+
−# copyright 2010-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+
−# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+
−#
+
−# This file is part of CubicWeb.
+
−#
+
−# CubicWeb is free software: you can redistribute it and/or modify it under the
+
−# terms of the GNU Lesser General Public License as published by the Free
+
−# Software Foundation, either version 2.1 of the License, or (at your option)
+
−# any later version.
+
−#
+
−# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+
−# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+
−# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
+
−# details.
+
−#
+
−# You should have received a copy of the GNU Lesser General Public License along
+
−# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
−"""hooks for repository sources synchronization"""
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−
+
−from socket import gethostname
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−
+
−from yams.schema import role_name
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−
+
−from cubicweb import ValidationError
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−from cubicweb.selectors import is_instance
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−from cubicweb.server import SOURCE_TYPES, hook
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−
+
−class SourceHook(hook.Hook):
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−    __abstract__ = True
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−    category = 'cw.sources'
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−
+
−
+
−class SourceAddedOp(hook.Operation):
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−    def postcommit_event(self):
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−        self.session.repo.add_source(self.entity)
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−
+
−class SourceAddedHook(SourceHook):
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−    __regid__ = 'cw.sources.added'
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−    __select__ = SourceHook.__select__ & is_instance('CWSource')
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−    events = ('after_add_entity',)
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−    def __call__(self):
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−        try:
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−            sourcecls = SOURCE_TYPES[self.entity.type]
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−        except KeyError:
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−            msg = self._cw._('unknown source type')
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−            raise ValidationError(self.entity.eid,
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−                                  {role_name('type', 'subject'): msg})
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−        sourcecls.check_conf_dict(self.entity.eid, self.entity.host_config,
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−                                  fail_if_unknown=not self._cw.vreg.config.repairing)
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−        SourceAddedOp(self._cw, entity=self.entity)
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−
+
−
+
−class SourceRemovedOp(hook.Operation):
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−    def precommit_event(self):
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−        self.session.repo.remove_source(self.uri)
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−
+
−class SourceRemovedHook(SourceHook):
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−    __regid__ = 'cw.sources.removed'
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−    __select__ = SourceHook.__select__ & is_instance('CWSource')
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−    events = ('before_delete_entity',)
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−    def __call__(self):
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−        if self.entity.name == 'system':
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−            raise ValidationError(self.entity.eid, {None: 'cant remove system source'})
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−        SourceRemovedOp(self._cw, uri=self.entity.name)
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−
+
−
+
−class SourceUpdatedOp(hook.DataOperationMixIn, hook.Operation):
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−
+
−    def precommit_event(self):
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−        self.__processed = []
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−        for source in self.get_data():
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−            conf = source.repo_source.check_config(source)
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−            self.__processed.append( (source, conf) )
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−
+
−    def postcommit_event(self):
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−        for source, conf in self.__processed:
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−            source.repo_source.update_config(source, conf)
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−
+
−class SourceUpdatedHook(SourceHook):
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−    __regid__ = 'cw.sources.configupdate'
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−    __select__ = SourceHook.__select__ & is_instance('CWSource')
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−    events = ('after_update_entity',)
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−    def __call__(self):
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−        if 'config' in self.entity.cw_edited:
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−            SourceUpdatedOp.get_instance(self._cw).add_data(self.entity)
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−
+
−class SourceHostConfigUpdatedHook(SourceHook):
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−    __regid__ = 'cw.sources.hostconfigupdate'
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−    __select__ = SourceHook.__select__ & is_instance('CWSourceHostConfig')
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−    events = ('after_add_entity', 'after_update_entity', 'before_delete_entity',)
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−    def __call__(self):
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−        if self.entity.match(gethostname()):
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−            if self.event == 'after_update_entity' and \
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−                   not 'config' in self.entity.cw_edited:
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−                return
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−            try:
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−                SourceUpdatedOp.get_instance(self._cw).add_data(self.entity.cwsource)
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−            except IndexError:
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−                # XXX no source linked to the host config yet
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−                pass
+
−
+
−
+
−# source mapping synchronization. Expect cw_for_source/cw_schema are immutable
+
−# relations (i.e. can't change from a source or schema to another).
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−
+
−class SourceMappingDeleteHook(SourceHook):
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−    """check cw_for_source and cw_schema are immutable relations
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−
+
−    XXX empty delete perms would be enough?
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−    """
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−    __regid__ = 'cw.sources.delschemaconfig'
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−    __select__ = SourceHook.__select__ & hook.match_rtype('cw_for_source', 'cw_schema')
+
−    events = ('before_add_relation',)
+
−    def __call__(self):
+
−        if not self._cw.added_in_transaction(self.eidfrom):
+
−            msg = self._cw._("can't change this relation")
+
−            raise ValidationError(self.eidfrom, {self.rtype: msg})
+
−
+
−
+
−class SourceMappingChangedOp(hook.DataOperationMixIn, hook.Operation):
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−    def check_or_update(self, checkonly):
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−        session = self.session
+
−        # take care, can't call get_data() twice
+
−        try:
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−            data = self.__data
+
−        except AttributeError:
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−            data = self.__data = self.get_data()
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−        for schemacfg, source in data:
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−            if source is None:
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−                source = schemacfg.cwsource.repo_source
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−            if session.added_in_transaction(schemacfg.eid):
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−                if not session.deleted_in_transaction(schemacfg.eid):
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−                    source.add_schema_config(schemacfg, checkonly=checkonly)
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−            elif session.deleted_in_transaction(schemacfg.eid):
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−                source.delete_schema_config(schemacfg, checkonly=checkonly)
+
−            else:
+
−                source.update_schema_config(schemacfg, checkonly=checkonly)
+
−
+
−    def precommit_event(self):
+
−        self.check_or_update(True)
+
−
+
−    def postcommit_event(self):
+
−        self.check_or_update(False)
+
−
+
−
+
−class SourceMappingChangedHook(SourceHook):
+
−    __regid__ = 'cw.sources.schemaconfig'
+
−    __select__ = SourceHook.__select__ & is_instance('CWSourceSchemaConfig')
+
−    events = ('after_add_entity', 'after_update_entity')
+
−    def __call__(self):
+
−        if self.event == 'after_add_entity' or (
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−            self.event == 'after_update_entity' and 'options' in self.entity.cw_edited):
+
−            SourceMappingChangedOp.get_instance(self._cw).add_data(
+
−                (self.entity, None) )
+
−
+
−class SourceMappingDeleteHook(SourceHook):
+
−    __regid__ = 'cw.sources.delschemaconfig'
+
−    __select__ = SourceHook.__select__ & hook.match_rtype('cw_for_source')
+
−    events = ('before_delete_relation',)
+
−    def __call__(self):
+
−        SourceMappingChangedOp.get_instance(self._cw).add_data(
+
−            (self._cw.entity_from_eid(self.eidfrom),
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−             self._cw.entity_from_eid(self.eidto)) )