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Viewing file:     metrics.js (1.99 KB)      -rw-r--r--

/*
 * 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
 *
 *      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.
 */
import { NOOP_METER_PROVIDER } from '../metrics/NoopMeterProvider';
import { getGlobal, registerGlobal, unregisterGlobal, } from '../internal/global-utils';
import { DiagAPI } from './diag';
const API_NAME = 'metrics';
/**
 * Singleton object which represents the entry point to the OpenTelemetry Metrics API
 */
export class MetricsAPI {
    /** Empty private constructor prevents end users from constructing a new instance of the API */
    constructor() { }
    /** Get the singleton instance of the Metrics API */
    static getInstance() {
        if (!this._instance) {
            this._instance = new MetricsAPI();
        }
        return this._instance;
    }
    /**
     * Set the current global meter provider.
     * Returns true if the meter provider was successfully registered, else false.
     */
    setGlobalMeterProvider(provider) {
        return registerGlobal(API_NAME, provider, DiagAPI.instance());
    }
    /**
     * Returns the global meter provider.
     */
    getMeterProvider() {
        return getGlobal(API_NAME) || NOOP_METER_PROVIDER;
    }
    /**
     * Returns a meter from the global meter provider.
     */
    getMeter(name, version, options) {
        return this.getMeterProvider().getMeter(name, version, options);
    }
    /** Remove the global meter provider */
    disable() {
        unregisterGlobal(API_NAME, DiagAPI.instance());
    }
}
//# sourceMappingURL=metrics.js.map