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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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.
 */

package org.elasticsearch.common.metrics;

import java.util.concurrent.atomic.LongAdder;

public class CounterMetric implements Metric {

    private final LongAdder counter = new LongAdder();

    public void inc() {
        counter.increment();
    }

    public void inc(long n) {
        counter.add(n);
    }

    public void dec() {
        counter.decrement();
    }

    public void dec(long n) {
        counter.add(-n);
    }

    public long count() {
        return counter.sum();
    }
}