# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.

__all__ = [
    "Provider",
    "State",
    "LibcloudLBError",
    "LibcloudLBImmutableError",
    "OLD_CONSTANT_TO_NEW_MAPPING",
]

from libcloud.common.types import LibcloudError


class LibcloudLBError(LibcloudError):
    pass


class LibcloudLBImmutableError(LibcloudLBError):
    pass


class Provider(object):
    """
    Defines for each of the supported providers

    Non-Dummy drivers are sorted in alphabetical order. Please preserve this
    ordering when adding new drivers.

    :cvar ALIYUN_SLB: Aliyun SLB loadbalancer driver
    """

    ALB = "alb"
    ALIYUN_SLB = "aliyun_slb"
    BRIGHTBOX = "brightbox"
    CLOUDSTACK = "cloudstack"
    DIMENSIONDATA = "dimensiondata"
    ELB = "elb"
    GCE = "gce"
    GOGRID = "gogrid"
    NINEFOLD = "ninefold"
    NTTCIS = "nttcis"
    RACKSPACE = "rackspace"
    SOFTLAYER = "softlayer"

    # Deprecated
    RACKSPACE_US = "rackspace_us"
    RACKSPACE_UK = "rackspace_uk"


OLD_CONSTANT_TO_NEW_MAPPING = {
    Provider.RACKSPACE_US: Provider.RACKSPACE,
    Provider.RACKSPACE_UK: Provider.RACKSPACE,
}


class State(object):
    """
    Standard states for a loadbalancer

    :cvar RUNNING: loadbalancer is running and ready to use
    :cvar UNKNOWN: loabalancer state is unknown
    """

    RUNNING = 0
    PENDING = 1
    UNKNOWN = 2
    ERROR = 3
    DELETED = 4


class MemberCondition(object):
    """
    Each member of a load balancer can have an associated condition
    which determines its role within the load balancer.
    """

    ENABLED = 0
    DISABLED = 1
    DRAINING = 2