Automated deployment of SVN revisions with ANT

Automated deployment from Subversion using ANT is one of those things that has been on my to-do list for a very long time and I've finally got around to giving it a serious look.

My aim was to create a script that would get files from SVN that had changed between two specified revisions.

Eclipse (and CFBuilder) come with ANT installed, however, you will still need some additional libraries.

• ANT Contrib
• XMLTask

As the ANT SVN library doesn't support the log command, I also needed to install SVN so that I had command line access.

• Win32SVN

I installed them all in the my C:\dev\ folder, but the path isn't important, although avoid using spaces.

Finally I created a build.xml file (similar to the one shown below), which I run from the ANT view in Eclipse.

<?xml version="1.0" encoding="ISO-8859-1"?>
<!-- 
********************************************************************
Dependancies:
********************************************************************
Apache Ant 1.8.0 or higher

ANT Contrib, ant-contrib-0.6.jar
http://sourceforge.net/projects/ant-contrib/files/ant-contrib/
  
SVN
http://sourceforge.net/projects/win32svn/

XMLTask
http://www.oopsconsultancy.com/software/xmltask
********************************************************************
-->
<project name="deploy from SVN" basedir=".">

  <!-- path to svn.exe executable -->
  <property name="svn.bin" location="C://dev//Subversion//bin//" />
  <!-- when you want to put changed files -->
  <property name="temp.dir" value="${basedir}\tmp" />
  
  <!-- the revision range -->
  <property name="svn.revision.start" value="38" />
  <property name="svn.revision.end" value="HEAD" />

  <!-- url to svn repository -->
  <property name="svn.repoURL" value="http://myserver/svn/someproject/" />
  <property name="svn.base" value="" />
  <property name="svn.username" value="your-usename" />
  <property name="svn.password" value="your-password" />

  <!-- paths to required ANT libraries -->
  <property name="lib.path.ant-contrib" value="C:\Dev\ant-contrib-0.6-bin\lib\ant-contrib-0.6.jar" />
  <property name="lib.path.xmltask" value="C:\Dev\ant-xmltask\xmltask.jar" />

  <target name="init">
    <!-- load ant-contrib -->
    <property name="ant-contrib.jar" location="${lib.path.ant-contrib}"/>
    <taskdef resource="net/sf/antcontrib/antcontrib.properties" classpath="${ant-contrib.jar}"/>
    <!-- load xmltask -->
    <property name="xmltask.jar" location="${lib.path.xmltask}"/>
    <taskdef name="xmltask" classname="com.oopsconsultancy.xmltask.ant.XmlTask" classpath="${xmltask.jar}"/>
  </target>

  <target name="parseLog" depends="init" description="parses the svn log">
    <!-- use xmltask to get all the files names -->    
    <xmltask source="${basedir}\svnlog.xml">
      <!-- use XPath to get file nodes -->
      <copy path="/log/logentry/paths/path[@kind='file']/text()" property="files" append="true" />
    </xmltask>
    
    <mkdir dir="${temp.dir}" />
    
    <!-- iterate through files -->
    <for list="${files}" param="filepath" delimiter=" ">
      <sequential>
        <!-- create directory -->
        <antcall target="_mkdirFromFilepath">
          <param name="filepath" value="@{filepath}"/>  
        </antcall>
        <!-- get the file from SVN -->
        <antcall target="_getFileFromSVN">
          <param name="filepath" value="@{filepath}"/>  
        </antcall>
      </sequential>
    </for>

  </target>
  
  <target name="svnlog" description="Exports given revision from the given repository URL to temp.dir" depends="init">
      <antcall target="cleanup" />   
    <!-- creates log in an xml file for revision x to xx -->
    <exec executable="${svn.bin}/svn" outputproperty="svnlog.out" output="${basedir}\svnlog.xml" > 
      <arg line="log --xml -v -r${svn.revision.start}:${svn.revision.end} ${svn.repoURL} --username ${svn.username} --password ${svn.password}" />
    </exec>
  </target>
  
  <target name="cleanup">
    <delete dir="${temp.dir}" />
  </target>
  
  <target name="_getFileFromSVN" description="gets the file from SVN if doesn't exist">
    <get src="${svn.repoURL}${filepath}" dest="${temp.dir}${filepath}" username="${svn.username}" password="${svn.password}" ignoreerrors="true"/>
  </target>
  
  <target name="_mkdirFromFilepath" description="creates a directory from filepath. Requires Apache Ant 1.8.0 or higher for locally scoped properties">
    <dirname property="file.dir" file="${temp.dir}${filepath}" />
    <mkdir dir="${file.dir}" />
  </target>
  
</project>

• Posted in:
• Subversion
• ANT

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