ai.grakn.engine.bootup

Class StorageBootup

java.lang.Object

ai.grakn.engine.bootup.StorageBootup

public class StorageBootup
extends Object

A class responsible for managing the bootup-related process for the Storage component, including starting and stopping, performing status checks, and cleaning the data.

The PID file for the Storage component is managed internally by Cassandra and not by this class. This means that you will not find any code which creates or deletes the PID file for the Storage component.

Author:

Ganeshwara Herawan Hananda, Michele Orsi

Constructor Summary

Constructors

Constructor and Description
StorageBootup(BootupProcessExecutor bootupProcessExecutor, Path graknHome, Path graknPropertiesPath)

Method Summary

Modifier and Type	Method and Description
void	clean()
boolean	isRunning()
void	start() Attempt to start Storage and perform periodic polling until it is ready.
void	startIfNotRunning() Attempt to start Storage if it is not already running
void	status()
void	statusVerbose()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

StorageBootup

public StorageBootup(BootupProcessExecutor bootupProcessExecutor,
                     Path graknHome,
                     Path graknPropertiesPath)

Method Detail

startIfNotRunning

public void startIfNotRunning()

Attempt to start Storage if it is not already running

stop

public void stop()

status

public void status()

statusVerbose

public void statusVerbose()

clean

public void clean()

isRunning

public boolean isRunning()

start

public void start()

Attempt to start Storage and perform periodic polling until it is ready. The readiness check is performed with nodetool.

A BootupException will be thrown if Storage does not start after a timeout specified in the 'WAIT_INTERVAL_SECOND' field.

Throws:

BootupException