80 lines
2.7 KiB
Java
80 lines
2.7 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 org.apache.catalina.util;
|
|
|
|
import java.text.SimpleDateFormat;
|
|
import java.util.Date;
|
|
import java.util.Locale;
|
|
import java.util.Queue;
|
|
import java.util.TimeZone;
|
|
import java.util.concurrent.ConcurrentLinkedQueue;
|
|
|
|
/**
|
|
* A thread safe wrapper around {@link SimpleDateFormat} that does not make use
|
|
* of ThreadLocal and - broadly - only creates enough SimpleDateFormat objects
|
|
* to satisfy the concurrency requirements.
|
|
*
|
|
* @deprecated Unused. This will be removed in Tomcat 10.
|
|
* Use {@link org.apache.tomcat.util.http.ConcurrentDateFormat}
|
|
*/
|
|
@Deprecated
|
|
public class ConcurrentDateFormat {
|
|
|
|
private final String format;
|
|
private final Locale locale;
|
|
private final TimeZone timezone;
|
|
private final Queue<SimpleDateFormat> queue = new ConcurrentLinkedQueue<>();
|
|
|
|
public static final String RFC1123_DATE = "EEE, dd MMM yyyy HH:mm:ss zzz";
|
|
public static final TimeZone GMT = TimeZone.getTimeZone("GMT");
|
|
|
|
private static final ConcurrentDateFormat FORMAT_RFC1123;
|
|
|
|
static {
|
|
FORMAT_RFC1123 = new ConcurrentDateFormat(RFC1123_DATE, Locale.US, GMT);
|
|
}
|
|
|
|
public static String formatRfc1123(Date date) {
|
|
return FORMAT_RFC1123.format(date);
|
|
}
|
|
|
|
public ConcurrentDateFormat(String format, Locale locale,
|
|
TimeZone timezone) {
|
|
this.format = format;
|
|
this.locale = locale;
|
|
this.timezone = timezone;
|
|
SimpleDateFormat initial = createInstance();
|
|
queue.add(initial);
|
|
}
|
|
|
|
public String format(Date date) {
|
|
SimpleDateFormat sdf = queue.poll();
|
|
if (sdf == null) {
|
|
sdf = createInstance();
|
|
}
|
|
String result = sdf.format(date);
|
|
queue.add(sdf);
|
|
return result;
|
|
}
|
|
|
|
private SimpleDateFormat createInstance() {
|
|
SimpleDateFormat sdf = new SimpleDateFormat(format, locale);
|
|
sdf.setTimeZone(timezone);
|
|
return sdf;
|
|
}
|
|
}
|