/// <summary>
/// Overridden so that we can inject our own interfaces.
///
/// </summary>
/// <param name="services"></param>
protected override void ConfigureServices(IServiceCollection services)
{
// The original interface is: IProductRepository
// The original implementation is: ProductRepository
var originalImplementation = new ProductRepository();
var interceptedProductRepository = new InterceptorProxyBuilder <IProductRepository>()
.For(originalImplementation)
.InterceptAndStub(theMethodCalled: nameof(IProductRepository.GetAll), withValue: new List <Models.Product>()
{
new Models.Product()
{
Id = "TheStubbedItemId1", Description = "TheStubbedItemDescription1"
},
new Models.Product()
{
Id = "TheStubbedItemId2", Description = "TheStubbedItemDescription2"
}
})
.Build();
var existingDescriptors = services.Where(s => s.ServiceType == typeof(IProductRepository));
existingDescriptors.ToList().ForEach(descriptor =>
{
services.Remove(descriptor);
});
services.AddSingleton(interceptedProductRepository);
}
public void That_Supports_Callbacks_Before_A_Method_Is_Invoked()
{
// Arrange
var _originalImplementation = new BeforeExecutionMethodSignatures();
IInterceptorProxyBuilder <IBeforeExecutionMethodSignatures> builder = new InterceptorProxyBuilder <IBeforeExecutionMethodSignatures>()
.For(_originalImplementation);
// Arrange
var args = default(object[]);
var parameters = default(IDictionary <string, object>);
var calledBack = false;
var proxy = builder.InterceptBeforeExecutionOf(theMethodNamed: nameof(IBeforeExecutionMethodSignatures.HasOneParameter), andCallBackWith: result =>
{
calledBack = true;
args = result.Args;
parameters = result.Parameters;
})
.Build() as IBeforeExecutionMethodSignatures;
// Act
proxy.HasOneParameter(10);
// Assert
calledBack.Should().BeTrue(because: "the callback should have been invoked. ");
((int)parameters["parameter1"]).Should().Be(10, because: "the value 10 was passed in. ");
}
/// <summary>
/// 实例类型，注入所有代理的类型
/// </summary>
private static void InitProxyTypes()
{
InterceptorProxyBuilder proxyBuilder = new InterceptorProxyBuilder();
//遍历所有的需要代理的类型
foreach (var aopConfig in aopConfigList)
{
try
{
//调用生成代理的方法
var proxy = InterceptorProxyBuilder.CreateProxy(GetType(aopConfig.Value.Type));
//把生成的代理对象放入对象容器
objList.Add(aopConfig.Key, proxy);
//把类型放入类型容器
typeList.Add(proxy.GetType().FullName, proxy.GetType());
}
catch
{
throw new Exception("创建" + aopConfig.Value.Type + "的代理失败");
}
}
}
/// <summary>
/// Overridden so that we can inject our own interfaces.
///
/// </summary>
/// <param name="services"></param>
protected override void ConfigureServices(IServiceCollection services)
{
// The original interface is: IProductRepository
// The original implementation is: ProductRepository
// We will provide our own interface and the original implementation; we will callback "just before" the IProductRepository GetAll() method returns - thereby giving us the return value.
var originalImplementation = new ProductRepository();
var interceptedProductRepository = new InterceptorProxyBuilder <IProductRepository>()
.For(originalImplementation)
.InterceptAfterExecutionOf(theMethodCalled: nameof(IProductRepository.GetAll), andCallbackWith: result => ToSnapshot <IEnumerable <IProduct> >(result))
.Build();
var existingDescriptors = services.Where(s => s.ServiceType == typeof(IProductRepository));
existingDescriptors.ToList().ForEach(descriptor =>
{
services.Remove(descriptor);
});
services.AddSingleton(interceptedProductRepository);
}
