/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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.seasar.framework.aop.interceptors;
import org.aopalliance.intercept.MethodInvocation;
import org.seasar.framework.log.Logger;
/**
* {@link ClassLoader}の情報も出力する{@link TraceInterceptor}です。
*
* @author shot
*/
public class ClassLoaderAwareTraceInterceptor extends TraceInterceptor {
private static final long serialVersionUID = 1L;
private static final Logger logger = Logger
.getLogger(TraceInterceptor.class);
public Object invoke(final MethodInvocation invocation) throws Throwable {
if (!logger.isDebugEnabled()) {
return invocation.proceed();
}
final StringBuffer buf = new StringBuffer(256);
appendClassLoader(buf, invocation.getThis());
final Class targetClass = getTargetClass(invocation);
buf.append(targetClass.getName());
buf.append("#");
buf.append(invocation.getMethod().getName());
buf.append("(");
final Object[] args = invocation.getArguments();
if (args != null && args.length > 0) {
for (int i = 0; i < args.length; ++i) {
final Object arg = args[i];
appendObject(buf, arg);
appendClassLoader(buf, arg);
buf.append(", ");
}
buf.setLength(buf.length() - 2);
}
buf.append(")");
Object ret = null;
Throwable cause = null;
logger.debug("BEGIN " + buf);
try {
ret = invocation.proceed();
buf.append(" : ");
appendObject(buf, ret);
appendClassLoader(buf, ret);
} catch (final Throwable t) {
buf.append(" Throwable:").append(t);
cause = t;
}
logger.debug("END " + buf);
if (cause != null) {
throw cause;
}
return ret;
}
/**
* クラスローダの情報を追加します。
*
* @param buf
* バッファ
* @param obj
* オブジェクト
* @return 結果のバッファ
*/
protected StringBuffer appendClassLoader(final StringBuffer buf,
final Object obj) {
if (obj != null) {
final ClassLoader classLoader = obj.getClass().getClassLoader();
if (classLoader != null) {
buf.append("<").append(classLoader.toString()).append(">");
}
}
return buf;
}
}