org.apache.activemq.store.journal
Class JournalPersistenceAdapter

java.lang.Object
  org.apache.activemq.store.journal.JournalPersistenceAdapter

All Implemented Interfaces:

org.apache.activeio.journal.JournalEventListener, BrokerServiceAware, org.apache.activemq.Service, PersistenceAdapter, UsageListener

public class JournalPersistenceAdapter
extends Object
implements PersistenceAdapter, org.apache.activeio.journal.JournalEventListener, UsageListener, BrokerServiceAware

An implementation of PersistenceAdapter designed for use with a Journal and then check pointing asynchronously on a timeout with some other long term persistent storage.

Field Summary

protected org.apache.activemq.thread.Scheduler

scheduler

Constructor Summary

JournalPersistenceAdapter()

JournalPersistenceAdapter(org.apache.activeio.journal.Journal journal, PersistenceAdapter longTermPersistence, org.apache.activemq.thread.TaskRunnerFactory taskRunnerFactory)

Method Summary

void	beginTransaction(ConnectionContext context)
void	checkpoint(boolean sync)
void	checkpoint(boolean sync, boolean fullCheckpoint) When we checkpoint we move all the journalled data to long term storage.
void	commitTransaction(ConnectionContext context)
MessageStore	createQueueMessageStore(org.apache.activemq.command.ActiveMQQueue destination)
protected IOException	createRecoveryFailedException(Exception e)
TopicMessageStore	createTopicMessageStore(org.apache.activemq.command.ActiveMQTopic destinationName)
TransactionStore	createTransactionStore()
protected IOException	createWriteException(org.apache.activemq.command.DataStructure packet, Exception e)
protected IOException	createWriteException(String command, Exception e)
void	deleteAllMessages()
boolean	doCheckpoint() This does the actual checkpoint.
Set<org.apache.activemq.command.ActiveMQDestination>	getDestinations()
File	getDirectory()
long	getLastMessageBrokerSequenceId()
long	getLastProducerSequenceId(org.apache.activemq.command.ProducerId id)
PersistenceAdapter	getLongTermPersistence()
int	getMaxCheckpointMessageAddSize()
int	getMaxCheckpointWorkers()
JournalTransactionStore	getTransactionStore()
SystemUsage	getUsageManager()
org.apache.activemq.wireformat.WireFormat	getWireFormat()
boolean	isUseExternalMessageReferences()
void	onUsageChanged(Usage usage, int oldPercentUsage, int newPercentUsage)
void	overflowNotification(org.apache.activeio.journal.RecordLocation safeLocation) The Journal give us a call back so that we can move old data out of the journal.
org.apache.activemq.command.DataStructure	readCommand(org.apache.activeio.journal.RecordLocation location)
void	removeQueueMessageStore(org.apache.activemq.command.ActiveMQQueue destination) Cleanup method to remove any state associated with the given destination
void	removeTopicMessageStore(org.apache.activemq.command.ActiveMQTopic destination) Cleanup method to remove any state associated with the given destination
void	rollbackTransaction(ConnectionContext context)
void	setBrokerName(String brokerName)
void	setBrokerService(BrokerService brokerService)
void	setDirectory(File dir)
void	setJournal(org.apache.activeio.journal.Journal journal)
void	setMaxCheckpointMessageAddSize(int maxCheckpointMessageAddSize)
void	setMaxCheckpointWorkers(int maxCheckpointWorkers)
void	setPersistenceAdapter(PersistenceAdapter longTermPersistence)
void	setTaskRunnerFactory(org.apache.activemq.thread.TaskRunnerFactory taskRunnerFactory)
void	setUsageManager(SystemUsage usageManager)
void	setUseExternalMessageReferences(boolean enable)
long	size()
void	start()
void	stop()
ByteSequence	toByteSequence(org.apache.activeio.packet.Packet packet)
org.apache.activeio.packet.Packet	toPacket(ByteSequence sequence)
String	toString()
org.apache.activeio.journal.RecordLocation	writeCommand(org.apache.activemq.command.DataStructure command, boolean sync)

Methods inherited from class java.lang.Object

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

Field Detail

scheduler

protected org.apache.activemq.thread.Scheduler scheduler

Constructor Detail

JournalPersistenceAdapter

public JournalPersistenceAdapter()

JournalPersistenceAdapter

public JournalPersistenceAdapter(org.apache.activeio.journal.Journal journal,
                                 PersistenceAdapter longTermPersistence,
                                 org.apache.activemq.thread.TaskRunnerFactory taskRunnerFactory)
                          throws IOException

Throws:

IOException

Method Detail

setTaskRunnerFactory

public void setTaskRunnerFactory(org.apache.activemq.thread.TaskRunnerFactory taskRunnerFactory)

setJournal

public void setJournal(org.apache.activeio.journal.Journal journal)

setPersistenceAdapter

public void setPersistenceAdapter(PersistenceAdapter longTermPersistence)

setUsageManager

public void setUsageManager(SystemUsage usageManager)

Specified by:

setUsageManager in interface PersistenceAdapter

Parameters:

usageManager - The UsageManager that is controlling the destination's memory usage.

getDestinations

public Set<org.apache.activemq.command.ActiveMQDestination> getDestinations()

Specified by:

getDestinations in interface PersistenceAdapter

createQueueMessageStore

public MessageStore createQueueMessageStore(org.apache.activemq.command.ActiveMQQueue destination)
                                     throws IOException

Specified by:

createQueueMessageStore in interface PersistenceAdapter

Throws:

IOException

createTopicMessageStore

public TopicMessageStore createTopicMessageStore(org.apache.activemq.command.ActiveMQTopic destinationName)
                                          throws IOException

Specified by:

createTopicMessageStore in interface PersistenceAdapter

Throws:

IOException

removeQueueMessageStore

public void removeQueueMessageStore(org.apache.activemq.command.ActiveMQQueue destination)

Cleanup method to remove any state associated with the given destination

Specified by:

removeQueueMessageStore in interface PersistenceAdapter

Parameters:

destination - Destination to forget

removeTopicMessageStore

public void removeTopicMessageStore(org.apache.activemq.command.ActiveMQTopic destination)

Cleanup method to remove any state associated with the given destination

Specified by:

removeTopicMessageStore in interface PersistenceAdapter

Parameters:

destination - Destination to forget

createTransactionStore

public TransactionStore createTransactionStore()
                                        throws IOException

Specified by:

createTransactionStore in interface PersistenceAdapter

Throws:

IOException

getLastMessageBrokerSequenceId

public long getLastMessageBrokerSequenceId()
                                    throws IOException

Specified by:

getLastMessageBrokerSequenceId in interface PersistenceAdapter

Throws:

IOException

beginTransaction

public void beginTransaction(ConnectionContext context)
                      throws IOException

Specified by:

beginTransaction in interface PersistenceAdapter

Throws:

IOException

commitTransaction

public void commitTransaction(ConnectionContext context)
                       throws IOException

Specified by:

commitTransaction in interface PersistenceAdapter

Throws:

IOException

rollbackTransaction

public void rollbackTransaction(ConnectionContext context)
                         throws IOException

Specified by:

rollbackTransaction in interface PersistenceAdapter

Throws:

IOException

start

public void start()
           throws Exception

Specified by:

start in interface org.apache.activemq.Service

Throws:

Exception

stop

public void stop()
          throws Exception

Specified by:

stop in interface org.apache.activemq.Service

Throws:

Exception

getLongTermPersistence

public PersistenceAdapter getLongTermPersistence()

getWireFormat

public org.apache.activemq.wireformat.WireFormat getWireFormat()

Returns:

Returns the wireFormat.

overflowNotification

public void overflowNotification(org.apache.activeio.journal.RecordLocation safeLocation)

The Journal give us a call back so that we can move old data out of the journal. Taking a checkpoint does this for us.

Specified by:

overflowNotification in interface org.apache.activeio.journal.JournalEventListener

See Also:

org.apache.activemq.journal.JournalEventListener#overflowNotification(org.apache.activemq.journal.RecordLocation)

checkpoint

public void checkpoint(boolean sync,
                       boolean fullCheckpoint)

When we checkpoint we move all the journalled data to long term storage.

checkpoint

public void checkpoint(boolean sync)

Specified by:

checkpoint in interface PersistenceAdapter

doCheckpoint

public boolean doCheckpoint()

This does the actual checkpoint.

Returns:

readCommand

public org.apache.activemq.command.DataStructure readCommand(org.apache.activeio.journal.RecordLocation location)
                                                      throws IOException

Parameters:

location -

Returns:

Throws:

IOException

createWriteException

protected IOException createWriteException(org.apache.activemq.command.DataStructure packet,
                                           Exception e)

createWriteException

protected IOException createWriteException(String command,
                                           Exception e)

createRecoveryFailedException

protected IOException createRecoveryFailedException(Exception e)

writeCommand

public org.apache.activeio.journal.RecordLocation writeCommand(org.apache.activemq.command.DataStructure command,
                                                               boolean sync)
                                                        throws IOException

Parameters:

command -

sync -

Returns:

Throws:

IOException

onUsageChanged

public void onUsageChanged(Usage usage,
                           int oldPercentUsage,
                           int newPercentUsage)

Specified by:

onUsageChanged in interface UsageListener

getTransactionStore

public JournalTransactionStore getTransactionStore()

deleteAllMessages

public void deleteAllMessages()
                       throws IOException

Specified by:

deleteAllMessages in interface PersistenceAdapter

Throws:

IOException

getUsageManager

public SystemUsage getUsageManager()

getMaxCheckpointMessageAddSize

public int getMaxCheckpointMessageAddSize()

setMaxCheckpointMessageAddSize

public void setMaxCheckpointMessageAddSize(int maxCheckpointMessageAddSize)

getMaxCheckpointWorkers

public int getMaxCheckpointWorkers()

setMaxCheckpointWorkers

public void setMaxCheckpointWorkers(int maxCheckpointWorkers)

isUseExternalMessageReferences

public boolean isUseExternalMessageReferences()

setUseExternalMessageReferences

public void setUseExternalMessageReferences(boolean enable)

toPacket

public org.apache.activeio.packet.Packet toPacket(ByteSequence sequence)

toByteSequence

public ByteSequence toByteSequence(org.apache.activeio.packet.Packet packet)

setBrokerName

public void setBrokerName(String brokerName)

Specified by:

setBrokerName in interface PersistenceAdapter

toString

public String toString()

Overrides:

toString in class Object

setDirectory

public void setDirectory(File dir)

Specified by:

setDirectory in interface PersistenceAdapter

getDirectory

public File getDirectory()

Specified by:

getDirectory in interface PersistenceAdapter

size

public long size()

Specified by:

size in interface PersistenceAdapter

setBrokerService

public void setBrokerService(BrokerService brokerService)

Specified by:

setBrokerService in interface BrokerServiceAware

getLastProducerSequenceId

public long getLastProducerSequenceId(org.apache.activemq.command.ProducerId id)

Specified by:

getLastProducerSequenceId in interface PersistenceAdapter