author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Tue, 26 Jan 2010 20:28:56 +0100 | |
changeset 4380 | 5613d7c06339 |
parent 4307 | 7fba9c34c88f |
child 4569 | 1acd90d0cb59 |
permissions | -rw-r--r-- |
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"""Core hooks: synchronize living session on persistent data changes |
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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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from cubicweb import UnknownProperty, ValidationError, BadConnectionId |
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from cubicweb.selectors import implements |
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from cubicweb.server import hook |
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def get_user_sessions(repo, ueid): |
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for session in repo._sessions.values(): |
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if ueid == session.user.eid: |
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yield session |
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class SyncSessionHook(hook.Hook): |
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__abstract__ = True |
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category = 'syncsession' |
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# user/groups synchronisation ################################################# |
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class _GroupOperation(hook.Operation): |
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"""base class for group operation""" |
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geid = None |
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def __init__(self, session, *args, **kwargs): |
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"""override to get the group name before actual groups manipulation: |
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we may temporarily loose right access during a commit event, so |
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no query should be emitted while comitting |
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""" |
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rql = 'Any N WHERE G eid %(x)s, G name N' |
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result = session.execute(rql, {'x': kwargs['geid']}, 'x', build_descr=False) |
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hook.Operation.__init__(self, session, *args, **kwargs) |
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self.group = result[0][0] |
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class _DeleteGroupOp(_GroupOperation): |
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"""synchronize user when a in_group relation has been deleted""" |
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def commit_event(self): |
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"""the observed connections pool has been commited""" |
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groups = self.cnxuser.groups |
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try: |
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groups.remove(self.group) |
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except KeyError: |
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self.error('user %s not in group %s', self.cnxuser, self.group) |
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return |
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class _AddGroupOp(_GroupOperation): |
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"""synchronize user when a in_group relation has been added""" |
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def commit_event(self): |
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"""the observed connections pool has been commited""" |
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groups = self.cnxuser.groups |
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if self.group in groups: |
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self.warning('user %s already in group %s', self.cnxuser, |
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self.group) |
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return |
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groups.add(self.group) |
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class SyncInGroupHook(SyncSessionHook): |
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__regid__ = 'syncingroup' |
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__select__ = SyncSessionHook.__select__ & hook.match_rtype('in_group') |
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events = ('after_delete_relation', 'after_add_relation') |
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def __call__(self): |
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if self.event == 'after_delete_relation': |
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opcls = _DeleteGroupOp |
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else: |
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opcls = _AddGroupOp |
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for session in get_user_sessions(self._cw.repo, self.eidfrom): |
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opcls(self._cw, cnxuser=session.user, geid=self.eidto) |
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class _DelUserOp(hook.Operation): |
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"""close associated user's session when it is deleted""" |
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def __init__(self, session, cnxid): |
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self.cnxid = cnxid |
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hook.Operation.__init__(self, session) |
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def commit_event(self): |
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"""the observed connections pool has been commited""" |
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try: |
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self.session.repo.close(self.cnxid) |
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except BadConnectionId: |
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pass # already closed |
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class CloseDeletedUserSessionsHook(SyncSessionHook): |
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__regid__ = 'closession' |
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__select__ = SyncSessionHook.__select__ & implements('CWUser') |
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events = ('after_delete_entity',) |
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def __call__(self): |
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"""modify user permission, need to update users""" |
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for session in get_user_sessions(self._cw.repo, self.entity.eid): |
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_DelUserOp(self._cw, session.id) |
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# CWProperty hooks ############################################################# |
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108 |
|
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109 |
class _DelCWPropertyOp(hook.Operation): |
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110 |
"""a user's custom properties has been deleted""" |
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111 |
|
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112 |
def commit_event(self): |
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113 |
"""the observed connections pool has been commited""" |
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114 |
try: |
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115 |
del self.cwpropdict[self.key] |
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116 |
except KeyError: |
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117 |
self.error('%s has no associated value', self.key) |
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118 |
|
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119 |
|
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120 |
class _ChangeCWPropertyOp(hook.Operation): |
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121 |
"""a user's custom properties has been added/changed""" |
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122 |
|
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123 |
def commit_event(self): |
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124 |
"""the observed connections pool has been commited""" |
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125 |
self.cwpropdict[self.key] = self.value |
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126 |
|
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|
127 |
|
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128 |
class _AddCWPropertyOp(hook.Operation): |
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129 |
"""a user's custom properties has been added/changed""" |
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130 |
|
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131 |
def commit_event(self): |
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132 |
"""the observed connections pool has been commited""" |
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133 |
cwprop = self.cwprop |
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134 |
if not cwprop.for_user: |
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135 |
self.session.vreg['propertyvalues'][cwprop.pkey] = cwprop.value |
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136 |
# if for_user is set, update is handled by a ChangeCWPropertyOp operation |
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137 |
|
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|
138 |
|
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139 |
class AddCWPropertyHook(SyncSessionHook): |
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140 |
__regid__ = 'addcwprop' |
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141 |
__select__ = SyncSessionHook.__select__ & implements('CWProperty') |
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142 |
events = ('after_add_entity',) |
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143 |
|
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144 |
def __call__(self): |
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key, value = self.entity.pkey, self.entity.value |
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146 |
session = self._cw |
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147 |
try: |
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148 |
value = session.vreg.typed_value(key, value) |
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149 |
except UnknownProperty: |
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150 |
raise ValidationError(self.entity.eid, |
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151 |
{'pkey': session._('unknown property key')}) |
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152 |
except ValueError, ex: |
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153 |
raise ValidationError(self.entity.eid, |
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154 |
{'value': session._(str(ex))}) |
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155 |
if not session.user.matching_groups('managers'): |
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156 |
session.add_relation(entity.eid, 'for_user', session.user.eid) |
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157 |
else: |
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158 |
_AddCWPropertyOp(session, cwprop=self.entity) |
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|
159 |
|
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|
160 |
|
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161 |
class UpdateCWPropertyHook(AddCWPropertyHook): |
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162 |
__regid__ = 'updatecwprop' |
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163 |
events = ('after_update_entity',) |
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|
164 |
|
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|
165 |
def __call__(self): |
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166 |
entity = self.entity |
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167 |
if not ('pkey' in entity.edited_attributes or |
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168 |
'value' in entity.edited_attributes): |
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169 |
return |
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170 |
key, value = entity.pkey, entity.value |
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171 |
session = self._cw |
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172 |
try: |
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173 |
value = session.vreg.typed_value(key, value) |
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|
174 |
except UnknownProperty: |
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175 |
return |
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|
176 |
except ValueError, ex: |
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177 |
raise ValidationError(entity.eid, {'value': session._(str(ex))}) |
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|
178 |
if entity.for_user: |
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179 |
for session_ in get_user_sessions(session.repo, entity.for_user[0].eid): |
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180 |
_ChangeCWPropertyOp(session, cwpropdict=session_.user.properties, |
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181 |
key=key, value=value) |
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182 |
else: |
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|
183 |
# site wide properties |
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184 |
_ChangeCWPropertyOp(session, cwpropdict=session.vreg['propertyvalues'], |
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185 |
key=key, value=value) |
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|
186 |
|
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|
187 |
|
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|
188 |
class DeleteCWPropertyHook(AddCWPropertyHook): |
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189 |
__regid__ = 'delcwprop' |
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190 |
events = ('before_delete_entity',) |
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191 |
|
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|
192 |
def __call__(self): |
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193 |
eid = self.entity.eid |
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194 |
session = self._cw |
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195 |
for eidfrom, rtype, eidto in session.transaction_data.get('pendingrelations', ()): |
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196 |
if rtype == 'for_user' and eidfrom == self.entity.eid: |
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197 |
# if for_user was set, delete has already been handled |
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198 |
break |
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199 |
else: |
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|
200 |
_DelCWPropertyOp(session, cwpropdict=session.vreg['propertyvalues'], |
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201 |
key=self.entity.pkey) |
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202 |
|
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|
203 |
|
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204 |
class AddForUserRelationHook(SyncSessionHook): |
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205 |
__regid__ = 'addcwpropforuser' |
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206 |
__select__ = SyncSessionHook.__select__ & hook.match_rtype('for_user') |
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|
207 |
events = ('after_add_relation',) |
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|
208 |
|
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|
209 |
def __call__(self): |
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210 |
session = self._cw |
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211 |
eidfrom = self.eidfrom |
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|
212 |
if not session.describe(eidfrom)[0] == 'CWProperty': |
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|
213 |
return |
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|
214 |
key, value = session.execute('Any K,V WHERE P eid %(x)s,P pkey K,P value V', |
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|
215 |
{'x': eidfrom}, 'x')[0] |
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|
216 |
if session.vreg.property_info(key)['sitewide']: |
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raise ValidationError(eidfrom, |
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{'for_user': session._("site-wide property can't be set for user")}) |
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for session_ in get_user_sessions(session.repo, self.eidto): |
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_ChangeCWPropertyOp(session, cwpropdict=session_.user.properties, |
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key=key, value=value) |
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222 |
|
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223 |
|
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class DelForUserRelationHook(AddForUserRelationHook): |
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__regid__ = 'delcwpropforuser' |
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events = ('after_delete_relation',) |
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227 |
|
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def __call__(self): |
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session = self._cw |
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key = session.execute('Any K WHERE P eid %(x)s, P pkey K', |
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{'x': self.eidfrom}, 'x')[0][0] |
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session.transaction_data.setdefault('pendingrelations', []).append( |
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(self.eidfrom, self.rtype, self.eidto)) |
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for session_ in get_user_sessions(session.repo, self.eidto): |
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_DelCWPropertyOp(session, cwpropdict=session_.user.properties, key=key) |