private PdfOCRResponse HandleOCRPDF(PDFApi pdfApiInstance, PDFOCRActionConfiguration actionConfiguration, FileToProcess fileToProcess, string fileID, int workerNumber)
{
// First get the number of page of the PDF
PdfGetInfoResponse getInfoResponse = PassportPDFRequestsUtilities.SendGetInfoRequest(pdfApiInstance, new PdfGetInfoParameters(fileID), workerNumber, fileToProcess.FileAbsolutePath, FileOperationStartEventHandler);// todo: use appropriate event handler
if (getInfoResponse.Error != null)
{
return(null);
}
PdfOCRParameters ocrParameters = PassportPDFParametersUtilities.GetOCRParameters(actionConfiguration, fileID);
int pageCount = getInfoResponse.PageCount;
int chunkLength = Math.Min(getInfoResponse.PageCount, FrameworkGlobals.PAGE_CHUNK_LENGTH_FOR_OCR_ACTION);
int chunkCount = getInfoResponse.PageCount > FrameworkGlobals.PAGE_CHUNK_LENGTH_FOR_OCR_ACTION ? (int)Math.Ceiling((double)getInfoResponse.PageCount / FrameworkGlobals.PAGE_CHUNK_LENGTH_FOR_OCR_ACTION) : 1;
PdfOCRResponse ocrResponse = null;
for (int chunkNumber = 1; chunkNumber <= chunkCount; chunkNumber++)
{
ocrParameters.PageRange = PassportPDFParametersUtilities.GetChunkProcessingPageRange(pageCount, chunkLength, chunkNumber, chunkCount);
ocrResponse = PassportPDFRequestsUtilities.SendOCRRequest(pdfApiInstance, ocrParameters, workerNumber, fileToProcess.FileAbsolutePath, ocrParameters.PageRange, pageCount, FileChunkProcessingProgressEventHandler);
if (_cancellationPending || ocrResponse == null)
{
return(ocrResponse);
}
}
return(ocrResponse);
}
public static PdfOCRResponse SendOCRRequest(PDFApi apiInstance, PdfOCRParameters ocrParameters, int workerNumber, string inputFilePath, string pageRange, int pageCount, OperationsManager.ChunkProgressDelegate chunkProgressEventHandler)
{
Exception e = null;
int pausems = 5000;
for (int i = 0; i < FrameworkGlobals.MAX_RETRYING_REQUESTS; i++)
{
chunkProgressEventHandler.Invoke(workerNumber, inputFilePath, pageRange, pageCount, i);
try
{
PdfOCRResponse response = apiInstance.OCR(ocrParameters);
return(response);
}
catch (Exception ex)
{
if (i < FrameworkGlobals.MAX_RETRYING_REQUESTS - 1)
{
Thread.Sleep(pausems); //marking a pause in case of cnx temporarily out and to avoid overhead.
pausems += 2000;
}
else
{//last iteration
e = ex;
}
}
}
throw e;
}
private WorkflowProcessingResult ProcessWorkflow(PDFApi pdfApiInstance, ImageApi imageApiInstance, OperationsWorkflow workflow, FileToProcess fileToProcess, int workerNumber)
{
List <string> warningMessages = new List <string>();
bool contentRemoved = false;
bool versionChanged = false;
bool linearized = false;
string fileID = null;
foreach (Operation operation in workflow.OperationsToBePerformed)
{
Error actionError = null;
ReduceErrorInfo reduceErrorInfo = null;
long remainingTokens = 0;
if (_cancellationPending)
{
return(null);
}
switch (operation.Type)
{
case Operation.OperationType.LoadPDF:
PdfVersion outputVersion = (PdfVersion)operation.Parameters;
PdfLoadDocumentResponse loadDocumentResponse = HandleLoadPDF(pdfApiInstance, outputVersion, fileToProcess, workerNumber);
if (loadDocumentResponse == null)
{
OnError(LogMessagesUtils.ReplaceMessageSequencesAndReferences(FrameworkGlobals.MessagesLocalizer.GetString("message_invalid_response_received", FrameworkGlobals.ApplicationLanguage), actionName: "Load"));
return(null);
}
remainingTokens = loadDocumentResponse.RemainingTokens;
actionError = loadDocumentResponse.Error;
fileID = loadDocumentResponse.FileId;
break;
case Operation.OperationType.LoadImage:
ImageLoadResponse imageLoadResponse = HandleLoadImage(imageApiInstance, fileToProcess, workerNumber);
if (imageLoadResponse == null)
{
OnError(LogMessagesUtils.ReplaceMessageSequencesAndReferences(FrameworkGlobals.MessagesLocalizer.GetString("message_invalid_response_received", FrameworkGlobals.ApplicationLanguage), actionName: "Load"));
return(null);
}
remainingTokens = imageLoadResponse.RemainingTokens;
actionError = imageLoadResponse.Error;
fileID = imageLoadResponse.FileId;
break;
case Operation.OperationType.ReducePDF:
PDFReduceActionConfiguration reduceActionConfiguration = (PDFReduceActionConfiguration)operation.Parameters;
PdfReduceResponse reduceResponse = HandleReducePDF(pdfApiInstance, reduceActionConfiguration, fileToProcess, fileID, workerNumber, warningMessages);
if (reduceResponse == null)
{
OnError(LogMessagesUtils.ReplaceMessageSequencesAndReferences(FrameworkGlobals.MessagesLocalizer.GetString("message_invalid_response_received", FrameworkGlobals.ApplicationLanguage), actionName: "Reduce"));
return(null);
}
remainingTokens = reduceResponse.RemainingTokens;
contentRemoved = reduceResponse.ContentRemoved;
versionChanged = reduceResponse.VersionChanged;
actionError = reduceResponse.Error;
reduceErrorInfo = reduceResponse.ErrorInfo;
linearized = reduceActionConfiguration.FastWebView;
break;
case Operation.OperationType.OCRPDF:
PDFOCRActionConfiguration ocrActionConfiguration = (PDFOCRActionConfiguration)operation.Parameters;
PdfOCRResponse ocrResponse = HandleOCRPDF(pdfApiInstance, ocrActionConfiguration, fileToProcess, fileID, workerNumber);
if (ocrResponse == null)
{
OnError(LogMessagesUtils.ReplaceMessageSequencesAndReferences(FrameworkGlobals.MessagesLocalizer.GetString("message_invalid_response_received", FrameworkGlobals.ApplicationLanguage), actionName: "OCR"));
return(null);
}
remainingTokens = ocrResponse.RemainingTokens;
actionError = ocrResponse.Error;
break;
}
if (actionError != null)
{
string errorMessage = reduceErrorInfo != null && reduceErrorInfo.ErrorCode != ReduceErrorCode.OK ? ErrorManager.GetMessageFromReduceActionError(reduceErrorInfo, fileToProcess.FileAbsolutePath) : ErrorManager.GetMessageFromPassportPDFError(actionError, operation.Type, fileToProcess.FileAbsolutePath);
OnError(errorMessage);
return(null);
}
else
{
RemainingTokensUpdateEventHandler.Invoke(remainingTokens);
}
}
return(new WorkflowProcessingResult(contentRemoved, versionChanged, linearized, fileID, warningMessages));
}
