internal async Task <RequestAnalysis> AnalyzeRequest(HttpRequest request)
{
string absolutePath = request.Path;//request.Url.AbsolutePath;
if (absolutePath.StartsWith(_recurringTaskHandlerAbsolutePath, StringComparison.Ordinal))
{
var analysis = new RequestAnalysis();
analysis.IsRecurringTask = true;
int parameterStartingIndex = _recurringTaskHandlerAbsolutePath.Length;
if (absolutePath.Length > parameterStartingIndex)
{
// AbsolutePath format:
// task -> ~/__RevaleeRecurring.axd/{identifier}/{occurrence}
// heartbeat -> ~/__RevaleeRecurring.axd/{heartbeatId}
int taskParameterDelimiterIndex = absolutePath.IndexOf('/', parameterStartingIndex);
if (taskParameterDelimiterIndex < 0)
{
// no task parameter delimiter
if ((absolutePath.Length - parameterStartingIndex) == 32)
{
Guid heartbeatId;
if (Guid.TryParseExact(absolutePath.Substring(parameterStartingIndex), "N", out heartbeatId))
{
if (heartbeatId.Equals(_id))
{
await OnActivate();
}
}
}
}
else
{
// task parameter delimiter present
if ((absolutePath.Length - taskParameterDelimiterIndex) > 1)
{
if (long.TryParse(absolutePath.Substring(taskParameterDelimiterIndex + 1), NumberStyles.None, CultureInfo.InvariantCulture, out analysis.Occurrence))
{
analysis.TaskIdentifier = absolutePath.Substring(parameterStartingIndex, taskParameterDelimiterIndex - parameterStartingIndex);
}
}
}
}
// If the TaskIdentifier is not set the default will be string.Empty, which will be discarded by the HttpModule
return(analysis);
}
return(new RequestAnalysis());
}
public Task Invoke(HttpContext context)
{
try
{
TaskManifest _manifest = LoadedManifest(context).Result;
if (context?.Request != null && _manifest != null)
{
var request = context.Request;
RequestAnalysis analysis = _manifest.AnalyzeRequest(context.Request).Result;
if (analysis.IsRecurringTask)
{
ConfiguredTask taskConfig;
HttpStatusCode statusCode;
if (_manifest.TryGetTask(analysis.TaskIdentifier, out taskConfig))
{
if (request.Method == "POST")
{
if (_revalee.ValidateCallback(context))
{
if (taskConfig.SetLastOccurrence(analysis.Occurrence))
{
_manifest.Reschedule(taskConfig).Wait();
context.Items.Add(RouteKeys.IN_PROCESS_CONTEXT_KEY, BuildCallbackDetails(request, taskConfig.Identifier));
context.Request.Path = new PathString(taskConfig.Url.AbsolutePath);
goto Continue;
}
else
{
statusCode = HttpStatusCode.Accepted;
}
}
else
{
statusCode = HttpStatusCode.Unauthorized;
}
}
else
{
if (request.Method == "GET" || request.Method == "HEAD")
{
if (request.Headers["Expect"] == "100-continue")
{
context.Response.StatusCode = (int)HttpStatusCode.Continue;
goto Continue;
}
else
{
statusCode = HttpStatusCode.MethodNotAllowed;
}
}
else
{
statusCode = HttpStatusCode.NotImplemented;
}
}
}
else
{
statusCode = HttpStatusCode.NoContent;
}
context.Response.StatusCode = (int)statusCode;
return(context.Response.WriteAsync(""));
}
}
}
catch (Exception ex)
{
}
Continue:
return(_next(context));
}