Snippets for 2010 blog post "WCF - Logging Before and After Operation Invocation"

WCFLog_1.cs

using System;  
using System.ServiceModel.Description;  
using Castle.Core.Logging;

/// <summary>
/// Being a custom EndpointBehavior added to the WCF services such that each operation outputs
///  a debug log message before and after invocation.
/// </summary>
public class OperationLoggingEndpointBehavior : IEndpointBehavior  
{
    private readonly ILogger logger;
    public OperationLoggingEndpointBehavior(ILogger logger)
    {
        this.logger = logger;
    }

    public void AddBindingParameters(ServiceEndpoint endpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)
    {
    }

    public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
    {
    }

    public void ApplyDispatchBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.EndpointDispatcher endpointDispatcher)
    {
        foreach (var operation in endpointDispatcher.DispatchRuntime.Operations)
        {
            operation.CallContextInitializers.Add(new OperationLoggingCallContextInitializer(this.logger, operation.Name, endpoint.Contract.Name));
        }
    }

    public void Validate(ServiceEndpoint endpoint)
    {
    }
}

WCFLog_2.cs

using System;  
using System.ServiceModel;  
using System.ServiceModel.Channels;  
using System.ServiceModel.Dispatcher;  
using Castle.Core.Logging;

/// <summary>
/// Custom call context initializer added to all WCF operations such that each operation outputs
///  a log message before and after invocation.
/// </summary>
public class OperationLoggingCallContextInitializer : ICallContextInitializer  
{
    private readonly ILogger logger;
    private readonly string operationName;
    private readonly string contractName;

    public OperationLoggingCallContextInitializer(ILogger logger, string operationName, string contractName)
    {
        this.logger = logger;
        this.operationName = operationName;
        this.contractName = contractName;
    }

    public object BeforeInvoke(InstanceContext instanceContext, IClientChannel channel, Message message)
    {
        this.logger.DebugFormat("BeforeInvoke {0}.{1}", this.contractName, this.operationName);
        return null;
    }

    public void AfterInvoke(object correlationState)
    {
        this.logger.DebugFormat("AfterInvoke {0}.{1}", this.contractName, this.operationName);
    }
}

WCFLog_3.cs

container.Register(  
    Component.For<OperationLoggingEndpointBehavior>()
        .Attribute("scope").Eq(WcfExtensionScope.Services));