server/pool.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 17 Jun 2010 15:15:52 +0200
changeset 5774 0d792bceb25d
parent 5424 8ecbcbff9777
child 5824 de9b7e88660e
permissions -rw-r--r--
backport stable
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
5421
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     1
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     2
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     3
#
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     4
# This file is part of CubicWeb.
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     5
#
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     6
# CubicWeb is free software: you can redistribute it and/or modify it under the
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     7
# terms of the GNU Lesser General Public License as published by the Free
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     8
# Software Foundation, either version 2.1 of the License, or (at your option)
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
     9
# any later version.
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    10
#
5424
8ecbcbff9777 replace logilab-common by CubicWeb in disclaimer
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5421
diff changeset
    11
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
5421
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    12
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    13
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    14
# details.
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    15
#
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    16
# You should have received a copy of the GNU Lesser General Public License along
8167de96c523 proper licensing information (LGPL-2.1). Hope I get it right this time.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
    17
# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
2835
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
    18
"""CubicWeb server connections pool : the repository has a limited number of
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
    19
connections pools, each of them dealing with a set of connections on each source
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
    20
used by the repository. A connections pools (`ConnectionsPool`) is an
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
    21
abstraction for a group of connection to each source.
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    22
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    23
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    24
"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    25
__docformat__ = "restructuredtext en"
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    26
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    27
import sys
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
    28
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    29
class ConnectionsPool(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    30
    """handle connections on a set of sources, at some point associated to a
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    31
    user session
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    32
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    33
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    34
    def __init__(self, sources):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    35
        # dictionnary of (source, connection), indexed by sources'uri
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    36
        self.source_cnxs = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    37
        for source in sources:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    38
            self.source_cnxs[source.uri] = (source, source.get_connection())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    39
        if not 'system' in self.source_cnxs:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    40
            self.source_cnxs['system'] = self.source_cnxs[sources[0].uri]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    41
        self._cursors = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    42
2765
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    43
    def __getitem__(self, uri):
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    44
        """subscription notation provide access to sources'cursors"""
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    45
        try:
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    46
            cursor = self._cursors[uri]
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    47
        except KeyError:
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    48
            cursor = self.source_cnxs[uri][1].cursor()
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    49
            if cursor is not None:
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    50
                # None possible on sources without cursor support such as ldap
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    51
                self._cursors[uri] = cursor
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    52
        return cursor
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
    53
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    54
    def commit(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    55
        """commit the current transaction for this user"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    56
        # FIXME: what happends if a commit fail
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    57
        # would need a two phases commit or like, but I don't know how to do
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    58
        # this using the db-api...
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    59
        for source, cnx in self.source_cnxs.values():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    60
            # let exception propagates
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    61
            cnx.commit()
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
    62
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    63
    def rollback(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    64
        """rollback the current transaction for this user"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    65
        for source, cnx in self.source_cnxs.values():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    66
            # catch exceptions, rollback other sources anyway
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    67
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    68
                cnx.rollback()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    69
            except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    70
                source.critical('rollback error', exc_info=sys.exc_info())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    71
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    72
    def close(self, i_know_what_i_do=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    73
        """close all connections in the pool"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    74
        if i_know_what_i_do is not True: # unexpected closing safety belt
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    75
            raise RuntimeError('pool shouldn\'t be closed')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    76
        for cu in self._cursors.values():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    77
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    78
                cu.close()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    79
            except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    80
                continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    81
        for _, cnx in self.source_cnxs.values():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    82
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    83
                cnx.close()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    84
            except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    85
                continue
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
    86
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    87
    # internals ###############################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    88
2063
fe4278b50388 fix [re]set_pool prototype
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
    89
    def pool_set(self):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    90
        """pool is being set"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    91
        self.check_connections()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    92
2063
fe4278b50388 fix [re]set_pool prototype
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
    93
    def pool_reset(self):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    94
        """pool is being reseted"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    95
        for source, cnx in self.source_cnxs.values():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    96
            source.pool_reset(cnx)
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
    97
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    98
    def sources(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
    99
        """return the source objects handled by this pool"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   100
        # implementation details of flying insert requires the system source
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   101
        # first
2765
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   102
        yield self.source_cnxs['system'][0]
4721
8f63691ccb7f pylint style fixes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4710
diff changeset
   103
        for uri, (source, cnx) in self.source_cnxs.items():
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   104
            if uri == 'system':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   105
                continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   106
            yield source
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   107
        #return [source_cnx[0] for source_cnx in self.source_cnxs.values()]
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
   108
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   109
    def source(self, uid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   110
        """return the source object with the given uri"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   111
        return self.source_cnxs[uid][0]
1802
d628defebc17 delete-trailing-whitespace + some copyright update
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 1132
diff changeset
   112
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   113
    def connection(self, uid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   114
        """return the connection on the source object with the given uri"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   115
        return self.source_cnxs[uid][1]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   116
2765
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   117
    def reconnect(self, source=None):
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   118
        """reopen a connection for this source or all sources if none specified
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   119
        """
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   120
        if source is None:
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   121
            sources = self.sources()
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   122
        else:
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   123
            sources = (source,)
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   124
        for source in sources:
4710
4d9ad6a4f261 [pool] properly close existing connection before reconnection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   125
            try:
4d9ad6a4f261 [pool] properly close existing connection before reconnection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   126
                # properly close existing connection if any
4d9ad6a4f261 [pool] properly close existing connection before reconnection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   127
                self.source_cnxs[source.uri][1].close()
4d9ad6a4f261 [pool] properly close existing connection before reconnection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   128
            except:
4d9ad6a4f261 [pool] properly close existing connection before reconnection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4252
diff changeset
   129
                pass
2765
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   130
            source.info('trying to reconnect')
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   131
            self.source_cnxs[source.uri] = (source, source.get_connection())
5e2525d7b1b1 reconnect without argument reconnect all sources
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   132
            self._cursors.pop(source.uri, None)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   133
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   134
    def check_connections(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   135
        for source, cnx in self.source_cnxs.itervalues():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   136
            newcnx = source.check_connection(cnx)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   137
            if newcnx is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   138
                self.reset_connection(source, newcnx)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   139
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   140
    def reset_connection(self, source, cnx):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   141
        self.source_cnxs[source.uri] = (source, cnx)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   142
        self._cursors.pop(source.uri, None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   143
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   144
2835
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   145
from cubicweb.server.hook import (Operation, LateOperation, SingleOperation,
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   146
                                  SingleLastOperation)
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   147
from logilab.common.deprecation import class_moved, class_renamed
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   148
Operation = class_moved(Operation)
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   149
PreCommitOperation = class_renamed('PreCommitOperation', Operation)
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   150
LateOperation = class_moved(LateOperation)
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   151
SingleOperation = class_moved(SingleOperation)
04034421b072 [hooks] major refactoring:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2765
diff changeset
   152
SingleLastOperation = class_moved(SingleLastOperation)