001/** 002 * Logback: the reliable, generic, fast and flexible logging framework. 003 * Copyright (C) 1999-2015, QOS.ch. All rights reserved. 004 * 005 * This program and the accompanying materials are dual-licensed under 006 * either the terms of the Eclipse Public License v1.0 as published by 007 * the Eclipse Foundation 008 * 009 * or (per the licensee's choosing) 010 * 011 * under the terms of the GNU Lesser General Public License version 2.1 012 * as published by the Free Software Foundation. 013 */ 014package ch.qos.logback.classic.pattern; 015 016import java.time.ZoneId; 017import java.util.List; 018 019import ch.qos.logback.classic.spi.ILoggingEvent; 020import ch.qos.logback.core.CoreConstants; 021import ch.qos.logback.core.util.CachingDateFormatter; 022 023public class DateConverter extends ClassicConverter { 024 025 long lastTimestamp = -1; 026 String timestampStrCache = null; 027 CachingDateFormatter cachingDateFormatter = null; 028 029 public void start() { 030 031 String datePattern = getFirstOption(); 032 if (datePattern == null) { 033 datePattern = CoreConstants.ISO8601_PATTERN; 034 } 035 036 if (datePattern.equals(CoreConstants.ISO8601_STR)) { 037 datePattern = CoreConstants.ISO8601_PATTERN; 038 } 039 040 List<String> optionList = getOptionList(); 041 ZoneId zoneId = null; 042 // if the option list contains a TZ option, then set it. 043 if (optionList != null && optionList.size() > 1) { 044 String zoneIdString = (String) optionList.get(1); 045 zoneId = ZoneId.of(zoneIdString); 046 } 047 048 try { 049 cachingDateFormatter = new CachingDateFormatter(datePattern, zoneId); 050 } catch (IllegalArgumentException e) { 051 addWarn("Could not instantiate SimpleDateFormat with pattern " + datePattern, e); 052 // default to the ISO8601 format 053 cachingDateFormatter = new CachingDateFormatter(CoreConstants.ISO8601_PATTERN, zoneId); 054 } 055 056 super.start(); 057 } 058 059 public String convert(ILoggingEvent le) { 060 long timestamp = le.getTimeStamp(); 061 return cachingDateFormatter.format(timestamp); 062 } 063}