Package org.apache.activemq.artemis.core.server.impl

Class InVMNodeManager

java.lang.Object

org.apache.activemq.artemis.core.server.NodeManager

org.apache.activemq.artemis.core.server.impl.FileBasedNodeManager

org.apache.activemq.artemis.core.server.impl.InVMNodeManager

All Implemented Interfaces:

ActiveMQComponent

public final class InVMNodeManager
extends FileBasedNodeManager

NodeManager used to run multiple servers in the same VM.

We use the InVMNodeManager instead of FileLockNodeManager when multiple servers are run inside the same VM and File Locks can not be shared in the same VM (it would cause a shared lock violation).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	InVMNodeManager.State

Nested classes/interfaces inherited from class org.apache.activemq.artemis.core.server.NodeManager

NodeManager.LockListener, NodeManager.NodeManagerException

Field Summary

Fields

Modifier and Type	Field	Description
long	failoverPause
InVMNodeManager.State	state

Fields inherited from class org.apache.activemq.artemis.core.server.impl.FileBasedNodeManager

activationSequenceChannel, channel, FIRST_TIME_START, SERVER_ACTIVATION_SEQUENCE_NAME, SERVER_LOCK_NAME, serverLockFile

Fields inherited from class org.apache.activemq.artemis.core.server.NodeManager

nodeActivationSequence, nodeIDGuard, NULL_NODE_ACTIVATION_SEQUENCE, replicatedBackup

Constructor Summary

Constructors

Constructor	Description
InVMNodeManager(boolean replicatedBackup)
InVMNodeManager(boolean replicatedBackup, File directory)

Method Summary

Modifier and Type	Method	Description
void	awaitLiveNode()
void	awaitLiveStatus()
void	crashLiveServer()
void	interrupt()
boolean	isAwaitingFailback()
boolean	isBackupLive()
void	pauseLiveServer()
SimpleString	readNodeId()
void	releaseBackup()
void	start()
void	startBackup()
ActivateCallback	startLiveNode()

Methods inherited from class org.apache.activemq.artemis.core.server.impl.FileBasedNodeManager

createNodeId, newFile, readNodeActivationSequence, setUpServerLockFile, stop, stopBackup, writeNodeActivationSequence

Methods inherited from class org.apache.activemq.artemis.core.server.NodeManager

checkStarted, getNodeActivationSequence, getNodeId, getUUID, isStarted, notifyLostLock, registerLockListener, setNodeActivationSequence, setNodeID, setUUID, unregisterLockListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.artemis.core.server.ActiveMQComponent

asyncStop

Field Detail

state

public volatile InVMNodeManager.State state

failoverPause

public long failoverPause

Constructor Detail

InVMNodeManager

public InVMNodeManager(boolean replicatedBackup)

InVMNodeManager

public InVMNodeManager(boolean replicatedBackup,
                       File directory)

Method Detail

start

public void start()
           throws Exception

Specified by:

start in interface ActiveMQComponent

Overrides:

start in class NodeManager

Throws:

Exception

awaitLiveNode

public void awaitLiveNode()
                   throws InterruptedException

Specified by:

awaitLiveNode in class NodeManager

Throws:

InterruptedException

awaitLiveStatus

public void awaitLiveStatus()
                     throws InterruptedException

Specified by:

awaitLiveStatus in class NodeManager

Throws:

InterruptedException

startBackup

public void startBackup()
                 throws InterruptedException

Specified by:

startBackup in class NodeManager

Throws:

InterruptedException

startLiveNode

public ActivateCallback startLiveNode()
                               throws InterruptedException

Specified by:

startLiveNode in class NodeManager

Throws:

InterruptedException

pauseLiveServer

public void pauseLiveServer()

Specified by:

pauseLiveServer in class NodeManager

crashLiveServer

public void crashLiveServer()

Specified by:

crashLiveServer in class NodeManager

isAwaitingFailback

public boolean isAwaitingFailback()

Specified by:

isAwaitingFailback in class NodeManager

isBackupLive

public boolean isBackupLive()

Specified by:

isBackupLive in class NodeManager

interrupt

public void interrupt()

Specified by:

interrupt in class NodeManager

releaseBackup

public void releaseBackup()

Specified by:

releaseBackup in class NodeManager

readNodeId

public SimpleString readNodeId()

Specified by:

readNodeId in class NodeManager