private bool GetUrlPdfResponse(GeneratePdfRequest pub)
{
IDatabase db = RedisConnection.ConnectionMultiplexer.GetDatabase(_settings.RedisDatabaseKey);
ISubscriber sub = RedisConnection.ConnectionMultiplexer.GetSubscriber();
var elapsedSeconds = 0;
var serialisedObject = Newtonsoft.Json.JsonConvert.SerializeObject(pub);
db.ListLeftPush(RequestSubcriberChannelNames.GeneratePdfRequestQueue, serialisedObject);
sub.Publish(RequestSubcriberChannelNames.GeneratePdfRequestChannel, "");
var value = string.Empty;
while (string.IsNullOrEmpty(value))
{
elapsedSeconds++;
value = db.StringGet(pub.Guid);
if (!string.IsNullOrEmpty(value))
{
db.KeyDelete(pub.Guid, CommandFlags.FireAndForget);
return(value == "Completed");
}
Thread.Sleep(1000);
if (elapsedSeconds == WaitForSeconds)
{
db.KeyDelete(pub.Guid, CommandFlags.FireAndForget);
return(false);
}
}
return(true);
}
public string Generate(string sourcePath, string destinationPath, string pdfConverterPath = "", string fileName = "")
{
_sourcePath = sourcePath;
_destinationPath = destinationPath;
_fileName = string.IsNullOrWhiteSpace(_fileName) ? Guid.NewGuid() + ".pdf" : fileName + ".pdf";
var outputpath = _destinationPath + _fileName;
var url = new Uri(_sourcePath, UriKind.Absolute);
if (url.Scheme != Uri.UriSchemeHttp && url.Scheme != Uri.UriSchemeHttps)
{
return(null);
}
/*
* if (_sourcePath.IndexOfAny(Path.GetInvalidPathChars()) != -1)
* return null;
* if (outputpath.IndexOfAny(Path.GetInvalidPathChars()) != -1)
* return null;
* if (_destinationPath.IndexOfAny(Path.GetInvalidPathChars()) != -1)
* return null;
* if (pdfConverterPath.IndexOfAny(Path.GetInvalidPathChars()) != -1)
* return null;
*
* _process = new Process();
*
* var startInfo = new ProcessStartInfo
* {
* FileName = string.IsNullOrWhiteSpace(pdfConverterPath) ? @"wkhtmltopdf.exe" : pdfConverterPath + @"/wkhtmltopdf.exe",
* Arguments = Switches + " \"" + _sourcePath + "\" " + outputpath,
* UseShellExecute = false, // needs to be false in order to redirect output
* RedirectStandardOutput = true,
* RedirectStandardError = true,
* RedirectStandardInput = true, // redirect all 3, as it should be all 3 or none
* WorkingDirectory = _destinationPath
* };
* _process.StartInfo = startInfo;
* _process.Start();
*
* // read the output here...
* var output = _process.StandardOutput.ReadToEnd();
* //var error = _process.StandardError.ReadToEnd();
*
* _process.WaitForExit(30000);
*
* int returnCode = _process.ExitCode;
*
* _process.Close();
*/
var fName = string.IsNullOrWhiteSpace(pdfConverterPath) ? @"wkhtmltopdf.exe" : pdfConverterPath + @"/wkhtmltopdf.exe";
var args = Switches + " \"" + _sourcePath + "\" " + outputpath;
var pub = new GeneratePdfRequest {
FileName = fName, Arguments = args, DestinationPath = _destinationPath
};
var success = GetUrlPdfResponse(pub);
// if 0, it worked
return((success) ? _fileName : null);
}
