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# Copyright 2011-2012 Canonical Ltd.
#
# This file is part of u1db.
#
# u1db is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License version 3
# as published by the Free Software Foundation.
#
# u1db 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with u1db. If not, see <http://www.gnu.org/licenses/>.
"""A list of errors that u1db can raise."""
class U1DBError(Exception):
"""Generic base class for U1DB errors."""
# description/tag for identifying the error during transmission (http,...)
wire_description = "error"
def __init__(self, message=None):
self.message = message
class RevisionConflict(U1DBError):
"""The document revisions supplied does not match the current version."""
wire_description = "revision conflict"
class InvalidJSON(U1DBError):
"""Content was not valid json."""
class InvalidContent(U1DBError):
"""Content was not a python dictionary."""
class InvalidDocId(U1DBError):
"""A document was requested with an invalid document identifier."""
wire_description = "invalid document id"
class MissingDocIds(U1DBError):
"""Needs document ids."""
wire_description = "missing document ids"
class DocumentTooBig(U1DBError):
"""Document exceeds the maximum document size for this database."""
wire_description = "document too big"
class UserQuotaExceeded(U1DBError):
"""Document exceeds the maximum document size for this database."""
wire_description = "user quota exceeded"
class SubscriptionNeeded(U1DBError):
"""User needs a subscription to be able to use this replica.."""
wire_description = "user needs subscription"
class InvalidTransactionId(U1DBError):
"""Invalid transaction for generation."""
wire_description = "invalid transaction id"
class InvalidGeneration(U1DBError):
"""Generation was previously synced with a different transaction id."""
wire_description = "invalid generation"
class InvalidReplicaUID(U1DBError):
"""Attempting to sync a database with itself."""
wire_description = "invalid replica uid"
class ConflictedDoc(U1DBError):
"""The document is conflicted, you must call resolve before put()"""
class InvalidValueForIndex(U1DBError):
"""The values supplied does not match the index definition."""
class InvalidGlobbing(U1DBError):
"""Raised if wildcard matches are not strictly at the tail of the request.
"""
class DocumentDoesNotExist(U1DBError):
"""The document does not exist."""
wire_description = "document does not exist"
class DocumentAlreadyDeleted(U1DBError):
"""The document was already deleted."""
wire_description = "document already deleted"
class DatabaseDoesNotExist(U1DBError):
"""The database does not exist."""
wire_description = "database does not exist"
class IndexNameTakenError(U1DBError):
"""The given index name is already taken."""
class IndexDefinitionParseError(U1DBError):
"""The index definition cannot be parsed."""
class IndexDoesNotExist(U1DBError):
"""No index of that name exists."""
class Unauthorized(U1DBError):
"""Request wasn't authorized properly."""
wire_description = "unauthorized"
class HTTPError(U1DBError):
"""Unspecific HTTP errror."""
wire_description = None
def __init__(self, status, message=None, headers={}):
self.status = status
self.message = message
self.headers = headers
def __str__(self):
if not self.message:
return "HTTPError(%d)" % self.status
else:
return "HTTPError(%d, %r)" % (self.status, self.message)
class Unavailable(HTTPError):
"""Server not available not serve request."""
wire_description = "unavailable"
def __init__(self, message=None, headers={}):
super(Unavailable, self).__init__(503, message, headers)
def __str__(self):
if not self.message:
return "Unavailable()"
else:
return "Unavailable(%r)" % self.message
class BrokenSyncStream(U1DBError):
"""Unterminated or otherwise broken sync exchange stream."""
wire_description = None
class UnknownAuthMethod(U1DBError):
"""Unknown auhorization method."""
wire_description = None
# mapping wire (transimission) descriptions/tags for errors to the exceptions
wire_description_to_exc = dict(
(x.wire_description, x) for x in globals().values()
if getattr(x, 'wire_description', None) not in (None, "error"))
wire_description_to_exc["error"] = U1DBError
#
# wire error descriptions not corresponding to an exception
DOCUMENT_DELETED = "document deleted"
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