server/session.py
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Mon, 22 Jun 2009 11:53:59 +0200
branchstable
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child 2188 3a57c8173290
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"""Repository users' and internal' sessions.
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:organization: Logilab
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:copyright: 2001-2009 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 obsolete
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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.server.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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from rql import stmts
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assert hasattr(stmts.Union, 'get_variable_variables'), "You need RQL > 0.18.3"
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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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        # 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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    # resource accessors ######################################################
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    def actual_session(self):
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        """return the original parent session if any, else self"""
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        return self
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    def etype_class(self, etype):
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        """return an entity class for the given entity type"""
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        return self.vreg.etype_class(etype)
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    def entity(self, eid):
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        """return a result set for the given eid"""
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        return self.eid_rset(eid).get_entity(0, 0)
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    def system_sql(self, sql, args=None):
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        """return a sql cursor on the system database"""
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        if not sql.split(None, 1)[0].upper() == 'SELECT':
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            self.mode = 'write'
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        cursor = self.pool['system']
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        self.pool.source('system').doexec(cursor, sql, args)
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        return cursor
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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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            self._ = self.__ = vreg.config.translations[language]
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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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                self._ = self.__ = vreg.config.translations[language]
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            except KeyError:
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                self._ = self.__ = unicode
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        self.lang = language
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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 get_mode(self):
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        return getattr(self._threaddata, 'mode', 'read')
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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), resetted to read on '
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                    '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):
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        """the session need a pool to execute some queries"""
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        if 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 = self.repo._get_pool()
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            try:
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                self._threaddata.pool.pool_set()
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            except:
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                self._threaddata.pool = None
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                self.repo._free_pool(self.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):
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        """the session has 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 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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            self._threads_in_transaction.remove(threading.currentThread())
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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 = 'read'
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    # shared data handling ###################################################
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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
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        else:
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            self.data[key] = value
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    # request interface #######################################################
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0
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    def set_entity_cache(self, entity):
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        # no entity cache in the server, too high risk of inconsistency
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        # between pre/post hooks
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        pass
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    def entity_cache(self, eid):
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        raise KeyError(eid)
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    def base_url(self):
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        return self.repo.config['base-url'] or u''
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0
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    def from_controller(self):
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        """return the id (string) of the controller issuing the request (no
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        sense here, always return 'view')
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        """
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        return 'view'
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0
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    def source_defs(self):
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        return self.repo.source_defs()
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    def describe(self, eid):
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        """return a tuple (type, sourceuri, extid) for the entity with id <eid>"""
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        return self.repo.type_and_source_from_eid(eid, self)
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0
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    # db-api like interface ###################################################
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    def source_from_eid(self, eid):
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        """return the source where the entity with id <eid> is located"""
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        return self.repo.source_from_eid(eid, self)
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    def decorate_rset(self, rset, propagate=False):
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        rset.vreg = self.vreg
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        rset.req = propagate and self or self.actual_session()
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        return rset
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    @property
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    def super_session(self):
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        try:
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            csession = self._threaddata.childsession
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        except AttributeError:
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            if self.is_super_session:
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                csession = self
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            else:
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                csession = ChildSession(self)
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            self._threaddata.childsession = csession
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        # need shared pool set
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        self.set_pool()
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        return csession
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0
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    def unsafe_execute(self, rql, kwargs=None, eid_key=None, build_descr=False,
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                       propagate=False):
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        """like .execute but with security checking disabled (this method is
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        internal to the server, it's not part of the db-api)
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        if `propagate` is true, the super_session will be attached to the result
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        set instead of the parent session, hence further query done through
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        entities fetched from this result set will bypass security as well
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        """
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        return self.super_session.execute(rql, kwargs, eid_key, build_descr,
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                                          propagate)
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    @property
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    def cursor(self):
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        """return a rql cursor"""
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parents:
diff changeset
   255
        return self
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parents: 1263
diff changeset
   256
0
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parents:
diff changeset
   257
    def execute(self, rql, kwargs=None, eid_key=None, build_descr=True,
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parents:
diff changeset
   258
                propagate=False):
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parents:
diff changeset
   259
        """db-api like method directly linked to the querier execute method
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parents:
diff changeset
   260
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parents:
diff changeset
   261
        Becare that unlike actual cursor.execute, `build_descr` default to
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   262
        false
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parents:
diff changeset
   263
        """
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parents:
diff changeset
   264
        rset = self._execute(self, rql, kwargs, eid_key, build_descr)
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parents:
diff changeset
   265
        return self.decorate_rset(rset, propagate)
1660
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parents: 1263
diff changeset
   266
0
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parents:
diff changeset
   267
    def commit(self, reset_pool=True):
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parents:
diff changeset
   268
        """commit the current session's transaction"""
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parents:
diff changeset
   269
        if self.pool is None:
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parents:
diff changeset
   270
            assert not self.pending_operations
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parents: 2063
diff changeset
   271
            self.transaction_data.clear()
0
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parents:
diff changeset
   272
            self._touch()
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parents:
diff changeset
   273
            return
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   274
        if self.commit_state:
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parents:
diff changeset
   275
            return
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parents:
diff changeset
   276
        # on rollback, an operation should have the following state
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   277
        # information:
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parents:
diff changeset
   278
        # - processed by the precommit/commit event or not
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parents:
diff changeset
   279
        # - if processed, is it the failed operation
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   280
        try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   281
            for trstate in ('precommit', 'commit'):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   282
                processed = []
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parents:
diff changeset
   283
                self.commit_state = trstate
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   284
                try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   285
                    while self.pending_operations:
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parents:
diff changeset
   286
                        operation = self.pending_operations.pop(0)
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parents:
diff changeset
   287
                        operation.processed = trstate
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parents:
diff changeset
   288
                        processed.append(operation)
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parents:
diff changeset
   289
                        operation.handle_event('%s_event' % trstate)
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parents:
diff changeset
   290
                    self.pending_operations[:] = processed
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parents:
diff changeset
   291
                    self.debug('%s session %s done', trstate, self.id)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   292
                except:
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parents:
diff changeset
   293
                    self.exception('error while %sing', trstate)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   294
                    operation.failed = True
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   295
                    for operation in processed:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   296
                        operation.handle_event('revert%s_event' % trstate)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   297
                    self.rollback(reset_pool)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   298
                    raise
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   299
            self.pool.commit()
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   300
        finally:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   301
            self._touch()
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   302
            self.commit_state = None
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parents:
diff changeset
   303
            self.pending_operations[:] = []
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parents: 2063
diff changeset
   304
            self.transaction_data.clear()
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   305
            if reset_pool:
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parents:
diff changeset
   306
                self.reset_pool()
1660
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parents: 1263
diff changeset
   307
0
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parents:
diff changeset
   308
    def rollback(self, reset_pool=True):
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parents:
diff changeset
   309
        """rollback the current session's transaction"""
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   310
        if self.pool is None:
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parents:
diff changeset
   311
            assert not self.pending_operations
2100
89b825cdec74 simplify transaction data api, reorganize code
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parents: 2063
diff changeset
   312
            self.transaction_data.clear()
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   313
            self._touch()
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   314
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   315
        try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   316
            while self.pending_operations:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   317
                try:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   318
                    operation = self.pending_operations.pop(0)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   319
                    operation.handle_event('rollback_event')
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   320
                except:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   321
                    self.critical('rollback error', exc_info=sys.exc_info())
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   322
                    continue
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   323
            self.pool.rollback()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   324
        finally:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   325
            self._touch()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   326
            self.pending_operations[:] = []
2100
89b825cdec74 simplify transaction data api, reorganize code
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parents: 2063
diff changeset
   327
            self.transaction_data.clear()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   328
            if reset_pool:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   329
                self.reset_pool()
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   330
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   331
    def close(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   332
        """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
   333
        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
   334
        # 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
   335
        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
   336
            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
   337
                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
   338
            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
   339
            # 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
   340
            # 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
   341
            # 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
   342
            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
   343
                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
   344
                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
   345
                        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
   346
                    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
   347
            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
   348
                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
   349
                           'session anyway', thread)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
        self.rollback()
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   351
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
    # transaction data/operations management ##################################
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   353
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   354
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   355
    def transaction_data(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   356
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   357
            return self._threaddata.transaction_data
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   358
        except AttributeError:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   359
            self._threaddata.transaction_data = {}
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   360
            return self._threaddata.transaction_data
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   361
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   362
    @obsolete('use direct access to session.transaction_data')
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
    def query_data(self, key, default=None, setdefault=False, pop=False):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
        if setdefault:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   365
            assert not pop
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   366
            return self.transaction_data.setdefault(key, default)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
        if pop:
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   368
            return self.transaction_data.pop(key, default)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   369
        else:
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   370
            return self.transaction_data.get(key, default)
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   371
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   372
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   373
    def pending_operations(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   374
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   375
            return self._threaddata.pending_operations
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   376
        except AttributeError:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   377
            self._threaddata.pending_operations = []
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   378
            return self._threaddata.pending_operations
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   379
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   380
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   381
    def add_operation(self, operation, index=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
        """add an observer"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
        assert self.commit_state != 'commit'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
        if index is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
            self.pending_operations.insert(index, operation)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   387
            self.pending_operations.append(operation)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   388
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   389
    # querier helpers #########################################################
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   390
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   391
    @property
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   392
    def rql_rewriter(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   393
        try:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   394
            return self._threaddata._rewriter
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   395
        except AttributeError:
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   396
            self._threaddata._rewriter = RQLRewriter(self.repo.querier, self)
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   397
            return self._threaddata._rewriter
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   398
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
    def build_description(self, rqlst, args, result):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
        """build a description for a given result"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
        if len(rqlst.children) == 1 and len(rqlst.children[0].solutions) == 1:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
            # easy, all lines are identical
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
            selected = rqlst.children[0].selection
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
            solution = rqlst.children[0].solutions[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
            description = _make_description(selected, args, solution)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
            return [tuple(description)] * len(result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
        # hard, delegate the work :o)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
        return self.manual_build_descr(rqlst, args, result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
    def manual_build_descr(self, rqlst, args, result):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
        """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
   412
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   413
        XXX could probably be done more efficiently during execution of query
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
        # not so easy, looks for variable which changes from one solution
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   416
        # to another
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
        unstables = rqlst.get_variable_variables()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
        basedescription = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
        todetermine = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        selected = rqlst.children[0].selection # sample selection
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        for i, term in enumerate(selected):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
            if isinstance(term, Function) and term.descr().rtype is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
                basedescription.append(term.get_type(term.descr().rtype, args))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
                continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
            for vref in term.get_nodes(VariableRef):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
                if vref.name in unstables:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
                    basedescription.append(None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
                    todetermine.append( (i, is_final(rqlst, vref.variable, args)) )
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
                    break
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
                # sample etype
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
                etype = rqlst.children[0].solutions[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
                basedescription.append(term.get_type(etype, args))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
        if not todetermine:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
            return [tuple(basedescription)] * len(result)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
        return self._build_descr(result, basedescription, todetermine)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   437
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
    def _build_descr(self, result, basedescription, todetermine):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   439
        description = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   440
        etype_from_eid = self.describe
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   441
        for row in result:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
            row_descr = basedescription
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
            for index, isfinal in todetermine:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
                value = row[index]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
                if value is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
                    # None value inserted by an outer join, no type
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
                    row_descr[index] = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   448
                    continue
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   449
                if isfinal:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   450
                    row_descr[index] = etype_from_pyobj(value)
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   451
                else:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   452
                    try:
1169
52058e8a3af9 somewhat handle corrupted database when manually building a database
sylvain.thenault@logilab.fr
parents: 974
diff changeset
   453
                        row_descr[index] = etype_from_eid(value)[0]
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   454
                    except UnknownEid:
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   455
                        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
   456
                        row_descr[index] = row[index] = None
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
            description.append(tuple(row_descr))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
        return description
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   460
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
class ChildSession(Session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   462
    """child (or internal) session are used to hijack the security system
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
    cnxtype = 'inmemory'
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   465
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
    def __init__(self, parent_session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
        self.id = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
        self.is_internal_session = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
        self.is_super_session = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
        # session which has created this one
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
        self.parent_session = parent_session
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   472
        self.user = InternalManager()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
        self.repo = parent_session.repo
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   474
        self.vreg = parent_session.vreg
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
        self.data = parent_session.data
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
        self.encoding = parent_session.encoding
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
        self.lang = parent_session.lang
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
        self._ = self.__ = parent_session._
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
        # short cut to querier .execute method
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
        self._execute = self.repo.querier.execute
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   481
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
    def super_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
        return self
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   485
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
    def get_mode(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
        return self.parent_session.mode
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
    def set_mode(self, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
        self.parent_session.set_mode(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
    mode = property(get_mode, set_mode)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   491
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
    def get_commit_state(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   493
        return self.parent_session.commit_state
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
    def set_commit_state(self, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   495
        self.parent_session.set_commit_state(value)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   496
    commit_state = property(get_commit_state, set_commit_state)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   497
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
    def pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
        return self.parent_session.pool
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
    def pending_operations(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
        return self.parent_session.pending_operations
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
    @property
2100
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   505
    def transaction_data(self):
89b825cdec74 simplify transaction data api, reorganize code
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2063
diff changeset
   506
        return self.parent_session.transaction_data
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   507
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   508
    def set_pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
        """the session need a pool to execute some queries"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
        self.parent_session.set_pool()
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 reset_pool(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   513
        """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
   514
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
        self.parent_session.reset_pool()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   516
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   517
    def actual_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   518
        """return the original parent session if any, else self"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   519
        return self.parent_session
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   520
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   521
    def commit(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   522
        """commit the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   523
        self.parent_session.commit(reset_pool)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   524
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   525
    def rollback(self, reset_pool=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   526
        """rollback the current session's transaction"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   527
        self.parent_session.rollback(reset_pool)
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   528
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   529
    def close(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   530
        """do not close pool on session close, since they are shared now"""
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
    def user_data(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   534
        """returns a dictionnary with this user's information"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   535
        return self.parent_session.user_data()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   536
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   537
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   538
class InternalSession(Session):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   539
    """special session created internaly by the repository"""
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   540
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   541
    def __init__(self, repo, cnxprops=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   542
        super(InternalSession, self).__init__(_IMANAGER, repo, cnxprops,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   543
                                              _id='internal')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
        self.cnxtype = 'inmemory'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   545
        self.is_internal_session = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   546
        self.is_super_session = True
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   547
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
    def super_session(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
        return self
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   551
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
class InternalManager(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
    """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
   555
    bootstrapping the repository or creating regular users according to
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
    repository content
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
    def __init__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   559
        self.eid = -1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
        self.login = u'__internal_manager__'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
        self.properties = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   562
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   563
    def matching_groups(self, groups):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   564
        return 1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   565
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
    def is_in_group(self, group):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   568
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
    def owns(self, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
        return True
1660
d1030dd9730b delete-trailing-whitespaces, missing import
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   571
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   572
    def has_permission(self, pname, contexteid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   573
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   574
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   575
    def property_value(self, key):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   576
        if key == 'ui.language':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   577
            return 'en'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   578
        return None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   579
1132
96752791c2b6 pylint cleanup
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
   580
_IMANAGER = InternalManager()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   581
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
from logging import getLogger
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   583
from cubicweb import set_log_methods
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   584
set_log_methods(Session, getLogger('cubicweb.session'))