ai.grakn.engine.backgroundtasks.distributed

Class TaskRunner

java.lang.Object

ai.grakn.engine.backgroundtasks.distributed.TaskRunner

All Implemented Interfaces:

AutoCloseable, Runnable

public class TaskRunner
extends Object
implements Runnable, AutoCloseable

Picks up tasks from the work queue, runs them and marks them as completed or failed.

Runs tasks in a pool. The size of this pool is configurable in the properties file. Controls marking the state of running TaskRunner in Zookeeper.

Author:

Denis Lobanov, alexandraorth

Constructor Summary

Constructors

Constructor and Description
TaskRunner(TaskStateStorage storage, ZookeeperConnection connection)

Method Summary

Modifier and Type	Method and Description
void	close() Stop the main loop, causing run() to exit.
void	run() Start the main loop, this will block until a call to stop().

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskRunner

public TaskRunner(TaskStateStorage storage,
                  ZookeeperConnection connection)

Method Detail

run

public void run()

Start the main loop, this will block until a call to stop().

Specified by:

run in interface Runnable

close

public void close()

Stop the main loop, causing run() to exit. noThrow() functions used here so that if an error occurs during execution of a certain step, the subsequent stops continue to execute.

Specified by:

close in interface AutoCloseable