# Copyright 2010-present Basho Technologies, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


class RiakError(Exception):
    """
    Base class for exceptions generated in the Riak API.
    """
    def __init__(self, *args, **kwargs):
        super(RiakError, self).__init__(*args, **kwargs)
        if len(args) > 0:
            self.value = args[0]
        else:
            self.value = 'unknown'

    def __str__(self):
        return repr(self.value)


class ConflictError(RiakError):
    """
    Raised when an operation is attempted on a
    :class:`~riak.riak_object.RiakObject` that has more than one
    sibling.
    """
    def __init__(self, message='Object in conflict'):
        super(ConflictError, self).__init__(message)


class ListError(RiakError):
    """
    Raised when a list operation is attempted and
    riak.disable_list_exceptions is false.
    """
    def __init__(self, message='Bucket and key list operations '
                               'are expensive and should not be '
                               'used in production.'):
        super(ListError, self).__init__(message)
