Chapter 7. Running the Examples

In the directory examples there are 2 sets of examples, these are

7.1. The JMS examples

The JMS Examples all follow the same format. Each examples is contained in its own directory which contains the following.

  • build.xml

    This is the ant build file used to run the example

  • src directory

    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.

7.2. The Java EE Examples

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:

export JBOSS_HOME=/home/jbossas5.1/build/output/jboss-5.1.0.GA

Once set we can then deploy the application, from inside the examples/javaee/mdb directory run the command:

./build.sh deploy

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.

./build.sh

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.

./build.sh undeploy

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.