org.apache.activemq.store.kahadb
Class TempKahaDBStore

java.lang.Object
  org.apache.activemq.store.kahadb.TempMessageDatabase
      org.apache.activemq.store.kahadb.TempKahaDBStore

All Implemented Interfaces:

Service, PersistenceAdapter

public class TempKahaDBStore
extends TempMessageDatabase
implements PersistenceAdapter

Nested Class Summary

class

TempKahaDBStore.KahaDBMessageStore

Nested classes/interfaces inherited from class org.apache.activemq.store.kahadb.TempMessageDatabase

TempMessageDatabase.MessageKeysMarshaller, TempMessageDatabase.StoredDestinationMarshaller

Field Summary

Fields inherited from class org.apache.activemq.store.kahadb.TempMessageDatabase

CLOSED_STATE, destinations, directory, indexMutex, inflightTransactions, OPEN_STATE, opened, pageFile, preparedTransactions, started

Constructor Summary

TempKahaDBStore()

Method Summary

void	beginTransaction(ConnectionContext context) This method starts a transaction on the persistent storage - which is nothing to do with JMS or XA transactions - its purely a mechanism to perform multiple writes to a persistent store in 1 transaction as a performance optimization.
void	checkpoint(boolean sync) checkpoint any
void	commitTransaction(ConnectionContext context) Commit a persistence transaction
MessageStore	createQueueMessageStore(ActiveMQQueue destination) Factory method to create a new queue message store with the given destination name
TopicMessageStore	createTopicMessageStore(ActiveMQTopic destination) Factory method to create a new topic message store with the given destination name
TransactionStore	createTransactionStore() Factory method to create a new persistent prepared transaction store for XA recovery
void	deleteAllMessages() Delete's all the messages in the persistent store.
Set<ActiveMQDestination>	getDestinations() Returns a set of all the ActiveMQDestination objects that the persistence store is aware exist.
long	getLastMessageBrokerSequenceId()
long	getLastProducerSequenceId(ProducerId id) return the last stored producer sequenceId for this producer Id used to suppress duplicate sends on failover reconnect at the transport when a reconnect occurs
void	removeQueueMessageStore(ActiveMQQueue destination) Cleanup method to remove any state associated with the given destination.
void	removeTopicMessageStore(ActiveMQTopic destination) Cleanup method to remove any state associated with the given destination This method does not stop the message store (it might not be cached).
void	rollbackTransaction(ConnectionContext context) Rollback a persistence transaction
void	setBrokerName(String brokerName) Set the name of the broker using the adapter
void	setUsageManager(SystemUsage usageManager)
long	size() A hint to return the size of the store on disk

Methods inherited from class org.apache.activemq.store.kahadb.TempMessageDatabase

close, getDirectory, getIndexWriteBatchSize, getJournalFilesBeingReplicated, getPageFile, getStoredDestination, load, open, process, process, processAdd, processCommit, processPrepare, processRemove, processRollback, setDirectory, setEnableIndexWriteAsync, setIndexWriteBatchSize, start, stop, unload

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.store.PersistenceAdapter

getDirectory, setDirectory

Methods inherited from interface org.apache.activemq.Service

start, stop

Constructor Detail

TempKahaDBStore

public TempKahaDBStore()

Method Detail

setBrokerName

public void setBrokerName(String brokerName)

Description copied from interface: PersistenceAdapter

Set the name of the broker using the adapter

Specified by:

setBrokerName in interface PersistenceAdapter

setUsageManager

public void setUsageManager(SystemUsage usageManager)

Specified by:

setUsageManager in interface PersistenceAdapter

Parameters:

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

createTransactionStore

public TransactionStore createTransactionStore()
                                        throws IOException

Description copied from interface: PersistenceAdapter

Factory method to create a new persistent prepared transaction store for XA recovery

Specified by:

createTransactionStore in interface PersistenceAdapter

Returns:

transaction store

Throws:

IOException

createQueueMessageStore

public MessageStore createQueueMessageStore(ActiveMQQueue destination)
                                     throws IOException

Description copied from interface: PersistenceAdapter

Factory method to create a new queue message store with the given destination name

Specified by:

createQueueMessageStore in interface PersistenceAdapter

Returns:

the message store

Throws:

IOException

createTopicMessageStore

public TopicMessageStore createTopicMessageStore(ActiveMQTopic destination)
                                          throws IOException

Description copied from interface: PersistenceAdapter

Factory method to create a new topic message store with the given destination name

Specified by:

createTopicMessageStore in interface PersistenceAdapter

Returns:

the topic message store

Throws:

IOException

removeQueueMessageStore

public void removeQueueMessageStore(ActiveMQQueue destination)

Cleanup method to remove any state associated with the given destination. This method does not stop the message store (it might not be cached).

Specified by:

removeQueueMessageStore in interface PersistenceAdapter

Parameters:

destination - Destination to forget

removeTopicMessageStore

public void removeTopicMessageStore(ActiveMQTopic destination)

Cleanup method to remove any state associated with the given destination This method does not stop the message store (it might not be cached).

Specified by:

removeTopicMessageStore in interface PersistenceAdapter

Parameters:

destination - Destination to forget

deleteAllMessages

public void deleteAllMessages()
                       throws IOException

Description copied from interface: PersistenceAdapter

Delete's all the messages in the persistent store.

Specified by:

deleteAllMessages in interface PersistenceAdapter

Throws:

IOException

getDestinations

public Set<ActiveMQDestination> getDestinations()

Description copied from interface: PersistenceAdapter

Returns a set of all the ActiveMQDestination objects that the persistence store is aware exist.

Specified by:

getDestinations in interface PersistenceAdapter

Returns:

active destinations

getLastMessageBrokerSequenceId

public long getLastMessageBrokerSequenceId()
                                    throws IOException

Specified by:

getLastMessageBrokerSequenceId in interface PersistenceAdapter

Returns:

last broker sequence

Throws:

IOException

size

public long size()

Description copied from interface: PersistenceAdapter

A hint to return the size of the store on disk

Specified by:

size in interface PersistenceAdapter

Returns:

disk space used in bytes of 0 if not implemented

beginTransaction

public void beginTransaction(ConnectionContext context)
                      throws IOException

Description copied from interface: PersistenceAdapter

This method starts a transaction on the persistent storage - which is nothing to do with JMS or XA transactions - its purely a mechanism to perform multiple writes to a persistent store in 1 transaction as a performance optimization.

Typically one transaction will require one disk synchronization point and so for real high performance its usually faster to perform many writes within the same transaction to minimize latency caused by disk synchronization. This is especially true when using tools like Berkeley Db or embedded JDBC servers.

Specified by:

beginTransaction in interface PersistenceAdapter

Throws:

IOException

commitTransaction

public void commitTransaction(ConnectionContext context)
                       throws IOException

Description copied from interface: PersistenceAdapter

Commit a persistence transaction

Specified by:

commitTransaction in interface PersistenceAdapter

Throws:

IOException

See Also:

PersistenceAdapter.beginTransaction(ConnectionContext context)

rollbackTransaction

public void rollbackTransaction(ConnectionContext context)
                         throws IOException

Description copied from interface: PersistenceAdapter

Rollback a persistence transaction

Specified by:

rollbackTransaction in interface PersistenceAdapter

Throws:

IOException

See Also:

PersistenceAdapter.beginTransaction(ConnectionContext context)

checkpoint

public void checkpoint(boolean sync)
                throws IOException

Description copied from interface: PersistenceAdapter

checkpoint any

Specified by:

checkpoint in interface PersistenceAdapter

Throws:

IOException

getLastProducerSequenceId

public long getLastProducerSequenceId(ProducerId id)

Description copied from interface: PersistenceAdapter

return the last stored producer sequenceId for this producer Id used to suppress duplicate sends on failover reconnect at the transport when a reconnect occurs

Specified by:

getLastProducerSequenceId in interface PersistenceAdapter

Parameters:

id - the producerId to find a sequenceId for

Returns:

the last stored sequence id or -1 if no suppression needed