MS Workflow behavior extensions do not execute

MS Workflow behavior extensions do not execute

I just came across behaviour problem where I wanted to use custom behaviour, but the behaviour did not execute. I have added behaviour extension as below:

To add behaviour you need to specify your behaviour:

        <behaviorExtensions>
          <add name="dummyLogging" type="dummy.Logging, dummy"/>
        </behaviorExtensions>


Where:
name: name how its refered to.
type:- "object name" + "," +   name of the namespace"

my web.config

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0"/>   
  </system.web>  
  <system.serviceModel>
      <extensions>
        <behaviorExtensions>
          <add name="dummyLogging" type="dummy.Logging, dummy"/>
        </behaviorExtensions>
      </extensions>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

Solution:

Now what I was missing was, say to MS Workflow to execute the custom behaviour. In behaviour we need to activate the behaviour, otherwise it does not get triggered.

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.0"/>   
  </system.web>  
  <system.serviceModel>
      <extensions>
        <behaviorExtensions>
          <add name="dummyLogging" type="dummy.Logging, dummy"/>
        </behaviorExtensions>
      </extensions>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment -->
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <dummyLogging />         
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <serviceHostingEnvironment multipleSiteBindingsEnabled="true"/>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

Adding service behaviour into MS Workflow

Basically you use an IServiceBehavior to add the extension and a BehaviorExtensionElement to add the IServiceBehavior.

public class StringWriterBehavior : IServiceBehavior
{
    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {
        var host = (WorkflowServiceHost)serviceHostBase;
        host.WorkflowExtensions.Add<TextWriter>(() => new StringWriter());
    }
}

public class StringWriterElement : BehaviorExtensionElement
{
    public override Type BehaviorType
    {
        get { return typeof(StringWriterBehavior); }
    }

    protected override object CreateBehavior()
    {
        return new StringWriterBehavior();
    }
}

And the config file:

<system.serviceModel>
  <extensions>
    <behaviorExtensions>
      <add name=“stringWriter“
           type="OrderService.StringWriterElement, MyWorkflowService"/>
    </behaviorExtensions>
  </extensions>
  <services>
    <service name="OrderWorkflow“
             behaviorConfiguration="OrderWorkflowBehavior">
    </service>
  </services>
  <behaviors>
    <serviceBehaviors>
      <behavior name="OrderWorkflowBehavior">
        <serviceMetadata httpGetEnabled="True"/>
        <stringWriter />
      </behavior>
    </serviceBehaviors>
  </behaviors>
</system.serviceModel>

source:
http://social.msdn.microsoft.com/Forums/en-US/wfprerelease/thread/a9b45eaf-c8e2-444c-819d-e448868e68bb/