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# -*- coding: utf-8 -*-
# errors.py
# Copyright (C) 2013 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Soledad errors.
"""
from u1db import errors
from u1db.remote import http_errors
def register_exception(cls):
"""
A small decorator that registers exceptions in u1db maps.
"""
# update u1db "wire description to status" and "wire description to
# exception" maps.
http_errors.wire_description_to_status.update({
cls.wire_description: cls.status})
errors.wire_description_to_exc.update({
cls.wire_description: cls})
# do not modify the exception
return cls
class SoledadError(errors.U1DBError):
"""
Base Soledad HTTP errors.
"""
pass
#
# Authorization errors
#
@register_exception
class InvalidAuthTokenError(errors.Unauthorized):
"""
Exception raised when failing to get authorization for some action because
the provided token either does not exist in the tokens database, has a
distinct structure from the expected one, or is associated with a user
with a distinct uuid than the one provided by the client.
"""
wire_descrition = "invalid auth token"
status = 401
#
# LockResource errors
#
@register_exception
class InvalidTokenError(SoledadError):
"""
Exception raised when trying to unlock shared database with invalid token.
"""
wire_description = "unlock unauthorized"
status = 401
@register_exception
class NotLockedError(SoledadError):
"""
Exception raised when trying to unlock shared database when it is not
locked.
"""
wire_description = "lock not found"
status = 404
@register_exception
class AlreadyLockedError(SoledadError):
"""
Exception raised when trying to lock shared database but it is already
locked.
"""
wire_description = "lock is locked"
status = 403
@register_exception
class LockTimedOutError(SoledadError):
"""
Exception raised when timing out while trying to lock the shared database.
"""
wire_description = "lock timed out"
status = 408
@register_exception
class CouldNotObtainLockError(SoledadError):
"""
Exception raised when timing out while trying to lock the shared database.
"""
wire_description = "error obtaining lock"
status = 500
#
# CouchDatabase errors
#
@register_exception
class MissingDesignDocError(SoledadError):
"""
Raised when trying to access a missing couch design document.
"""
wire_description = "missing design document"
status = 500
@register_exception
class MissingDesignDocNamedViewError(SoledadError):
"""
Raised when trying to access a missing named view on a couch design
document.
"""
wire_description = "missing design document named function"
status = 500
@register_exception
class MissingDesignDocListFunctionError(SoledadError):
"""
Raised when trying to access a missing list function on a couch design
document.
"""
wire_description = "missing design document list function"
status = 500
@register_exception
class MissingDesignDocDeletedError(SoledadError):
"""
Raised when trying to access a deleted couch design document.
"""
wire_description = "design document was deleted"
status = 500
@register_exception
class DesignDocUnknownError(SoledadError):
"""
Raised when trying to access a couch design document and getting an
unknown error.
"""
wire_description = "missing design document unknown error"
status = 500
# u1db error statuses also have to be updated
http_errors.ERROR_STATUSES = set(
http_errors.wire_description_to_status.values())
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