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https://issues.apache.org/jira/browse/LOG4J2-1023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14552835#comment-14552835
]
Gary Gregory edited comment on LOG4J2-1023 at 5/20/15 6:33 PM:
---------------------------------------------------------------
How about this (not tested but it compiles ;-):
{code:java}
/*
* 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.logging.log4j.core.appender.rewrite;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.core.impl.Log4jLogEvent;
import org.apache.logging.log4j.core.util.KeyValuePair;
/**
* Rewrites levels for a given logger name.
*
* @since 2.4
*/
@Plugin(name = "LevelRewritePolicy", category = "Core", elementType =
"rewritePolicy", printObject = true)
public class LoggerNameLevelRewritePolicy implements RewritePolicy {
@PluginFactory
public static LoggerNameLevelRewritePolicy createPolicy(
// @formatter:off
@PluginAttribute("logger") final String loggerName,
@PluginElement("LevelPair") final KeyValuePair[] levelPairs) {
// @formatter:on
Map<Level, Level> newMap = new HashMap<>(levelPairs.length);
for (KeyValuePair keyValuePair : levelPairs) {
newMap.put(getLevel(keyValuePair.getKey()),
getLevel(keyValuePair.getValue()));
}
return new LoggerNameLevelRewritePolicy(loggerName, newMap);
}
private static Level getLevel(String name) {
return Level.getLevel(name.toUpperCase(Locale.ROOT));
}
private final String loggerName;
private final Map<Level, Level> map;
private LoggerNameLevelRewritePolicy(String loggerName, Map<Level, Level>
map) {
super();
this.loggerName = loggerName;
this.map = map;
}
@Override
public LogEvent rewrite(LogEvent event) {
if (!event.getLoggerName().startsWith(loggerName)) {
return event;
}
final Level sourceLevel = event.getLevel();
final Level newLevel = map.get(sourceLevel);
LogEvent result = new Log4jLogEvent(event.getLoggerName(),
event.getMarker(), event.getLoggerFqcn(),
newLevel == null ? sourceLevel : newLevel, event.getMessage(),
event.getThrown(),
event.getContextMap(), event.getContextStack(),
event.getThreadName(), event.getSource(),
event.getTimeMillis());
return result;
}
}
{code}
was (Author: garydgregory):
How about this (not tested but it compiles ;-):
{code:java}
package org.apache.logging.log4j.core.appender.rewrite;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.core.impl.Log4jLogEvent;
import org.apache.logging.log4j.core.util.KeyValuePair;
@Plugin(name = "LevelRewritePolicy", category = "Core", elementType =
"rewritePolicy", printObject = true)
public class LoggerNameLevelRewritePolicy implements RewritePolicy {
@PluginFactory
public static LoggerNameLevelRewritePolicy createPolicy(
// @formatter:off
@PluginAttribute("logger") final String loggerName,
@PluginElement("LevelPair") final KeyValuePair[] levelPairs) {
// @formatter:on
Map<Level, Level> newMap = new HashMap<>(levelPairs.length);
for (KeyValuePair keyValuePair : levelPairs) {
newMap.put(getLevel(keyValuePair.getKey()),
getLevel(keyValuePair.getValue()));
}
return new LoggerNameLevelRewritePolicy(loggerName, newMap);
}
private static Level getLevel(String name) {
return Level.getLevel(name.toUpperCase(Locale.ROOT));
}
private final String loggerName;
private final Map<Level, Level> map;
private LoggerNameLevelRewritePolicy(String loggerName, Map<Level, Level>
map) {
super();
this.loggerName = loggerName;
this.map = map;
}
@Override
public LogEvent rewrite(LogEvent event) {
if (!event.getLoggerName().startsWith(loggerName)) {
return event;
}
final Level sourceLevel = event.getLevel();
final Level newLevel = map.get(sourceLevel);
LogEvent result = new Log4jLogEvent(event.getLoggerName(),
event.getMarker(), event.getLoggerFqcn(),
newLevel == null ? sourceLevel : newLevel, event.getMessage(),
event.getThrown(),
event.getContextMap(), event.getContextStack(),
event.getThreadName(), event.getSource(),
event.getTimeMillis());
return result;
}
}
{code}
> New RewritePolicy for changing level of a log event
> ---------------------------------------------------
>
> Key: LOG4J2-1023
> URL: https://issues.apache.org/jira/browse/LOG4J2-1023
> Project: Log4j 2
> Issue Type: New Feature
> Components: Core
> Affects Versions: 2.3
> Reporter: Mikael Ståldal
> Labels: configuration
>
> It would be useful to have a RewritePolicy for changing the level of a log
> event.
> Some 3rd party libraries log stuff on wrong level, and I would like to be
> able to translate it.
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