// *****************************************************************************
// Copyright (C) 2018 Ericsson and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// http://www.eclipse.org/legal/epl-2.0.
//
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License v. 2.0 are satisfied: GNU General Public License, version 2
// with the GNU Classpath Exception which is available at
// https://www.gnu.org/software/classpath/license.html.
//
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
// *****************************************************************************

import * as prom from 'prom-client';
import { injectable } from '@theia/core/shared/inversify';
import { MetricsContribution } from './metrics-contribution';

@injectable()
export class NodeMetricsContribution implements MetricsContribution {
    getMetrics(): string {
        return prom.register.metrics().toString();
    }

    startCollecting(): void {
        const collectDefaultMetrics = prom.collectDefaultMetrics;

        // Probe every 5th second.
        collectDefaultMetrics({ timeout: 5000 });
    }
}
