/// <summary>
/// 处理请求
/// </summary>
/// <returns></returns>
private async Task HandleRequest(HttpContext context, RequestModel requestModel)
{
Type serviceType = _types[requestModel.TypeFullName];
var instance = context.RequestServices.GetService(serviceType);
var instanceType = instance.GetType();
var method = instanceType.GetMethod(requestModel.MethodName);
var methodParamters = method.GetParameters();
var paramters = requestModel.Paramters;
for (int i = 0; i < paramters.Length; i++)
{
if (paramters[i].GetType() != methodParamters[i].ParameterType)
{
paramters[i] = paramters[i].ToJson().FromJson(methodParamters[i].ParameterType);
}
}
RpcContext aspectContext = new RpcContext
{
Parameters = paramters,
HttpContext = context,
TargetType = instanceType,
Method = method
};
AspectPiplineBuilder aspectPipline = CreatPipleline(aspectContext);
RpcRequestDelegate rpcRequestDelegate = aspectPipline.Build(PiplineEndPoint(instance, aspectContext));
await rpcRequestDelegate(aspectContext);
}
public void Intercept(IInvocation invocation)
{
var methondInterceptorAttributes = _methodFilters.GetOrAdd($"{invocation.TargetType.FullName}#{invocation.MethodInvocationTarget.Name}", key => {
var methondAttributes = invocation.MethodInvocationTarget.GetCustomAttributes(true)
.Where(i => typeof(AbstractInterceptorAttribute).IsAssignableFrom(i.GetType()))
.Cast <AbstractInterceptorAttribute>().ToList();
var classInterceptorAttributes = invocation.TargetType.GetCustomAttributes(true)
.Where(i => typeof(AbstractInterceptorAttribute).IsAssignableFrom(i.GetType()))
.Cast <AbstractInterceptorAttribute>();
methondAttributes.AddRange(classInterceptorAttributes);
return(methondAttributes);
});
PropertyInject.PropertiesInject(_serviceProvider, methondInterceptorAttributes);
if (methondInterceptorAttributes.Any())
{
AspectPiplineBuilder aspectPipline = new AspectPiplineBuilder();
foreach (var item in methondInterceptorAttributes)
{
aspectPipline.Use(item.InvokeAsync);
}
AspectContext aspectContext = new DefaultAspectContext(invocation);
var aspectDelegate = aspectPipline.Build(context => {
invocation.Proceed();
aspectContext.ReturnValue = invocation.ReturnValue;
return(Task.CompletedTask);
});
aspectDelegate.Invoke(aspectContext).GetAwaiter().GetResult();
}
}
/// <summary>
/// 创建执行管道
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
private AspectPiplineBuilder CreatPipleline(RpcContext aspectContext)
{
AspectPiplineBuilder aspectPipline = new AspectPiplineBuilder();
//第一个中间件构建包装数据
aspectPipline.Use(async(rpcContext, next) =>
{
await next(rpcContext);
ResponseModel responseModel = new ResponseModel
{
Data = rpcContext.ReturnValue,
Code = 200
};
await aspectContext.HttpContext.Response.WriteAsync(responseModel.ToJson());
});
List <RpcFilterAttribute> interceptorAttributes = GetFilterAttributes(aspectContext);
if (interceptorAttributes.Any())
{
foreach (var item in interceptorAttributes)
{
aspectPipline.Use(item.InvokeAsync);
}
}
return(aspectPipline);
}