[REF] osv: moved osv_pool to modules/registry.
[odoo/odoo.git] / openerp / osv / osv.py
1 # -*- coding: utf-8 -*-
2 ##############################################################################
3 #
4 #    OpenERP, Open Source Management Solution
5 #    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
6 #
7 #    This program is free software: you can redistribute it and/or modify
8 #    it under the terms of the GNU Affero General Public License as
9 #    published by the Free Software Foundation, either version 3 of the
10 #    License, or (at your option) any later version.
11 #
12 #    This program is distributed in the hope that it will be useful,
13 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
14 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 #    GNU Affero General Public License for more details.
16 #
17 #    You should have received a copy of the GNU Affero General Public License
18 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
19 #
20 ##############################################################################
21
22 #
23 # OSV: Objects Services
24 #
25
26 import sys
27 import inspect
28 import orm
29 import openerp.netsvc as netsvc
30 import openerp.pooler as pooler
31 import openerp.sql_db as sql_db
32 import copy
33 import logging
34 from psycopg2 import IntegrityError, errorcodes
35 from openerp.tools.func import wraps
36 from openerp.tools.translate import translate
37
38
39 class except_osv(Exception):
40     def __init__(self, name, value, exc_type='warning'):
41         self.name = name
42         self.exc_type = exc_type
43         self.value = value
44         self.args = (exc_type, name)
45
46
47 class object_proxy(netsvc.Service):
48     def __init__(self):
49         self.logger = logging.getLogger('web-services')
50         netsvc.Service.__init__(self, 'object_proxy', audience='')
51         self.exportMethod(self.exec_workflow)
52         self.exportMethod(self.execute)
53
54     def check(f):
55         @wraps(f)
56         def wrapper(self, dbname, *args, **kwargs):
57             """ Wraps around OSV functions and normalises a few exceptions
58             """
59
60             def tr(src, ttype):
61                 # We try to do the same as the _(), but without the frame
62                 # inspection, since we aready are wrapping an osv function
63                 # trans_obj = self.get('ir.translation') cannot work yet :(
64                 ctx = {}
65                 if not kwargs:
66                     if args and isinstance(args[-1], dict):
67                         ctx = args[-1]
68                 elif isinstance(kwargs, dict):
69                     ctx = kwargs.get('context', {})
70
71                 uid = 1
72                 if args and isinstance(args[0], (long, int)):
73                     uid = args[0]
74
75                 lang = ctx and ctx.get('lang')
76                 if not (lang or hasattr(src, '__call__')):
77                     return src
78
79                 # We open a *new* cursor here, one reason is that failed SQL
80                 # queries (as in IntegrityError) will invalidate the current one.
81                 cr = False
82                 
83                 if hasattr(src, '__call__'):
84                     # callable. We need to find the right parameters to call
85                     # the  orm._sql_message(self, cr, uid, ids, context) function,
86                     # or we skip..
87                     # our signature is f(osv_pool, dbname [,uid, obj, method, args])
88                     try:
89                         if args and len(args) > 1:
90                             obj = self.get(args[1])
91                             if len(args) > 3 and isinstance(args[3], (long, int, list)):
92                                 ids = args[3]
93                             else:
94                                 ids = []
95                         cr = sql_db.db_connect(db_name).cursor()
96                         return src(obj, cr, uid, ids, context=(ctx or {}))
97                     except Exception:
98                         pass
99                     finally:
100                         if cr: cr.close()
101                    
102                     return False # so that the original SQL error will
103                                  # be returned, it is the best we have.
104
105                 try:
106                     cr = sql_db.db_connect(db_name).cursor()
107                     res = translate(cr, name=False, source_type=ttype,
108                                     lang=lang, source=src)
109                     if res:
110                         return res
111                     else:
112                         return src
113                 finally:
114                     if cr: cr.close()
115
116             def _(src):
117                 return tr(src, 'code')
118
119             try:
120                 if pooler.get_pool(dbname)._init:
121                     raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
122                 return f(self, dbname, *args, **kwargs)
123             except orm.except_orm, inst:
124                 if inst.name == 'AccessError':
125                     self.logger.debug("AccessError", exc_info=True)
126                 self.abortResponse(1, inst.name, 'warning', inst.value)
127             except except_osv, inst:
128                 self.abortResponse(1, inst.name, inst.exc_type, inst.value)
129             except IntegrityError, inst:
130                 osv_pool = pooler.get_pool(dbname)
131                 for key in osv_pool._sql_error.keys():
132                     if key in inst[0]:
133                         self.abortResponse(1, _('Constraint Error'), 'warning',
134                                         tr(osv_pool._sql_error[key], 'sql_constraint') or inst[0])
135                 if inst.pgcode in (errorcodes.NOT_NULL_VIOLATION, errorcodes.FOREIGN_KEY_VIOLATION, errorcodes.RESTRICT_VIOLATION):
136                     msg = _('The operation cannot be completed, probably due to the following:\n- deletion: you may be trying to delete a record while other records still reference it\n- creation/update: a mandatory field is not correctly set')
137                     self.logger.debug("IntegrityError", exc_info=True)
138                     try:
139                         errortxt = inst.pgerror.replace('«','"').replace('»','"')
140                         if '"public".' in errortxt:
141                             context = errortxt.split('"public".')[1]
142                             model_name = table = context.split('"')[1]
143                         else:
144                             last_quote_end = errortxt.rfind('"')
145                             last_quote_begin = errortxt.rfind('"', 0, last_quote_end)
146                             model_name = table = errortxt[last_quote_begin+1:last_quote_end].strip()
147                         model = table.replace("_",".")
148                         model_obj = osv_pool.get(model)
149                         if model_obj:
150                             model_name = model_obj._description or model_obj._name
151                         msg += _('\n\n[object with reference: %s - %s]') % (model_name, model)
152                     except Exception:
153                         pass
154                     self.abortResponse(1, _('Integrity Error'), 'warning', msg)
155                 else:
156                     self.abortResponse(1, _('Integrity Error'), 'warning', inst[0])
157             except Exception:
158                 self.logger.exception("Uncaught exception")
159                 raise
160
161         return wrapper
162
163     def execute_cr(self, cr, uid, obj, method, *args, **kw):
164         object = pooler.get_pool(cr.dbname).get(obj)
165         if not object:
166             raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
167         return getattr(object, method)(cr, uid, *args, **kw)
168
169     @check
170     def execute(self, db, uid, obj, method, *args, **kw):
171         cr = pooler.get_db(db).cursor()
172         try:
173             try:
174                 if method.startswith('_'):
175                     raise except_osv('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
176                 res = self.execute_cr(cr, uid, obj, method, *args, **kw)
177                 if res is None:
178                     self.logger.warning('The method %s of the object %s can not return `None` !', method, obj)
179                 cr.commit()
180             except Exception:
181                 cr.rollback()
182                 raise
183         finally:
184             cr.close()
185         return res
186
187     def exec_workflow_cr(self, cr, uid, obj, method, *args):
188         wf_service = netsvc.LocalService("workflow")
189         return wf_service.trg_validate(uid, obj, args[0], method, cr)
190
191     @check
192     def exec_workflow(self, db, uid, obj, method, *args):
193         cr = pooler.get_db(db).cursor()
194         try:
195             try:
196                 res = self.exec_workflow_cr(cr, uid, obj, method, *args)
197                 cr.commit()
198             except Exception:
199                 cr.rollback()
200                 raise
201         finally:
202             cr.close()
203         return res
204
205
206 class osv_memory(orm.orm_memory):
207     """ Deprecated class. """
208     pass
209
210
211 class osv(orm.orm):
212     """ Deprecated class. """
213     pass
214
215
216 def start_object_proxy():
217     object_proxy()
218
219 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
220