How to integrate maven into an existing cruisecontrol/ant build process?

[Guillaume Berche <gu...@eloquant.com>]

Hello,

I have an existing cruisecontrol + ant build process which compiles (using
several local dependencies), run unit tests (using specific classpathes and
command line options), and generate a distribution. This is automatically
started from within cruisecontrol (http://cruisecontrol.sourceforge.net/)
when a cvs commit is made.

I would like to add a another daily step which is to run a set of maven
goals (metrics, activity, checkstyle, todos, cvsdiff, and statcvs
http://statcvs.sourceforge.net/). For this, I would configure cruisecontrol
to run maven at period date using the mavenbuilder
(http://cruisecontrol.sourceforge.net/main/configxml.html#mavenbuilder).
However, since this project already invested quite a bit of time into the
ANT and cruisecontrol configuration, I am trying to reuse this configuration
rather than reworking the whole projet to make it natively fit into maven
(e.g. Junit test classes are currently in the same package tree as the
source classes).

In particular I am trying to reuse the compilation and unit test execution
steps that are defined in my project's ANT build.xml file

Therefore, following the maven manual, I've created the following
project.xml file.

<?xml version="1.0"?>
<project default="site">

<goal name="java:compile" description= "custom compile" >
   <echo>executing custom legacy ANT compile</echo>
   <ant antfile="build.xml" target="compile"/>
</goal>

</project>

The problem is that my build.xml file contains custom tasks classdef (such
as tomcat deploy) that maven does not find when executing the <ant> task. I
tried to define the ANT_HOME environment variable for maven to pick it up
(and therefore find the custom ANT tasks that I placed into the
$ANT_HOME/lib directory) but this does not work.

I tried looking for an answer on this list but the same question did not get
an answer (http://java2.5341.com/msg/60362.html) I looked at the maven wiki
site http://wiki.codehaus.org/maven/) but could not find an answer either.
The maven "ant guide" that is under construction
(http://maven.apache.org/ant-guide/qna/inprogress.html) would have probably
answered my question but it is not yet available. I looked at the
$MAVEN_HOME/bin/maven script to see if some ant-related variables could be
set but without chances.


Has anybody solved this problem with the ANT classpath already? Is anybody
running the same kind of cruisecontrol + maven build? What are your feedback
on this? Did you experience other problems? Is there an interesting
document/resource/mail thread to look at?

I so far found the following related email threads:
http://sourceforge.net/mailarchive/message.php?msg_id=5748582
http://sourceforge.net/mailarchive/message.php?msg_id=5294661
http://nagoya.apache.org/eyebrowse/ReadMsg?listId=149&msgNo=2627


I saw that there is another alternative to intergrate maven and
cruisecontrol: http://maven.apache.org/reference/plugins/cruisecontrol/ but
I understand this is used to execute cruisecontrol from maven and generate
cruisecontrol config file from an existing maven project.

The other alternative would be to directly invoke the different tools
(JavaNCCS, JDepend, checkstyle, statcvs) directly from ANT. But maven does a
great jobs integrating all theses tools so it would be wastefull not to use
it.

Thanks in advance for your help,

Guillaume.



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