Package org.apache.ignite.internal.processors.cache.persistence.defragmentation.maintenance

Class DefragmentationWorkflowCallback

java.lang.Object

org.apache.ignite.internal.processors.cache.persistence.defragmentation.maintenance.DefragmentationWorkflowCallback

All Implemented Interfaces:

MaintenanceWorkflowCallback

public class DefragmentationWorkflowCallback
extends Object
implements MaintenanceWorkflowCallback

Defragmentation specific callback for maintenance mode.

Constructor Summary

Constructors

Constructor	Description
DefragmentationWorkflowCallback(Function<Class<?>,IgniteLogger> logProvider, CachePartitionDefragmentationManager defrgMgr, FailureProcessor failureProc)

Method Summary

Modifier and Type	Method	Description
@NotNull List<MaintenanceAction<?>>	allActions()	Supplies list of MaintenanceActions that user can call to fix maintenance situation for the component or get information about ongoing actions.
@Nullable MaintenanceAction<Boolean>	automaticAction()	Component can provide optional MaintenanceAction that will be executed automatically by MaintenanceRegistry when node enters maintenance mode.
boolean	shouldProceedWithMaintenance()	Called by MaintenanceRegistry and enables it to check if maintenance is still needed for component that provided this callback.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefragmentationWorkflowCallback

public DefragmentationWorkflowCallback(Function<Class<?>,IgniteLogger> logProvider,
                                       CachePartitionDefragmentationManager defrgMgr,
                                       FailureProcessor failureProc)

Parameters:

logProvider - Logger provider.

defrgMgr - Defragmentation manager.

failureProc - Failure processor.

Method Detail

shouldProceedWithMaintenance

public boolean shouldProceedWithMaintenance()

Called by MaintenanceRegistry and enables it to check if maintenance is still needed for component that provided this callback. User may fix maintenance situation by hand when node was down thus before going to maintenance mode we should be able to check if it is still necessary.

Specified by:

shouldProceedWithMaintenance in interface MaintenanceWorkflowCallback

Returns:

True if maintenance is still needed for the component.

allActions

@NotNull
public @NotNull List<MaintenanceAction<?>> allActions()

Supplies list of MaintenanceActions that user can call to fix maintenance situation for the component or get information about ongoing actions. Should not be null or empty.

Specified by:

allActions in interface MaintenanceWorkflowCallback

Returns:

Not null and non-empty List of MaintenanceAction.

automaticAction

@Nullable
public @Nullable MaintenanceAction<Boolean> automaticAction()

Component can provide optional MaintenanceAction that will be executed automatically by MaintenanceRegistry when node enters maintenance mode. If no automatic actions are provided MaintenanceRegistry will wait for user to trigger MaintenanceAction with logic to fix the maintenance situation.

Specified by:

automaticAction in interface MaintenanceWorkflowCallback

Returns:

MaintenanceAction for automatic execution or null if maintenance situation should not be fixed automatically.