/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.apache.activemq.apollo.util.metric;

public class Period {

    long start = System.currentTimeMillis();
    long end;

    public long getStart() {
        return start;
    }

    public void setStart(long start) {
        this.start = start;
    }

    public long getEnd() {
        if (end == 0) {
            end = System.currentTimeMillis();
        }
        return end;
    }

    public void setEnd(long end) {
        this.end = end;
    }

    public void reset() {
        start = System.currentTimeMillis();
        end = 0;
    }

    public long duration() {
        return getEnd() - getStart();
    }

    public Float rate(Long counter) {
        if (counter == null) {
            return null;
        }
        return ((counter * 1000f) / duration());
    }

    public Float rate(Float counter) {
        if (counter == null) {
            return null;
        }
        return ((counter * 1000f) / duration());
    }

}
