File metadata: Add file metadata app
Add the file metadata app. This app uses binary wrappers called drivers to extract properties from the file of documents. The default driver uses the exiftool to extract the EXIF record from JPEG images. The exiftool can also extra some properties from other files like PDFs, office files and sound file. Signed-off-by: Roberto Rosario <Roberto.Rosario@mayan-edms.com>
This commit is contained in:
Roberto Rosario
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from __future__ import unicode_literals
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from django.apps import apps
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from django.db.models.signals import post_save
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from django.utils.translation import ugettext_lazy as _
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from kombu import Exchange, Queue
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from mayan.apps.acls import ModelPermission
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from mayan.apps.common import (
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MayanAppConfig, menu_facet, menu_multi_item, menu_object
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)
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from mayan.apps.document_indexing.handlers import handler_index_document
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from mayan.apps.documents.search import document_page_search, document_search
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from mayan.apps.documents.signals import post_version_upload
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from mayan.apps.events import ModelEventType
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from mayan.apps.navigation import SourceColumn
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from mayan.celery import app
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from .drivers import * # NOQA
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from .events import (
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event_file_metadata_document_version_finish,
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event_file_metadata_document_version_submit
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)
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from .handlers import (
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handler_initialize_new_document_type_settings,
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handler_process_document_version
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)
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from .links import (
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link_document_driver_list, link_document_file_metadata_list,
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link_document_submit, link_document_submit_multiple,
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link_document_type_file_metadata_settings
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)
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from .permissions import (
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permission_document_type_file_metadata_setup,
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permission_file_metadata_submit, permission_file_metadata_view
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)
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from .signals import post_document_version_file_metadata_processing
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from .utils import (
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method_document_submit, method_document_version_submit,
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method_get_document_file_metadata,
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method_get_document_version_file_metadata
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)
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class FileMetadataApp(MayanAppConfig):
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app_namespace = 'file_metadata'
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app_url = 'file_metadata'
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has_test = True
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name = 'mayan.apps.file_metadata'
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verbose_name = _('File metadata')
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def ready(self):
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super(FileMetadataApp, self).ready()
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FileMetadataEntry = self.get_model(model_name='FileMetadataEntry')
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DocumentVersionDriverEntry = self.get_model(
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model_name='DocumentVersionDriverEntry'
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)
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Document = apps.get_model(
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app_label='documents', model_name='Document'
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)
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DocumentTypeSettings = self.get_model(
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model_name='DocumentTypeSettings'
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)
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DocumentType = apps.get_model(
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app_label='documents', model_name='DocumentType'
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)
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DocumentVersion = apps.get_model(
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app_label='documents', model_name='DocumentVersion'
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)
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Document.add_to_class(
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name='submit_for_file_metadata_processing',
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value=method_document_submit
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)
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Document.add_to_class(
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name='get_file_metadata',
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value=method_get_document_file_metadata
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)
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DocumentVersion.add_to_class(
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name='submit_for_file_metadata_processing',
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value=method_document_version_submit
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)
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DocumentVersion.add_to_class(
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name='get_file_metadata',
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value=method_get_document_version_file_metadata
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)
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ModelEventType.register(
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model=Document, event_types=(
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event_file_metadata_document_version_finish,
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event_file_metadata_document_version_submit
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)
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)
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ModelPermission.register(
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model=Document, permissions=(
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permission_file_metadata_submit, permission_file_metadata_view,
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)
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)
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ModelPermission.register(
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model=DocumentType, permissions=(
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permission_document_type_file_metadata_setup,
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)
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)
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ModelPermission.register_inheritance(
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model=DocumentTypeSettings, related='document_type',
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)
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SourceColumn(source=FileMetadataEntry, attribute='key')
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SourceColumn(source=FileMetadataEntry, attribute='value')
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SourceColumn(
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source=DocumentVersionDriverEntry, attribute='driver'
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)
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SourceColumn(
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source=DocumentVersionDriverEntry, attribute='driver__internal_name'
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)
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SourceColumn(
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source=DocumentVersionDriverEntry, attribute='get_attribute_count'
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)
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app.conf.task_queues.append(
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Queue(
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'file_metadata', Exchange('file_metadata'),
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routing_key='file_metadata'
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),
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)
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app.conf.task_routes.update(
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{
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'mayan.apps.file_metadata.tasks.task_process_document_version': {
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'queue': 'file_metadata'
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},
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}
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)
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document_search.add_model_field(
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field='versions__file_metadata_drivers__entries__key',
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label=_('File metadata key')
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)
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document_search.add_model_field(
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field='versions__file_metadata_drivers__entries__value',
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label=_('File metadata value')
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)
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document_page_search.add_model_field(
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field='document_version__file_metadata_drivers__entries__key',
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label=_('File metadata key')
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)
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document_page_search.add_model_field(
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field='document_version__file_metadata_drivers__entries__value',
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label=_('File metadata value')
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)
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menu_facet.bind_links(
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links=(link_document_driver_list,), sources=(Document,)
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)
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menu_object.bind_links(
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links=(link_document_submit,), sources=(Document,)
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)
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menu_object.bind_links(
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links=(link_document_type_file_metadata_settings,),
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sources=(DocumentType,)
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)
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menu_object.bind_links(
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links=(link_document_file_metadata_list,),
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sources=(DocumentVersionDriverEntry,)
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)
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menu_multi_item.bind_links(
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links=(link_document_submit_multiple,), sources=(Document,)
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)
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post_save.connect(
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dispatch_uid='file_metadata_handler_initialize_new_document_type_settings',
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receiver=handler_initialize_new_document_type_settings,
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sender=DocumentType
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)
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post_version_upload.connect(
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dispatch_uid='file_metadata_handler_process_document_version',
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receiver=handler_process_document_version, sender=DocumentVersion
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)
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post_document_version_file_metadata_processing.connect(
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dispatch_uid='file_metadata_handler_index_document',
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receiver=handler_index_document,
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sender=DocumentVersion
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)
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