Question

我正在使用Drew (with Source)提供的解决方案为WCF服务注入统一性。该解决方案通过实例提供程序和行为在内部向WCF添加扩展点。我能够使用我当前的项目。但我面对这种方法的问题是通过读取扩展项目中配置文件中的xml来动态初始化统一容器。

我正在使用与auto工厂的统一，并且不支持通过xml进行配置，并且寻找一种方法来使用代码来从服务项目中注册依赖项而不是xml。如何获得统一容器

任何想法。

Answer 1

我想回答我自己的问题。

在当前的解决方案中，UnityInstanceProvider是硬编码的，所有我必须扩展初始化，以便我可以覆盖。

public class UnityBehaviorExtensionElement : BehaviorExtensionElement
{
    protected override object CreateBehavior()
    {
        return new UnityServiceBehavior()
        {
            InstanceProviderFunc = InstanceProviderFunc(),
            ContainerName = this.ContainerName,
            ContextChannelEnabled = this.ContextChannelEnabled,
            InstanceContextEnabled = this.InstanceContextEnabled,
            OperationContextEnabled = this.OperationContextEnabled,
            ServiceHostBaseEnabled = this.ServiceHostBaseEnabled
        };
    }

    protected virtual Func<Type, string, UnityInstanceProvider> InstanceProviderFunc()
    {
        return (type, str) => new UnityInstanceProvider(type, str, UnityInstanceProvider.CreateUnityContainer);
    }
}
    UnityServiceBehavior: IServiceBehavior
    {
    ....
    public Func<Type, string, UnityInstanceProvider> InstanceProviderFunc;


    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)

    ...

                foreach (ChannelDispatcherBase channelDispatcherBase in serviceHostBase.ChannelDispatchers)
                {
                    ChannelDispatcher channelDispatcher = channelDispatcherBase as ChannelDispatcher;
                    if (channelDispatcher != null)
                    {
                        foreach (EndpointDispatcher endpointDispatcher in channelDispatcher.Endpoints)
                        {
                            endpointDispatcher.DispatchRuntime.InstanceProvider =
                                InstanceProviderFunc(serviceDescription.ServiceType, this.ContainerName);
    ....
    }

现在我可以在服务项目中定义自己的BehaviorExtensionElement并覆盖InstanceProviderFunc

public class TestClientBehaviorExtensionElement:UnityBehaviorExtensionElement
{
    protected override Func<Type, string, UnityInstanceProvider> InstanceProviderFunc()
    {
        return (type, str) => new UnityInstanceProvider(type, str, CreateUnityContainer);
    }

    ///<summary>
    ///</summary>
    ///<param name="containerName"></param>
    ///<returns></returns>
    public IUnityContainer CreateUnityContainer(string containerName)
    {
        IUnityContainer unityContainer = new UnityContainer();
        try
        {
            unityContainer.RegisterType<IOperationContextService, OperationContextService>(new UnityOperationContextLifetimeManager());
          ...
        }
        catch (Exception)
        {
            unityContainer.Dispose();
            throw;
        }

        return unityContainer;
    }

使用Unity的WCF，通过代码配置依赖项

1 个答案: