| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.log4j.rewrite; |
| |
| import org.apache.log4j.Logger; |
| import org.apache.log4j.spi.LoggingEvent; |
| |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.StringTokenizer; |
| |
| /** |
| * This policy rewrites events by adding |
| * a user-specified list of properties to the event. |
| * Existing properties are not modified. |
| * <p> |
| * The combination of the RewriteAppender and this policy |
| * performs the same actions as the PropertyFilter from log4j 1.3. |
| */ |
| |
| public class PropertyRewritePolicy implements RewritePolicy { |
| private Map properties = Collections.EMPTY_MAP; |
| |
| public PropertyRewritePolicy() { |
| } |
| |
| /** |
| * Set a string representing the property name/value pairs. |
| * <p> |
| * Form: propname1=propvalue1,propname2=propvalue2 |
| * |
| * @param props |
| */ |
| public void setProperties(String props) { |
| Map<String, String> hashTable = new HashMap<>(); |
| StringTokenizer pairs = new StringTokenizer(props, ","); |
| while (pairs.hasMoreTokens()) { |
| StringTokenizer entry = new StringTokenizer(pairs.nextToken(), "="); |
| hashTable.put(entry.nextElement().toString().trim(), entry.nextElement().toString().trim()); |
| } |
| synchronized (this) { |
| properties = hashTable; |
| } |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public LoggingEvent rewrite(final LoggingEvent source) { |
| if (!properties.isEmpty()) { |
| Map rewriteProps = new HashMap(source.getProperties()); |
| for (Object o : properties.entrySet()) { |
| Map.Entry entry = (Map.Entry) o; |
| if (!rewriteProps.containsKey(entry.getKey())) { |
| rewriteProps.put(entry.getKey(), entry.getValue()); |
| } |
| } |
| |
| return new LoggingEvent( |
| source.getFQNOfLoggerClass(), |
| source.getLogger() != null ? source.getLogger() : Logger.getLogger(source.getLoggerName()), |
| source.getTimeStamp(), |
| source.getLevel(), |
| source.getMessage(), |
| source.getThreadName(), |
| source.getThrowableInformation(), |
| source.getNDC(), |
| source.getLocationInformation(), |
| rewriteProps); |
| } |
| return source; |
| } |
| |
| |
| } |