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.AsyncCallback; 020import org.apache.camel.Exchange; 021import org.apache.camel.Ordered; 022import org.apache.camel.Processor; 023import org.apache.camel.management.mbean.ManagedPerformanceCounter; 024import org.apache.camel.spi.ManagementInterceptStrategy.InstrumentationProcessor; 025import org.apache.camel.support.processor.DelegateAsyncProcessor; 026import org.apache.camel.util.StopWatch; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030/** 031 * JMX enabled processor or advice that uses the {@link org.apache.camel.management.mbean.ManagedCounter} for 032 * instrumenting processing of exchanges. 033 * <p/> 034 * This implementation has been optimised to work in dual mode, either as an advice or as a processor. The former is 035 * faster and the latter is required when the error handler has been configured with redelivery enabled. 036 */ 037public class DefaultInstrumentationProcessor extends DelegateAsyncProcessor 038 implements InstrumentationProcessor<StopWatch>, Ordered { 039 040 private static final Logger LOG = LoggerFactory.getLogger(DefaultInstrumentationProcessor.class); 041 042 private PerformanceCounter counter; 043 private String type; 044 045 public DefaultInstrumentationProcessor(String type, Processor processor) { 046 super(processor); 047 this.type = type; 048 } 049 050 public DefaultInstrumentationProcessor(String type) { 051 super(null); 052 this.type = type; 053 } 054 055 @Override 056 public void setCounter(Object counter) { 057 ManagedPerformanceCounter mpc = null; 058 if (counter instanceof ManagedPerformanceCounter) { 059 mpc = (ManagedPerformanceCounter) counter; 060 } 061 062 if (this.counter instanceof DelegatePerformanceCounter) { 063 ((DelegatePerformanceCounter) this.counter).setCounter(mpc); 064 } else if (mpc != null) { 065 this.counter = mpc; 066 } else if (counter instanceof PerformanceCounter) { 067 this.counter = (PerformanceCounter) counter; 068 } 069 } 070 071 @Override 072 public boolean process(final Exchange exchange, final AsyncCallback callback) { 073 final StopWatch watch = before(exchange); 074 075 // optimize to only create a new callback if needed 076 AsyncCallback ac = callback; 077 boolean newCallback = watch != null; 078 if (newCallback) { 079 ac = doneSync -> { 080 try { 081 // record end time 082 after(exchange, watch); 083 } finally { 084 // and let the original callback know we are done as well 085 callback.done(doneSync); 086 } 087 }; 088 } 089 090 return processor.process(exchange, ac); 091 } 092 093 protected void beginTime(Exchange exchange) { 094 counter.processExchange(exchange, type); 095 } 096 097 protected void recordTime(Exchange exchange, long duration) { 098 if (LOG.isTraceEnabled()) { 099 LOG.trace("{}Recording duration: {} millis for exchange: {}", type != null ? type + ": " : "", duration, exchange); 100 } 101 102 if (!exchange.isFailed() && exchange.getException() == null) { 103 counter.completedExchange(exchange, duration); 104 } else { 105 counter.failedExchange(exchange); 106 } 107 } 108 109 public String getType() { 110 return type; 111 } 112 113 public void setType(String type) { 114 this.type = type; 115 } 116 117 @Override 118 public StopWatch before(Exchange exchange) { 119 // only record time if stats is enabled 120 StopWatch answer = counter != null && counter.isStatisticsEnabled() ? new StopWatch() : null; 121 if (answer != null) { 122 beginTime(exchange); 123 } 124 return answer; 125 } 126 127 @Override 128 public void after(Exchange exchange, StopWatch watch) { 129 // record end time 130 if (watch != null) { 131 recordTime(exchange, watch.taken()); 132 } 133 } 134 135 @Override 136 public String toString() { 137 return "InstrumentProcessorAdvice"; 138 } 139 140 @Override 141 public int getOrder() { 142 // we want instrumentation before calling the processor (but before tracer/debugger) 143 return Ordered.LOWEST - 2; 144 } 145}