191 lines
8.2 KiB
Python
191 lines
8.2 KiB
Python
# -*- coding: utf-8 -*-
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from functools import wraps
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import logging
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from psycopg2 import IntegrityError, OperationalError, errorcodes
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import random
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import threading
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import time
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import openerp
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from openerp.tools.translate import translate
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from openerp.osv.orm import except_orm
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from contextlib import contextmanager
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import security
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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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def dispatch(method, params):
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(db, uid, passwd ) = params[0:3]
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# set uid tracker - cleaned up at the WSGI
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# dispatching phase in openerp.service.wsgi_server.application
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threading.current_thread().uid = uid
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params = params[3:]
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if method == 'obj_list':
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raise NameError("obj_list has been discontinued via RPC as of 6.0, please query ir.model directly!")
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if method not in ['execute', 'execute_kw', 'exec_workflow']:
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raise NameError("Method not available %s" % method)
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security.check(db,uid,passwd)
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openerp.modules.registry.RegistryManager.check_registry_signaling(db)
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fn = globals()[method]
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res = fn(db, uid, *params)
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openerp.modules.registry.RegistryManager.signal_caches_change(db)
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return res
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def check(f):
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@wraps(f)
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def wrapper(___dbname, *args, **kwargs):
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""" Wraps around OSV functions and normalises a few exceptions
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"""
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dbname = ___dbname # NOTE: this forbid to use "___dbname" as arguments in http routes
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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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if 'context' in kwargs:
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ctx = kwargs['context']
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elif 'kwargs' in kwargs:
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# http entry points such as call_kw()
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ctx = kwargs['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(registry, dbname [,uid, obj, method, args])
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try:
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if args and len(args) > 1:
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# TODO self doesn't exist, but was already wrong before (it was not a registry but just the object_service.
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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 = openerp.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 = openerp.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 openerp.registry(dbname)._init and not openerp.tools.config['test_enable']:
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raise openerp.exceptions.Warning('Currently, this database is not fully loaded and can not be used.')
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return f(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 IntegrityError, inst:
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registry = openerp.registry(dbname)
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for key in registry._sql_error.keys():
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if key in inst[0]:
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raise openerp.osv.orm.except_orm(_('Constraint Error'), tr(registry._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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if model in registry:
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model_obj = registry[model]
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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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raise openerp.osv.orm.except_orm(_('Integrity Error'), msg)
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else:
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raise openerp.osv.orm.except_orm(_('Integrity Error'), inst[0])
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return wrapper
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def execute_cr(cr, uid, obj, method, *args, **kw):
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object = openerp.registry(cr.dbname).get(obj)
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if object is None:
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raise except_orm('Object Error', "Object %s doesn't exist" % obj)
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return getattr(object, method)(cr, uid, *args, **kw)
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def execute_kw(db, uid, obj, method, args, kw=None):
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return execute(db, uid, obj, method, *args, **kw or {})
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@check
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def execute(db, uid, obj, method, *args, **kw):
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threading.currentThread().dbname = db
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with openerp.registry(db).cursor() as cr:
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if method.startswith('_'):
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raise except_orm('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
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res = 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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return res
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def exec_workflow_cr(cr, uid, obj, signal, *args):
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res_id = args[0]
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return execute_cr(cr, uid, obj, 'signal_workflow', [res_id], signal)[res_id]
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@check
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def exec_workflow(db, uid, obj, signal, *args):
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with openerp.registry(db).cursor() as cr:
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return exec_workflow_cr(cr, uid, obj, signal, *args)
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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