Finish the document parsing app.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/document_parsing/managers.py

@@ -1,14 +1,50 @@
 from __future__ import unicode_literals
 
-from datetime import timedelta
 import logging
+import sys
+import traceback
 
-from django.apps import apps
+from django.conf import settings
 from django.db import models
-from django.utils.timezone import now
+
+from .events import event_parsing_document_version_finish
+from .parsers import Parser
 
 logger = logging.getLogger(__name__)
 
 
 class DocumentPageContentManager(models.Manager):
-    pass
+    def process_document_version(self, document_version):
+        logger.info(
+            'Starting parsing for document version: %s', document_version
+        )
+        logger.debug('document version: %d', document_version.pk)
+
+        try:
+            Parser.parse_document_version(document_version=document_version)
+        except Exception as exception:
+            logger.exception(
+                'Parsing error for document version: %d; %s',
+                document_version.pk, exception,
+            )
+
+            if settings.DEBUG:
+                result = []
+                type, value, tb = sys.exc_info()
+                result.append('%s: %s' % (type.__name__, value))
+                result.extend(traceback.format_tb(tb))
+                document_version.parsing_errors.create(
+                    result='\n'.join(result)
+                )
+            else:
+                document_version.parsing_errors.create(result=exception)
+        else:
+            logger.info(
+                'Parsing complete for document version: %s', document_version
+            )
+            document_version.parsing_errors.all().delete()
+
+            event_parsing_document_version_finish.commit(
+                action_object=document_version.document,
+                target=document_version
+            )