author | Julien Cristau <julien.cristau@logilab.fr> |
Mon, 09 Nov 2015 17:08:21 +0100 | |
changeset 10882 | 634cc266e48f |
parent 10829 | 550c2d27339f |
child 10903 | da30851f9706 |
permissions | -rw-r--r-- |
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# copyright 2003-2013 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""Exceptions shared by different cubicweb packages.""" |
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__docformat__ = "restructuredtext en" |
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from warnings import warn |
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from six import PY3, text_type |
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from logilab.common.decorators import cachedproperty |
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from yams import ValidationError |
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# abstract exceptions ######################################################### |
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class CubicWebException(Exception): |
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"""base class for cubicweb server exception""" |
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msg = "" |
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def __unicode__(self): |
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if self.msg: |
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if self.args: |
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return self.msg % tuple(self.args) |
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else: |
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return self.msg |
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else: |
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return u' '.join(text_type(arg) for arg in self.args) |
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__str__ = __unicode__ if PY3 else lambda self: self.__unicode__().encode('utf-8') |
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class ConfigurationError(CubicWebException): |
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"""a misconfiguration error""" |
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class InternalError(CubicWebException): |
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"""base class for exceptions which should not occur""" |
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class SecurityError(CubicWebException): |
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"""base class for cubicweb server security exceptions""" |
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class RepositoryError(CubicWebException): |
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"""base class for repository exceptions""" |
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class SourceException(CubicWebException): |
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"""base class for source exceptions""" |
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class CubicWebRuntimeError(CubicWebException): |
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"""base class for runtime exceptions""" |
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# repository exceptions ####################################################### |
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class ConnectionError(RepositoryError): |
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"""raised when a bad connection id is given or when an attempt to establish |
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a connection failed |
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""" |
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class AuthenticationError(ConnectionError): |
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"""raised when an attempt to establish a connection failed due to wrong |
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connection information (login / password or other authentication token) |
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""" |
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class BadConnectionId(ConnectionError): |
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"""raised when a bad connection id is given""" |
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class UnknownEid(RepositoryError): |
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"""the eid is not defined in the system tables""" |
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msg = 'No entity with eid %s in the repository' |
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class UniqueTogetherError(RepositoryError): |
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"""raised when a unique_together constraint caused an IntegrityError""" |
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def __init__(self, session, **kwargs): |
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self.session = session |
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assert 'rtypes' in kwargs or 'cstrname' in kwargs |
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self.kwargs = kwargs |
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# fill cache while the session is open |
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self.rtypes |
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@cachedproperty |
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def rtypes(self): |
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if 'rtypes' in self.kwargs: |
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return self.kwargs['rtypes'] |
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cstrname = unicode(self.kwargs['cstrname']) |
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cstr = self.session.find('CWUniqueTogetherConstraint', name=cstrname).one() |
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return sorted(rtype.name for rtype in cstr.relations) |
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@cachedproperty |
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def args(self): |
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warn('[3.18] UniqueTogetherError.args is deprecated, just use ' |
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'the .rtypes accessor.', |
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DeprecationWarning) |
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# the first argument, etype, is never used and was never garanteed anyway |
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return None, self.rtypes |
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class ViolatedConstraint(RepositoryError): |
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def __init__(self, cnx, cstrname): |
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self.cnx = cnx |
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self.cstrname = cstrname |
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# security exceptions ######################################################### |
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class Unauthorized(SecurityError): |
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"""raised when a user tries to perform an action without sufficient |
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credentials |
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""" |
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msg = 'You are not allowed to perform this operation' |
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msg1 = 'You are not allowed to perform %s operation on %s' |
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var = None |
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def __str__(self): |
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try: |
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if self.args and len(self.args) == 2: |
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return self.msg1 % self.args |
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if self.args: |
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return ' '.join(self.args) |
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return self.msg |
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except Exception as ex: |
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return str(ex) |
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class Forbidden(SecurityError): |
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"""raised when a user tries to perform a forbidden action |
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""" |
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# source exceptions ########################################################### |
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class EidNotInSource(SourceException): |
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"""trying to access an object with a particular eid from a particular |
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source has failed |
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""" |
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msg = 'No entity with eid %s in %s' |
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# registry exceptions ######################################################### |
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# pre 3.15 bw compat |
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from logilab.common.registry import RegistryException, ObjectNotFound, NoSelectableObject |
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class UnknownProperty(RegistryException): |
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"""property found in database but unknown in registry""" |
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# query exception ############################################################# |
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class QueryError(CubicWebRuntimeError): |
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"""a query try to do something it shouldn't""" |
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class NotAnEntity(CubicWebRuntimeError): |
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"""raised when get_entity is called for a column which doesn't contain |
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a non final entity |
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""" |
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class MultipleResultsError(CubicWebRuntimeError): |
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"""raised when ResultSet.one() is called on a resultset with multiple rows |
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of multiple columns. |
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""" |
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class NoResultError(CubicWebRuntimeError): |
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"""raised when no result is found but at least one is expected. |
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""" |
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class UndoTransactionException(QueryError): |
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"""Raised when undoing a transaction could not be performed completely. |
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Note that : |
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1) the partial undo operation might be acceptable |
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depending upon the final application |
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|
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2) the undo operation can also fail with a `ValidationError` in |
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cases where the undoing breaks integrity constraints checked |
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immediately. |
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3) It might be that neither of those exception is raised but a |
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subsequent `commit` might raise a `ValidationError` in cases |
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where the undoing breaks integrity constraints checked at |
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commit time. |
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:type txuuix: int |
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:param txuuid: Unique identifier of the partialy undone transaction |
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:type errors: list |
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:param errors: List of errors occurred during undoing |
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""" |
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msg = u"The following error(s) occurred while undoing transaction #%d : %s" |
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def __init__(self, txuuid, errors): |
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super(UndoTransactionException, self).__init__(txuuid, errors) |
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self.txuuid = txuuid |
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self.errors = errors |
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0 | 203 |
# tools exceptions ############################################################ |
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"""server execution control error (already started, not running...)""" |
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# pylint: disable=W0611 |
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from logilab.common.clcommands import BadCommandUsage |
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