001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.management.mbean;
018
019import java.util.Date;
020
021import org.apache.camel.api.management.ManagedResource;
022import org.apache.camel.api.management.mbean.ManagedCounterMBean;
023import org.apache.camel.spi.ManagementStrategy;
024
025@ManagedResource(description = "Managed Counter")
026public abstract class ManagedCounter implements ManagedCounterMBean {
027    protected Statistic exchangesTotal;
028    protected Statistic resetTimestamp;
029
030    public void init(ManagementStrategy strategy) {
031        this.exchangesTotal = new Statistic("org.apache.camel.exchangesTotal", this, Statistic.UpdateMode.COUNTER);
032        this.resetTimestamp = new Statistic("org.apache.camel.resetTimestamp", this, Statistic.UpdateMode.VALUE);
033        resetTimestamp.updateValue(new Date().getTime());
034    }
035
036    public synchronized void reset() {
037        exchangesTotal.reset();
038        resetTimestamp.updateValue(new Date().getTime());
039    }
040
041    public Date getResetTimestamp() {
042        long value = resetTimestamp.getValue();
043        return value > 0 ? new Date(value) : null;
044    }
045
046    public long getExchangesTotal() throws Exception {
047        return exchangesTotal.getValue();
048    }
049
050    public synchronized void increment() {
051        exchangesTotal.increment();
052    }
053}