this method will include the failed results. Otherwise, failed results will not be in the list.

Parameters:

results - Received results of broadcasted remote executions. Note that if task class has GridComputeTaskNoResultCache annotation, then this list will be empty.

Returns:

Grid job result constructed from results of remote executions.

Throws:

GridException - If reduction or results caused an error. This exception will be thrown out of GridComputeTaskFuture.get() method.