001/* 002 * Copyright 2012 Anyware Services 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 * http://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 */ 016package org.ametys.core.util; 017 018import java.net.SocketException; 019 020import org.apache.log4j.spi.Filter; 021import org.apache.log4j.spi.LoggingEvent; 022import org.apache.log4j.spi.ThrowableInformation; 023 024import org.ametys.runtime.authentication.AuthorizationRequiredException; 025 026/** 027 * Simple {@link Filter} not logging internal exceptions, such as AuthorizationRequiredException. 028 */ 029public class AmetysExceptionFilter extends Filter 030{ 031 @Override 032 public int decide(LoggingEvent event) 033 { 034 ThrowableInformation info = event.getThrowableInformation(); 035 if (info != null && info.getThrowable() != null) 036 { 037 Throwable t = info.getThrowable(); 038 if (_unroll(t) instanceof AuthorizationRequiredException) 039 { 040 return Filter.DENY; 041 } 042 043 if (_unroll(t) instanceof SocketException) 044 { 045 return Filter.DENY; 046 } 047 } 048 049 return Filter.NEUTRAL; 050 } 051 052 private Throwable _unroll(Throwable t) 053 { 054 Throwable cause = t.getCause(); 055 056 if (cause == null) 057 { 058 return t; 059 } 060 else 061 { 062 return _unroll(cause); 063 } 064 } 065}