BackUp Odoo 8 Windows erreur zero size file - postgresql

Question

I make a specific development of the db_backup openerp 7 module to running on version 8 Odoo.
So it is properly installed and it does backup
the problem is that the sql file size is zero KB
this is the code backup_scheduler.py
import xmlrpclib
import socket
import os
import time
import base64
from openerp.osv import fields,osv,orm
from openerp import tools, netsvc
from openerp.tools.translate import _
import logging
_logger = logging.getLogger(__name__)
def execute(connector, method, *args):
res = False
try:
res = getattr(connector,method)(*args)
except socket.error,e:
raise e
return res
addons_path = tools.config['addons_path'] + '/auto_backup/DBbackups'
class db_backup(osv.Model):
_name = 'db.backup'
def get_db_list(self, cr, user, ids, host='localhost', port='8069', context={}):
uri = 'http://' + host + ':' + port
conn = xmlrpclib.ServerProxy(uri + '/xmlrpc/db')
db_list = execute(conn, 'list')
return db_list
_columns = {
'host' : fields.char('Host', size=100, required='True'),
'port' : fields.char('Port', size=10, required='True'),
'name' : fields.char('Database', size=100, required='True',help='Database you want to schedule backups for'),
'bkp_dir' : fields.char('Backup Directory', size=100, help='Absolute path for storing the backups', required='True')
}
_defaults = {
'bkp_dir' : lambda *a : addons_path,
'host' : lambda *a : 'localhost',
'port' : lambda *a : '8069'
}
def _check_db_exist(self, cr, user, ids):
for rec in self.browse(cr,user,ids):
db_list = self.get_db_list(cr, user, ids, rec.host, rec.port)
if rec.name in db_list:
return True
return False
_constraints = [
(_check_db_exist, _('Error ! No such database exists!'), [])
]
def schedule_backup(self, cr, user, context={}):
conf_ids= self.search(cr, user, [])
confs = self.browse(cr,user,conf_ids)
for rec in confs:
db_list = self.get_db_list(cr, user, [], rec.host, rec.port)
if rec.name in db_list:
try:
if not os.path.isdir(rec.bkp_dir):
os.makedirs(rec.bkp_dir)
except:
raise
bkp_file='%s_%s.sql' % (rec.name, time.strftime('%Y%m%d_%H_%M_%S'))
file_path = os.path.join(rec.bkp_dir,bkp_file)
fp = open(file_path,'wb')
uri = 'http://' + rec.host + ':' + rec.port
conn = xmlrpclib.ServerProxy(uri + '/xmlrpc/db')
bkp=''
try:
bkp = execute(conn, 'dump', tools.config['admin_passwd'], rec.name)
except:
logger.notifyChannel('backup', netsvc.LOG_INFO, "Could'nt backup database %s. Bad database administrator password for server running at http://%s:%s" %(rec.name, rec.host, rec.port))
continue
bkp = base64.decodestring(bkp)
fp.write(bkp)
fp.close()
else:
logger.notifyChannel('backup', netsvc.LOG_INFO, "database %s doesn't exist on http://%s:%s" %(rec.name, rec.host, rec.port))
db_backup()

Answer 1

This is probably because an error occurs on the backend that does not get propagated back to the client. If you check the server logs at the time you take a backup you will probably see the issue.
Note If you need a script to get a backup from or restore a database to a v7, v8 or v9 server take a look at https://github.com/daramousk/odoo_remote_backup
I have developed a script for this specific reason which you can use or change to resolve your issue.