_exceptions.py
author Pierre-Yves David <pierre-yves.david@logilab.fr>
Fri, 07 Dec 2012 17:23:04 +0100
changeset 9030 c1d5e8ca15ea
parent 8695 358d8bed9626
child 9175 a7412e884d7b
permissions -rw-r--r--
remove vreg argument to CWPublisher The passing a vreg to CWPublisher was used by test to allow reused of an existing vreg. We dropped this feature two commit ago and can safely removes it. Removing this argument allows later cleanup and improvement on the CWPublisher and Repository front. closes #2944813
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# copyright 2003-2012 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 yams import ValidationError as 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 __str__(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(unicode(arg) for arg in self.args)
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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 occurs"""
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class SecurityError(CubicWebException):
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    """base class for cubicweb server security exception"""
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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 when an attempt to establish a connection failed do 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 ETypeNotSupportedBySources(RepositoryError, InternalError):
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    """no source support an entity type"""
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    msg = 'No source supports %r entity\'s type'
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class MultiSourcesError(RepositoryError, InternalError):
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    """usually due to bad multisources configuration or rql query"""
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class UniqueTogetherError(RepositoryError):
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    """raised when a unique_together constraint caused an IntegrityError"""
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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 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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      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 occured during undoing
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    """
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    msg = u"The following error(s) occured 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
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# tools exceptions ############################################################
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class ExecutionError(Exception):
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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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