How do I share a label value between multiple CruiseControl.NET builds?

Question

I have two projects set up in CruiseControl.NET: CI build and nightly build.

Both of them execute the same NAnt script, but with different parameters.

The Cr

Answer 1

I could not find an existing solution that to do what I needed, so I ended up writing a custom CruiseControl.NET labeller.

Here's how it is done:

1. Create a new project. This will be used as a plugin library by CC.NET
   
   
2. The name of the output DLL needs to match *ccnet.\*.CruiseControl.plugin*. Go to project properties and change "Assembly name" to *ccnet..CruiseControl.plugin*
   
   
3. In your project, add references to the three assemblies found in the CC.NET server installation directory (default is: C:\Program Files\CruiseControl.NET\server):
   • NetReflector.dll
   • ThoughtWorks.CruiseControl.Core.dll
   • ThoughtWorks.CruiseControl.Remote.dll
   
   
4. Create a new public class such as this:

   using ThoughtWorks.CruiseControl.Core;
   using ThoughtWorks.CruiseControl.Remote;
   
   // this is the labeller name that will be used in  ccnet.config
   [ReflectorType("customLabeller")]
   public class CustomLabeller : ILabeller
   {
    [ReflectorProperty("syncronisationFilePath", Required = true)]
    public string SyncronisationFilePath { get; set; }
   
    #region ILabeller Members
   
    public string Generate(IIntegrationResult previousResult)
    {
     if (ShouldIncrementLabel(previousResult))
      return IncrementLabel();
   
     if (previousResult.Status == IntegrationStatus.Unknown)
      return "0";
   
     return previousResult.Label;
    }
   
    public void Run(IIntegrationResult result)
    {
     result.Label = Generate(result);
    }
   
    #endregion
   
    private string IncrementLabel()
    {
     if(!File.Exists(SyncronisationFilePath))
      return "0";
   
     using (FileStream fileStream = File.Open(SyncronisationFilePath,
          FileMode.OpenOrCreate,
          FileAccess.ReadWrite,
          FileShare.None))
      {
       // read last build number from file
       var bytes = new byte[fileStream.Length];
       fileStream.Read(bytes, 0, bytes.Length);
   
       string rawBuildNumber = Encoding.ASCII.GetString(bytes);
   
       // parse last build number
       int previousBuildNumber = int.Parse(rawBuildNumber);
       int newBuildNumber = previousBuildNumber + 1;
   
       // increment build number and write back to file
       bytes = Encoding.ASCII.GetBytes(newBuildNumber.ToString());
   
       fileStream.Seek(0, SeekOrigin.Begin);
       fileStream.Write(bytes, 0, bytes.Length);
   
       return newBuildNumber.ToString();
      }
    }
   
    private static bool ShouldIncrementLabel(IIntegrationResult previousResult)
    {
     return (previousResult.Status == IntegrationStatus.Success ||
       previousResult.Status == IntegrationStatus.Unknown)
    }
   }
   

   
   
   
5. Compile your project and copy the DLL to CC.NET server installation directory (default is: C:\Program Files\CruiseControl.NET\server)
   
   
6. Restart CC.NET Windows service
   
   
7. Create a text file to store the current build number
   
   
8. Add the new labeler to you project definition in ccnet.config file:

       
           C:\Program Files\CruiseControl.NET\server\shared\buildnumber.txt
   false