XmlDownloader.cs :  » Build-Systems » CruiseControl.NET » ThoughtWorks » CruiseControl » WebDashboard » Dashboard » XmlDownloader » C# / CSharp Open Source

using System;
using System.Web;
using ThoughtWorks.CruiseControl.Core;
using ThoughtWorks.CruiseControl.Core.Util;
using ThoughtWorks.CruiseControl.WebDashboard.Config;
using ThoughtWorks.CruiseControl.WebDashboard.IO;
using ThoughtWorks.CruiseControl.WebDashboard.MVC;

namespace ThoughtWorks.CruiseControl.WebDashboard.Dashboard.XmlDownloader{
  // ToDo - this is untested. We are going to make the main MVC controller an HttpHandler too, and at that point 
  // this can become just another action (albeit one without UI decorators and setting a Content Type)
  public class XmlDownloader : IHttpHandler
  {
    public void ProcessRequest(HttpContext context)
    {
      ObjectGiver objectGiver = CreateObjectGiver(context);

      ICruiseRequest cruiseRequest = (ICruiseRequest) objectGiver.GiveObjectByType(typeof(ICruiseRequest));
      if (cruiseRequest.ServerName == "" || cruiseRequest.ProjectName == "" || cruiseRequest.BuildName == "")
      {
        throw new Exception("All of Server, Project and Build Names must be specified on request in order to retrieve a build log");
      }

      string log = ((IBuildRetriever) objectGiver.GiveObjectByType(typeof(IBuildRetriever))).GetBuild(cruiseRequest.BuildSpecifier).Log;

      context.Response.ContentType = "Text/XML";

      // None of this seems to have an effect - doh!
//      context.Response.Cache.SetExpires(DateTime.Now.AddDays(1));
//      context.Response.Cache.SetCacheability(HttpCacheability.Public);
//      context.Response.Cache.VaryByParams[RequestWrappingCruiseRequest.ServerQueryStringParameter] = true;
//      context.Response.Cache.VaryByParams[RequestWrappingCruiseRequest.ProjectQueryStringParameter] = true;
//      context.Response.Cache.VaryByParams[RequestWrappingCruiseRequest.BuildQueryStringParameter] = true;

      context.Response.Write(log);
      context.Response.Flush();
    }

    public bool IsReusable
    {
      get { return true; }
    }

    private ObjectGiver CreateObjectGiver(HttpContext context)
    {
      // ToDo - merge this with the main request controller setup
      ObjectGiverAndRegistrar giverAndRegistrar = new ObjectGiverAndRegistrar();
      HttpRequest request = context.Request;
      giverAndRegistrar.AddTypedObject(typeof(HttpRequest), request);
      giverAndRegistrar.AddTypedObject(typeof(HttpContext), context);
      giverAndRegistrar.AddTypedObject(typeof(ObjectGiver), giverAndRegistrar);

      // Add functionality to object giver to handle this?
      giverAndRegistrar.AddTypedObject(typeof(IRequest), new AggregatedRequest(new NameValueCollectionRequest(request.Form), new NameValueCollectionRequest(request.QueryString)));
      
      giverAndRegistrar.SetImplementationType(typeof(IPathMapper), typeof(HttpPathMapper));

      giverAndRegistrar.SetDependencyImplementationForType(typeof(PathMappingMultiTransformer), typeof(IMultiTransformer), typeof (HtmlAwareMultiTransformer));

      IConfigurationGetter configurationGetter = (IConfigurationGetter) giverAndRegistrar.GiveObjectByType(typeof(IConfigurationGetter));
      if (configurationGetter == null)
      {
        throw new CruiseControlException("Unable to instantiate configuration getter");
      }
      
      return giverAndRegistrar;
    }
  }
}