org.apache.activemq.store.kahadb

Class KahaDBStore.KahaDBMessageStore

java.lang.Object

org.apache.activemq.store.AbstractMessageStore

org.apache.activemq.store.kahadb.KahaDBStore.KahaDBMessageStore

All Implemented Interfaces:

Service, MessageStore

Enclosing class:

KahaDBStore

public class KahaDBStore.KahaDBMessageStore
extends AbstractMessageStore

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<org.apache.activemq.store.kahadb.KahaDBStore.AsyncJobKey,KahaDBStore.StoreTask>	asyncTaskMap
protected KahaDestination	dest

Fields inherited from class org.apache.activemq.store.AbstractMessageStore

destination, FUTURE, indexListener, messageStoreStatistics, prioritizedMessages

Constructor Summary

Constructors

Constructor and Description
KahaDBMessageStore(ActiveMQDestination destination)

Method Summary

Modifier and Type	Method and Description
protected void	acquireLocalAsyncLock()
void	addMessage(ConnectionContext context, Message message) Adds a message to the message store
ListenableFuture<Object>	asyncAddQueueMessage(ConnectionContext context, Message message) Adds a message to the message store
ActiveMQDestination	getDestination() The destination that the message store is holding messages for.
Message	getMessage(MessageId identity) Looks up a message using either the String messageID or the messageNumber.
boolean	isEmpty() flag to indicate if the store is empty
protected void	lockAsyncJobQueue()
void	recover(MessageRecoveryListener listener) Recover any messages to be delivered.
protected void	recoverMessageStoreStatistics()
void	recoverNextMessages(int maxReturned, MessageRecoveryListener listener)
protected int	recoverRolledBackAcks(org.apache.activemq.store.kahadb.MessageDatabase.StoredDestination sd, Transaction tx, int maxReturned, MessageRecoveryListener listener)
protected void	releaseLocalAsyncLock()
void	removeAllMessages(ConnectionContext context) Removes all the messages from the message store.
void	removeAsyncMessage(ConnectionContext context, MessageAck ack)
void	removeMessage(ConnectionContext context, MessageAck ack) Removes a message from the message store.
void	resetBatching() A hint to the Store to reset any batching state for the Destination
void	setBatch(MessageId identity) allow caching cursors to set the current batch offset when cache is exhausted
void	setMemoryUsage(MemoryUsage memoryUsage)
void	start()
void	stop()
String	toString()
protected void	unlockAsyncJobQueue()
void	updateMessage(Message message)

Methods inherited from class org.apache.activemq.store.AbstractMessageStore

addMessage, asyncAddQueueMessage, asyncAddTopicMessage, asyncAddTopicMessage, dispose, getIndexListener, getMessageCount, getMessageSize, getMessageStoreStatistics, isPrioritizedMessages, registerIndexListener, setPrioritizedMessages

Methods inherited from class java.lang.Object

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

Field Detail

asyncTaskMap

protected final Map<org.apache.activemq.store.kahadb.KahaDBStore.AsyncJobKey,KahaDBStore.StoreTask> asyncTaskMap

dest

protected KahaDestination dest

Constructor Detail

KahaDBMessageStore

public KahaDBMessageStore(ActiveMQDestination destination)

Method Detail

getDestination

public ActiveMQDestination getDestination()

Description copied from interface: MessageStore

The destination that the message store is holding messages for.

Specified by:

getDestination in interface MessageStore

Overrides:

getDestination in class AbstractMessageStore

Returns:

the destination

asyncAddQueueMessage

public ListenableFuture<Object> asyncAddQueueMessage(ConnectionContext context,
                                                     Message message)
                                              throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Specified by:

asyncAddQueueMessage in interface MessageStore

Overrides:

asyncAddQueueMessage in class AbstractMessageStore

Parameters:

context - context

Returns:

a Future to track when this is complete

Throws:

IOException

removeAsyncMessage

public void removeAsyncMessage(ConnectionContext context,
                               MessageAck ack)
                        throws IOException

Specified by:

removeAsyncMessage in interface MessageStore

Overrides:

removeAsyncMessage in class AbstractMessageStore

Throws:

IOException

addMessage

public void addMessage(ConnectionContext context,
                       Message message)
                throws IOException

Description copied from interface: MessageStore

Adds a message to the message store

Parameters:

context - context

Throws:

IOException

updateMessage

public void updateMessage(Message message)
                   throws IOException

Specified by:

updateMessage in interface MessageStore

Overrides:

updateMessage in class AbstractMessageStore

Throws:

IOException

removeMessage

public void removeMessage(ConnectionContext context,
                          MessageAck ack)
                   throws IOException

Description copied from interface: MessageStore

Removes a message from the message store.

ack - the ack request that cause the message to be removed. It conatins the identity which contains the messageID of the message that needs to be removed.

Throws:

IOException

removeAllMessages

public void removeAllMessages(ConnectionContext context)
                       throws IOException

Description copied from interface: MessageStore

Removes all the messages from the message store.

Throws:

IOException

getMessage

public Message getMessage(MessageId identity)
                   throws IOException

Description copied from interface: MessageStore

Looks up a message using either the String messageID or the messageNumber. Implementations are encouraged to fill in the missing key if its easy to do so.

Parameters:

identity - which contains either the messageID or the messageNumber

Returns:

the message or null if it does not exist

Throws:

IOException

isEmpty

public boolean isEmpty()
                throws IOException

Description copied from class: AbstractMessageStore

flag to indicate if the store is empty

Specified by:

isEmpty in interface MessageStore

Overrides:

isEmpty in class AbstractMessageStore

Returns:

true if the message count is 0

Throws:

IOException

recover

public void recover(MessageRecoveryListener listener)
             throws Exception

Description copied from interface: MessageStore

Recover any messages to be delivered.

Throws:

Exception

recoverNextMessages

public void recoverNextMessages(int maxReturned,
                                MessageRecoveryListener listener)
                         throws Exception

Throws:

Exception

recoverRolledBackAcks

protected int recoverRolledBackAcks(org.apache.activemq.store.kahadb.MessageDatabase.StoredDestination sd,
                                    Transaction tx,
                                    int maxReturned,
                                    MessageRecoveryListener listener)
                             throws Exception

Throws:

Exception

resetBatching

public void resetBatching()

Description copied from interface: MessageStore

A hint to the Store to reset any batching state for the Destination

setBatch

public void setBatch(MessageId identity)
              throws IOException

Description copied from interface: MessageStore

allow caching cursors to set the current batch offset when cache is exhausted

Specified by:

setBatch in interface MessageStore

Overrides:

setBatch in class AbstractMessageStore

Throws:

IOException

setMemoryUsage

public void setMemoryUsage(MemoryUsage memoryUsage)

Specified by:

setMemoryUsage in interface MessageStore

Overrides:

setMemoryUsage in class AbstractMessageStore

Parameters:

memoryUsage - The SystemUsage that is controlling the destination's memory usage.

start

public void start()
           throws Exception

Specified by:

start in interface Service

Overrides:

start in class AbstractMessageStore

Throws:

Exception

stop

public void stop()
          throws Exception

Specified by:

stop in interface Service

Overrides:

stop in class AbstractMessageStore

Throws:

Exception

lockAsyncJobQueue

protected void lockAsyncJobQueue()

unlockAsyncJobQueue

protected void unlockAsyncJobQueue()

acquireLocalAsyncLock

protected void acquireLocalAsyncLock()

releaseLocalAsyncLock

protected void releaseLocalAsyncLock()

toString

public String toString()

Overrides:

toString in class Object

recoverMessageStoreStatistics

protected void recoverMessageStoreStatistics()
                                      throws IOException

Overrides:

recoverMessageStoreStatistics in class AbstractMessageStore

Throws:

IOException