// kicks off an asynchronous operation
public static IAsyncResult Begin <TResult>(AsyncCallback callback, object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate <TResult> endDelegate, object tag = null, int timeout = Timeout.Infinite)
{
WrappedAsyncResult <TResult> asyncResult = new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag, callbackSyncContext: null);
asyncResult.Begin(callback, state, timeout);
return(asyncResult);
}
public static IAsyncResult Begin <TResult>(AsyncCallback callback, object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate <TResult> endDelegate, object tag, int timeout)
{
WrappedAsyncResult <TResult> result = new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag);
result.Begin(callback, state, timeout);
return(result);
}
public static IAsyncResult Begin <TResult, TState>(AsyncCallback callback, object callbackState, BeginInvokeDelegate <TState> beginDelegate, EndInvokeDelegate <TState, TResult> endDelegate, TState invokeState, object tag = null, int timeout = Timeout.Infinite, SynchronizationContext callbackSyncContext = null)
{
WrappedAsyncResult <TResult, TState> asyncResult = new WrappedAsyncResult <TResult, TState>(beginDelegate, endDelegate, invokeState, tag, callbackSyncContext);
asyncResult.Begin(callback, callbackState, timeout);
return(asyncResult);
}
public static IAsyncResult Begin <TResult, TState>(AsyncCallback callback, object callbackState, Func <AsyncCallback, object, TState, IAsyncResult> beginDelegate, Func <IAsyncResult, TState, TResult> endDelegate, TState invokeState, object tag = null, int timeout = -1, SynchronizationContext callbackSyncContext = null)
{
WrappedAsyncResult <TResult, TState> wrappedAsyncResult = new WrappedAsyncResult <TResult, TState>(beginDelegate, endDelegate, invokeState, tag, callbackSyncContext);
wrappedAsyncResult.Begin(callback, callbackState, timeout);
return(wrappedAsyncResult);
}
public static IAsyncResult Begin <TResult>(AsyncCallback callback, object state, Func <AsyncCallback, object, IAsyncResult> beginDelegate, Func <IAsyncResult, TResult> endDelegate, object tag = null, int timeout = -1)
{
WrappedAsyncResult <TResult> wrappedAsyncResult = new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag, null);
wrappedAsyncResult.Begin(callback, state, timeout);
return(wrappedAsyncResult);
}
public static IAsyncResult BeginSynchronous <TResult, TState>(AsyncCallback callback, object callbackState, Func <IAsyncResult, TState, TResult> func, TState funcState, object tag)
{
Func <AsyncCallback, object, TState, IAsyncResult> completedBeginInvoke = CachedDelegates <TState> .CompletedBeginInvoke;
WrappedAsyncResult <TResult, TState> wrappedAsyncResult = new WrappedAsyncResult <TResult, TState>(completedBeginInvoke, func, funcState, tag, null);
wrappedAsyncResult.Begin(callback, callbackState, -1);
return(wrappedAsyncResult);
}
// wraps a synchronous operation in an asynchronous wrapper, but still completes synchronously
public static IAsyncResult BeginSynchronous<TResult, TState>(AsyncCallback callback, object callbackState, EndInvokeDelegate<TState, TResult> func, TState funcState, object tag)
{
// Frequently called, so use static delegates
// Inline delegates that take a generic argument from a generic method don't get cached by the compiler so use a field from a static generic class
BeginInvokeDelegate<TState> beginDelegate = CachedDelegates<TState>.CompletedBeginInvoke;
// Pass in the blocking function as the End() method
WrappedAsyncResult<TResult, TState> asyncResult = new WrappedAsyncResult<TResult, TState>(beginDelegate, func, funcState, tag, callbackSyncContext: null);
asyncResult.Begin(callback, callbackState, Timeout.Infinite);
return asyncResult;
}
public override IAsyncResult BeginExecute(Request request, AsyncCallback callback, object state)
{
var responseTask = new TaskCompletionSource <Response>();
BeginInvokeDelegate beginDelegate = delegate(AsyncCallback asyncCallback, object asyncState)
{
if (_commandService.WaitingRequests > ConfigurationSettings.MaxRequests)
{
responseTask.SetResult(Response.ServerTooBusy);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
Type type;
if (!BasicTypes.CommandTypes.TryGetValue(request.Header.GetIfKeyNotFound("Type"), out type))
{
responseTask.SetResult(Response.UnknownType);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
ICommand command;
try
{
command = (ICommand)_serializer.Deserialize(request.Body, type);
}
catch (Exception)
{
responseTask.TrySetResult(Response.ParsingFailure);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
var timeout = request.Header.GetIfKeyNotFound("Timeout", "0").ChangeIfError(0);
var returnMode = (CommandReturnMode)request.Header.GetIfKeyNotFound("Mode", "1").ChangeIfError(1);
var result = _commandService.Execute(command, returnMode, timeout);
var message = _serializer.Serialize(result);
responseTask.TrySetResult(new Response(200, message));
return(CreateInnerAsyncResult(asyncCallback, asyncState));
};
EndInvokeDelegate <Response> endDelegate =
delegate { return(responseTask.Task.Result); };
return(WrappedAsyncResult <Response> .Begin(
callback,
state,
beginDelegate,
endDelegate,
null,
Timeout.Infinite));
}
public static IAsyncResult BeginSynchronous <TResult>(AsyncCallback callback, object state, Func <TResult> func, object tag)
{
BeginInvokeDelegate beginDelegate = delegate(AsyncCallback asyncCallback, object asyncState)
{
var result2 = new SimpleAsyncResult(asyncState);
result2.MarkCompleted(true, asyncCallback);
return(result2);
};
EndInvokeDelegate <TResult> endDelegate = (_ => func());
var result = new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag);
result.Begin(callback, state, -1);
return(result);
}
public override IAsyncResult BeginExecute(Request request, AsyncCallback callback, object state)
{
var responseTask = new TaskCompletionSource <Response>();
BeginInvokeDelegate beginDelegate = delegate(AsyncCallback asyncCallback, object asyncState)
{
var typeName = request.Header.GetIfKeyNotFound("Type");
Type type;
if (!_resultTypeMap.TryGetValue(typeName, out type))
{
responseTask.SetResult(Response.UnknownType);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
var traceId = request.Header.GetIfKeyNotFound("TraceId");
if (string.IsNullOrEmpty(traceId))
{
var errorMessage = string.Format("Receive a empty traceId Reply Type({0}).", typeName);
responseTask.SetResult(new Response(500, errorMessage));
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
IResult result;
try
{
result = (IResult)_serializer.Deserialize(request.Body, type);
}
catch (Exception)
{
responseTask.TrySetResult(Response.ParsingFailure);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
}
_resultBus.Send(result, traceId);
return(CreateInnerAsyncResult(asyncCallback, asyncState));
};
EndInvokeDelegate <Response> endDelegate =
delegate { return(responseTask.Task.Result); };
return(WrappedAsyncResult <Response> .Begin(
callback,
state,
beginDelegate,
endDelegate,
null,
Timeout.Infinite));
}
public static IAsyncResult BeginSynchronous <TResult>(AsyncCallback callback, object state, Func <TResult> func, object tag)
{
// Begin() doesn't perform any work on its own and returns immediately.
BeginInvokeDelegate beginDelegate = (asyncCallback, asyncState) => {
SimpleAsyncResult innerAsyncResult = new SimpleAsyncResult(asyncState);
innerAsyncResult.MarkCompleted(true /* completedSynchronously */, asyncCallback);
return(innerAsyncResult);
};
// The End() method blocks.
EndInvokeDelegate <TResult> endDelegate = _ => {
return(func());
};
WrappedAsyncResult <TResult> asyncResult = new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag);
asyncResult.Begin(callback, state, Timeout.Infinite);
return(asyncResult);
}
public static IAsyncResult BeginSynchronous <TResult>(AsyncCallback callback,
object state, Func <TResult> func, object tag)
{
BeginInvokeDelegate beginDelegate = (asyncCallback, asyncState) => {
MvcAsyncResult inner = new MvcAsyncResult(asyncState);
inner.MarkCompleted(true, asyncCallback);
return(inner);
};
EndInvokeDelegate <TResult> endDelegate = _ => {
return(func());
};
WrappedAsyncResult <TResult> result =
new WrappedAsyncResult <TResult>(beginDelegate, endDelegate, tag);
result.Begin(callback, state, Timeout.Infinite);
return(result);
}
