mirror of
https://github.com/apache/cloudstack.git
synced 2025-10-26 08:42:29 +01:00
73 lines
2.3 KiB
Java
73 lines
2.3 KiB
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 examples;
|
|
|
|
import org.apache.log4j.helpers.FormattingInfo;
|
|
import org.apache.log4j.helpers.PatternConverter;
|
|
import org.apache.log4j.helpers.PatternParser;
|
|
import org.apache.log4j.spi.LoggingEvent;
|
|
|
|
/**
|
|
Example showing how to extend PatternParser to recognize additional
|
|
conversion characters. The examples shows that minimum and maximum
|
|
width and alignment settings apply for "extension" conversion
|
|
characters just as they do for PatternLayout recognized characters.
|
|
|
|
<p>In this case MyPatternParser recognizes %# and outputs the value
|
|
of an internal counter which is also incremented at each call.
|
|
|
|
See <a href=doc-files/MyPatternParser.java><b>source</b></a> code
|
|
for more details.
|
|
|
|
@see org.apache.log4j.examples.MyPatternLayout
|
|
@see org.apache.log4j.helpers.PatternParser
|
|
@see org.apache.log4j.PatternLayout
|
|
|
|
@author Anders Kristensen
|
|
*/
|
|
public class MyPatternParser extends PatternParser {
|
|
|
|
int counter = 0;
|
|
|
|
public
|
|
MyPatternParser(String pattern) {
|
|
super(pattern);
|
|
}
|
|
|
|
public
|
|
void finalizeConverter(char c) {
|
|
if (c == '#') {
|
|
addConverter(new UserDirPatternConverter(formattingInfo));
|
|
currentLiteral.setLength(0);
|
|
} else {
|
|
super.finalizeConverter(c);
|
|
}
|
|
}
|
|
|
|
private class UserDirPatternConverter extends PatternConverter {
|
|
UserDirPatternConverter(FormattingInfo formattingInfo) {
|
|
super(formattingInfo);
|
|
}
|
|
|
|
public
|
|
String convert(LoggingEvent event) {
|
|
return String.valueOf(++counter);
|
|
}
|
|
}
|
|
}
|