server/session.py
author Alexandre Fayolle <alexandre.fayolle@logilab.fr>
Fri, 15 Jan 2010 09:36:49 +0100
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"""Repository users' and internal' sessions.
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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import sys
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import threading
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from time import time
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from logilab.common.deprecation import deprecated
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from rql.nodes import VariableRef, Function, ETYPE_PYOBJ_MAP, etype_from_pyobj
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from yams import BASE_TYPES
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from cubicweb import RequestSessionMixIn, Binary, UnknownEid
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from cubicweb.dbapi import ConnectionProperties
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from cubicweb.utils import make_uid
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from cubicweb.rqlrewrite import RQLRewriter
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ETYPE_PYOBJ_MAP[Binary] = 'Bytes'
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def is_final(rqlst, variable, args):
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    # try to find if this is a final var or not
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    for select in rqlst.children:
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        for sol in select.solutions:
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            etype = variable.get_type(sol, args)
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            if etype is None:
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                continue
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            if etype in BASE_TYPES:
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                return True
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            return False
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def _make_description(selected, args, solution):
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    """return a description for a result set"""
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    description = []
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    for term in selected:
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        description.append(term.get_type(solution, args))
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    return description
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class Session(RequestSessionMixIn):
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    """tie session id, user, connections pool and other session data all
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    together
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    """
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    def __init__(self, user, repo, cnxprops=None, _id=None):
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        super(Session, self).__init__(repo.vreg)
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        self.id = _id or make_uid(user.login.encode('UTF8'))
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        cnxprops = cnxprops or ConnectionProperties('inmemory')
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        self.user = user
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        self.repo = repo
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        self.cnxtype = cnxprops.cnxtype
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        self.creation = time()
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        self.timestamp = self.creation
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        self.is_internal_session = False
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        self.is_super_session = False
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        self.default_mode = 'read'
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        # short cut to querier .execute method
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        self._execute = repo.querier.execute
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        # shared data, used to communicate extra information between the client
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        # and the rql server
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        self.data = {}
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        # i18n initialization
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        self.set_language(cnxprops.lang)
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        # internals
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        self._threaddata = threading.local()
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        self._threads_in_transaction = set()
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        self._closed = False
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    def __str__(self):
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        return '<%ssession %s (%s 0x%x)>' % (self.cnxtype, self.user.login,
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                                             self.id, id(self))
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    @property
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    def schema(self):
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        return self.repo.schema
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    def hijack_user(self, user):
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        """return a fake request/session using specified user"""
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        session = Session(user, self.repo)
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        session._threaddata = self.actual_session()._threaddata
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        return session
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    def _super_call(self, __cb, *args, **kwargs):
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        if self.is_super_session:
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            __cb(self, *args, **kwargs)
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            return
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        self.is_super_session = True
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        try:
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            __cb(self, *args, **kwargs)
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        finally:
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            self.is_super_session = False
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    def add_relation(self, fromeid, rtype, toeid):
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        """provide direct access to the repository method to add a relation.
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        This is equivalent to the following rql query:
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          SET X rtype Y WHERE X eid  fromeid, T eid toeid
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        without read security check but also all the burden of rql execution.
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        You may use this in hooks when you know both eids of the relation you
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        want to add.
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        """
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        if self.vreg.schema[rtype].inlined:
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            entity = self.entity_from_eid(fromeid)
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            entity[rtype] = toeid
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            self._super_call(self.repo.glob_update_entity,
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                             entity, set((rtype,)))
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        else:
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            self._super_call(self.repo.glob_add_relation,
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                             fromeid, rtype, toeid)
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   116
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   117
    def delete_relation(self, fromeid, rtype, toeid):
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   118
        """provide direct access to the repository method to delete a relation.
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diff changeset
   119
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   120
        This is equivalent to the following rql query:
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diff changeset
   121
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   122
          DELETE X rtype Y WHERE X eid  fromeid, T eid toeid
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diff changeset
   123
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   124
        without read security check but also all the burden of rql execution.
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   125
        You may use this in hooks when you know both eids of the relation you
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diff changeset
   126
        want to delete.
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   127
        """
3197
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diff changeset
   128
        if self.vreg.schema[rtype].inlined:
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   129
            entity = self.entity_from_eid(fromeid)
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   130
            entity[rtype] = None
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   131
            self._super_call(self.repo.glob_update_entity,
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   132
                             entity, set((rtype,)))
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diff changeset
   133
        else:
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   134
            self._super_call(self.repo.glob_delete_relation,
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   135
                             fromeid, rtype, toeid)
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diff changeset
   136
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   137
    # relations cache handling #################################################
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diff changeset
   138
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   139
    def update_rel_cache_add(self, subject, rtype, object, symetric=False):
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   140
        self._update_entity_rel_cache_add(subject, rtype, 'subject', object)
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diff changeset
   141
        if symetric:
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   142
            self._update_entity_rel_cache_add(object, rtype, 'subject', subject)
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diff changeset
   143
        else:
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   144
            self._update_entity_rel_cache_add(object, rtype, 'object', subject)
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parents: 2630
diff changeset
   145
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diff changeset
   146
    def update_rel_cache_del(self, subject, rtype, object, symetric=False):
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diff changeset
   147
        self._update_entity_rel_cache_del(subject, rtype, 'subject', object)
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diff changeset
   148
        if symetric:
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diff changeset
   149
            self._update_entity_rel_cache_del(object, rtype, 'object', object)
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diff changeset
   150
        else:
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diff changeset
   151
            self._update_entity_rel_cache_del(object, rtype, 'object', subject)
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diff changeset
   152
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diff changeset
   153
    def _update_entity_rel_cache_add(self, eid, rtype, role, targeteid):
2647
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diff changeset
   154
        try:
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diff changeset
   155
            entity = self.entity_cache(eid)
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diff changeset
   156
        except KeyError:
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diff changeset
   157
            return
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diff changeset
   158
        rcache = entity.relation_cached(rtype, role)
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diff changeset
   159
        if rcache is not None:
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diff changeset
   160
            rset, entities = rcache
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diff changeset
   161
            rset = rset.copy()
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diff changeset
   162
            entities = list(entities)
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diff changeset
   163
            rset.rows.append([targeteid])
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diff changeset
   164
            if not isinstance(rset.description, list): # else description not set
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diff changeset
   165
                rset.description = list(rset.description)
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diff changeset
   166
            rset.description.append([self.describe(targeteid)[0]])
3196
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parents: 3161
diff changeset
   167
            targetentity = self.entity_from_eid(targeteid)
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diff changeset
   168
            if targetentity.rset is None:
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parents: 3161
diff changeset
   169
                targetentity.rset = rset
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diff changeset
   170
                targetentity.row = rset.rowcount
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diff changeset
   171
                targetentity.col = 0
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diff changeset
   172
            rset.rowcount += 1
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diff changeset
   173
            entities.append(targetentity)
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diff changeset
   174
            entity._related_cache['%s_%s' % (rtype, role)] = (rset, tuple(entities))
2647
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diff changeset
   175
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diff changeset
   176
    def _update_entity_rel_cache_del(self, eid, rtype, role, targeteid):
3553
76b4a177a018 [session cache] ensure we're not modifying cached rset/entities, they may be used elsewhere
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diff changeset
   177
        try:
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parents: 3275
diff changeset
   178
            entity = self.entity_cache(eid)
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diff changeset
   179
        except KeyError:
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diff changeset
   180
            return
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diff changeset
   181
        rcache = entity.relation_cached(rtype, role)
2647
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diff changeset
   182
        if rcache is not None:
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parents: 2630
diff changeset
   183
            rset, entities = rcache
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parents: 2630
diff changeset
   184
            for idx, row in enumerate(rset.rows):
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parents: 2630
diff changeset
   185
                if row[0] == targeteid:
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parents: 2630
diff changeset
   186
                    break
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parents: 2630
diff changeset
   187
            else:
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parents: 2874
diff changeset
   188
                # this may occurs if the cache has been filed by a hook
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parents: 2874
diff changeset
   189
                # after the database update
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parents: 2874
diff changeset
   190
                self.debug('cache inconsistency for %s %s %s %s', eid, rtype,
141cfaac6b97 don't fail when trying to update relation cache for relation deletion, this may occurs regularly
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parents: 2874
diff changeset
   191
                           role, targeteid)
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parents: 2874
diff changeset
   192
                return
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parents: 3275
diff changeset
   193
            rset = rset.copy()
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parents: 3275
diff changeset
   194
            entities = list(entities)
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diff changeset
   195
            del rset.rows[idx]
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diff changeset
   196
            if isinstance(rset.description, list): # else description not set
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diff changeset
   197
                del rset.description[idx]
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diff changeset
   198
            del entities[idx]
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diff changeset
   199
            rset.rowcount -= 1
3553
76b4a177a018 [session cache] ensure we're not modifying cached rset/entities, they may be used elsewhere
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diff changeset
   200
            entity._related_cache['%s_%s' % (rtype, role)] = (rset, tuple(entities))
2647
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diff changeset
   201
2100
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diff changeset
   202
    # resource accessors ######################################################
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   203
2100
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diff changeset
   204
    def actual_session(self):
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diff changeset
   205
        """return the original parent session if any, else self"""
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parents: 2063
diff changeset
   206
        return self
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parents: 1263
diff changeset
   207
2623
e1f34b77290b oops, should have been in a earlier commit (give rollback_on_failure to doexec)
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parents: 2616
diff changeset
   208
    def system_sql(self, sql, args=None, rollback_on_failure=True):
2100
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parents: 2063
diff changeset
   209
        """return a sql cursor on the system database"""
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   210
        if not sql.split(None, 1)[0].upper() == 'SELECT':
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parents: 2063
diff changeset
   211
            self.mode = 'write'
2623
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parents: 2616
diff changeset
   212
        return self.pool.source('system').doexec(self, sql, args,
e1f34b77290b oops, should have been in a earlier commit (give rollback_on_failure to doexec)
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parents: 2616
diff changeset
   213
                                                 rollback=rollback_on_failure)
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parents: 1263
diff changeset
   214
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
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    def set_language(self, language):
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        """i18n configuration for translation"""
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        vreg = self.vreg
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        language = language or self.user.property_value('ui.language')
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        try:
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            gettext, pgettext = vreg.config.translations[language]
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            self._ = self.__ = gettext
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            self.pgettext = pgettext
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        except KeyError:
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            language = vreg.property_value('ui.language')
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            try:
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                gettext, pgettext = vreg.config.translations[language]
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                self._ = self.__ = gettext
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                self.pgettext = pgettext
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            except KeyError:
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                self._ = self.__ = unicode
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                self.pgettext = lambda x,y: y
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        self.lang = language
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0
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    def change_property(self, prop, value):
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        assert prop == 'lang' # this is the only one changeable property for now
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        self.set_language(value)
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    # connection management ###################################################
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    def keep_pool_mode(self, mode):
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        """set pool_mode, e.g. how the session will keep its pool:
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        * if mode == 'write', the pool is freed after each ready query, but kept
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          until the transaction's end (eg commit or rollback) when a write query
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          is detected (eg INSERT/SET/DELETE queries)
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        * if mode == 'transaction', the pool is only freed after the
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          transaction's end
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        notice that a repository has a limited set of pools, and a session has to
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        wait for a free pool to run any rql query (unless it already has a pool
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        set).
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        """
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        assert mode in ('transaction', 'write')
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        if mode == 'transaction':
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            self.default_mode = 'transaction'
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        else: # mode == 'write'
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            self.default_mode = 'read'
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    def get_mode(self):
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        return getattr(self._threaddata, 'mode', self.default_mode)
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    def set_mode(self, value):
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        self._threaddata.mode = value
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    mode = property(get_mode, set_mode,
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                    doc='transaction mode (read/write/transaction), resetted to'
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                    ' default_mode on commit / rollback')
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    def get_commit_state(self):
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        return getattr(self._threaddata, 'commit_state', None)
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    def set_commit_state(self, value):
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        self._threaddata.commit_state = value
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    commit_state = property(get_commit_state, set_commit_state)
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    @property
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    def pool(self):
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        """connections pool, set according to transaction mode for each query"""
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        return getattr(self._threaddata, 'pool', None)
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    def set_pool(self, checkclosed=True):
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        """the session need a pool to execute some queries"""
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        if checkclosed and self._closed:
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            raise Exception('try to set pool on a closed session')
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        if self.pool is None:
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            # get pool first to avoid race-condition
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            self._threaddata.pool = pool = self.repo._get_pool()
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            try:
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                pool.pool_set()
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            except:
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                self._threaddata.pool = None
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                self.repo._free_pool(pool)
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                raise
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            self._threads_in_transaction.add(threading.currentThread())
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        return self._threaddata.pool
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    def reset_pool(self, ignoremode=False):
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        """the session is no longer using its pool, at least for some time"""
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        # pool may be none if no operation has been done since last commit
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        # or rollback
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        if self.pool is not None and (ignoremode or self.mode == 'read'):
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            # even in read mode, we must release the current transaction
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            pool = self.pool
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            try:
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                self._threads_in_transaction.remove(threading.currentThread())
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            except KeyError:
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                pass
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            pool.pool_reset()
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            self._threaddata.pool = None
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            # free pool once everything is done to avoid race-condition
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            self.repo._free_pool(pool)
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    def _touch(self):
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        """update latest session usage timestamp and reset mode to read"""
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        self.timestamp = time()
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        self.local_perm_cache.clear()
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        self._threaddata.mode = self.default_mode
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    # shared data handling ###################################################
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0
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    def get_shared_data(self, key, default=None, pop=False):
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        """return value associated to `key` in session data"""
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        if pop:
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            return self.data.pop(key, default)
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        else:
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            return self.data.get(key, default)
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    def set_shared_data(self, key, value, querydata=False):
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        """set value associated to `key` in session data"""
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        if querydata:
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            self.transaction_data[key] = value
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   330
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   331
            self.data[key] = value
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   332
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   333
    # request interface #######################################################
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   334
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   335
    def set_entity_cache(self, entity):
2647
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   336
        # XXX session level caching may be a pb with multiple repository
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   337
        #     instances, but 1. this is probably not the only one :$ and 2. it
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   338
        #     may be an acceptable risk. Anyway we could activate it or not
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   339
        #     according to a configuration option
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   340
        try:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   341
            self.transaction_data['ecache'].setdefault(entity.eid, entity)
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   342
        except KeyError:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   343
            self.transaction_data['ecache'] = ecache = {}
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   344
            ecache[entity.eid] = entity
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   345
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
    def entity_cache(self, eid):
2647
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   347
        try:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   348
            return self.transaction_data['ecache'][eid]
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   349
        except:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   350
            raise
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   351
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   352
    def cached_entities(self):
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   353
        return self.transaction_data.get('ecache', {}).values()
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   354
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   355
    def drop_entity_cache(self, eid=None):
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   356
        if eid is None:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   357
            self.transaction_data.pop('ecache', None)
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   358
        else:
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   359
            del self.transaction_data['ecache'][eid]
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   360
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   361
    def base_url(self):
2466
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   362
        url = self.repo.config['base-url']
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   363
        if not url:
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   364
            try:
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   365
                url = self.repo.config.default_base_url()
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   366
            except AttributeError: # default_base_url() might not be available
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   367
                self.warning('missing base-url definition in server config')
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   368
                url = u''
c4ccfd38a542 [server] take a chance to grab base-url from all-in-one config if not specified explicitly
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2319
diff changeset
   369
        return url
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   370
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   371
    def from_controller(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   372
        """return the id (string) of the controller issuing the request (no
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   373
        sense here, always return 'view')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   375
        return 'view'
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   376
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   377
    def source_defs(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   378
        return self.repo.source_defs()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   379
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   380
    def describe(self, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   381
        """return a tuple (type, sourceuri, extid) for the entity with id <eid>"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
        return self.repo.type_and_source_from_eid(eid, self)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   383
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
    # db-api like interface ###################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
    def source_from_eid(self, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
        """return the source where the entity with id <eid> is located"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   388
        return self.repo.source_from_eid(eid, self)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
    def decorate_rset(self, rset, propagate=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
        rset.vreg = self.vreg
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
        rset.req = propagate and self or self.actual_session()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   393
        return rset
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   396
    def super_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
            csession = self._threaddata.childsession
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
        except AttributeError:
2874
acdd8d8c2cff [session] use isinstance instead of testing value of is_super_session since we hack it in the add_relation method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2781
diff changeset
   400
            if isinstance(self, (ChildSession, InternalSession)):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
                csession = self
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
                csession = ChildSession(self)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
            self._threaddata.childsession = csession
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
        # need shared pool set
2764
55579275a091 [session pool] dont check closed session when calling set_pool from super_session
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2680
diff changeset
   406
        self.set_pool(checkclosed=False)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        return csession
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   408
2647
b0a2e779845c enable server side entity caching, 25% speedup on codenaf insertion. ALL CW TESTS OK
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2630
diff changeset
   409
    def unsafe_execute(self, rql, kwargs=None, eid_key=None, build_descr=True,
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
                       propagate=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
        """like .execute but with security checking disabled (this method is
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   412
        internal to the server, it's not part of the db-api)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
        if `propagate` is true, the super_session will be attached to the result
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
        set instead of the parent session, hence further query done through
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
        entities fetched from this result set will bypass security as well
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        return self.super_session.execute(rql, kwargs, eid_key, build_descr,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
                                          propagate)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
    def cursor(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
        """return a rql cursor"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
        return self
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   425
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
    def execute(self, rql, kwargs=None, eid_key=None, build_descr=True,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
                propagate=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
        """db-api like method directly linked to the querier execute method
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
        Becare that unlike actual cursor.execute, `build_descr` default to
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
        false
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
        rset = self._execute(self, rql, kwargs, eid_key, build_descr)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
        return self.decorate_rset(rset, propagate)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   435
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
    def commit(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
        """commit the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
        if self.pool is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
            assert not self.pending_operations
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   440
            self.transaction_data.clear()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
            self._touch()
2200
25bb65dc4559 test fixes, all server tests ok, except unittest_migractions (due to inter-tests-side-effects...)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2190
diff changeset
   442
            self.debug('commit session %s done (no db activity)', self.id)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
        if self.commit_state:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
        # on rollback, an operation should have the following state
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
        # information:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
        # - processed by the precommit/commit event or not
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   449
        # - if processed, is it the failed operation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   450
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   451
            for trstate in ('precommit', 'commit'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   452
                processed = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   453
                self.commit_state = trstate
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   454
                try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
                    while self.pending_operations:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
                        operation = self.pending_operations.pop(0)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
                        operation.processed = trstate
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
                        processed.append(operation)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
                        operation.handle_event('%s_event' % trstate)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   460
                    self.pending_operations[:] = processed
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
                    self.debug('%s session %s done', trstate, self.id)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
                except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
                    self.exception('error while %sing', trstate)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
                    operation.failed = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
                    for operation in processed:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
                        operation.handle_event('revert%s_event' % trstate)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
                    self.rollback(reset_pool)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
                    raise
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
            self.pool.commit()
3986
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   470
            self.commit_state = trstate = 'postcommit'
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   471
            while self.pending_operations:
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   472
                operation = self.pending_operations.pop(0)
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   473
                operation.processed = trstate
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   474
                try:
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   475
                    operation.handle_event('%s_event' % trstate)
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   476
                except:
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   477
                    self.exception('error while %sing', trstate)
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3553
diff changeset
   478
            self.debug('%s session %s done', trstate, self.id)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
        finally:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
            self._touch()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
            self.commit_state = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
            self.pending_operations[:] = []
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   483
            self.transaction_data.clear()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
            if reset_pool:
2570
80a996bb536d [repo session] ability to ask session to keep it's pool set even when only read queries are done, necessary at least during migration
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2319
diff changeset
   485
                self.reset_pool(ignoremode=True)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   486
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
    def rollback(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
        """rollback the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
        if self.pool is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
            assert not self.pending_operations
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   491
            self.transaction_data.clear()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
            self._touch()
2200
25bb65dc4559 test fixes, all server tests ok, except unittest_migractions (due to inter-tests-side-effects...)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2190
diff changeset
   493
            self.debug('rollback session %s done (no db activity)', self.id)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   495
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   496
            while self.pending_operations:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
                try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
                    operation = self.pending_operations.pop(0)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
                    operation.handle_event('rollback_event')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
                except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
                    self.critical('rollback error', exc_info=sys.exc_info())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
                    continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
            self.pool.rollback()
2188
3a57c8173290 * deprecate session.entity method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   504
            self.debug('rollback for session %s done', self.id)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
        finally:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
            self._touch()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
            self.pending_operations[:] = []
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   508
            self.transaction_data.clear()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
            if reset_pool:
2570
80a996bb536d [repo session] ability to ask session to keep it's pool set even when only read queries are done, necessary at least during migration
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2319
diff changeset
   510
                self.reset_pool(ignoremode=True)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   511
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
    def close(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   513
        """do not close pool on session close, since they are shared now"""
1880
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   514
        self._closed = True
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   515
        # copy since _threads_in_transaction maybe modified while waiting
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   516
        for thread in self._threads_in_transaction.copy():
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   517
            if thread is threading.currentThread():
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   518
                continue
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   519
            self.info('waiting for thread %s', thread)
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   520
            # do this loop/break instead of a simple join(10) in case thread is
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   521
            # the main thread (in which case it will be removed from
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   522
            # self._threads_in_transaction but still be alive...)
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   523
            for i in xrange(10):
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   524
                thread.join(1)
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   525
                if not (thread.isAlive() and
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   526
                        thread in self._threads_in_transaction):
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   527
                    break
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   528
            else:
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   529
                self.error('thread %s still alive after 10 seconds, will close '
293fe4b49e28 two in one: #343320: Logging out while deleting a CWUser blocks the cw server / #342692: ensure transaction state when Ctrl-C or other stop signal is received
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1660
diff changeset
   530
                           'session anyway', thread)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   531
        self.rollback()
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   532
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   533
    # transaction data/operations management ##################################
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   534
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   535
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   536
    def transaction_data(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   537
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   538
            return self._threaddata.transaction_data
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   539
        except AttributeError:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   540
            self._threaddata.transaction_data = {}
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   541
            return self._threaddata.transaction_data
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   542
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   543
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   544
    def pending_operations(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   545
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   546
            return self._threaddata.pending_operations
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   547
        except AttributeError:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   548
            self._threaddata.pending_operations = []
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   549
            return self._threaddata.pending_operations
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   550
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   551
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
    def add_operation(self, operation, index=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
        """add an observer"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
        assert self.commit_state != 'commit'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
        if index is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
            self.pending_operations.insert(index, operation)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
            self.pending_operations.append(operation)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   559
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
    # querier helpers #########################################################
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   561
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   562
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   563
    def rql_rewriter(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   564
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   565
            return self._threaddata._rewriter
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   566
        except AttributeError:
3240
8604a15995d1 refactor so that rql rewriter may be used outside the server. Enhance it to be usable for RRQLExpression as well
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3198
diff changeset
   567
            self._threaddata._rewriter = RQLRewriter(self)
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   568
            return self._threaddata._rewriter
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   569
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
    def build_description(self, rqlst, args, result):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   571
        """build a description for a given result"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   572
        if len(rqlst.children) == 1 and len(rqlst.children[0].solutions) == 1:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   573
            # easy, all lines are identical
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   574
            selected = rqlst.children[0].selection
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   575
            solution = rqlst.children[0].solutions[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   576
            description = _make_description(selected, args, solution)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   577
            return [tuple(description)] * len(result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   578
        # hard, delegate the work :o)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   579
        return self.manual_build_descr(rqlst, args, result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   580
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   581
    def manual_build_descr(self, rqlst, args, result):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
        """build a description for a given result by analysing each row
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   583
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   584
        XXX could probably be done more efficiently during execution of query
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   585
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   586
        # not so easy, looks for variable which changes from one solution
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   587
        # to another
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   588
        unstables = rqlst.get_variable_variables()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   589
        basedescription = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   590
        todetermine = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   591
        selected = rqlst.children[0].selection # sample selection
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   592
        for i, term in enumerate(selected):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   593
            if isinstance(term, Function) and term.descr().rtype is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   594
                basedescription.append(term.get_type(term.descr().rtype, args))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   595
                continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   596
            for vref in term.get_nodes(VariableRef):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   597
                if vref.name in unstables:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   598
                    basedescription.append(None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   599
                    todetermine.append( (i, is_final(rqlst, vref.variable, args)) )
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   600
                    break
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   601
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   602
                # sample etype
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   603
                etype = rqlst.children[0].solutions[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   604
                basedescription.append(term.get_type(etype, args))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   605
        if not todetermine:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   606
            return [tuple(basedescription)] * len(result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   607
        return self._build_descr(result, basedescription, todetermine)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   608
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   609
    def _build_descr(self, result, basedescription, todetermine):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   610
        description = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   611
        etype_from_eid = self.describe
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   612
        for row in result:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   613
            row_descr = basedescription
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   614
            for index, isfinal in todetermine:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   615
                value = row[index]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   616
                if value is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   617
                    # None value inserted by an outer join, no type
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   618
                    row_descr[index] = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   619
                    continue
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   620
                if isfinal:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   621
                    row_descr[index] = etype_from_pyobj(value)
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   622
                else:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   623
                    try:
1169
52058e8a3af9 somewhat handle corrupted database when manually building a database
sylvain.thenault@logilab.fr
parents: 974
diff changeset
   624
                        row_descr[index] = etype_from_eid(value)[0]
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   625
                    except UnknownEid:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   626
                        self.critical('wrong eid %s in repository, should check database' % value)
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   627
                        row_descr[index] = row[index] = None
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   628
            description.append(tuple(row_descr))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   629
        return description
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   630
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2647
diff changeset
   631
    @deprecated("use vreg['etypes'].etype_class(etype)")
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2647
diff changeset
   632
    def etype_class(self, etype):
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2647
diff changeset
   633
        """return an entity class for the given entity type"""
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2647
diff changeset
   634
        return self.vreg['etypes'].etype_class(etype)
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2647
diff changeset
   635
2613
5e19c2bb370e R [all] logilab.common 0.44 provides only deprecated
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2466
diff changeset
   636
    @deprecated('use direct access to session.transaction_data')
2182
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   637
    def query_data(self, key, default=None, setdefault=False, pop=False):
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   638
        if setdefault:
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   639
            assert not pop
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   640
            return self.transaction_data.setdefault(key, default)
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   641
        if pop:
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   642
            return self.transaction_data.pop(key, default)
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   643
        else:
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   644
            return self.transaction_data.get(key, default)
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   645
2613
5e19c2bb370e R [all] logilab.common 0.44 provides only deprecated
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2466
diff changeset
   646
    @deprecated('use entity_from_eid(eid, etype=None)')
2182
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   647
    def entity(self, eid):
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   648
        """return a result set for the given eid"""
2680
66472d85d548 [R] use req.entity_from_eid
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2650
diff changeset
   649
        return self.entity_from_eid(eid)
2182
488099333160 mark session.entity method as obsolete
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2100
diff changeset
   650
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   651
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   652
class ChildSession(Session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   653
    """child (or internal) session are used to hijack the security system
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   654
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   655
    cnxtype = 'inmemory'
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   656
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   657
    def __init__(self, parent_session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   658
        self.id = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   659
        self.is_internal_session = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   660
        self.is_super_session = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   661
        # session which has created this one
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   662
        self.parent_session = parent_session
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   663
        self.user = InternalManager()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   664
        self.repo = parent_session.repo
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   665
        self.vreg = parent_session.vreg
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   666
        self.data = parent_session.data
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   667
        self.encoding = parent_session.encoding
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   668
        self.lang = parent_session.lang
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   669
        self._ = self.__ = parent_session._
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   670
        # short cut to querier .execute method
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   671
        self._execute = self.repo.querier.execute
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   672
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   673
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   674
    def super_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   675
        return self
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   676
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   677
    def get_mode(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   678
        return self.parent_session.mode
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   679
    def set_mode(self, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   680
        self.parent_session.set_mode(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   681
    mode = property(get_mode, set_mode)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   682
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   683
    def get_commit_state(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   684
        return self.parent_session.commit_state
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   685
    def set_commit_state(self, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   686
        self.parent_session.set_commit_state(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   687
    commit_state = property(get_commit_state, set_commit_state)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   688
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   689
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   690
    def pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   691
        return self.parent_session.pool
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   692
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   693
    def pending_operations(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   694
        return self.parent_session.pending_operations
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   695
    @property
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   696
    def transaction_data(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   697
        return self.parent_session.transaction_data
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   698
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   699
    def set_pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   700
        """the session need a pool to execute some queries"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   701
        self.parent_session.set_pool()
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   702
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   703
    def reset_pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   704
        """the session has no longer using its pool, at least for some time
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   705
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   706
        self.parent_session.reset_pool()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   707
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   708
    def actual_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   709
        """return the original parent session if any, else self"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   710
        return self.parent_session
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   711
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   712
    def commit(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   713
        """commit the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   714
        self.parent_session.commit(reset_pool)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   715
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   716
    def rollback(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   717
        """rollback the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   718
        self.parent_session.rollback(reset_pool)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   719
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   720
    def close(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   721
        """do not close pool on session close, since they are shared now"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   722
        self.rollback()
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   723
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   724
    def user_data(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   725
        """returns a dictionnary with this user's information"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   726
        return self.parent_session.user_data()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   727
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   728
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   729
class InternalSession(Session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   730
    """special session created internaly by the repository"""
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   731
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   732
    def __init__(self, repo, cnxprops=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   733
        super(InternalSession, self).__init__(_IMANAGER, repo, cnxprops,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   734
                                              _id='internal')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   735
        self.cnxtype = 'inmemory'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   736
        self.is_internal_session = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   737
        self.is_super_session = True
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   738
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   739
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   740
    def super_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   741
        return self
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   742
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   743
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   744
class InternalManager(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   745
    """a manager user with all access rights used internally for task such as
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   746
    bootstrapping the repository or creating regular users according to
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   747
    repository content
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   748
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   749
    def __init__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   750
        self.eid = -1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   751
        self.login = u'__internal_manager__'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   752
        self.properties = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   753
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   754
    def matching_groups(self, groups):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   755
        return 1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   756
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   757
    def is_in_group(self, group):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   758
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   759
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   760
    def owns(self, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   761
        return True
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   762
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   763
    def has_permission(self, pname, contexteid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   764
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   765
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   766
    def property_value(self, key):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   767
        if key == 'ui.language':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   768
            return 'en'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   769
        return None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   770
1132
96752791c2b6 pylint cleanup
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
   771
_IMANAGER = InternalManager()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   772
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   773
from logging import getLogger
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   774
from cubicweb import set_log_methods
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   775
set_log_methods(Session, getLogger('cubicweb.session'))