private async Task <object> ActionInvoker()
{
var action = ApiActionFactory.Get(this, ActionName, ActionVersion);
if (action == null)
{
return(ErrorResult(new ApiException(ExceptionCode.ApiNotFound)));
}
if (action.Obsolete != null && action.Obsolete.IsError)
{
return(ErrorResult(new ApiException(ExceptionCode.ApiObsolete, action.Obsolete.Message)));
}
ActionName = action.Name;
ApiAction = action;
//验证签名
if (action.HasFilter <SignAttribute>())
{
var signer = new Signer();
if (_NoSign == false)
{
var ex = signer.CheckAsync(this); //验证签名返回错误消息
if (ex != null) //如果必须签名,则抛出异常
{
return(ErrorResult(ex));
}
}
}
//是否启动Session
var sessionState = SessionState;
if (sessionState == ApiSessionState.Auto)
{
sessionState = IsBrowser ? ApiSessionState.Enable : ApiSessionState.Disable;
}
switch (sessionState)
{
case ApiSessionState.Enable:
Properties["SessionState"] = 1;
var err = await OnInitSession();
if (err != null)
{
return(ErrorResult(err));
}
break;
case ApiSessionState.Disable:
case ApiSessionState.Auto:
default:
Properties["SessionState"] = 0;
Trace.WriteLine("本次请求禁用Session");
Session = new DictionarySession();
break;
}
//用户
if (!action.HasFilter <NoLoginAttribute>())
{
//初始化用户
var task = OnInitUser();
var ex = task.IsNull() ? null : await task;
if (ex != null)
{
return(ErrorResult(ex));
}
}
//解析Url参数
Exception parseError;
var args = action.GetArguments(RequestValues, out parseError);
if (parseError != null)
{
return(ErrorResult(parseError));
}
//验证参数
//执行前
{
var task = OnExecuting(action.Name);
var r = await task;
if (r != null)
{
Trace.WriteLine("Api.OnExecuting截断");
return(ProcessResult(r));
}
}
//前Filter
{
var r = await action.OnActionExecuting(this);
if (r != null)
{
Trace.WriteLine("Filter.OnExecuting截断");
return(ProcessResult(r));
}
}
//执行Action
var result = await ApiAction.TryRunTask(action.Execute(this, args));
{//后Filter
var r = await action.OnActionExecuted(this, result);
if (r != null)
{
Trace.WriteLine("Filter.OnExecuted截断");
return(ProcessResult(r));
}
}
{//执行后
var task = OnExecuted(action.Name, result);
var r = await task;
if (r == null)
{
return(ProcessResult(result));
}
Trace.WriteLine("Api.OnExecuted截断");
return(ProcessResult(r));
}
}
