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###################################################################################
#
# Copyright (c) 2017-2019 MuK IT GmbH.
#
# This file is part of MuK Utils
# (see https://mukit.at).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###################################################################################
import math
import base64
import logging
import mimetypes
from odoo import registry, api, models, _
from odoo.tools.mimetypes import guess_mimetype
from odoo.tools.misc import split_every
from odoo.exceptions import AccessError
_logger = logging.getLogger(__name__)
class IrAttachment(models.Model):
_inherit = 'ir.attachment'
#----------------------------------------------------------
# Helper
#----------------------------------------------------------
@api.model
def _get_datas_inital_vals(self):
return {
'store_fname': False,
'db_datas': False,
}
@api.model
def _update_datas_vals(self, vals, attach, bin_data):
vals.update({
'file_size': len(bin_data),
'checksum': self._compute_checksum(bin_data),
'index_content': self._index(bin_data, attach.datas_fname, attach.mimetype),
})
return vals
@api.model
def _get_datas_clean_vals(self, attach):
vals = {}
if attach.store_fname:
vals['store_fname'] = attach.store_fname
return vals
@api.model
def _clean_datas_after_write(self, vals):
if 'store_fname' in vals:
self._file_delete(vals['store_fname'])
#----------------------------------------------------------
# Actions
#----------------------------------------------------------
@api.multi
def action_migrate(self):
self.migrate()
#----------------------------------------------------------
# Functions
#----------------------------------------------------------
@api.model
def storage_locations(self):
return ['db', 'file']
@api.model
def force_storage(self):
if not self.env.user._is_admin():
raise AccessError(_('Only administrators can execute this action.'))
storage_domain = {
'db': ('db_datas', '=', False),
'file': ('store_fname', '=', False),
}
record_domain = [
'&', ('type', '=', 'binary'),
'&', storage_domain[self._storage()],
'|', ('res_field', '=', False), ('res_field', '!=', False)
]
self.search(record_domain).migrate(batch_size=100)
return True
@api.multi
def migrate(self, batch_size=None):
commit_on_batch = bool(batch_size)
batch_size = batch_size or len(self)
storage_location = self._storage().upper()
batches = math.ceil(len(self) / batch_size)
for index, attachment in enumerate(self, start=1):
_logger.info("Migrate Attachment %s of %s to %s [Batch %s of %s]",
index % batch_size or batch_size, batch_size, storage_location,
math.ceil(index / batch_size), batches
)
attachment.with_context(migration=True).write({
'datas': attachment.datas
})
if commit_on_batch and not index % batch_size:
self.env.cr.commit()
#----------------------------------------------------------
# Read
#----------------------------------------------------------
@api.multi
def _compute_mimetype(self, values):
if self.env.context.get('migration') and len(self) == 1:
return self.mimetype or 'application/octet-stream'
else:
return super(IrAttachment, self)._compute_mimetype(values)
#----------------------------------------------------------
# Create, Write, Delete
#----------------------------------------------------------
@api.multi
def _inverse_datas(self):
location = self._storage()
for attach in self:
value = attach.datas
bin_data = base64.b64decode(value) if value else b''
vals = self._get_datas_inital_vals()
vals = self._update_datas_vals(vals, attach, bin_data)
if value and location != 'db':
vals['store_fname'] = self._file_write(value, vals['checksum'])
else:
vals['db_datas'] = value
clean_vals = self._get_datas_clean_vals(attach)
models.Model.write(attach.sudo(), vals)
self._clean_datas_after_write(clean_vals)