def save_last_sync(self, ids, process):
        try:
            spec = {'_id': 'last_sync'}
            document = {'$set': {process: ids}}
            self.db.internal.update(spec, document, upsert=True)
        except Exception as e:
            raise DatabaseException(e)
def testProvenanceItemFiles(self):
        """
        Test item provenance when adding, modifying, and deleting files.
        """
        item = self.item1
        admin = self.admin

        # Test adding a new file to an existing item
        fileData1 = 'Hello world'
        fileData2 = 'Hello world, again'
        fileName1 = 'helloWorld.txt'
        fileName2 = 'helloWorldEdit.txt'
        resp = self.request(
            path='/file', method='POST', user=admin, params={
                'parentType': 'item',
                'parentId': item['_id'],
                'name': fileName1,
                'size': len(fileData1),
                'mimeType': 'text/plain'
            })
        self.assertStatusOk(resp)
        uploadId = resp.json['_id']
        fields = [('offset', 0), ('uploadId', uploadId)]
        files = [('chunk', fileName1, fileData1)]
        resp = self.multipartRequest(
            path='/file/chunk', user=admin, fields=fields, files=files)
        self.assertStatusOk(resp)
        file1 = resp.json
        self._checkProvenance(None, item, 2, admin, 'fileAdded',
                              fileInfo={'fileId': str(file1['_id']),
                                        'new': {'mimeType': 'text/plain',
                                                'size': len(fileData1),
                                                'name': fileName1}})
        # Edit the file name
        resp = self.request(path='/file/%s' % file1['_id'], method='PUT',
                            user=admin, params={'name': fileName2})
        self.assertStatusOk(resp)
        self._checkProvenance(None, item, 3, admin, 'fileUpdate',
                              fileInfo={'fileId': str(file1['_id']),
                                        'old': {'name': fileName1},
                                        'new': {'name': fileName2}})
        # Reupload the file
        resp = self.request(path='/file/%s/contents' % file1['_id'],
                            method='PUT', user=admin,
                            params={'size': len(fileData2)})
        self.assertStatusOk(resp)
        uploadId = resp.json['_id']
        fields = [('offset', 0), ('uploadId', uploadId)]
        files = [('chunk', fileName1, fileData2)]
        resp = self.multipartRequest(
            path='/file/chunk', user=admin, fields=fields, files=files)
        self.assertStatusOk(resp)
        self.assertEqual(file1['_id'], resp.json['_id'])
        self._checkProvenance(None, item, 4, admin, 'fileUpdate',
                              fileInfo={'fileId': str(file1['_id']),
                                        'old': {'size': len(fileData1)},
                                        'new': {'size': len(fileData2)}})
        # Delete the file
        resp = self.request(path='/file/%s' % file1['_id'],
                            method='DELETE', user=admin)
        self.assertStatusOk(resp)
        self._checkProvenance(None, item, 5, admin, 'fileRemoved',
                              fileInfo={'fileId': str(file1['_id']),
                                        'old': {'size': len(fileData2),
                                                'name': fileName2}})