| /* |
| * 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.lookup; |
| |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.core.config.plugins.Plugin; |
| import org.apache.logging.log4j.status.StatusLogger; |
| |
| import java.text.DateFormat; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| |
| /** |
| * Formats the current date or the date in the LogEvent. The "key" is used as the format String. |
| */ |
| @Plugin(name = "date", type = "Lookup") |
| public class DateLookup implements StrLookup { |
| |
| private static final Logger LOGGER = StatusLogger.getLogger(); |
| /** |
| * Get the value of the environment variable. |
| * @param key the format to use. If null, the default DateFormat will be used. |
| * @return The value of the environment variable. |
| */ |
| public String lookup(String key) { |
| return formatDate(System.currentTimeMillis(), key); |
| } |
| |
| /** |
| * Get the value of the environment variable. |
| * @param event The current LogEvent (is ignored by this StrLookup). |
| * @param key the format to use. If null, the default DateFormat will be used. |
| * @return The value of the environment variable. |
| */ |
| public String lookup(LogEvent event, String key) { |
| return formatDate(event.getMillis(), key); |
| } |
| |
| private String formatDate(long date, String format) { |
| DateFormat dateFormat = null; |
| if (format != null) { |
| try { |
| dateFormat = new SimpleDateFormat(format); |
| } catch (Exception ex) { |
| LOGGER.error("Invalid date format: \"" + format + "\", using default", ex); |
| } |
| } |
| if (dateFormat == null) { |
| dateFormat = DateFormat.getInstance(); |
| } |
| return dateFormat.format(new Date(date)); |
| } |
| } |