Package org.elasticsearch.persistent
Class PersistentTasksClusterService
- java.lang.Object
-
- org.elasticsearch.common.component.AbstractComponent
-
- org.elasticsearch.persistent.PersistentTasksClusterService
-
- All Implemented Interfaces:
ClusterStateListener
public class PersistentTasksClusterService extends AbstractComponent implements ClusterStateListener
Component that runs only on the master node and is responsible for assigning running tasks to nodes
-
-
Field Summary
-
Fields inherited from class org.elasticsearch.common.component.AbstractComponent
logger
-
-
Constructor Summary
Constructors Constructor Description PersistentTasksClusterService(Settings settings, PersistentTasksExecutorRegistry registry, ClusterService clusterService)
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clusterChanged(ClusterChangedEvent event)
Called when cluster state changes.void
completePersistentTask(java.lang.String id, long allocationId, java.lang.Exception failure, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Restarts a record about a running persistent task from cluster state<Params extends PersistentTaskParams>
voidcreatePersistentTask(java.lang.String taskId, java.lang.String taskName, Params taskParams, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Creates a new persistent task on master nodestatic boolean
needsReassignment(PersistentTasksCustomMetaData.Assignment assignment, DiscoveryNodes nodes)
Returns true if the task is not assigned or is assigned to a non-existing nodevoid
removePersistentTask(java.lang.String id, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Removes the persistent taskvoid
updatePersistentTaskState(java.lang.String taskId, long taskAllocationId, PersistentTaskState taskState, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Update the state of a persistent task
-
-
-
Constructor Detail
-
PersistentTasksClusterService
public PersistentTasksClusterService(Settings settings, PersistentTasksExecutorRegistry registry, ClusterService clusterService)
-
-
Method Detail
-
createPersistentTask
public <Params extends PersistentTaskParams> void createPersistentTask(java.lang.String taskId, java.lang.String taskName, Params taskParams, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Creates a new persistent task on master node- Parameters:
taskId
- the task's idtaskName
- the task's nametaskParams
- the task's parameterslistener
- the listener that will be called when task is started
-
completePersistentTask
public void completePersistentTask(java.lang.String id, long allocationId, java.lang.Exception failure, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Restarts a record about a running persistent task from cluster state- Parameters:
id
- the id of the persistent taskallocationId
- the allocation id of the persistent taskfailure
- the reason for restarting the task or null if the task completed successfullylistener
- the listener that will be called when task is removed
-
removePersistentTask
public void removePersistentTask(java.lang.String id, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Removes the persistent task- Parameters:
id
- the id of a persistent tasklistener
- the listener that will be called when task is removed
-
updatePersistentTaskState
public void updatePersistentTaskState(java.lang.String taskId, long taskAllocationId, PersistentTaskState taskState, ActionListener<PersistentTasksCustomMetaData.PersistentTask<?>> listener)
Update the state of a persistent task- Parameters:
taskId
- the id of a persistent tasktaskAllocationId
- the expected allocation id of the persistent tasktaskState
- new statelistener
- the listener that will be called when task is removed
-
clusterChanged
public void clusterChanged(ClusterChangedEvent event)
Description copied from interface:ClusterStateListener
Called when cluster state changes.- Specified by:
clusterChanged
in interfaceClusterStateListener
-
needsReassignment
public static boolean needsReassignment(PersistentTasksCustomMetaData.Assignment assignment, DiscoveryNodes nodes)
Returns true if the task is not assigned or is assigned to a non-existing node
-
-