242 lines
9.9 KiB
Python
242 lines
9.9 KiB
Python
# -*- coding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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#.apidoc title: Objects Services (OSV)
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from functools import wraps
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import logging
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import threading
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from psycopg2 import IntegrityError, OperationalError, errorcodes
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import orm
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import openerp
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import openerp.netsvc as netsvc
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import openerp.pooler as pooler
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import openerp.sql_db as sql_db
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from openerp.tools.translate import translate
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from openerp.osv.orm import MetaModel, Model, TransientModel, AbstractModel
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import openerp.exceptions
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import time
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import random
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import sys
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_logger = logging.getLogger(__name__)
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PG_CONCURRENCY_ERRORS_TO_RETRY = (errorcodes.LOCK_NOT_AVAILABLE, errorcodes.SERIALIZATION_FAILURE, errorcodes.DEADLOCK_DETECTED)
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MAX_TRIES_ON_CONCURRENCY_FAILURE = 5
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# Deprecated.
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class except_osv(Exception):
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def __init__(self, name, value):
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self.name = name
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self.value = value
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self.args = (name, value)
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service = None
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class object_proxy(object):
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def __init__(self):
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global service
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service = self
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def check(f):
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@wraps(f)
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def wrapper(self, dbname, *args, **kwargs):
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""" Wraps around OSV functions and normalises a few exceptions
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"""
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def tr(src, ttype):
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# We try to do the same as the _(), but without the frame
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# inspection, since we aready are wrapping an osv function
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# trans_obj = self.get('ir.translation') cannot work yet :(
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ctx = {}
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if not kwargs:
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if args and isinstance(args[-1], dict):
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ctx = args[-1]
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elif isinstance(kwargs, dict):
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ctx = kwargs.get('context', {})
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uid = 1
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if args and isinstance(args[0], (long, int)):
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uid = args[0]
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lang = ctx and ctx.get('lang')
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if not (lang or hasattr(src, '__call__')):
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return src
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# We open a *new* cursor here, one reason is that failed SQL
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# queries (as in IntegrityError) will invalidate the current one.
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cr = False
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if hasattr(src, '__call__'):
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# callable. We need to find the right parameters to call
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# the orm._sql_message(self, cr, uid, ids, context) function,
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# or we skip..
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# our signature is f(osv_pool, dbname [,uid, obj, method, args])
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try:
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if args and len(args) > 1:
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obj = self.get(args[1])
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if len(args) > 3 and isinstance(args[3], (long, int, list)):
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ids = args[3]
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else:
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ids = []
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cr = sql_db.db_connect(dbname).cursor()
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return src(obj, cr, uid, ids, context=(ctx or {}))
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except Exception:
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pass
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finally:
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if cr: cr.close()
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return False # so that the original SQL error will
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# be returned, it is the best we have.
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try:
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cr = sql_db.db_connect(dbname).cursor()
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res = translate(cr, name=False, source_type=ttype,
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lang=lang, source=src)
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if res:
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return res
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else:
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return src
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finally:
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if cr: cr.close()
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def _(src):
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return tr(src, 'code')
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tries = 0
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while True:
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try:
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if pooler.get_pool(dbname)._init:
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raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
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return f(self, dbname, *args, **kwargs)
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except OperationalError, e:
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# Automatically retry the typical transaction serialization errors
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if e.pgcode not in PG_CONCURRENCY_ERRORS_TO_RETRY:
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raise
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if tries >= MAX_TRIES_ON_CONCURRENCY_FAILURE:
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_logger.warning("%s, maximum number of tries reached" % errorcodes.lookup(e.pgcode))
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raise
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wait_time = random.uniform(0.0, 2 ** tries)
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tries += 1
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_logger.info("%s, retry %d/%d in %.04f sec..." % (errorcodes.lookup(e.pgcode), tries, MAX_TRIES_ON_CONCURRENCY_FAILURE, wait_time))
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time.sleep(wait_time)
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except orm.except_orm, inst:
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_, _, tb = sys.exc_info()
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raise except_osv(inst.name, inst.value), None, tb
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except except_osv:
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raise
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except IntegrityError, inst:
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osv_pool = pooler.get_pool(dbname)
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for key in osv_pool._sql_error.keys():
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if key in inst[0]:
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netsvc.abort_response(1, _('Constraint Error'), 'warning',
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tr(osv_pool._sql_error[key], 'sql_constraint') or inst[0])
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if inst.pgcode in (errorcodes.NOT_NULL_VIOLATION, errorcodes.FOREIGN_KEY_VIOLATION, errorcodes.RESTRICT_VIOLATION):
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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')
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_logger.debug("IntegrityError", exc_info=True)
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try:
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errortxt = inst.pgerror.replace('«','"').replace('»','"')
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if '"public".' in errortxt:
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context = errortxt.split('"public".')[1]
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model_name = table = context.split('"')[1]
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else:
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last_quote_end = errortxt.rfind('"')
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last_quote_begin = errortxt.rfind('"', 0, last_quote_end)
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model_name = table = errortxt[last_quote_begin+1:last_quote_end].strip()
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model = table.replace("_",".")
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model_obj = osv_pool.get(model)
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if model_obj:
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model_name = model_obj._description or model_obj._name
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msg += _('\n\n[object with reference: %s - %s]') % (model_name, model)
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except Exception:
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pass
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netsvc.abort_response(1, _('Integrity Error'), 'warning', msg)
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else:
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netsvc.abort_response(1, _('Integrity Error'), 'warning', inst[0])
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except Exception:
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_logger.exception("Uncaught exception")
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raise
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return wrapper
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def execute_cr(self, cr, uid, obj, method, *args, **kw):
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object = pooler.get_pool(cr.dbname).get(obj)
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if not object:
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raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
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return getattr(object, method)(cr, uid, *args, **kw)
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def execute_kw(self, db, uid, obj, method, args, kw=None):
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return self.execute(db, uid, obj, method, *args, **kw or {})
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@check
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def execute(self, db, uid, obj, method, *args, **kw):
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cr = pooler.get_db(db).cursor()
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try:
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try:
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if method.startswith('_'):
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raise except_osv('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
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res = self.execute_cr(cr, uid, obj, method, *args, **kw)
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if res is None:
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_logger.warning('The method %s of the object %s can not return `None` !', method, obj)
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cr.commit()
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except Exception:
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cr.rollback()
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raise
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finally:
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cr.close()
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return res
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def exec_workflow_cr(self, cr, uid, obj, signal, *args):
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object = pooler.get_pool(cr.dbname).get(obj)
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if not object:
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raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
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res_id = args[0]
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return object._workflow_signal(cr, uid, [res_id], signal)[res_id]
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@check
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def exec_workflow(self, db, uid, obj, signal, *args):
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cr = pooler.get_db(db).cursor()
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try:
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try:
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res = self.exec_workflow_cr(cr, uid, obj, signal, *args)
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cr.commit()
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except Exception:
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cr.rollback()
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raise
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finally:
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cr.close()
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return res
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# deprecated - for backward compatibility.
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osv = Model
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osv_memory = TransientModel
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osv_abstract = AbstractModel # ;-)
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def start_object_proxy():
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object_proxy()
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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