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     */
017    package org.apache.camel.management.mbean;
018    
019    import java.util.Date;
020    
021    import org.apache.camel.api.management.ManagedResource;
022    import org.apache.camel.api.management.mbean.ManagedCounterMBean;
023    import org.apache.camel.spi.ManagementStrategy;
024    
025    @ManagedResource(description = "Managed Counter")
026    public 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    }