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/*
* 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.juli;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.logging.Formatter;
import java.util.logging.LogRecord;
/**
* Provides same information as default log format but on a single line to make
* it easier to grep the logs. The only exception is stacktraces which are
* always preceded by whitespace to make it simple to skip them.
*/
/*
* Date processing based on AccessLogValve.
*/
public class OneLineFormatter extends Formatter {
private static final String LINE_SEP = System.getProperty("line.separator");
private static final String ST_SEP = LINE_SEP + " ";
/* Timestamp format */
private static final String timeFormat = "dd-MMM-yyyy HH:mm:ss";
/**
* The size of our global date format cache
*/
private static final int globalCacheSize = 30;
/**
* The size of our thread local date format cache
*/
private static final int localCacheSize = 5;
/**
* Global date format cache.
*/
private static final DateFormatCache globalDateCache =
new DateFormatCache(globalCacheSize, timeFormat, null);
/**
* Thread local date format cache.
*/
private static final ThreadLocal<DateFormatCache> localDateCache =
new ThreadLocal<DateFormatCache>() {
@Override
protected DateFormatCache initialValue() {
return new DateFormatCache(localCacheSize, timeFormat, globalDateCache);
}
};
@Override
public String format(LogRecord record) {
StringBuilder sb = new StringBuilder();
// Timestamp
addTimestamp(sb, record.getMillis());
// Severity
sb.append(' ');
sb.append(record.getLevel());
// Thread
sb.append(' ');
sb.append('[');
sb.append(Thread.currentThread().getName());
sb.append(']');
// Source
sb.append(' ');
sb.append(record.getSourceClassName());
sb.append('.');
sb.append(record.getSourceMethodName());
// Message
sb.append(' ');
sb.append(formatMessage(record));
// Stack trace
if (record.getThrown() != null) {
sb.append(ST_SEP);
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
record.getThrown().printStackTrace(pw);
pw.close();
sb.append(sw.getBuffer());
}
// New line for next record
sb.append(LINE_SEP);
return sb.toString();
}
protected void addTimestamp(StringBuilder buf, long timestamp) {
buf.append(localDateCache.get().getFormat(timestamp));
long frac = timestamp % 1000;
buf.append('.');
if (frac < 100) {
if (frac < 10) {
buf.append('0');
buf.append('0');
} else {
buf.append('0');
}
}
buf.append(frac);
}
}
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