[db-api/configuration] simplify db-api and configuration so that all the connection information is in the repository url, closes #2521848
eg no more specific option of pyro ns host, group, etc. This also fixes broken ZMQ
sources.
Changes:
* dropped pyro-ns-host, pyro-instance-id, pyro-ns-group from client side config, in
favor of repository-uri. No migration done, supposing there is **no web-only config**
in the wild. Also stop discovering the connection method through the repo_method class
attribute of the configuration, varying according to the configuration class. This is
a first step on the way to a simpler configuration handling. Notice those pyro options
are still available for repository only / all-in-one configurations as they are needed
to configure the pyro server.
* stop telling connection method using ConnectionProperties, this is so boring. Also,
drop _cnxtype from Connection and cnxtype from Session. The former is replaced by a
is_repo_in_memory property and the later is totaly useless.
* deprecate in_memory_cnx which becomes useless, use _repo_connect instead
# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""undoable transaction objects.
This module is in the cubicweb package and not in cubicweb.server because those
objects should be accessible to client through pyro, where the cubicweb.server
package may not be installed.
"""
__docformat__ = "restructuredtext en"
_ = unicode
from cubicweb import RepositoryError
ACTION_LABELS = {
'C': _('entity creation'),
'U': _('entity update'),
'D': _('entity deletion'),
'A': _('relation add'),
'R': _('relation removal'),
}
class NoSuchTransaction(RepositoryError):
# Used by CubicWebException
msg = _("there is no transaction #%s")
def __init__(self, txuuid):
super(RepositoryError, self).__init__(txuuid)
self.txuuid = txuuid
class Transaction(object):
"""an undoable transaction"""
def __init__(self, uuid, time, ueid):
self.uuid = uuid
self.datetime = time
self.user_eid = ueid
# should be set by the dbapi connection
self.req = None
def __repr__(self):
return '<Transaction %s by %s on %s>' % (
self.uuid, self.user_eid, self.datetime)
def user(self):
"""return the user entity which has done the transaction,
none if not found.
"""
return self.req.execute('Any X WHERE X eid %(x)s',
{'x': self.user_eid}).get_entity(0, 0)
def actions_list(self, public=True):
"""return an ordered list of action effectued during that transaction
if public is true, return only 'public' action, eg not ones triggered
under the cover by hooks.
"""
return self.req.cnx.transaction_actions(self.uuid, public)
class AbstractAction(object):
def __init__(self, action, public, order):
self.action = action
self.public = public
self.order = order
@property
def label(self):
return ACTION_LABELS[self.action]
@property
def ertype(self):
""" Return the entity or relation type this action is related to"""
raise NotImplementedError(self)
class EntityAction(AbstractAction):
def __init__(self, action, public, order, etype, eid, changes):
AbstractAction.__init__(self, action, public, order)
self.etype = etype
self.eid = eid
self.changes = changes
def __repr__(self):
return '<%s: %s %s (%s)>' % (
self.label, self.eid, self.changes,
self.public and 'dbapi' or 'hook')
@property
def ertype(self):
""" Return the entity or relation type this action is related to"""
return self.etype
class RelationAction(AbstractAction):
def __init__(self, action, public, order, rtype, eidfrom, eidto):
AbstractAction.__init__(self, action, public, order)
self.rtype = rtype
self.eid_from = eidfrom
self.eid_to = eidto
def __repr__(self):
return '<%s: %s %s %s (%s)>' % (
self.label, self.eid_from, self.rtype, self.eid_to,
self.public and 'dbapi' or 'hook')
@property
def ertype(self):
""" Return the entity or relation type this action is related to"""
return self.rtype