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- # Copyright 2022 The Matrix.org Foundation C.I.C.
- #
- # 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 abc import ABC, abstractmethod
- from typing import Iterable
-
- from prometheus_client import Metric
-
- try:
- from prometheus_client.registry import Collector
- except ImportError:
- # prometheus_client.Collector is new as of prometheus 0.14. We redefine it here
- # for compatibility with earlier versions.
- class _Collector(ABC):
- @abstractmethod
- def collect(self) -> Iterable[Metric]:
- pass
-
- Collector = _Collector # type: ignore
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