void IHttpAsyncHandler.EndProcessRequest(IAsyncResult result)
{
if (result.CompletedSynchronously)
{
return;
}
AsyncWebMethodState state = result.AsyncState as AsyncWebMethodState;
if (result.IsCompleted)
{
MethodInfo endMethod = state.MethodDef.EndMethod.MethodType;
try
{
object returnValue = endMethod.Invoke(state.Target, new object[] { result });
GenerateResponse(returnValue, state.Context, state.MethodDef, state.ServiceDef);
}
catch (Exception x)
{
WebServiceHelper.WriteExceptionJsonString(state.Context, x, state.ServiceDef.Serializer);
}
finally
{
state.Target.Dispose();
}
state.Dispose();
}
}
IAsyncResult IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, object extraData)
{
// Proper Content-Type header must be present in order to make a REST call
if (!IsRestMethodCall(context.Request))
{
return(GenerateErrorResponse(context, "Not a valid REST call", extraData));
}
string methodName = context.Request.PathInfo.Substring(1);
WebServiceDef wsDef = WebServiceHelper.GetWebServiceType(context, context.Request.FilePath);
WebMethodDef methodDef = wsDef.Methods[methodName];
if (null == methodDef)
{
return(GenerateErrorResponse(context, "Web method not supported: " + methodName, extraData));
}
// GET request will only be allowed if the method says so
if (context.Request.HttpMethod == "GET" && !methodDef.IsGetAllowed)
{
return(GenerateErrorResponse(context, "Http Get method not supported", extraData));
}
context.Response.Filter = new ResponseFilter(context.Response);
// If the method does not have a BeginXXX and EndXXX pair, execute it synchronously
if (!methodDef.HasAsyncMethods)
{
// Do synchronous call
ExecuteMethod(context, methodDef, wsDef);
// Return a result that says method was executed synchronously
return(new AsmxHandlerSyncResult(extraData));
}
else
{
// Call the Begin method of web service
IDisposable target = Activator.CreateInstance(wsDef.WSType) as IDisposable;
WebMethodDef beginMethod = methodDef.BeginMethod;
int allParameterCount = beginMethod.InputParametersWithAsyc.Count;
IDictionary <string, object> inputValues = GetRawParams(context, beginMethod.InputParameters, wsDef.Serializer);
object[] parameterValues = StrongTypeParameters(inputValues, beginMethod.InputParameters);
// Prepare the list of parameter values which will also include the AsyncCallback and the state
object[] parameterValuesWithAsync = new object[allParameterCount];
Array.Copy(parameterValues, parameterValuesWithAsync, parameterValues.Length);
// Populate last two parameters with async callback and state
parameterValuesWithAsync[allParameterCount - 2] = cb;
AsyncWebMethodState webMethodState = new AsyncWebMethodState(methodName, target,
wsDef, methodDef, context, extraData);
parameterValuesWithAsync[allParameterCount - 1] = webMethodState;
try
{
// Invoke the BeginXXX method and ensure the return result has AsyncWebMethodState. This state
// contains context and other information which we need in oreder to call the EndXXX
IAsyncResult result = beginMethod.MethodType.Invoke(target, parameterValuesWithAsync) as IAsyncResult;
// If execution has completed synchronously within the BeginXXX function, then generate response
// immediately. There's no need to call EndXXX
if (result.CompletedSynchronously)
{
object returnValue = result.AsyncState;
GenerateResponse(returnValue, context, methodDef, wsDef);
target.Dispose();
return(new AsmxHandlerSyncResult(extraData));
}
else
{
if (result.AsyncState is AsyncWebMethodState)
{
return(result);
}
else
{
throw new InvalidAsynchronousStateException("The state passed in the " + beginMethod.MethodName + " must inherit from " + typeof(AsyncWebMethodState).FullName);
}
}
}
catch (Exception x)
{
target.Dispose();
WebServiceHelper.WriteExceptionJsonString(context, x, wsDef.Serializer);
return(new AsmxHandlerSyncResult(extraData));
}
}
}
IAsyncResult IHttpAsyncHandler.BeginProcessRequest(HttpContext context, AsyncCallback cb, object extraData)
{
// Proper Content-Type header must be present in order to make a REST call
if (!IsRestMethodCall(context.Request))
{
return GenerateErrorResponse(context, "Not a valid REST call", extraData);
}
string methodName = context.Request.PathInfo.Substring(1);
WebServiceDef wsDef = WebServiceHelper.GetWebServiceType(context, context.Request.FilePath);
WebMethodDef methodDef = wsDef.Methods[methodName];
if (null == methodDef) return GenerateErrorResponse(context, "Web method not supported: " + methodName, extraData);
// GET request will only be allowed if the method says so
if (context.Request.HttpMethod == "GET" && !methodDef.IsGetAllowed)
return GenerateErrorResponse(context, "Http Get method not supported", extraData);
context.Response.Filter = new ResponseFilter(context.Response);
// If the method does not have a BeginXXX and EndXXX pair, execute it synchronously
if (!methodDef.HasAsyncMethods)
{
// Do synchronous call
ExecuteMethod(context, methodDef, wsDef);
// Return a result that says method was executed synchronously
return new AsmxHandlerSyncResult(extraData);
}
else
{
// Call the Begin method of web service
IDisposable target = Activator.CreateInstance(wsDef.WSType) as IDisposable;
WebMethodDef beginMethod = methodDef.BeginMethod;
int allParameterCount = beginMethod.InputParametersWithAsyc.Count;
IDictionary<string, object> inputValues = GetRawParams(context, beginMethod.InputParameters, wsDef.Serializer);
object[] parameterValues = StrongTypeParameters(inputValues, beginMethod.InputParameters);
// Prepare the list of parameter values which will also include the AsyncCallback and the state
object[] parameterValuesWithAsync = new object[allParameterCount];
Array.Copy(parameterValues, parameterValuesWithAsync, parameterValues.Length);
// Populate last two parameters with async callback and state
parameterValuesWithAsync[allParameterCount - 2] = cb;
AsyncWebMethodState webMethodState = new AsyncWebMethodState(methodName, target,
wsDef, methodDef, context, extraData);
parameterValuesWithAsync[allParameterCount - 1] = webMethodState;
try
{
// Invoke the BeginXXX method and ensure the return result has AsyncWebMethodState. This state
// contains context and other information which we need in oreder to call the EndXXX
IAsyncResult result = beginMethod.MethodType.Invoke(target, parameterValuesWithAsync) as IAsyncResult;
// If execution has completed synchronously within the BeginXXX function, then generate response
// immediately. There's no need to call EndXXX
if (result.CompletedSynchronously)
{
object returnValue = result.AsyncState;
GenerateResponse(returnValue, context, methodDef, wsDef);
target.Dispose();
return new AsmxHandlerSyncResult(extraData);
}
else
{
if (result.AsyncState is AsyncWebMethodState) return result;
else throw new InvalidAsynchronousStateException("The state passed in the " + beginMethod.MethodName + " must inherit from " + typeof(AsyncWebMethodState).FullName);
}
}
catch (Exception x)
{
target.Dispose();
WebServiceHelper.WriteExceptionJsonString(context, x, wsDef.Serializer);
return new AsmxHandlerSyncResult(extraData);
}
}
}
public AsyncWebMethodState(AsyncWebMethodState s)
: this(s.MethodName, s.Target, s.ServiceDef, s.MethodDef, s.Context, s.ExtraData)
{
}
public AsyncWebMethodState(AsyncWebMethodState s)
: this(s.MethodName, s.Target, s.ServiceDef, s.MethodDef, s.Context, s.ExtraData)
{
}
