ai.grakn.engine.tasks

Interface TaskManager

All Superinterfaces:

AutoCloseable

All Known Implementing Classes:

MultiQueueTaskManager, SingleQueueTaskManager, StandaloneTaskManager

public interface TaskManager
extends AutoCloseable

The base TaskManager interface.

Provides common methods for scheduling tasks for execution and stopping task execution.

Author:

Denis Lobanov, alexandraorth

Method Summary

Modifier and Type	Method and Description
void	addTask(TaskState taskState) Schedule a single shot/one off BackgroundTask to run after a @delay in milliseconds.
default TaskStateStorage	chooseStorage(GraknEngineConfig properties, ZookeeperConnection zookeeper)
void	stopTask(TaskId id) Stop a Scheduled, Paused or Running task.
TaskStateStorage	storage() Return the StateStorage instance that is used by this class.

Methods inherited from interface java.lang.AutoCloseable

close

Method Detail

addTask

void addTask(TaskState taskState)

Schedule a single shot/one off BackgroundTask to run after a @delay in milliseconds.

Parameters:

taskState - Task to execute

stopTask

void stopTask(TaskId id)

Stop a Scheduled, Paused or Running task. Task's .stop() method will be called to perform any cleanup and the task is killed afterwards.

Parameters:

id - ID of task to stop.

storage

TaskStateStorage storage()

Return the StateStorage instance that is used by this class.

Returns:

A StateStorage instance.

chooseStorage

default TaskStateStorage chooseStorage(GraknEngineConfig properties,
                                       ZookeeperConnection zookeeper)