More on the Continuous Integration/Development Stack on Ubuntu

January, 03 2007
triplem
Linux
Java
ContinuousIntegration

In the last post, I have written about the installation of the Ubuntu Continuous Integration/Development Stack. I have installed all of the applications and now I have some more notes on this. There are quite some additions to the originally installed stack, as well as some further descriptions, on how to install the whole stack:
I added ANT-Contrib as well as JUnit to the ANT installation:

    http://ant-contrib.sourceforge.net/
    wget http://prdownloads.sourceforge.net/ant-contrib/ant-contrib
       -1.0b3-bin.tar.gz?download
    tar xvzf ant-contrib-1.0b3-bin.tar.gz
    cd ant-contrib-1.0b3
    cp ant-contrib-1.0b3.jar /usr/share/ant/lib/

    wget http://prdownloads.sourceforge.net/junit/junit4.1.zip?download
    unzip junit4.1.zip
    cd junit4.1
    cp junit-4.1.jar /usr/share/ant/lib

For testing purposes there is a need for a sample project. Therefor I downloaded a project from the Apache Software Foundation and imported it into the SVN Repository.

    wget http://apache.mirroring.de/jakarta/commons/math/source
    /commons-math-1.1-src.zip
    unzip commons-math-1.1-src.zip
    mv commons-math-1.1-src commons-math
    cd commons-math
    mkdir trunk
    mv * trunk
    mkdir tags
    mkdir branches

    svn import /home/mmay/projects/commons-math
       file:///var/svn/sample/ -m "initial import"

You can have a look at the SVN trunk via the Web-Interface:
http://HOSTNAME/svn/sample/

Finally I wanted to use the full CruiseControl functionality, therefor some more configurations where needed. First of all the file /etc/apache2/workers.properties has to be created with the following content (btw, we are using mod_jk and not mod_jk2).

    #
    # workers.properties
    #

    # In Unix, we use forward slashes:
    ps=/

    # list the workers by name

    worker.list=ajp13_worker

    # ------------------------
    # First tomcat server
    # ------------------------
    worker.tomcat1.port=8009
    worker.tomcat1.host=localhost
    worker.tomcat1.type=ajp13

To use this worker, the file jk.conf (directory: /etc/apache2/conf.d/) has to be configured:

    ### MOD_JK Conf
    JkWorkersFile   /etc/apache2/workers.properties

    # The location where mod_jk is going to place its log file
    JkLogFile       /var/log/apache2/mod_jk.log

    # The log level:
    # - info log will contain standard mod_jk activity (default).
    # - warn log will contain non fatal error reports.
    # - error log will contain also error reports.
    # - debug log will contain all information on mod_jk activity
    # - trace log will contain all tracing information on mod_jk
    #   activity
    JkLogLevel      info


    # Assign specific URLs to Tomcat. In general the structure of a
    # JkMount directive is: JkMount [URL prefix] [Worker name]

    # send all requests ending in .jsp to ajp13_worker
    JkMount /*.jsp ajp13_worker
    # send all requests ending /servlet to ajp13_worker
    JkMount /*/servlet/ ajp13_worker

    ## Cruisecontrol
    JkMount /cruisecontrol/* ajp13_worker

    # JkUnmount directive acts as an opposite to JkMount and
    # blocks access to a particular URL.
    # The purpose is to be able to filter out the
    # particular content types from mounted context.

    # do not send requests ending with .gif to ajp13_worker
    #JkUnMount /servlet/*.gif ajp13_worker

To get everthing right, some permissions have to be set as well. First some changes to the tomcat policies (create a file /etc/tomcat5/policy.d/15cruisecontrol.policy) with the following content:

    grant codeBase "file:///usr/share/tomcat5/webapps/cruisecontrol/-" {
      permission java.security.AllPermission;
    };

After this the permissions for the cache directory (can be configured in the web.xml of cruisecontrol) have to be set correctly. This means, that the user tomcat5 should be the owner of the directory (/var/cache/cruisecontrol).

Now we are done, and can enjoy using the stack. Await some more improvements to trac as well as some other niceties.

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