/*
* Copyright 2002-2007 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
*
* http://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;
/**
* Simple AOP Alliance <code>MethodInterceptor</code> that can be introduced
* in a chain to display verbose trace information about intercepted method
* invocations, with method entry and method exit info.
*
* <p>Consider using <code>CustomizableTraceInterceptor</code> for more
* advanced needs.
*
* @author Dmitriy Kopylenko
* @author Juergen Hoeller
* @since 1.2
* @see CustomizableTraceInterceptor
*/
public class SimpleTraceInterceptor extends AbstractTraceInterceptor {
/**
* Create a new SimpleTraceInterceptor with a static logger.
*/
public SimpleTraceInterceptor() {
}
/**
* Create a new SimpleTraceInterceptor with dynamic or static logger,
* according to the given flag.
* @param useDynamicLogger whether to use a dynamic logger or a static logger
* @see #setUseDynamicLogger
*/
public SimpleTraceInterceptor(boolean useDynamicLogger) {
setUseDynamicLogger(useDynamicLogger);
}
protected Object invokeUnderTrace(MethodInvocation invocation, Log logger) throws Throwable {
String invocationDescription = getInvocationDescription(invocation);
logger.trace("Entering " + invocationDescription);
try {
Object rval = invocation.proceed();
logger.trace("Exiting " + invocationDescription);
return rval;
}
catch (Throwable ex) {
logger.trace("Exception thrown in " + invocationDescription, ex);
throw ex;
}
}
/**
* Return a description for the given method invocation.
* @param invocation the invocation to describe
* @return the description
*/
protected String getInvocationDescription(MethodInvocation invocation) {
return "method '" + invocation.getMethod().getName() + "' of class [" +
invocation.getThis().getClass().getName() + "]";
}
}