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; 018 019import org.apache.camel.Exchange; 020 021/** 022 * Delegates to another {@link PerformanceCounter}. 023 * <p/> 024 * This is used to allow Camel to pre initialize these delegate performance counters when Camel creates the actual route 025 * from the model. Then later as the various processors, routes etc. is created and registered in the 026 * {@link org.apache.camel.spi.LifecycleStrategy} then we link this to the real 027 * {@link org.apache.camel.management.mbean.ManagedPerformanceCounter} mbean so the mbean can gather statistics. 028 * <p/> 029 * This delegation is needed as how Camel is designed to register services in the 030 * {@link org.apache.camel.spi.LifecycleStrategy} in various stages. 031 */ 032public class DelegatePerformanceCounter implements PerformanceCounter { 033 034 private PerformanceCounter counter; 035 private boolean statisticsEnabled; 036 037 public DelegatePerformanceCounter() { 038 } 039 040 public void setCounter(PerformanceCounter counter) { 041 this.counter = counter; 042 // init statistics based on the real counter based on how we got initialized 043 this.counter.setStatisticsEnabled(statisticsEnabled); 044 } 045 046 @Override 047 public void processExchange(Exchange exchange) { 048 if (counter != null) { 049 counter.processExchange(exchange); 050 } 051 } 052 053 @Override 054 public void completedExchange(Exchange exchange, long time) { 055 if (counter != null) { 056 counter.completedExchange(exchange, time); 057 } 058 } 059 060 @Override 061 public void failedExchange(Exchange exchange) { 062 counter.failedExchange(exchange); 063 } 064 065 @Override 066 public boolean isStatisticsEnabled() { 067 // statistics is only considered enabled if we have a counter to delegate to 068 // otherwise we do not want to gather statistics (we are just a delegate with none to delegate to) 069 return counter != null && counter.isStatisticsEnabled(); 070 } 071 072 @Override 073 public void setStatisticsEnabled(boolean statisticsEnabled) { 074 if (counter != null) { 075 counter.setStatisticsEnabled(statisticsEnabled); 076 } else { 077 this.statisticsEnabled = statisticsEnabled; 078 } 079 } 080 081 @Override 082 public String toString() { 083 return counter != null ? counter.toString() : super.toString(); 084 } 085}