92 lines
3.8 KiB
Python
92 lines
3.8 KiB
Python
from __future__ import absolute_import
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import logging
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from django.db import transaction
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from django.utils.translation import ugettext_lazy as _
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from django.utils.translation import ugettext
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from django.db.models.signals import post_save, post_syncdb
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from django.dispatch import receiver
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from django.db.utils import DatabaseError
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from navigation.api import bind_links, register_multi_item_links
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from documents.models import Document, DocumentVersion
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from maintenance.api import register_maintenance_links
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from project_tools.api import register_tool
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from acls.api import class_permissions
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from scheduler.api import register_interval_job
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from .conf.settings import (AUTOMATIC_OCR, QUEUE_PROCESSING_INTERVAL)
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from .models import DocumentQueue, QueueTransformation
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from .tasks import task_process_document_queues
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from .permissions import PERMISSION_OCR_DOCUMENT
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from .exceptions import AlreadyQueued
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from . import models as ocr_models
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logger = logging.getLogger(__name__)
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from .links import (submit_document, re_queue_multiple_document,
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queue_document_multiple_delete, document_queue_disable,
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document_queue_enable, all_document_ocr_cleanup, queue_document_list,
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ocr_tool_link, setup_queue_transformation_list,
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setup_queue_transformation_create, setup_queue_transformation_edit,
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setup_queue_transformation_delete)
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bind_links([Document], [submit_document])
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bind_links([DocumentQueue], [document_queue_disable, document_queue_enable, setup_queue_transformation_list])
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bind_links([QueueTransformation], [setup_queue_transformation_edit, setup_queue_transformation_delete])
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register_multi_item_links(['queue_document_list'], [re_queue_multiple_document, queue_document_multiple_delete])
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bind_links(['setup_queue_transformation_create', 'setup_queue_transformation_edit', 'setup_queue_transformation_delete', 'document_queue_disable', 'document_queue_enable', 'queue_document_list', 'setup_queue_transformation_list'], [queue_document_list], menu_name='secondary_menu')
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bind_links(['setup_queue_transformation_edit', 'setup_queue_transformation_delete', 'setup_queue_transformation_list', 'setup_queue_transformation_create'], [setup_queue_transformation_create], menu_name='sidebar')
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register_maintenance_links([all_document_ocr_cleanup], namespace='ocr', title=_(u'OCR'))
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@transaction.commit_on_success
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def create_default_queue():
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try:
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default_queue, created = DocumentQueue.objects.get_or_create(name='default')
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except DatabaseError:
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transaction.rollback()
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else:
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if created:
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default_queue.label = ugettext(u'Default')
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default_queue.save()
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@receiver(post_save, dispatch_uid='document_post_save', sender=DocumentVersion)
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def document_post_save(sender, instance, **kwargs):
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logger.debug('received post save signal')
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logger.debug('instance: %s' % instance)
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if kwargs.get('created', False):
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if AUTOMATIC_OCR:
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try:
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DocumentQueue.objects.queue_document(instance.document)
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except AlreadyQueued:
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pass
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# Disabled because it appears Django execute signals using the same
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# process of the signal emiter effectively blocking the view until
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# the OCR process completes which could take several minutes :/
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#@receiver(post_save, dispatch_uid='call_queue', sender=QueueDocument)
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#def call_queue(sender, **kwargs):
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# if kwargs.get('created', False):
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# logger.debug('got call_queue signal: %s' % kwargs)
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# task_process_document_queues()
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@receiver(post_syncdb, dispatch_uid='create_default_queue', sender=ocr_models)
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def create_default_queue_signal_handler(sender, **kwargs):
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create_default_queue()
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register_interval_job('task_process_document_queues', _(u'Checks the OCR queue for pending documents.'), task_process_document_queues, seconds=QUEUE_PROCESSING_INTERVAL)
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register_tool(ocr_tool_link)
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class_permissions(Document, [
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PERMISSION_OCR_DOCUMENT,
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])
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