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exceptions.py
186 lines | 4.3 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
# Copyright (C) 2014-2016 RhodeCode GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License, version 3
# (only), as published by the Free Software Foundation.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# This program is dual-licensed. If you wish to learn more about the
# RhodeCode Enterprise Edition, including its added features, Support services,
# and proprietary license terms, please see https://rhodecode.com/licenses/
"""
Custom vcs exceptions module.
"""
import functools
import urllib2
class VCSError(Exception):
pass
class RepositoryError(VCSError):
pass
class RepositoryRequirementError(RepositoryError):
pass
class VCSBackendNotSupportedError(VCSError):
"""
Exception raised when VCSServer does not support requested backend
"""
class EmptyRepositoryError(RepositoryError):
pass
class TagAlreadyExistError(RepositoryError):
pass
class TagDoesNotExistError(RepositoryError):
pass
class BranchAlreadyExistError(RepositoryError):
pass
class BranchDoesNotExistError(RepositoryError):
pass
class CommitError(RepositoryError):
"""
Exceptions related to an existing commit
"""
class CommitDoesNotExistError(CommitError):
pass
class CommittingError(RepositoryError):
"""
Exceptions happening while creating a new commit
"""
class NothingChangedError(CommittingError):
pass
class NodeError(VCSError):
pass
class RemovedFileNodeError(NodeError):
pass
class NodeAlreadyExistsError(CommittingError):
pass
class NodeAlreadyChangedError(CommittingError):
pass
class NodeDoesNotExistError(CommittingError):
pass
class NodeNotChangedError(CommittingError):
pass
class NodeAlreadyAddedError(CommittingError):
pass
class NodeAlreadyRemovedError(CommittingError):
pass
class ImproperArchiveTypeError(VCSError):
pass
class CommandError(VCSError):
pass
class UnhandledException(VCSError):
"""
Signals that something unexpected went wrong.
This usually means we have a programming error on the side of the VCSServer
and should inspect the logfile of the VCSServer to find more details.
"""
_EXCEPTION_MAP = {
'abort': RepositoryError,
'archive': ImproperArchiveTypeError,
'error': RepositoryError,
'lookup': CommitDoesNotExistError,
'repo_locked': RepositoryError,
'requirement': RepositoryRequirementError,
'unhandled': UnhandledException,
# TODO: johbo: Define our own exception for this and stop abusing
# urllib's exception class.
'url_error': urllib2.URLError,
}
def map_vcs_exceptions(func):
"""
Utility to decorate functions so that plain exceptions are translated.
The translation is based on `exc_map` which maps a `str` indicating
the error type into an exception class representing this error inside
of the vcs layer.
"""
@functools.wraps(func)
def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception as e:
# The error middleware adds information if it finds
# __traceback_info__ in a frame object. This way the remote
# traceback information is made available in error reports.
remote_tb = getattr(e, '_pyroTraceback', None)
if remote_tb:
__traceback_info__ = (
'Found Pyro4 remote traceback information:\n\n' +
'\n'.join(remote_tb))
# Avoid that remote_tb also appears in the frame
del remote_tb
# Special vcs errors had an attribute "_vcs_kind" which is used
# to translate them to the proper exception class in the vcs
# client layer.
kind = getattr(e, '_vcs_kind', None)
if kind:
raise _EXCEPTION_MAP[kind](*e.args)
else:
raise
return wrapper