spring PerformanceMonitorInterceptor 源码
spring PerformanceMonitorInterceptor 代码
文件路径：/spring-aop/src/main/java/org/springframework/aop/interceptor/PerformanceMonitorInterceptor.java
/*
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.aop.interceptor;
import org.aopalliance.intercept.MethodInvocation;
import org.apache.commons.logging.Log;
import org.springframework.util.StopWatch;
/**
* Simple AOP Alliance {@code MethodInterceptor} for performance monitoring.
* This interceptor has no effect on the intercepted method call.
*
* <p>Uses a {@code StopWatch} for the actual performance measuring.
*
* @author Rod Johnson
* @author Dmitriy Kopylenko
* @author Rob Harrop
* @see org.springframework.util.StopWatch
*/
@SuppressWarnings("serial")
public class PerformanceMonitorInterceptor extends AbstractMonitoringInterceptor {
/**
* Create a new PerformanceMonitorInterceptor with a static logger.
*/
public PerformanceMonitorInterceptor() {
}
/**
* Create a new PerformanceMonitorInterceptor with a dynamic or static logger,
* according to the given flag.
* @param useDynamicLogger whether to use a dynamic logger or a static logger
* @see #setUseDynamicLogger
*/
public PerformanceMonitorInterceptor(boolean useDynamicLogger) {
setUseDynamicLogger(useDynamicLogger);
}
@Override
protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
String name = createInvocationTraceName(invocation);
StopWatch stopWatch = new StopWatch(name);
stopWatch.start(name);
try {
return invocation.proceed();
}
finally {
stopWatch.stop();
writeToLog(logger, stopWatch.shortSummary());
}
}
}
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