# Copyright 2017 Google LLC
#
# 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.

"""Monitored Resource for the Google Logging API V2."""

import collections


class Resource(collections.namedtuple("Resource", "type labels")):
    """A monitored resource identified by specifying values for all labels.

    Attributes:
        type (str): The resource type name.
        labels (dict): A mapping from label names to values for all labels
            enumerated in the associated :class:`ResourceDescriptor`.
    """

    __slots__ = ()

    @classmethod
    def _from_dict(cls, info):
        """Construct a resource object from the parsed JSON representation.

        Args:
            info (dict): A ``dict`` parsed from the JSON wire-format representation.

        Returns:
            Resource: A resource object.
        """
        return cls(type=info["type"], labels=info.get("labels", {}))

    def _to_dict(self):
        """Build a dictionary ready to be serialized to the JSON format.

        Returns:
            dict:
                A dict representation of the object that can be written to
                the API.
        """
        return {"type": self.type, "labels": self.labels}