R – Using NT Auth with CruiseControl and Subversion

CruiseControl.Net 1.4.4 has now an Assembly Version Labeller, which generates version numbers compatible with .Net assembly properties.

In my project I have it configured as:

<labeller type="assemblyVersionLabeller" incrementOnFailure="true" major="1" minor="2"/>

(Caveat: assemblyVersionLabeller won't start generating svn revision based labels until an actual commit-triggered build occurs.)

and then consume this from my MSBuild projects with MSBuildCommunityTasks.AssemblyInfo :

<Import Project="$(MSBuildExtensionsPath)\MSBuildCommunityTasks\MSBuild.Community.Tasks.Targets"/>
<Target Name="BeforeBuild">
  <AssemblyInfo Condition="'$(CCNetLabel)' != ''" CodeLanguage="CS" OutputFile="Properties\AssemblyInfo.cs" 
  AssemblyTitle="MyTitle" AssemblyCompany="MyCompany" AssemblyProduct="MyProduct"
  AssemblyCopyright="Copyright ©  2009" ComVisible="false" Guid="some-random-guid"
  AssemblyVersion="$(CCNetLabel)" AssemblyFileVersion="$(CCNetLabel)"/>
</Target>

For sake of completness, it's just as easy for projects using NAnt instead of MSBuild:

<target name="setversion" description="Sets the version number to CruiseControl.Net label.">
    <script language="C#">
        <references>
            <include name="System.dll" />
        </references>
        <imports>
            <import namespace="System.Text.RegularExpressions" />
        </imports>
        <code><![CDATA[
             [TaskName("setversion-task")]
             public class SetVersionTask : Task
             {
              protected override void ExecuteTask()
              {
               StreamReader reader = new StreamReader(Project.Properties["filename"]);
               string contents = reader.ReadToEnd();
               reader.Close();
               string replacement = "[assembly: AssemblyVersion(\"" + Project.Properties["CCNetLabel"] + "\")]";
               string newText = Regex.Replace(contents, @"\[assembly: AssemblyVersion\("".*""\)\]", replacement);
               StreamWriter writer = new StreamWriter(Project.Properties["filename"], false);
               writer.Write(newText);
               writer.Close();
              }
             }
             ]]>
        </code>
    </script>
    <foreach item="File" property="filename">
        <in>
            <items basedir="..">
                <include name="**\AssemblyInfo.cs"></include>
            </items>
        </in>
        <do>
            <setversion-task />
        </do>
    </foreach>
</target>

Hmm, not sure I agree with Nick re tag being similar to a branch. A tag is just a marker

• Trunk would be the main body of development, originating from the start of the project until the present.

• Branch will be a copy of code derived from a certain point in the trunk that is used for applying major changes to the code while preserving the integrity of the code in the trunk. If the major changes work according to plan, they are usually merged back into the trunk.

• Tag will be a point in time on the trunk or a branch that you wish to preserve. The two main reasons for preservation would be that either this is a major release of the software, whether alpha, beta, RC or RTM, or this is the most stable point of the software before major revisions on the trunk were applied.

In open source projects, major branches that are not accepted into the trunk by the project stakeholders can become the bases for forks -- e.g., totally separate projects that share a common origin with other source code.

The branch and tag subtrees are distinguished from the trunk in the following ways:

Subversion allows sysadmins to create hook scripts which are triggered for execution when certain events occur; for instance, committing a change to the repository. It is very common for a typical Subversion repository implementation to treat any path containing "/tag/" to be write-protected after creation; the net result is that tags, once created, are immutable (at least to "ordinary" users). This is done via the hook scripts, which enforce the immutability by preventing further changes if tag is a parent node of the changed object.

Subversion also has added features, since version 1.5, relating to "branch merge tracking" so that changes committed to a branch can be merged back into the trunk with support for incremental, "smart" merging.