636 lines
23 KiB
Python
636 lines
23 KiB
Python
# -*- coding: utf-8 -*-
|
|
##############################################################################
|
|
#
|
|
# OpenERP, Open Source Management Solution
|
|
# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
|
|
# Copyright (C) 2010-2014 OpenERP s.a. (<http://openerp.com>).
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Affero General Public License as
|
|
# published by the Free Software Foundation, either version 3 of the
|
|
# License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Affero General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Affero General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
##############################################################################
|
|
|
|
|
|
"""
|
|
The PostgreSQL connector is a connectivity layer between the OpenERP code and
|
|
the database, *not* a database abstraction toolkit. Database abstraction is what
|
|
the ORM does, in fact.
|
|
"""
|
|
|
|
from contextlib import contextmanager
|
|
from functools import wraps
|
|
import logging
|
|
import urlparse
|
|
import uuid
|
|
import psycopg2.extras
|
|
import psycopg2.extensions
|
|
from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT, ISOLATION_LEVEL_READ_COMMITTED, ISOLATION_LEVEL_REPEATABLE_READ
|
|
from psycopg2.pool import PoolError
|
|
|
|
psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
|
|
|
|
_logger = logging.getLogger(__name__)
|
|
|
|
types_mapping = {
|
|
'date': (1082,),
|
|
'time': (1083,),
|
|
'datetime': (1114,),
|
|
}
|
|
|
|
def unbuffer(symb, cr):
|
|
if symb is None:
|
|
return None
|
|
return str(symb)
|
|
|
|
def undecimalize(symb, cr):
|
|
if symb is None:
|
|
return None
|
|
return float(symb)
|
|
|
|
for name, typeoid in types_mapping.items():
|
|
psycopg2.extensions.register_type(psycopg2.extensions.new_type(typeoid, name, lambda x, cr: x))
|
|
psycopg2.extensions.register_type(psycopg2.extensions.new_type((700, 701, 1700,), 'float', undecimalize))
|
|
|
|
|
|
import tools
|
|
from tools.func import frame_codeinfo
|
|
from datetime import datetime as mdt
|
|
from datetime import timedelta
|
|
import threading
|
|
from inspect import currentframe
|
|
|
|
import re
|
|
re_from = re.compile('.* from "?([a-zA-Z_0-9]+)"? .*$')
|
|
re_into = re.compile('.* into "?([a-zA-Z_0-9]+)"? .*$')
|
|
|
|
sql_counter = 0
|
|
|
|
class Cursor(object):
|
|
"""Represents an open transaction to the PostgreSQL DB backend,
|
|
acting as a lightweight wrapper around psycopg2's
|
|
``cursor`` objects.
|
|
|
|
``Cursor`` is the object behind the ``cr`` variable used all
|
|
over the OpenERP code.
|
|
|
|
.. rubric:: Transaction Isolation
|
|
|
|
One very important property of database transactions is the
|
|
level of isolation between concurrent transactions.
|
|
The SQL standard defines four levels of transaction isolation,
|
|
ranging from the most strict *Serializable* level, to the least
|
|
strict *Read Uncommitted* level. These levels are defined in
|
|
terms of the phenomena that must not occur between concurrent
|
|
transactions, such as *dirty read*, etc.
|
|
In the context of a generic business data management software
|
|
such as OpenERP, we need the best guarantees that no data
|
|
corruption can ever be cause by simply running multiple
|
|
transactions in parallel. Therefore, the preferred level would
|
|
be the *serializable* level, which ensures that a set of
|
|
transactions is guaranteed to produce the same effect as
|
|
running them one at a time in some order.
|
|
|
|
However, most database management systems implement a limited
|
|
serializable isolation in the form of
|
|
`snapshot isolation <http://en.wikipedia.org/wiki/Snapshot_isolation>`_,
|
|
providing most of the same advantages as True Serializability,
|
|
with a fraction of the performance cost.
|
|
With PostgreSQL up to version 9.0, this snapshot isolation was
|
|
the implementation of both the ``REPEATABLE READ`` and
|
|
``SERIALIZABLE`` levels of the SQL standard.
|
|
As of PostgreSQL 9.1, the previous snapshot isolation implementation
|
|
was kept for ``REPEATABLE READ``, while a new ``SERIALIZABLE``
|
|
level was introduced, providing some additional heuristics to
|
|
detect a concurrent update by parallel transactions, and forcing
|
|
one of them to rollback.
|
|
|
|
OpenERP implements its own level of locking protection
|
|
for transactions that are highly likely to provoke concurrent
|
|
updates, such as stock reservations or document sequences updates.
|
|
Therefore we mostly care about the properties of snapshot isolation,
|
|
but we don't really need additional heuristics to trigger transaction
|
|
rollbacks, as we are taking care of triggering instant rollbacks
|
|
ourselves when it matters (and we can save the additional performance
|
|
hit of these heuristics).
|
|
|
|
As a result of the above, we have selected ``REPEATABLE READ`` as
|
|
the default transaction isolation level for OpenERP cursors, as
|
|
it will be mapped to the desired ``snapshot isolation`` level for
|
|
all supported PostgreSQL version (8.3 - 9.x).
|
|
|
|
Note: up to psycopg2 v.2.4.2, psycopg2 itself remapped the repeatable
|
|
read level to serializable before sending it to the database, so it would
|
|
actually select the new serializable mode on PostgreSQL 9.1. Make
|
|
sure you use psycopg2 v2.4.2 or newer if you use PostgreSQL 9.1 and
|
|
the performance hit is a concern for you.
|
|
|
|
.. attribute:: cache
|
|
|
|
Cache dictionary with a "request" (-ish) lifecycle, only lives as
|
|
long as the cursor itself does and proactively cleared when the
|
|
cursor is closed.
|
|
|
|
This cache should *only* be used to store repeatable reads as it
|
|
ignores rollbacks and savepoints, it should not be used to store
|
|
*any* data which may be modified during the life of the cursor.
|
|
|
|
"""
|
|
IN_MAX = 1000 # decent limit on size of IN queries - guideline = Oracle limit
|
|
|
|
def check(f):
|
|
@wraps(f)
|
|
def wrapper(self, *args, **kwargs):
|
|
if self._closed:
|
|
msg = 'Unable to use a closed cursor.'
|
|
if self.__closer:
|
|
msg += ' It was closed at %s, line %s' % self.__closer
|
|
raise psycopg2.OperationalError(msg)
|
|
return f(self, *args, **kwargs)
|
|
return wrapper
|
|
|
|
def __init__(self, pool, dbname, dsn, serialized=True):
|
|
self.sql_from_log = {}
|
|
self.sql_into_log = {}
|
|
|
|
# default log level determined at cursor creation, could be
|
|
# overridden later for debugging purposes
|
|
self.sql_log = _logger.isEnabledFor(logging.DEBUG)
|
|
|
|
self.sql_log_count = 0
|
|
|
|
# avoid the call of close() (by __del__) if an exception
|
|
# is raised by any of the following initialisations
|
|
self._closed = True
|
|
|
|
self.__pool = pool
|
|
self.dbname = dbname
|
|
# Whether to enable snapshot isolation level for this cursor.
|
|
# see also the docstring of Cursor.
|
|
self._serialized = serialized
|
|
|
|
self._cnx = pool.borrow(dsn)
|
|
self._obj = self._cnx.cursor()
|
|
if self.sql_log:
|
|
self.__caller = frame_codeinfo(currentframe(), 2)
|
|
else:
|
|
self.__caller = False
|
|
self._closed = False # real initialisation value
|
|
self.autocommit(False)
|
|
self.__closer = False
|
|
|
|
self._default_log_exceptions = True
|
|
|
|
self.cache = {}
|
|
|
|
def __build_dict(self, row):
|
|
return {d.name: row[i] for i, d in enumerate(self._obj.description)}
|
|
def dictfetchone(self):
|
|
row = self._obj.fetchone()
|
|
return row and self.__build_dict(row)
|
|
def dictfetchmany(self, size):
|
|
return map(self.__build_dict, self._obj.fetchmany(size))
|
|
def dictfetchall(self):
|
|
return map(self.__build_dict, self._obj.fetchall())
|
|
|
|
def __del__(self):
|
|
if not self._closed and not self._cnx.closed:
|
|
# Oops. 'self' has not been closed explicitly.
|
|
# The cursor will be deleted by the garbage collector,
|
|
# but the database connection is not put back into the connection
|
|
# pool, preventing some operation on the database like dropping it.
|
|
# This can also lead to a server overload.
|
|
msg = "Cursor not closed explicitly\n"
|
|
if self.__caller:
|
|
msg += "Cursor was created at %s:%s" % self.__caller
|
|
else:
|
|
msg += "Please enable sql debugging to trace the caller."
|
|
_logger.warning(msg)
|
|
self._close(True)
|
|
|
|
@check
|
|
def execute(self, query, params=None, log_exceptions=None):
|
|
if '%d' in query or '%f' in query:
|
|
_logger.warning(query)
|
|
_logger.warning("SQL queries cannot contain %d or %f anymore. Use only %s")
|
|
if params and not isinstance(params, (tuple, list, dict)):
|
|
_logger.error("SQL query parameters should be a tuple, list or dict; got %r", params)
|
|
raise ValueError("SQL query parameters should be a tuple, list or dict; got %r" % (params,))
|
|
|
|
if self.sql_log:
|
|
now = mdt.now()
|
|
|
|
try:
|
|
params = params or None
|
|
res = self._obj.execute(query, params)
|
|
except psycopg2.ProgrammingError, pe:
|
|
if self._default_log_exceptions if log_exceptions is None else log_exceptions:
|
|
_logger.error("Programming error: %s, in query %s", pe, query)
|
|
raise
|
|
except Exception:
|
|
if self._default_log_exceptions if log_exceptions is None else log_exceptions:
|
|
_logger.exception("bad query: %s", self._obj.query or query)
|
|
raise
|
|
|
|
# simple query count is always computed
|
|
self.sql_log_count += 1
|
|
|
|
# advanced stats only if sql_log is enabled
|
|
if self.sql_log:
|
|
delay = mdt.now() - now
|
|
delay = delay.seconds * 1E6 + delay.microseconds
|
|
|
|
_logger.debug("query: %s", self._obj.query)
|
|
res_from = re_from.match(query.lower())
|
|
if res_from:
|
|
self.sql_from_log.setdefault(res_from.group(1), [0, 0])
|
|
self.sql_from_log[res_from.group(1)][0] += 1
|
|
self.sql_from_log[res_from.group(1)][1] += delay
|
|
res_into = re_into.match(query.lower())
|
|
if res_into:
|
|
self.sql_into_log.setdefault(res_into.group(1), [0, 0])
|
|
self.sql_into_log[res_into.group(1)][0] += 1
|
|
self.sql_into_log[res_into.group(1)][1] += delay
|
|
return res
|
|
|
|
def split_for_in_conditions(self, ids):
|
|
"""Split a list of identifiers into one or more smaller tuples
|
|
safe for IN conditions, after uniquifying them."""
|
|
return tools.misc.split_every(self.IN_MAX, set(ids))
|
|
|
|
def print_log(self):
|
|
global sql_counter
|
|
|
|
if not self.sql_log:
|
|
return
|
|
def process(type):
|
|
sqllogs = {'from': self.sql_from_log, 'into': self.sql_into_log}
|
|
sum = 0
|
|
if sqllogs[type]:
|
|
sqllogitems = sqllogs[type].items()
|
|
sqllogitems.sort(key=lambda k: k[1][1])
|
|
_logger.debug("SQL LOG %s:", type)
|
|
sqllogitems.sort(lambda x, y: cmp(x[1][0], y[1][0]))
|
|
for r in sqllogitems:
|
|
delay = timedelta(microseconds=r[1][1])
|
|
_logger.debug("table: %s: %s/%s", r[0], delay, r[1][0])
|
|
sum += r[1][1]
|
|
sqllogs[type].clear()
|
|
sum = timedelta(microseconds=sum)
|
|
_logger.debug("SUM %s:%s/%d [%d]", type, sum, self.sql_log_count, sql_counter)
|
|
sqllogs[type].clear()
|
|
process('from')
|
|
process('into')
|
|
self.sql_log_count = 0
|
|
self.sql_log = False
|
|
|
|
@check
|
|
def close(self):
|
|
return self._close(False)
|
|
|
|
def _close(self, leak=False):
|
|
global sql_counter
|
|
|
|
if not self._obj:
|
|
return
|
|
|
|
del self.cache
|
|
|
|
if self.sql_log:
|
|
self.__closer = frame_codeinfo(currentframe(), 3)
|
|
|
|
# simple query count is always computed
|
|
sql_counter += self.sql_log_count
|
|
|
|
# advanced stats only if sql_log is enabled
|
|
self.print_log()
|
|
|
|
self._obj.close()
|
|
|
|
# This force the cursor to be freed, and thus, available again. It is
|
|
# important because otherwise we can overload the server very easily
|
|
# because of a cursor shortage (because cursors are not garbage
|
|
# collected as fast as they should). The problem is probably due in
|
|
# part because browse records keep a reference to the cursor.
|
|
del self._obj
|
|
self._closed = True
|
|
|
|
# Clean the underlying connection.
|
|
self._cnx.rollback()
|
|
|
|
if leak:
|
|
self._cnx.leaked = True
|
|
else:
|
|
chosen_template = tools.config['db_template']
|
|
templates_list = tuple(set(['template0', 'template1', 'postgres', chosen_template]))
|
|
keep_in_pool = self.dbname not in templates_list
|
|
self.__pool.give_back(self._cnx, keep_in_pool=keep_in_pool)
|
|
|
|
@check
|
|
def autocommit(self, on):
|
|
if on:
|
|
isolation_level = ISOLATION_LEVEL_AUTOCOMMIT
|
|
else:
|
|
# If a serializable cursor was requested, we
|
|
# use the appropriate PotsgreSQL isolation level
|
|
# that maps to snaphsot isolation.
|
|
# For all supported PostgreSQL versions (8.3-9.x),
|
|
# this is currently the ISOLATION_REPEATABLE_READ.
|
|
# See also the docstring of this class.
|
|
# NOTE: up to psycopg 2.4.2, repeatable read
|
|
# is remapped to serializable before being
|
|
# sent to the database, so it is in fact
|
|
# unavailable for use with pg 9.1.
|
|
isolation_level = \
|
|
ISOLATION_LEVEL_REPEATABLE_READ \
|
|
if self._serialized \
|
|
else ISOLATION_LEVEL_READ_COMMITTED
|
|
self._cnx.set_isolation_level(isolation_level)
|
|
|
|
@check
|
|
def commit(self):
|
|
""" Perform an SQL `COMMIT`
|
|
"""
|
|
return self._cnx.commit()
|
|
|
|
@check
|
|
def rollback(self):
|
|
""" Perform an SQL `ROLLBACK`
|
|
"""
|
|
return self._cnx.rollback()
|
|
|
|
def __enter__(self):
|
|
""" Using the cursor as a contextmanager automatically commits and
|
|
closes it::
|
|
|
|
with cr:
|
|
cr.execute(...)
|
|
|
|
# cr is committed if no failure occurred
|
|
# cr is closed in any case
|
|
"""
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_value, traceback):
|
|
if exc_type is None:
|
|
self.commit()
|
|
self.close()
|
|
|
|
@contextmanager
|
|
@check
|
|
def savepoint(self):
|
|
"""context manager entering in a new savepoint"""
|
|
name = uuid.uuid1().hex
|
|
self.execute('SAVEPOINT "%s"' % name)
|
|
try:
|
|
yield
|
|
self.execute('RELEASE SAVEPOINT "%s"' % name)
|
|
except:
|
|
self.execute('ROLLBACK TO SAVEPOINT "%s"' % name)
|
|
raise
|
|
|
|
@check
|
|
def __getattr__(self, name):
|
|
return getattr(self._obj, name)
|
|
|
|
class TestCursor(Cursor):
|
|
""" A cursor to be used for tests. It keeps the transaction open across
|
|
several requests, and simulates committing, rolling back, and closing.
|
|
"""
|
|
def __init__(self, *args, **kwargs):
|
|
super(TestCursor, self).__init__(*args, **kwargs)
|
|
# in order to simulate commit and rollback, the cursor maintains a
|
|
# savepoint at its last commit
|
|
self.execute("SAVEPOINT test_cursor")
|
|
# we use a lock to serialize concurrent requests
|
|
self._lock = threading.RLock()
|
|
|
|
def acquire(self):
|
|
self._lock.acquire()
|
|
|
|
def release(self):
|
|
self._lock.release()
|
|
|
|
def force_close(self):
|
|
super(TestCursor, self).close()
|
|
|
|
def close(self):
|
|
if not self._closed:
|
|
self.rollback() # for stuff that has not been committed
|
|
self.release()
|
|
|
|
def autocommit(self, on):
|
|
_logger.debug("TestCursor.autocommit(%r) does nothing", on)
|
|
|
|
def commit(self):
|
|
self.execute("RELEASE SAVEPOINT test_cursor")
|
|
self.execute("SAVEPOINT test_cursor")
|
|
|
|
def rollback(self):
|
|
self.execute("ROLLBACK TO SAVEPOINT test_cursor")
|
|
self.execute("SAVEPOINT test_cursor")
|
|
|
|
class PsycoConnection(psycopg2.extensions.connection):
|
|
pass
|
|
|
|
class ConnectionPool(object):
|
|
""" The pool of connections to database(s)
|
|
|
|
Keep a set of connections to pg databases open, and reuse them
|
|
to open cursors for all transactions.
|
|
|
|
The connections are *not* automatically closed. Only a close_db()
|
|
can trigger that.
|
|
"""
|
|
|
|
def locked(fun):
|
|
@wraps(fun)
|
|
def _locked(self, *args, **kwargs):
|
|
self._lock.acquire()
|
|
try:
|
|
return fun(self, *args, **kwargs)
|
|
finally:
|
|
self._lock.release()
|
|
return _locked
|
|
|
|
def __init__(self, maxconn=64):
|
|
self._connections = []
|
|
self._maxconn = max(maxconn, 1)
|
|
self._lock = threading.Lock()
|
|
|
|
def __repr__(self):
|
|
used = len([1 for c, u in self._connections[:] if u])
|
|
count = len(self._connections)
|
|
return "ConnectionPool(used=%d/count=%d/max=%d)" % (used, count, self._maxconn)
|
|
|
|
def _debug(self, msg, *args):
|
|
_logger.debug(('%r ' + msg), self, *args)
|
|
|
|
@locked
|
|
def borrow(self, dsn):
|
|
# free dead and leaked connections
|
|
for i, (cnx, _) in tools.reverse_enumerate(self._connections):
|
|
if cnx.closed:
|
|
self._connections.pop(i)
|
|
self._debug('Removing closed connection at index %d: %r', i, cnx.dsn)
|
|
continue
|
|
if getattr(cnx, 'leaked', False):
|
|
delattr(cnx, 'leaked')
|
|
self._connections.pop(i)
|
|
self._connections.append((cnx, False))
|
|
_logger.warning('%r: Free leaked connection to %r', self, cnx.dsn)
|
|
|
|
for i, (cnx, used) in enumerate(self._connections):
|
|
if not used and cnx._original_dsn == dsn:
|
|
try:
|
|
cnx.reset()
|
|
except psycopg2.OperationalError:
|
|
self._debug('Cannot reset connection at index %d: %r', i, cnx.dsn)
|
|
# psycopg2 2.4.4 and earlier do not allow closing a closed connection
|
|
if not cnx.closed:
|
|
cnx.close()
|
|
continue
|
|
self._connections.pop(i)
|
|
self._connections.append((cnx, True))
|
|
self._debug('Borrow existing connection to %r at index %d', cnx.dsn, i)
|
|
|
|
return cnx
|
|
|
|
if len(self._connections) >= self._maxconn:
|
|
# try to remove the oldest connection not used
|
|
for i, (cnx, used) in enumerate(self._connections):
|
|
if not used:
|
|
self._connections.pop(i)
|
|
if not cnx.closed:
|
|
cnx.close()
|
|
self._debug('Removing old connection at index %d: %r', i, cnx.dsn)
|
|
break
|
|
else:
|
|
# note: this code is called only if the for loop has completed (no break)
|
|
raise PoolError('The Connection Pool Is Full')
|
|
|
|
try:
|
|
result = psycopg2.connect(dsn=dsn, connection_factory=PsycoConnection)
|
|
except psycopg2.Error:
|
|
_logger.exception('Connection to the database failed')
|
|
raise
|
|
result._original_dsn = dsn
|
|
self._connections.append((result, True))
|
|
self._debug('Create new connection')
|
|
return result
|
|
|
|
@locked
|
|
def give_back(self, connection, keep_in_pool=True):
|
|
self._debug('Give back connection to %r', connection.dsn)
|
|
for i, (cnx, used) in enumerate(self._connections):
|
|
if cnx is connection:
|
|
self._connections.pop(i)
|
|
if keep_in_pool:
|
|
self._connections.append((cnx, False))
|
|
self._debug('Put connection to %r in pool', cnx.dsn)
|
|
else:
|
|
self._debug('Forgot connection to %r', cnx.dsn)
|
|
cnx.close()
|
|
break
|
|
else:
|
|
raise PoolError('This connection does not below to the pool')
|
|
|
|
@locked
|
|
def close_all(self, dsn=None):
|
|
count = 0
|
|
last = None
|
|
for i, (cnx, used) in tools.reverse_enumerate(self._connections):
|
|
if dsn is None or cnx._original_dsn == dsn:
|
|
cnx.close()
|
|
last = self._connections.pop(i)[0]
|
|
count += 1
|
|
_logger.info('%r: Closed %d connections %s', self, count,
|
|
(dsn and last and 'to %r' % last.dsn) or '')
|
|
|
|
|
|
class Connection(object):
|
|
""" A lightweight instance of a connection to postgres
|
|
"""
|
|
def __init__(self, pool, dbname, dsn):
|
|
self.dbname = dbname
|
|
self.dsn = dsn
|
|
self.__pool = pool
|
|
|
|
def cursor(self, serialized=True):
|
|
cursor_type = serialized and 'serialized ' or ''
|
|
_logger.debug('create %scursor to %r', cursor_type, self.dsn)
|
|
return Cursor(self.__pool, self.dbname, self.dsn, serialized=serialized)
|
|
|
|
def test_cursor(self, serialized=True):
|
|
cursor_type = serialized and 'serialized ' or ''
|
|
_logger.debug('create test %scursor to %r', cursor_type, self.dsn)
|
|
return TestCursor(self.__pool, self.dbname, self.dsn, serialized=serialized)
|
|
|
|
# serialized_cursor is deprecated - cursors are serialized by default
|
|
serialized_cursor = cursor
|
|
|
|
def __nonzero__(self):
|
|
"""Check if connection is possible"""
|
|
try:
|
|
_logger.warning("__nonzero__() is deprecated. (It is too expensive to test a connection.)")
|
|
cr = self.cursor()
|
|
cr.close()
|
|
return True
|
|
except Exception:
|
|
return False
|
|
|
|
def dsn(db_or_uri):
|
|
"""parse the given `db_or_uri` and return a 2-tuple (dbname, uri)"""
|
|
if db_or_uri.startswith(('postgresql://', 'postgres://')):
|
|
# extract db from uri
|
|
us = urlparse.urlsplit(db_or_uri)
|
|
if len(us.path) > 1:
|
|
db_name = us.path[1:]
|
|
elif us.username:
|
|
db_name = us.username
|
|
else:
|
|
db_name = us.hostname
|
|
return db_name, db_or_uri
|
|
|
|
_dsn = ''
|
|
for p in ('host', 'port', 'user', 'password'):
|
|
cfg = tools.config['db_' + p]
|
|
if cfg:
|
|
_dsn += '%s=%s ' % (p, cfg)
|
|
|
|
return db_or_uri, '%sdbname=%s' % (_dsn, db_or_uri)
|
|
|
|
_Pool = None
|
|
|
|
def db_connect(to, allow_uri=False):
|
|
global _Pool
|
|
if _Pool is None:
|
|
_Pool = ConnectionPool(int(tools.config['db_maxconn']))
|
|
|
|
db, uri = dsn(to)
|
|
if not allow_uri and db != to:
|
|
raise ValueError('URI connections not allowed')
|
|
return Connection(_Pool, db, uri)
|
|
|
|
def close_db(db_name):
|
|
""" You might want to call openerp.modules.registry.RegistryManager.delete(db_name) along this function."""
|
|
global _Pool
|
|
if _Pool:
|
|
_Pool.close_all(dsn(db_name)[1])
|
|
|
|
def close_all():
|
|
global _Pool
|
|
if _Pool:
|
|
_Pool.close_all()
|
|
|
|
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
|