/// <summary>
/// 有返回值拦截器
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="invocation"></param>
/// <param name="proceed"></param>
/// <returns></returns>
protected override async Task <TResult> InterceptAsync <TResult>(IInvocation invocation, Func <IInvocation, Task <TResult> > proceed)
{
var attribute = await BeforeInterceptAttribute(invocation);
try
{
TResult r;
if (attribute == null)
{
r = await proceed(invocation);
return(r);
}
if (attribute.Item3 != null)
{
await AfterInterceptAttribute(attribute.Item2, invocation, attribute.Item3);
throw attribute.Item3;
}
if (attribute.Item1 == null || !attribute.Item1.Any())
{
r = await proceed(invocation);
}
else
{
AspectMiddlewareBuilder builder = new AspectMiddlewareBuilder();
foreach (var pointAspect in attribute.Item1)
{
builder.Use(next => async ctx => { await pointAspect.OnInvocation(ctx, next); });
}
builder.Use(next => async ctx =>
{
ctx.Result = await proceed(invocation);
});
var aspectfunc = builder.Build();
var aspectContext = new AspectContext(_component, invocation);
await aspectfunc(aspectContext);
r = (TResult)aspectContext.Result;
}
await AfterInterceptAttribute(attribute.Item2, invocation, null);
return(r);
}
catch (Exception e)
{
await AfterInterceptAttribute(attribute.Item2, invocation, e);
throw;
}
}
/// <summary>
/// 无返回值拦截器
/// </summary>
/// <param name="invocation"></param>
/// <param name="proceedInfo"></param>
/// <param name="proceed"></param>
/// <returns></returns>
protected override async Task InterceptAsync(IInvocation invocation, IInvocationProceedInfo proceedInfo, Func <IInvocation, IInvocationProceedInfo, Task> proceed)
{
var attribute = await BeforeInterceptAttribute(invocation);
try
{
if (attribute == null)
{
await proceed(invocation, proceedInfo);
return;
}
if (attribute.Item3 != null)
{
await AfterInterceptAttribute(attribute.Item2, invocation, attribute.Item3);
throw attribute.Item3;
}
if (attribute.Item1 == null || !attribute.Item1.Any())
{
await proceed(invocation, proceedInfo);
}
else
{
AspectMiddlewareBuilder builder = new AspectMiddlewareBuilder();
foreach (var pointAspect in attribute.Item1)
{
builder.Use(next => async ctx => { await pointAspect.OnInvocation(ctx, next); });
}
builder.Use(next => async ctx => { await proceed(invocation, proceedInfo); });
var aspectfunc = builder.Build();
await aspectfunc(new AspectContext(_component, invocation));
}
await AfterInterceptAttribute(attribute.Item2, invocation, null);
}
catch (Exception e)
{
if (attribute != null)
{
await AfterInterceptAttribute(attribute.Item2, invocation, e);
}
throw;
}
}
/// <summary>
/// 有返回值拦截器
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="invocation"></param>
/// <param name="proceedInfo"></param>
/// <param name="proceed"></param>
/// <returns></returns>
protected override async Task <TResult> InterceptAsync <TResult>(IInvocation invocation, IInvocationProceedInfo proceedInfo, Func <IInvocation, IInvocationProceedInfo, Task <TResult> > proceed)
{
var attribute = await BeforeInterceptAttribute(invocation);
try
{
TResult r;
if (attribute == null)
{
r = await proceed(invocation, proceedInfo);
return(r);
}
if (attribute.Item3 != null)
{
await AfterInterceptAttribute(attribute.Item2, invocation, attribute.Item3);
throw attribute.Item3;
}
if (attribute.Item1 == null || !attribute.Item1.Any())
{
r = await proceed(invocation, proceedInfo);
}
else
{
AspectMiddlewareBuilder builder = new AspectMiddlewareBuilder();
foreach (var pointAspect in attribute.Item1)
{
builder.Use(next => async ctx =>
{
await pointAspect.OnInvocation(ctx, next);
//如果有拦截器设置 ReturnValue 那么就直接拿这个作为整个拦截器的方法返回值
if (ctx.InvocationContext.ReturnValue != null)
{
ctx.Result = ctx.InvocationContext.ReturnValue;
}
});
}
builder.Use(next => async ctx =>
{
ctx.Result = await proceed(invocation, proceedInfo);
invocation.ReturnValue = ctx.Result; //原方法的执行返回值
});
var aspectfunc = builder.Build();
var aspectContext = new AspectContext(_component, invocation);
await aspectfunc(aspectContext);
r = (TResult)aspectContext.Result;
}
await AfterInterceptAttribute(attribute.Item2, invocation, null);
return(r);
}
catch (Exception e)
{
if (attribute != null)
{
await AfterInterceptAttribute(attribute.Item2, invocation, e);
}
throw;
}
}