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202 changes: 202 additions & 0 deletions LICENSE
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Apache License
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1 change: 1 addition & 0 deletions NOTICE
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Copyright 2011 FuseSource
88 changes: 88 additions & 0 deletions README
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Getting Started with ActiveMQ
=============================

This project includes a number of example configurations showing various ActiveMQ High Availability scenarios. These
include: Master-Slave, Network of Brokers, and Network of Master-Slave Brokers. This project also includes a simple
JMS Queue (point to point) message producer and message consumer.

Notes:
* all instructions assume you are executing from the top level directory of this project
* it is assumed you have Apache Maven installed, and that you are familiar with its usage

The Master-Slave configuration enables quick activation of a broker instance to continue processing of messages stored
within a message persistence store. It utilizes a shared file system, in this case the same local directory, with both
brokers referencing this same directory. The first broker instance to acquire a file lock is considered the 'master',
and all subsequent broker instances waiting for the file lock are considered 'slave'.

To run this sample,

Start the 'master' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-failover1.xml

Start the 'slave' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-failover2.xml

Start the message consumer
> mvn -P consumer

Start the message producer
> mvn -P producer

The message producer is coded to send 100 messages. The consumer will log the messages it receives, and will timeout and
exit after 120 seconds of inactivity (no messages received). To test failover, kill (Ctrl+C) the current master broker
while the Producer is sending messages. You will see a log entry about the clients reconnecting. You will eventually see
log entries in the slave broker about it starting up; it may take up to 30 seconds for the slave to detect that the
master has failed and startup.

To test fail back, restart the failed broker, see the log entries about it not acquiring the file lock, kill (Ctrl+C)
the currently active broker, and see the client automatically fail back. The automatic reconnect be the clients assumes,
as is the case with this example, that the clients are using the fail over transport.


The Network of Brokers configuration allows you to scale out the processing of messages across multiple brokers. In this
configuration, messages are forwarded from the broker the producer sends the messages to the networked broker that the
consumer is connected to. The clients have been configured to connect to different brokers.

To run this sample,

Start the first broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob1.xml

Start the second broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob2.xml

Start the message consumer
> mvn -P consumer-nwob

Start the message producer
> mvn -P producer-nwob

You can test the brokers forwarding messages by randomly killing and restarting broker instances. You'll see messages
stop when the broker is stopped, and you'll see any sent messages forwarded when the brokers are restarted and the
network connection is re-established. This shows how ActiveMQ is saving persistent messages in its store for delivery
when the broker re-starts. You can especially see this if you kill the broker the consumer is connected to
(activemq-nwob1.xml) while the producer continues sending messages to the other broker.


The last scenario is the Network of Master-Slave brokers. This combines both the scale out capabilities of the Network
of Brokers with quick access to persistent messages of Master-Slave.

To run this sample,

Start the first 'master' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob-ms1a.xml

Start the first 'slave' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob-ms1b.xml

Start the second 'master' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob-ms2a.xml

Start the second 'slave' broker
> <activemq_home>/bin/activemq console xbean:file:conf/activemq-nwob-ms2b.xml

Start the message consumer
> mvn -P consumer-nwob-ms

Start the message producer
> mvn -P producer-nwob-ms
42 changes: 42 additions & 0 deletions conf/activemq-failover1.xml
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<!--
~ Copyright 2011 FuseSource
~
~ Licensed under the Apache License, Version 2.0 (the "License");
~ you may not use this file except in compliance with the License.
~ You may obtain a copy of the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS,
~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
~ See the License for the specific language governing permissions and
~ limitations under the License.
-->

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:amq="http://activemq.apache.org/schema/core"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd
">

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="brokerOne"
dataDirectory="./target/activemq-data/failover" useJmx="true">

<managementContext>
<managementContext connectorPort="1099"/>
</managementContext>

<persistenceAdapter>
<kahaDB directory="./target/activemq-data/failover/kahadb"/>
</persistenceAdapter>

<transportConnectors>
<transportConnector name="openwire" uri="tcp://0.0.0.0:61616"/>
</transportConnectors>

</broker>

</beans>
42 changes: 42 additions & 0 deletions conf/activemq-failover2.xml
@@ -0,0 +1,42 @@
<!--
~ Copyright 2011 FuseSource
~
~ Licensed under the Apache License, Version 2.0 (the "License");
~ you may not use this file except in compliance with the License.
~ You may obtain a copy of the License at
~
~ http://www.apache.org/licenses/LICENSE-2.0
~
~ Unless required by applicable law or agreed to in writing, software
~ distributed under the License is distributed on an "AS IS" BASIS,
~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
~ See the License for the specific language governing permissions and
~ limitations under the License.
-->

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:amq="http://activemq.apache.org/schema/core"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://activemq.apache.org/schema/core http://activemq.apache.org/schema/core/activemq-core.xsd
">

<broker xmlns="http://activemq.apache.org/schema/core" brokerName="brokerTwo"
dataDirectory="./target/activemq-data/failover" useJmx="true">

<managementContext>
<managementContext connectorPort="1199"/>
</managementContext>

<persistenceAdapter>
<kahaDB directory="./target/activemq-data/failover/kahadb"/>
</persistenceAdapter>

<transportConnectors>
<transportConnector name="openwire" uri="tcp://0.0.0.0:62626"/>
</transportConnectors>

</broker>

</beans>

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