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MetricObservable.ts
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MetricObservable.ts
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/*!
* Copyright 2020, 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
*
* https://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.
*/
/**
* Metric Observable class to handle asynchronous metrics
*/
export interface MetricObservable {
/**
* Sets the next value for observable metric
* @param value
*/
next: (value: number) => void;
/**
* Subscribes for every value change
* @param callback
*/
subscribe: (callback: (value: number) => void) => void;
/**
* Removes the subscriber
* @param [callback]
*/
unsubscribe: (callback?: (value: number) => void) => void;
}