org.apache.activemq.partition

Class PartitionBroker

java.lang.Object

org.apache.activemq.broker.BrokerFilter

org.apache.activemq.partition.PartitionBroker

All Implemented Interfaces:

Broker, Region, Service

Direct Known Subclasses:

ZooKeeperPartitionBroker

public class PartitionBroker
extends BrokerFilter

A BrokerFilter which partitions client connections over a cluster of brokers. It can use a client identifier like client id, authenticated user name, source ip address or even destination being used by the connection to figure out which is the best broker in the cluster that the connection should be using and then redirects failover clients to that broker.

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	LOG
protected ConcurrentMap<ConnectionId,org.apache.activemq.partition.PartitionBroker.ConnectionMonitor>	monitors
protected PartitionBrokerPlugin	plugin
protected boolean	reloadConfigOnPoll

Fields inherited from class org.apache.activemq.broker.BrokerFilter

next

Constructor Summary

Constructors

Constructor and Description
PartitionBroker(Broker broker, PartitionBrokerPlugin plugin)

Method Summary

Methods

Modifier and Type	Method and Description
void	addConnection(ConnectionContext context, ConnectionInfo info) A client is establishing a connection with the broker.
protected void	checkTarget(org.apache.activemq.partition.PartitionBroker.ConnectionMonitor monitor)
protected Partitioning	getConfig()
protected String	getConnectionString(HashSet<String> ids)
protected Target	getTarget(ActiveMQDestination dest)
protected void	monitorWait()
protected void	monitorWakeup()
protected void	onMonitorStart()
protected void	onMonitorStop()
protected Target	pickBestBroker(org.apache.activemq.partition.PartitionBroker.ConnectionMonitor monitor)
protected void	reloadConfiguration()
void	removeConnection(ConnectionContext context, ConnectionInfo info, Throwable error) A client is disconnecting from the broker.
protected void	runPartitionMonitor()
void	send(ProducerBrokerExchange producerExchange, Message messageSend) Send a message to the broker to using the specified destination.
void	start()

Methods inherited from class org.apache.activemq.broker.BrokerFilter

acknowledge, addBroker, addConsumer, addDestination, addDestinationInfo, addProducer, addSession, beginTransaction, brokerServiceStarted, commitTransaction, fastProducer, forgetTransaction, gc, getAdaptor, getAdminConnectionContext, getBrokerId, getBrokerName, getBrokerSequenceId, getBrokerService, getClients, getDestinationMap, getDestinationMap, getDestinations, getDestinations, getDurableDestinations, getExecutor, getPeerBrokerInfos, getPreparedTransactions, getRoot, getScheduler, getTempDataStore, getVmConnectorURI, isExpired, isFaultTolerantConfiguration, isFull, isStopped, messageConsumed, messageDelivered, messageDiscarded, messageExpired, messagePull, networkBridgeStarted, networkBridgeStopped, nowMasterBroker, postProcessDispatch, prepareTransaction, preProcessDispatch, processConsumerControl, processDispatchNotification, reapplyInterceptor, removeBroker, removeConsumer, removeDestination, removeDestinationInfo, removeProducer, removeSession, removeSubscription, rollbackTransaction, sendToDeadLetterQueue, setAdminConnectionContext, slowConsumer, stop

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static final Logger LOG

plugin

protected final PartitionBrokerPlugin plugin

reloadConfigOnPoll

protected boolean reloadConfigOnPoll

monitors

protected final ConcurrentMap<ConnectionId,org.apache.activemq.partition.PartitionBroker.ConnectionMonitor> monitors

Constructor Detail

PartitionBroker

public PartitionBroker(Broker broker,
               PartitionBrokerPlugin plugin)

Method Detail

start

public void start()
           throws Exception

Specified by:

start in interface Service

Overrides:

start in class BrokerFilter

Throws:

Exception

onMonitorStart

protected void onMonitorStart()

onMonitorStop

protected void onMonitorStop()

runPartitionMonitor

protected void runPartitionMonitor()

monitorWait

protected void monitorWait()
                    throws InterruptedException

Throws:

InterruptedException

monitorWakeup

protected void monitorWakeup()

reloadConfiguration

protected void reloadConfiguration()
                            throws Exception

Throws:

Exception

checkTarget

protected void checkTarget(org.apache.activemq.partition.PartitionBroker.ConnectionMonitor monitor)

getConnectionString

protected String getConnectionString(HashSet<String> ids)

pickBestBroker

protected Target pickBestBroker(org.apache.activemq.partition.PartitionBroker.ConnectionMonitor monitor)

getTarget

protected Target getTarget(ActiveMQDestination dest)

addConnection

public void addConnection(ConnectionContext context,
                 ConnectionInfo info)
                   throws Exception

Description copied from interface: Broker

A client is establishing a connection with the broker.

Specified by:

addConnection in interface Broker

Overrides:

addConnection in class BrokerFilter

Throws:

Exception - TODO

removeConnection

public void removeConnection(ConnectionContext context,
                    ConnectionInfo info,
                    Throwable error)
                      throws Exception

Description copied from interface: Broker

A client is disconnecting from the broker.

Specified by:

removeConnection in interface Broker

Overrides:

removeConnection in class BrokerFilter

Parameters:

context - the environment the operation is being executed under.

error - null if the client requested the disconnect or the error that caused the client to disconnect.

Throws:

Exception - TODO

send

public void send(ProducerBrokerExchange producerExchange,
        Message messageSend)
          throws Exception

Description copied from interface: Region

Send a message to the broker to using the specified destination. The destination specified in the message does not need to match the destination the message is sent to. This is handy in case the message is being sent to a dead letter destination.

Specified by:

send in interface Region

Overrides:

send in class BrokerFilter

Parameters:

producerExchange - the environment the operation is being executed under.

Throws:

Exception - TODO

getConfig

protected Partitioning getConfig()