ai.grakn.engine.tasks.mock

Class MockBackgroundTask

java.lang.Object

ai.grakn.engine.tasks.BackgroundTask

ai.grakn.engine.tasks.mock.MockBackgroundTask

Direct Known Subclasses:

FailingMockTask, LongExecutionMockTask, ShortExecutionMockTask

public abstract class MockBackgroundTask
extends BackgroundTask

Main task Mock class- keeps track of completed and failed tasks

Author:

alexandraorth, Felix Chapman

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicBoolean	cancelled
protected Object	sync

Constructor Summary

Constructors

Constructor and Description
MockBackgroundTask()

Method Summary

Modifier and Type	Method and Description
static com.google.common.collect.ImmutableMultiset<TaskId>	cancelledTasks()
static void	clearTasks()
static com.google.common.collect.ImmutableMultiset<TaskId>	completedTasks()
protected abstract void	executeStartInner(TaskId id)
boolean	start() Called to start execution of the task, may be called on a newly scheduled or previously stopped task.
boolean	stop() Called to stop execution of the task, may be called on a running or paused task.
static void	whenTaskFinishes(java.util.function.Consumer<TaskId> onTaskFinish)
static void	whenTaskStarts(java.util.function.Consumer<TaskId> beforeTaskStarts)

Methods inherited from class ai.grakn.engine.tasks.BackgroundTask

configuration, engineConfiguration, factory, initialize, metricRegistry, postProcessor

Methods inherited from class java.lang.Object

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

Field Detail

cancelled

protected final AtomicBoolean cancelled

sync

protected final Object sync

Constructor Detail

MockBackgroundTask

public MockBackgroundTask()

Method Detail

completedTasks

public static com.google.common.collect.ImmutableMultiset<TaskId> completedTasks()

cancelledTasks

public static com.google.common.collect.ImmutableMultiset<TaskId> cancelledTasks()

whenTaskStarts

public static void whenTaskStarts(java.util.function.Consumer<TaskId> beforeTaskStarts)

whenTaskFinishes

public static void whenTaskFinishes(java.util.function.Consumer<TaskId> onTaskFinish)

clearTasks

public static void clearTasks()

start

public final boolean start()

Description copied from class: BackgroundTask

Called to start execution of the task, may be called on a newly scheduled or previously stopped task.

Specified by:

start in class BackgroundTask

Returns:

true if the task successfully completed, or false if it was stopped.

stop

public final boolean stop()

Description copied from class: BackgroundTask

Called to stop execution of the task, may be called on a running or paused task. Task should stop gracefully.

This implementation always throws UnsupportedOperationException.

Overrides:

stop in class BackgroundTask

Returns:

true if the task was successfully stopped, or false if it could not be stopped.

executeStartInner

protected abstract void executeStartInner(TaskId id)