# Copyright The OpenTelemetry Authors
#
# 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.
import typing
LabelValue = typing.Union[str, bool, int, float]
Labels = typing.Dict[str, LabelValue]
[docs]class Resource:
def __init__(self, labels: Labels):
self._labels = labels.copy()
[docs] @staticmethod
def create(labels: Labels) -> "Resource":
if not labels:
return _EMPTY_RESOURCE
return Resource(labels)
[docs] @staticmethod
def create_empty() -> "Resource":
return _EMPTY_RESOURCE
@property
def labels(self) -> Labels:
return self._labels.copy()
[docs] def merge(self, other: "Resource") -> "Resource":
merged_labels = self.labels
# pylint: disable=protected-access
for key, value in other._labels.items():
if key not in merged_labels or merged_labels[key] == "":
merged_labels[key] = value
return Resource(merged_labels)
def __eq__(self, other: object) -> bool:
if not isinstance(other, Resource):
return False
return self._labels == other._labels
_EMPTY_RESOURCE = Resource({})