Jenkins – Getting Revision for Project with Multiple Modules
I ran into this problem just recently on a project that has more than a single repository for a project. Using Jenkins (Hudson) was awesome for the past 2+ years and I was surprised that it couldn’t handle revision environment variable assignment when more than a single module had a place in a build job. According to some threads, this is done by design. One workaround in particular that I liked was to look into the poll log file and get information out of it.
This is a quick implementation of a get-revision function for nant to grab revision based on the project name (stringToSearch argument) and its looking at the polling log file per project.
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1: <script language="C#" prefix="utils">1:2: <imports>3: <import namespace="System.Globalization"/>4: <import namespace="System.IO"/>5: <import namespace="System.Text.RegularExpressions"/>6: </imports>7: <code>8: <![CDATA[9: [Function("get-revision")]10: public static int GetRevision(string filePath, string stringToSearch)11: {12: if (!System.IO.File.Exists(filePath))13: return 0;14: System.IO.FileInfo file = new System.IO.FileInfo(filePath);15: using (System.IO.StreamReader stream = file.OpenText())16: {17: System.Text.RegularExpressions.Match match = System.Text.RegularExpressions.Regex.Match(stream.ReadToEnd(), stringToSearch + @".*\srevision\s(?<revision>.*?)\r #string_to_search <ANYTHING>revision(group_revision)\r",18: System.Text.RegularExpressions.RegexOptions.Multiline |19: System.Text.RegularExpressions.RegexOptions.IgnoreCase |20: System.Text.RegularExpressions.RegexOptions.IgnorePatternWhitespace);21: return match.Success ? int.Parse(match.Groups["revision"].Value, System.Globalization.NumberStyles.Any) : 0;22: }23: }24: ]]>25: </code>26:</script>
And this is how the typical usage would look like:
1: <property name="svn.revision" value="0" readonly="false"/>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: #f4f4f4; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum2"> 2:</span> <span style="color: #0000ff"><</span><span style="color: #800000">if</span> <span style="color: #ff0000">test</span><span style="color: #0000ff">="${environment::variable-exists('SVN_REVISION')}"</span><span style="color: #0000ff">></span></pre>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum3"> 3:</span> <span style="color: #0000ff"><</span><span style="color: #800000">property</span> <span style="color: #ff0000">name</span><span style="color: #0000ff">="svn.revision"</span> <span style="color: #ff0000">value</span><span style="color: #0000ff">="${environment::get-variable('SVN_REVISION')}"</span> <span style="color: #0000ff">/></span></pre>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: #f4f4f4; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum4"> 4:</span> <span style="color: #0000ff"></</span><span style="color: #800000">if</span><span style="color: #0000ff">></span></pre>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum5"> 5:</span> <span style="color: #0000ff"><</span><span style="color: #800000">if</span> <span style="color: #ff0000">test</span><span style="color: #0000ff">="${not environment::variable-exists('SVN_REVISION')}"</span><span style="color: #0000ff">></span></pre>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: #f4f4f4; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum6"> 6:</span> <span style="color: #0000ff"><</span><span style="color: #800000">property</span> <span style="color: #ff0000">name</span><span style="color: #0000ff">="svn.revision"</span> <span style="color: #ff0000">value</span><span style="color: #0000ff">="${utils::get-revision('.\..\scm-polling.log', project::get-name())}"</span> <span style="color: #0000ff">/></span></pre>
<pre style="border-bottom-style: none; text-align: left; padding-bottom: 0px; line-height: 12pt; background-color: white; margin: 0em; border-left-style: none; padding-left: 0px; width: 100%; padding-right: 0px; font-family: 'Courier New', courier, monospace; direction: ltr; border-top-style: none; color: black; border-right-style: none; font-size: 8pt; overflow: visible; padding-top: 0px"><span style="color: #606060" id="lnum7"> 7:</span> <span style="color: #0000ff"></</span><span style="color: #800000">if</span><span style="color: #0000ff">></span></pre>
As an afterthought, I could actually set SVN_REVISION to the value from the log, and then work with SVN_REVISION as usual.