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* The MIT License (MIT) *
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* Copyright (c) 2015-2020 aoju.org and other contributors. *
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package org.aoju.bus.proxy.intercept;
import org.aoju.bus.core.lang.Symbol;
import org.aoju.bus.logger.Logger;
import org.aoju.bus.proxy.Builder;
import org.aoju.bus.proxy.Interceptor;
import org.aoju.bus.proxy.Invocation;
/**
* 记录每个方法调用的拦截器。
* 注意:这个类的实现是从HiveMind的日志拦截器中借来的
*
* @author Kimi Liu
* @version 6.1.1
* @since JDK 1.8+
*/
public class LoggingInterceptor implements Interceptor {
private static final int BUFFER_SIZE = 100;
@Override
public Object intercept(Invocation invocation) throws Throwable {
final String methodName = invocation.getMethod().getName();
entry(methodName, invocation.getArguments());
try {
Object result = invocation.proceed();
if (Void.TYPE.equals(invocation.getMethod().getReturnType())) {
voidExit(methodName);
} else {
exit(methodName, result);
}
return result;
} catch (Throwable t) {
exception(methodName, t);
throw t;
}
}
private void entry(String methodName, Object[] args) {
StringBuffer buffer = new StringBuffer(BUFFER_SIZE);
buffer.append("BEGIN ");
buffer.append(methodName);
buffer.append(Symbol.PARENTHESE_LEFT);
int count = args.length;
for (int i = 0; i < count; i++) {
Object arg = args[i];
if (i > 0) {
buffer.append(", ");
}
convert(buffer, arg);
}
buffer.append(Symbol.PARENTHESE_RIGHT);
Logger.debug(buffer.toString());
}
private void convert(StringBuffer buffer, Object input) {
if (input == null) {
buffer.append("");
return;
}
if (!(input instanceof Object[])) {
buffer.append(input.toString());
return;
}
buffer.append(Symbol.PARENTHESE_LEFT);
buffer.append(Builder.getJavaClassName(input.getClass()));
buffer.append("){");
Object[] array = (Object[]) input;
int count = array.length;
for (int i = 0; i < count; i++) {
if (i > 0) {
buffer.append(", ");
}
convert(buffer, array[i]);
}
buffer.append(Symbol.BRACE_RIGHT);
}
private void exception(String methodName, Throwable t) {
StringBuffer buffer = new StringBuffer(BUFFER_SIZE);
buffer.append("EXCEPTION ");
buffer.append(methodName);
buffer.append("() -- ");
buffer.append(t.getClass().getName());
Logger.debug(buffer.toString(), t);
}
private void exit(String methodName, Object result) {
StringBuffer buffer = new StringBuffer(BUFFER_SIZE);
buffer.append("END ");
buffer.append(methodName);
buffer.append("() [");
convert(buffer, result);
buffer.append(Symbol.BRACKET_RIGHT);
Logger.debug(buffer.toString());
}
private void voidExit(String methodName) {
StringBuffer buffer = new StringBuffer(BUFFER_SIZE);
buffer.append("END ");
buffer.append(methodName);
buffer.append("()");
Logger.debug(buffer.toString());
}
}
