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What is HornetQ?
HornetQ is an open source project to build a multi-protocol, embeddable, very high performance, clustered, asynchronous messaging system.
For answers to more questions about what HornetQ is and what it isn't please visit the FAQs wiki page.
Why use HornetQ? Here are just a few of the reasons:
100% open source software. HornetQ is licenced using the Apache Software License v2.0 to minimise barriers to adoption.
HornetQ is designed with usability in mind.
Written in Java. Runs on any platform with a Java 6+ runtime, that's everything from Windows desktops to IBM mainframes.
Amazing performance. Our class beating high performance journal provides persistent messaging performance at rates normally seen for non persistent messaging, our non persistent messaging performance rocks the boat too.
Full feature set. All the features you'd expect in any serious messaging system, and others you won't find anywhere else.
Elegant, clean-cut design with minimal third party dependencies. Run HornetQ stand-alone, run it in integrated in your favourite JEE application server, or run it embedded inside your own product. It's up to you.
Seamless high availability. We provide a HA solution with automatic client failover so you can guarantee zero message loss or duplication in event of server failure.
Hugely flexible clustering. Create clusters of servers that know how to load balance messages. Link geographically distributed clusters over unreliable connections to form a global network. Configure routing of messages in a highly flexible way.
For a full list of features, please see the features wiki page .
This short guide explains how to download, install and quickly get started with HornetQ.
After downloading and installing we highly recommend you run the examples to get acquainted with HornetQ. We ship with over 70 examples demonstrating most of the features.
This guide is not intended to be a replacement for the user manual. The user manual goes into much more depth, so please consult that for further information.
The official HornetQ project page is http://hornetq.org/.
The software can be download from the Download page:http://hornetq.org/downloads.html
Please take a look at our project wiki
If you have any user questions please use our user forum
If you have development related questions, please use our developer forum
Pop in and chat to us in our IRC channel
Our project blog
Follow us on twitter
HornetQ Subversion trunk is http://anonsvn.jboss.org/repos/hornetq/trunk
All release tags are availble from http://anonsvn.jboss.org/repos/hornetq/tags
This section describes how to install HornetQ.
HornetQ only runs on Java 6 or later.
By default, HornetQ server runs with 1GiB of memory. If your computer has less memory, or you want to run it with more available RAM, modify the value in bin/run.sh accordingly.
For persistence, HornetQ uses its own fast journal, which you can configure to use libaio (which is the default when running on Linux) or Java NIO. In order to use the libaio module on Linux, you'll need to install libaio, if it's not already installed.
If you're not running on Linux then you don't need to worry about this.
You can install libaio using the following steps as the root user:
Using yum, (e.g. on Fedora or Red Hat Enterprise Linux):
yum install libaio
Using aptitude, (e.g. on Ubuntu or Debian system):
apt-get install libaio
After downloading the distribution, unzip it into your chosen directory. At this point it should be possible to run straight out of the box, the following describes the directory structure:
|___ bin | |___ config | |___ jboss-as-4 | |___ jboss-as-5 | |___ stand-alone | |___ docs | |___ api | |___ quickstart-guide | |___ user-manual | |___ examples | |___ core | |___ javaee | |___ jms | |___ lib | |___ licenses | |___ schemas
bin -- binaries and scripts needed to run HornetQ.
config -- configuration files needed to configure HornetQ. This contains configurations to run HornetQ either in stand-alone or inside JBoss AS 4 and 5. Please refer to the reference guide for details on configuration.
docs -- guides and javadocs for HornetQ
examples -- JMS and Java EE examples. Please refer to the 'running examples' chapter for details on how to run them.
lib -- jars and libraries needed to run HornetQ
licenses -- licenses for HornetQ
schemas -- XML Schemas used to validate HornetQ configuration files
HornetQ can also be deployed in JBoss AS 5. It is not currently shipped by default with the application server (it is scheduled to be shipped as default JMS provider in JBoss Application Server 6.0), so you will need to create new AS 5 profiles to run AS 5 with HornetQ.
To create AS 5 profiles:
Download JBoss AS 5
Set the environment property JBOSS_HOME to point to the directory where you installed JBoss AS 5
run ./build.sh (or build.bat if you are on Windows) in HornetQ config/jboss-as-5 directory
This will create 2 new profiles in $JBOSS_HOME/server:
default-with-hornetq -- it corresponds to AS 5 default profile with HornetQ as its JMS provider. In this profile, HornetQ is non-clustered
all-with-hornetq -- it corresponds to AS 5 all profile with HornetQ as its JMS provider. In this profile, HornetQ is clustered
You can then start JBoss AS 5 using one of these profiles, e.g. :
$JBOSS_HOME/bin/run.sh -c default-with-hornetq
As in AS 4, it is not shipped by default with the application server, so you will need to create new AS 4 profiles to run AS 4 with HornetQ.
To create AS 4 profiles:
Download JBoss AS 4
Set the environment property JBOSS_HOME to point to the directory where you installed JBoss AS 4
run ./build.sh (or build.bat as4 if you are on Windows) in HornetQ config/jboss-as-4 directory
This will create 2 new profiles in $JBOSS_HOME/server:
default-with-hornetq -- it corresponds to AS 4 default profile with HornetQ as its JMS provider. In this profile, HornetQ is non-clustered
all-with-hornetq -- it corresponds to AS 4 all profile with HornetQ as its JMS provider. In this profile, HornetQ is clustered
You can then start JBoss AS 4 using one of these profiles:
$JBOSS_HOME/bin/run.sh -c default-with-hornetq
To run a stand-alone server, open up a shell or command prompt and navigate into the bin directory. Then execute ./run.sh (or run.bat on Windows) and you should see the following output
bin$ ./run.sh 15:05:54,108 INFO @main [HornetQBootstrapServer] Starting HornetQ server ... 15:06:02,566 INFO @main [HornetQServerImpl] HornetQ Server version 2.0.0.CR3 (yellowjacket, 111) started
HornetQ is now running.
Both the run and the stop scripts use the config under config/stand-alone/non-clustered by default. The configuration can be changed by running ./run.sh ../config/stand-alone/clustered or another config of your choosing. This is the same for the stop script and the windows bat files.
To run HornetQ in JBoss AS 5, you need to create the AS 5 profiles for HornetQ first. Then run JBoss AS 5 with one these profiles. For example, to run JBoss AS 5 with a non-clustered HornetQ server, got to $JBOSS_HOME/bin directory and type:
bin$ ./run.sh -c default-with-hornetq 15:18:35,460 INFO [ServerImpl] Starting JBoss (Microcontainer)... 15:18:35,462 INFO [ServerImpl] Release ID: JBoss (Microcontainer) [5.1.0.GA (build: SVNTag= JBoss_5_1_0_GA date=200905221053) ... 15:19:30,305 INFO [HornetQServerImpl] HornetQ Server version 2.0.0.CR3 (yellowjacket, 111) started ... 15:19:43,601 INFO [ServerImpl] JBoss (Microcontainer) [5.1.0.GA (build: SVNTag= JBoss_5_1_0_GA date=200905221053)]Started in 1m:14s:556ms
To run HornetQ in JBoss AS 4 you must follow the same steps described for AS5 without forgetting to create the AS 4 profiles for HornetQ first.
In the directory examples there are 2 sets of examples, these are
JMS Examples - these demonstrate functionality while sending and consumng JMS messages.
Java EE Examples - these demonstrate application server integration, e.g. MDBs, EJBs, Servlets, etc.
The JMS Examples all follow the same format. Each examples is contained in its own directory which contains the following.
This is the ant build file used to run the example
This contains the source code for the example
server0 configuration directory
This contains the configuration files needed to run the server for the example. There may be multiple configuration directories server0, server1 etc for clustered examples etc.
Each example will start one or more stand-alone servers and stop them after the example has completed.
As a quick start we'll run the queue example. For all other examples refer to the main user manual.
Firstly open a Shell or a Command prompt and navigate to the examples/jms/queue directory.
Type the command ./build.sh (or build.bat if you are running on Windows), and you should see the following output:
Buildfile: build.xml run: init: compile: [echo] src.example.dir=/home/andy/projects/hornetq/trunk/examples/jms/queue/src [javac] Compiling 5 source files to /home/andy/projects/hornetq/trunk/examples/jms/queue /build/classes runExample: [java] 10:41:04,149 INFO @main [JMSExample] hornetq.example.runServer is true [java] 10:41:04,149 INFO @main [JMSExample] starting server with config 'server0' logServerOutput true [java] 10:41:04,149 INFO @main [JMSExample] and vm args: -Xms512M,-Xmx512M,-XX:+U seParallelGC,-XX:+AggressiveOpts,-XX:+UseFastAccessorMethods,-Djava.util.logging.config. file=/home/andy/projects/hornetq/trunk/examples/jms/common/../../../src/config/stand-alone/no n-clustered/logging.properties [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:08,437 INFO @main [Journal StorageManager] AIO journal selected [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:08,437 WARN @main [Journal StorageManager] AIO wasn't located on this platform, it will fall back to using pure Jav a NIO. If your platform is Linux, install LibAIO to enable the AIO journal [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:08,437 WARN @main [Securit yStoreImpl] It has been detected that the cluster admin password which is used to replic ate management operation from one node to the other has not had its password changed fro m the installation default. Please see the HornetQ user guide for instructions o n how to do this. [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:10,941 INFO @main [HornetQCo nnectionFactory] read only is false [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:10,941 INFO @main [HornetQCo nnectionFactory] read only is false [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:10,941 INFO @main [HornetQCo nnectionFactory] read only is false [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:10,991 WARN @main [JMSServ erManagerImpl] Binding for java:/ConnectionFactory already exists [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:10,991 WARN @main [JMSServ erManagerImpl] Binding for java:/XAConnectionFactory already exists [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:11,241 INFO @main [Messagi ngServerImpl] HornetQ Server version 2.0.0.BETA5 (buzz-buzz, 107) started [java] org.hornetq.jms.example.SpawnedJMSServer out:10:41:11,241 INFO @main [HornetQBoot strapServer] HornetQ server started [java] org.hornetq.jms.example.SpawnedJMSServer out:STARTED:: [java] 10:41:11,276 INFO @main [JMSExample] using server0/client-jndi.properties f or jndi [java] Sent message: This is a text message [java] Received message: This is a text message [java] [java] ##################### [java] ### SUCCESS! ### [java] ##################### BUILD SUCCESSFUL Total time: 13 seconds
Congratulations! You have successfully run your first HornetQ example. Try some of the others.
The Java EE Examples are examples that require a JEE application server to run. They include MDB, Servlet, EJB examples etc. For this you will need the JBoss Application Server installed. How to do this is explained in the previous chapters.
We'll use the MDB example for the purposes of this guide. For the other examples refer to the user guide. Before going any further ensure that the JBoss Application Server is running.
Like the other Java EE examples the MDB example is a JEE Application which first needs deploying in the JBoss Application Server. The first thing we need to do is set the JBOSS_HOME environment property to the location of the JBoss Application Server, in a Linux shell this would be something like:
Once set we can then deploy the application, from inside the examples/javaee/mdb directory run the command:
This will make a copy of the messaging profile in the JBoss Application server and start the server.
In the shell window you should see something like the following output:
Buildfile: build.xml validate-jboss: deploy: deploy-resources: [copy] Copying 1 file to /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA /server/default-with-hornetq/deploy/hornetq.sar [copy] Copying 1 file to /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA /server/default-with-hornetq/deploy/hornetq.sar init: compile: jar: [jar] Building jar: /home/andy/projects/hornetq/trunk/examples/javaee/mdb/build/mdb-exa mple.jar ear: [jar] Building jar: /home/andy/projects/hornetq/trunk/examples/javaee/mdb/build/mdb-exa mple.ear deploy-ear: [copy] Copying 1 file to /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA ....... [exec] 16:01:04,607 INFO [JBossASKernel] Class:javax.jms.MessageListener [exec] 16:01:04,607 INFO [JBossASKernel] Added bean(jboss.j2ee:ear=mdb-example.ear, jar=mdb-example.jar,name=MessageMDBExample,service=EJB3) to KernelDeployment of: mdb-example.jar [exec] 16:01:04,702 INFO [EJBContainer] STARTED EJB: org.hornetq.javaee.example.server .MDBExample ejbName: MessageMDBExample [exec] 16:01:09,496 INFO [TomcatDeployment] deploy, ctxPath=/mdb-example [exec] 16:01:09,812 WARNING [config] Unable to process deployment descriptor for cont ext '/mdb-example' [exec] 16:01:09,812 INFO [config] Initializing Mojarra (1.2_12-b01-FCS) for context '/mdb-example' [exec] 16:01:09,958 INFO [Http11Protocol] Starting Coyote HTTP/1.1 on http-127.0.0.1- 8080 [exec] 16:01:09,990 INFO [AjpProtocol] Starting Coyote AJP/1.3 on ajp-127.0.0.1-8009 [exec] 16:01:10,001 INFO [ServerImpl] JBoss (Microcontainer) [5.1.0.GA (build: SVNTag =JBoss_5_1_0_GA date=200905151005)] Started in 6m:21s:797ms
We can now run the example, do this by running the following command from within the mdb directory.
You should see some output similar to the following:
Buildfile: build.xml run: init: compile: runExample: [java] Sent message: This is a text message BUILD SUCCESSFUL Total time: 7 seconds
You may also see some output from the JBoss Application Server, in this instance it is:
16:27:54,703 INFO [STDOUT] message This is a text message received
The application can then be undeployed by running the following command from within the mdb directory.
This should so some output similar to the following:
Buildfile: build.xml validate-jboss: undeploy: undeploy-misc: [delete] Deleting: /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA /server/default-with-hornetq/deploy/mdb-example.ear [delete] Deleting: /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA /server/default-with-hornetq/deploy/hornetq.sar/hornetq-queues.xml [delete] Deleting: /home/andy/projects/jbossas5.1/build/output/jboss-5.1.0.GA /server/default-with-hornetq/deploy/hornetq.sar/hornetq-jms.xml BUILD SUCCESSFUL Total time: 1 second
You can verify that the application has been undeployed by checking the output from the JBoss Application Server, in this instance it will be something like:
16:36:45,277 INFO [EJBContainer] STOPPED EJB: org.jboss.javaee.example.server.MDBExample ejbName: MessageMDBExample
Congratulations! you have successfully deployed and run a Java EE example.