CollectionMetric.java

/**
 * Licensed to DigitalPebble Ltd under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * DigitalPebble 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 com.digitalpebble.stormcrawler.util;

import java.util.LinkedList;
import java.util.List;

import org.apache.storm.metric.api.IMetric;

public class CollectionMetric implements IMetric {

    private List<Long> measurements = new LinkedList<>();

    public void addMeasurement(long l) {
        measurements.add(l);
    }

    @Override
    public Object getValueAndReset() {
        LinkedList<Long> copy = new LinkedList<>(measurements);
        measurements.clear();
        return copy;
    }

}