001/*
002 * Copyright 2002-2017 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.aop.interceptor;
018
019import org.aopalliance.intercept.MethodInvocation;
020import org.apache.commons.logging.Log;
021
022import org.springframework.util.StopWatch;
023
024/**
025 * Simple AOP Alliance {@code MethodInterceptor} for performance monitoring.
026 * This interceptor has no effect on the intercepted method call.
027 *
028 * <p>Uses a {@code StopWatch} for the actual performance measuring.
029 *
030 * @author Rod Johnson
031 * @author Dmitriy Kopylenko
032 * @author Rob Harrop
033 * @see org.springframework.util.StopWatch
034 * @see JamonPerformanceMonitorInterceptor
035 */
036@SuppressWarnings("serial")
037public class PerformanceMonitorInterceptor extends AbstractMonitoringInterceptor {
038
039        /**
040         * Create a new PerformanceMonitorInterceptor with a static logger.
041         */
042        public PerformanceMonitorInterceptor() {
043        }
044
045        /**
046         * Create a new PerformanceMonitorInterceptor with a dynamic or static logger,
047         * according to the given flag.
048         * @param useDynamicLogger whether to use a dynamic logger or a static logger
049         * @see #setUseDynamicLogger
050         */
051        public PerformanceMonitorInterceptor(boolean useDynamicLogger) {
052                setUseDynamicLogger(useDynamicLogger);
053        }
054
055
056        @Override
057        protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
058                String name = createInvocationTraceName(invocation);
059                StopWatch stopWatch = new StopWatch(name);
060                stopWatch.start(name);
061                try {
062                        return invocation.proceed();
063                }
064                finally {
065                        stopWatch.stop();
066                        writeToLog(logger, stopWatch.shortSummary());
067                }
068        }
069
070}