# 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.

from oslo_config import cfg
from oslo_serialization import jsonutils

CONF = cfg.CONF


def utf8_json_decoder(byte_data):
    """Deserializes the bytes into UTF-8 encoded JSON.

    :param byte_data: The bytes to be converted into the UTF-8 encoded JSON.
    :returns: The UTF-8 encoded JSON represented by Python dictionary format.
    """
    return jsonutils.loads(byte_data.decode('utf8'))


def convert_netns(netns):
    """Convert /proc based netns path to Docker-friendly path.

    When CONF.docker_mode is set this method will change /proc to
    /CONF.netns_proc_dir. This allows netns manipulations to work when running
    in Docker container on Kubernetes host.

    :param netns: netns path to convert.
    :return: Converted netns path.
    """
    if CONF.cni_daemon.docker_mode:
        return netns.replace('/proc', CONF.cni_daemon.netns_proc_dir)
    else:
        return netns