ActiveMQ

Install Apache ActiveMQ

Download ActiveMQ tar file (for example apache-activemq-5.14.4-bin.tar.gz) from http://activemq.apache.org to /usr/downloads

Untared the tar-file in the /usr/local/src/ directory.

Go to /usr/local/src/apache-activemq-5.14.4/bin directory, become superuser and start by issuing

./activemq console (interactive mode)
./activemq start (batch mode)

When checking the port with netstat, getting

netstat -an | fgrep 61616 
   tcp        0      0 :::61616                    :::*                        LISTEN      

indicating that ActiveMQ is running.

Configuration files are /usr/local/src/apache-activemq-5.14.4/bin/env and /usr/local/src/apache-activemq-5.14.4/conf/activemq.xml. In env file there is setting

ACTIVEMQ_OPTS_MEMORY="-Xms64M -Xmx4G"

where -Xmx defines maximum heap size, default is 1G, it should be increased if memory allows.

Install C++ API

Download activemq-cpp tar file (for example activemq-cpp-library-3.8.2-src.tar.gz) from http://activemq.apache.org/cms/download.html to /usr/downloads.

cd /usr/local/src
cp /usr/downloads/activemq-cpp-library-3.8.2-src.tar.gz .
gunzip activemq-cpp-library-3.8.2-src.tar.gz
tar xvf activemq-cpp-library-3.8.2-src.tar
rm activemq-cpp-library-3.8.2-src.tar
cd activemq-cpp-library-3.8.2
./configure --prefix=/usr/local/activemq
###./configure --prefix=/usr/local  (or ./configure CC=/apps/gcc/8.3.0/bin/gcc CXX=/apps/gcc/8.3.0/bin/g++ --prefix=/usr/local)
make
make install

Running C++ example

Go to /usr/local/src/activemq-cpp-library-3.8.2-src. Modify src/examples/main.cpp file setting hostname where ActiveMQ broker is running, line

"failover:(tcp://localhost:61616".

Type 'make', the run it:

./src/examples/example

It will print messages like 'Message #1993 Received: Hello world! from thread 140724062602600' and in the end 'Time to completion = 0.178 seconds.'.

NOTE1: on RHEL5/CentOS5 apr-1.4.8.tar.gz was installed by commands './configure --prefix=/usr/local', 'make', 'make install'

NOTE2: on RHEL5/CentOS5 openssl-1.0.1e.tar.gz was installed by commands './config --prefix=/usr/local', 'make', 'make install'

Running Java example

Make sure maven installed.

Become root, assume bash. Go to example directory:

cd /usr/local/src/apache-activemq/examples/amqp/java

Add 'true' line into following section of pom.xml file.

<plugin>

 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>2.1</version>
 <configuration>
   <fork>true</fork>       
   <source>1.6</source>
   <target>1.6</target>
 </configuration>

</plugin>

Run command

/apps/maven/bin/mvn install

Set following environment (in last line specify server where activemq server is running):

export ACTIVEMQ_USER=admin
export ACTIVEMQ_PASSWORD=PASSWORD
export ACTIVEMQ_HOST=clondb1

In separate xterm, run Listener:

java -cp target/amqp-example-0.1-SNAPSHOT.jar example.Listener

In separate xterm, run Publisher:

java -cp target/amqp-example-0.1-SNAPSHOT.jar example.Publisher

You should see following in Publisher xterm:

Sent 1000 messages
Sent 2000 messages
Sent 3000 messages
...

And following will be in Listener xterm:

Waiting for messages...
Received 1000 messages.
Received 2000 messages.
Received 3000 messages.
...