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bibworkflow_object.py
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Thu, Nov 28, 21:17

bibworkflow_object.py
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## This file is part of Invenio.
## Copyright (C) 2012, 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio 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
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
import os
from invenio.bibworkflow_model import WfeObject
from datetime import datetime
from invenio.sqlalchemyutils import db
from invenio.bibworkflow_utils import dictproperty
from invenio.bibworkflow_config import add_log, \
CFG_BIBWORKFLOW_OBJECTS_LOGDIR
from invenio.config import CFG_LOGDIR
class BibWorkflowObject(object):
def __init__(self, data=None, workflow_id=None, version=0, parent_id=None,
id=None, extra_data=None, task_counter=[0], user_id=0):
if isinstance(data, WfeObject):
self.db_obj = data
else:
if id is not None:
self.db_obj = WfeObject.query.filter(WfeObject.id == id).first()
else:
self.db_obj = WfeObject(data=data, workflow_id=workflow_id, \
version=version, parent_id=parent_id, \
task_counter=task_counter, user_id=user_id)
self._create_db_obj()
self.add_log()
def add_log(self):
self.log = add_log(os.path.join(CFG_BIBWORKFLOW_OBJECTS_LOGDIR,
"object_%s_%s.log" % (self.db_obj.id, self.db_obj.workflow_id)),
'object.%s' % self.db_obj.id)
@property
def data(self):
return self.db_obj.data
@data.setter
def data(self, value):
self.db_obj.data = value
def extra_data_get(self, key):
if key not in self.db_obj.extra_data.keys():
raise KeyError
return self.db_obj.extra_data[key]
def extra_data_set(self, key, value):
self.db_obj.extra_data[key] = value
extra_data = dictproperty(fget=extra_data_get, fset=extra_data_set,
doc= "Sets up property")
del extra_data_get, extra_data_set
def __getstate__(self):
state = self.__dict__.copy()
del state['log']
return state
def __setstate__(self, state):
self.__dict__ = state
self.add_log()
def _update_db(self):
db.session.commit()
def _create_db_obj(self):
db.session.add(self.db_obj)
db.session.commit()
def save(self, version=None, task_counter=[0]):
"""
.update() should be changed to create new object,
this will make function more constant and avoid code replication
=> save_object() could return than
return int(o.id)
"""
self.db_obj.task_counter = task_counter
self.db_obj.modified = datetime.now()
if version == 2:
# Processing was interrupted or error happened, we save the current state ("error" version)
if self.db_obj.parent_id is not None:
# We are a child, so we update ourselves.
self._update_db()
return int(self.db_obj.id)
else:
# First time this object has an error/interrupt. Add new child from this object. (version error)
o = WfeObject(data=self.db_obj.data, \
workflow_id=self.db_obj.workflow_id, \
version=2, \
parent_id=int(self.db_obj.id), \
task_counter=self.db_obj.task_counter, \
user_id=self.db_obj.user_id)
db.session.add(o)
db.session.commit()
return int(o.id)
elif version == 1:
# This means the object was successfully run through the workflow. (finished version)
# We update or insert the final object
if self.db_obj.version == 1:
self._update_db()
return int(self.db_obj.id)
else:
if self.db_obj.parent_id is not None:
parent_id = self.db_obj.parent_id
else:
parent_id = self.db_obj.id
o = WfeObject(data=self.db_obj.data, \
workflow_id=self.db_obj.workflow_id, \
version=1, \
parent_id=parent_id, \
task_counter=self.db_obj.task_counter, \
user_id=self.db_obj.user_id)
db.session.add(o)
db.session.commit()
return int(o.id)
else:
# version == 0
# First save of the object (original version)
self._create_db_obj()
self.get_log().info('Saved in db')
def changeStatus(self, message, save=False):
return
def set_log(self, log):
self.log = log
def get_log(self):
return self.log
def __repr__(self):
return "<Object(id: %s, data: %s, workflow_id: %s, version: %s)>" % (
str(self.db_obj.id),
str(self.db_obj.data),
str(self.db_obj.workflow_id),
str(self.db_obj.version),
)

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