org.apache.activemq.store.kahadb

Class KahaDBStore

java.lang.Object

org.apache.activemq.util.ServiceSupport

org.apache.activemq.store.kahadb.MessageDatabase

org.apache.activemq.store.kahadb.KahaDBStore

All Implemented Interfaces:

BrokerServiceAware, Service, PersistenceAdapter

public class KahaDBStore
extends MessageDatabase
implements PersistenceAdapter

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	KahaDBStore.KahaDBMessageStore
static interface	KahaDBStore.StoreTask
class	KahaDBStore.StoreTaskExecutor

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

MessageDatabase.LastAckMarshaller, MessageDatabase.MessageKeysMarshaller, MessageDatabase.Metadata, MessageDatabase.StoredDestinationMarshaller

Field Summary

Fields

Modifier and Type	Field and Description
protected List<Map<org.apache.activemq.store.kahadb.KahaDBStore.AsyncJobKey,KahaDBStore.StoreTask>>	asyncQueueMaps
protected List<Map<org.apache.activemq.store.kahadb.KahaDBStore.AsyncJobKey,KahaDBStore.StoreTask>>	asyncTopicMaps
static int	cancelledTaskModMetric
static String	PROPERTY_ASYNC_EXECUTOR_MAX_THREADS
static String	PROPERTY_CANCELED_TASK_MOD_METRIC
protected ExecutorService	queueExecutor
protected ExecutorService	topicExecutor

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

ackedAndPrepared, archiveDataLogs, brokerService, checkpointThread, DEFAULT_DIRECTORY, deleteAllMessages, directory, directoryArchive, enableJournalDiskSyncs, failIfDatabaseIsLocked, forceRecoverIndex, indexDirectory, indexLock, journal, journalSize, LOG_SLOW_ACCESS_TIME, metadata, metadataMarshaller, opened, pageFile, preparedTransactions, PROPERTY_LOG_SLOW_ACCESS_TIME, rolledBackAcks, storeCache, storedDestinations, UNMATCHED

Constructor Summary

Constructors

Constructor and Description
KahaDBStore()

Method Summary

Modifier and Type	Method and Description
protected void	addQueueTask(KahaDBStore.KahaDBMessageStore store, org.apache.activemq.store.kahadb.KahaDBStore.StoreQueueTask task)
protected void	addTopicTask(org.apache.activemq.store.kahadb.KahaDBStore.KahaDBTopicMessageStore store, org.apache.activemq.store.kahadb.KahaDBStore.StoreTopicTask task)
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
protected void	configureMetadata()
JobSchedulerStore	createJobSchedulerStore() Creates and returns a new Job Scheduler store instance.
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.
void	doStart()
void	doStop(ServiceStopper stopper)
Set<ActiveMQDestination>	getDestinations() Returns a set of all the ActiveMQDestination objects that the persistence store is aware exist.
boolean	getForceRecoverIndex()
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
int	getMaxAsyncJobs()
TransactionIdTransformer	getTransactionIdTransformer()
SystemUsage	getUsageManager()
boolean	isConcurrentStoreAndDispatchQueues()
boolean	isConcurrentStoreAndDispatchTopics()
boolean	isConcurrentStoreAndDispatchTransactions()
void	removeQueueMessageStore(ActiveMQQueue destination) Cleanup method to remove any state associated with the given destination.
protected org.apache.activemq.store.kahadb.KahaDBStore.StoreQueueTask	removeQueueTask(KahaDBStore.KahaDBMessageStore store, MessageId id)
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).
protected org.apache.activemq.store.kahadb.KahaDBStore.StoreTopicTask	removeTopicTask(org.apache.activemq.store.kahadb.KahaDBStore.KahaDBTopicMessageStore store, MessageId id)
void	rollbackTransaction(ConnectionContext context) Rollback a persistence transaction
void	setBrokerName(String brokerName) Set the name of the broker using the adapter
void	setConcurrentStoreAndDispatchQueues(boolean concurrentStoreAndDispatch)
void	setConcurrentStoreAndDispatchTopics(boolean concurrentStoreAndDispatch)
void	setForceRecoverIndex(boolean forceRecoverIndex)
void	setMaxAsyncJobs(int maxAsyncJobs)
void	setTransactionIdTransformer(TransactionIdTransformer transactionIdTransformer)
void	setUsageManager(SystemUsage usageManager)
long	size() A hint to return the size of the store on disk
String	toString()

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

checkpointCleanup, clearStoreStats, close, decrementAndSubSizeToStoreStat, decrementAndSubSizeToStoreStat, forgetRecoveredAcks, getCheckpointInterval, getCleanupInterval, getDirectory, getDirectoryArchive, getExistingStoredDestination, getFailoverProducersAuditDepth, getIndexCacheSize, getIndexDirectory, getIndexLFUEvictionFactor, getIndexWriteBatchSize, getInProgressTxLocationRange, getJournal, getJournalFilesBeingReplicated, getJournalMaxFileLength, getJournalMaxWriteBatchSize, getLastAck, getLastUpdatePosition, getMaxFailoverProducersToTrack, getPageFile, getPreallocationScope, getPreallocationStrategy, getStoredDestination, getStoredMessageCount, getStoredMessageSize, getStoreStats, getTransactions, incrementalRecover, incrementAndAddSizeToStoreStat, incrementAndAddSizeToStoreStat, isArchiveCorruptedIndex, isArchiveDataLogs, isCheckForCorruptJournalFiles, isChecksumJournalFiles, isDeleteAllMessages, isEnableIndexDiskSyncs, isEnableIndexPageCaching, isEnableIndexRecoveryFile, isEnableJournalDiskSyncs, isFailIfDatabaseIsLocked, isIgnoreMissingJournalfiles, isUseIndexLFRUEviction, key, load, load, matchType, open, process, process, process, process, process, process, process, process, processLocation, recoverIndex, setArchiveCorruptedIndex, setArchiveDataLogs, setBrokerService, setCheckForCorruptJournalFiles, setCheckpointInterval, setChecksumJournalFiles, setCleanupInterval, setDeleteAllMessages, setDirectory, setDirectoryArchive, setEnableIndexDiskSyncs, setEnableIndexPageCaching, setEnableIndexRecoveryFile, setEnableIndexWriteAsync, setEnableJournalDiskSyncs, setFailIfDatabaseIsLocked, setFailoverProducersAuditDepth, setIgnoreMissingJournalfiles, setIndexCacheSize, setIndexDirectory, setIndexLFUEvictionFactor, setIndexWriteBatchSize, setJournalMaxFileLength, setJournalMaxWriteBatchSize, setMaxFailoverProducersToTrack, setPreallocationScope, setPreallocationStrategy, setUseIndexLFRUEviction, store, store, store, store, toByteSequence, trackRecoveredAcks, unload

Methods inherited from class org.apache.activemq.util.ServiceSupport

addServiceListener, dispose, isStarted, isStopped, isStopping, postStop, preStart, removeServiceListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.store.PersistenceAdapter

getDirectory, setDirectory

Methods inherited from interface org.apache.activemq.Service

start, stop

Field Detail

PROPERTY_CANCELED_TASK_MOD_METRIC

public static final String PROPERTY_CANCELED_TASK_MOD_METRIC

See Also:

Constant Field Values

cancelledTaskModMetric

public static final int cancelledTaskModMetric

PROPERTY_ASYNC_EXECUTOR_MAX_THREADS

public static final String PROPERTY_ASYNC_EXECUTOR_MAX_THREADS

See Also:

Constant Field Values

queueExecutor

protected ExecutorService queueExecutor

topicExecutor

protected ExecutorService topicExecutor

asyncQueueMaps

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

asyncTopicMaps

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

Constructor Detail

KahaDBStore

public KahaDBStore()

Method Detail

toString

public String toString()

Overrides:

toString in class Object

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.

getUsageManager

public SystemUsage getUsageManager()

isConcurrentStoreAndDispatchQueues

public boolean isConcurrentStoreAndDispatchQueues()

Returns:

the concurrentStoreAndDispatch

setConcurrentStoreAndDispatchQueues

public void setConcurrentStoreAndDispatchQueues(boolean concurrentStoreAndDispatch)

Parameters:

concurrentStoreAndDispatch - the concurrentStoreAndDispatch to set

isConcurrentStoreAndDispatchTopics

public boolean isConcurrentStoreAndDispatchTopics()

Returns:

the concurrentStoreAndDispatch

setConcurrentStoreAndDispatchTopics

public void setConcurrentStoreAndDispatchTopics(boolean concurrentStoreAndDispatch)

Parameters:

concurrentStoreAndDispatch - the concurrentStoreAndDispatch to set

isConcurrentStoreAndDispatchTransactions

public boolean isConcurrentStoreAndDispatchTransactions()

getMaxAsyncJobs

public int getMaxAsyncJobs()

Returns:

the maxAsyncJobs

setMaxAsyncJobs

public void setMaxAsyncJobs(int maxAsyncJobs)

Parameters:

maxAsyncJobs - the maxAsyncJobs to set

configureMetadata

protected void configureMetadata()

Specified by:

configureMetadata in class MessageDatabase

doStart

public void doStart()
             throws Exception

Overrides:

doStart in class MessageDatabase

Throws:

Exception

doStop

public void doStop(ServiceStopper stopper)
            throws Exception

Overrides:

doStop in class MessageDatabase

Throws:

Exception

removeQueueTask

protected org.apache.activemq.store.kahadb.KahaDBStore.StoreQueueTask removeQueueTask(KahaDBStore.KahaDBMessageStore store,
                                                                                      MessageId id)

addQueueTask

protected void addQueueTask(KahaDBStore.KahaDBMessageStore store,
                            org.apache.activemq.store.kahadb.KahaDBStore.StoreQueueTask task)
                     throws IOException

Throws:

IOException

removeTopicTask

protected org.apache.activemq.store.kahadb.KahaDBStore.StoreTopicTask removeTopicTask(org.apache.activemq.store.kahadb.KahaDBStore.KahaDBTopicMessageStore store,
                                                                                      MessageId id)

addTopicTask

protected void addTopicTask(org.apache.activemq.store.kahadb.KahaDBStore.KahaDBTopicMessageStore store,
                            org.apache.activemq.store.kahadb.KahaDBStore.StoreTopicTask task)
                     throws IOException

Throws:

IOException

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

getForceRecoverIndex

public boolean getForceRecoverIndex()

setForceRecoverIndex

public void setForceRecoverIndex(boolean forceRecoverIndex)

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

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

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

getTransactionIdTransformer

public TransactionIdTransformer getTransactionIdTransformer()

setTransactionIdTransformer

public void setTransactionIdTransformer(TransactionIdTransformer transactionIdTransformer)

createJobSchedulerStore

public JobSchedulerStore createJobSchedulerStore()
                                          throws IOException,
                                                 UnsupportedOperationException

Description copied from interface: PersistenceAdapter

Creates and returns a new Job Scheduler store instance.

Specified by:

createJobSchedulerStore in interface PersistenceAdapter

Returns:

a new JobSchedulerStore instance if this Persistence adapter provides its own.

Throws:

IOException - If an error occurs while creating the new JobSchedulerStore.

UnsupportedOperationException - If this adapter does not provide its own scheduler store implementation.