236 lines
7.8 KiB
Python
236 lines
7.8 KiB
Python
# -*- encoding: 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>). All Rights Reserved
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# $Id$
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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 General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (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 General Public License for more details.
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#
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# You should have received a copy of the GNU 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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import netsvc
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from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT, ISOLATION_LEVEL_SERIALIZABLE
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from psycopg2.pool import ThreadedConnectionPool
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from psycopg2.psycopg1 import cursor as psycopg1cursor
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import psycopg2.extensions
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psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
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types_mapping = {
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'date': (1082,),
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'time': (1083,),
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'datetime': (1114,),
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}
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def unbuffer(symb, cr):
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if symb is None: return None
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return str(symb)
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def undecimalize(symb, cr):
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if symb is None: return None
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return float(symb)
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for name, typeoid in types_mapping.items():
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psycopg2.extensions.register_type(psycopg2.extensions.new_type(typeoid, name, lambda x, cr: x))
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psycopg2.extensions.register_type(psycopg2.extensions.new_type((700, 701, 1700,), 'float', undecimalize))
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import tools
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import re
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from mx import DateTime as mdt
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re_from = re.compile('.* from "?([a-zA-Z_0-9]+)"? .*$');
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re_into = re.compile('.* into "?([a-zA-Z_0-9]+)"? .*$');
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def log(msg, lvl=netsvc.LOG_DEBUG):
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logger = netsvc.Logger()
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logger.notifyChannel('sql', lvl, msg)
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class Cursor(object):
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IN_MAX = 1000
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sql_from_log = {}
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sql_into_log = {}
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sql_log = False
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count = 0
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def check(f):
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from tools.func import wraps
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@wraps(f)
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def wrapper(self, *args, **kwargs):
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if not hasattr(self, '_obj'):
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raise psycopg2.ProgrammingError('Unable to use the cursor after having closing it')
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return f(self, *args, **kwargs)
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return wrapper
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def __init__(self, pool):
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self._pool = pool
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self._cnx = pool.getconn()
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self._obj = self._cnx.cursor(cursor_factory=psycopg1cursor)
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self.autocommit(False)
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self.dbname = pool.dbname
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from inspect import stack
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self.__caller = tuple(stack()[2][1:3])
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def __del__(self):
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if hasattr(self, '_obj'):
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# Oops. 'self' has not been closed explicitly.
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# The cursor will be deleted by the garbage collector,
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# but the database connection is not put back into the connection
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# pool, preventing some operation on the database like dropping it.
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# This can also lead to a server overload.
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msg = "Cursor not closed explicitly\n" \
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"Cursor was created at %s:%s" % self.__caller
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log(msg, netsvc.LOG_WARNING)
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self.close()
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@check
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def execute(self, query, params=None):
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self.count+=1
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if '%d' in query or '%f' in query:
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log(query, netsvc.LOG_WARNING)
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log("SQL queries mustn't containt %d or %f anymore. Use only %s", netsvc.LOG_WARNING)
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if params:
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query = query.replace('%d', '%s').replace('%f', '%s')
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if self.sql_log:
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now = mdt.now()
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res = self._obj.execute(query, params)
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if self.sql_log:
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log("query: %s" % self._obj.query)
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self.count+=1
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res_from = re_from.match(query.lower())
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if res_from:
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self.sql_from_log.setdefault(res_from.group(1), [0, 0])
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self.sql_from_log[res_from.group(1)][0] += 1
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self.sql_from_log[res_from.group(1)][1] += mdt.now() - now
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res_into = re_into.match(query.lower())
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if res_into:
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self.sql_into_log.setdefault(res_into.group(1), [0, 0])
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self.sql_into_log[res_into.group(1)][0] += 1
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self.sql_into_log[res_into.group(1)][1] += mdt.now() - now
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return res
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def print_log(self):
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def process(type):
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sqllogs = {'from':self.sql_from_log, 'into':self.sql_into_log}
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if not sqllogs[type]:
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return
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sqllogitems = sqllogs[type].items()
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sqllogitems.sort(key=lambda k: k[1][1])
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sum = 0
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log("SQL LOG %s:" % (type,))
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for r in sqllogitems:
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log("table: %s: %s/%s" %(r[0], str(r[1][1]), r[1][0]))
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sum+= r[1][1]
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log("SUM:%s/%d" % (sum, self.count))
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sqllogs[type].clear()
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process('from')
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process('into')
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self.count = 0
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self.sql_log = False
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@check
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def close(self):
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self.print_log()
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self._obj.close()
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# This force the cursor to be freed, and thus, available again. It is
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# important because otherwise we can overload the server very easily
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# because of a cursor shortage (because cursors are not garbage
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# collected as fast as they should). The problem is probably due in
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# part because browse records keep a reference to the cursor.
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del self._obj
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self._pool.putconn(self._cnx)
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@check
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def autocommit(self, on):
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self._cnx.set_isolation_level([ISOLATION_LEVEL_SERIALIZABLE, ISOLATION_LEVEL_AUTOCOMMIT][bool(on)])
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@check
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def commit(self):
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return self._cnx.commit()
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@check
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def rollback(self):
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return self._cnx.rollback()
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@check
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def __getattr__(self, name):
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return getattr(self._obj, name)
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class ConnectionPool(object):
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def __init__(self, pool, dbname):
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self.dbname = dbname
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self._pool = pool
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def cursor(self):
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return Cursor(self)
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def __getattr__(self, name):
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return getattr(self._pool, name)
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class PoolManager(object):
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_pools = {}
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_dsn = None
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maxconn = int(tools.config['db_maxconn']) or 64
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@classmethod
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def dsn(cls, db_name):
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if cls._dsn is None:
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cls._dsn = ''
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for p in ('host', 'port', 'user', 'password'):
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cfg = tools.config['db_' + p]
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if cfg:
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cls._dsn += '%s=%s ' % (p, cfg)
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return '%s dbname=%s' % (cls._dsn, db_name)
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@classmethod
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def get(cls, db_name):
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if db_name not in cls._pools:
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logger = netsvc.Logger()
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try:
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logger.notifyChannel('dbpool', netsvc.LOG_INFO, 'Connecting to %s' % (db_name,))
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cls._pools[db_name] = ConnectionPool(ThreadedConnectionPool(1, cls.maxconn, cls.dsn(db_name)), db_name)
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except Exception, e:
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logger.notifyChannel('dbpool', netsvc.LOG_ERROR, 'Unable to connect to %s: %s' %
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(db_name, str(e)))
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raise
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return cls._pools[db_name]
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@classmethod
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def close(cls, db_name):
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if db_name in cls._pools:
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logger = netsvc.Logger()
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logger.notifyChannel('dbpool', netsvc.LOG_INFO, 'Closing all connections to %s' % (db_name,))
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cls._pools[db_name].closeall()
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del cls._pools[db_name]
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def db_connect(db_name, serialize=0):
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return PoolManager.get(db_name)
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def close_db(db_name):
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PoolManager.close(db_name)
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tools.cache.clean_caches_for_db(db_name)
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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