| /** |
| * 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.hadoop.yarn.util; |
| |
| import java.text.ParseException; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| |
| @Private |
| public class Times { |
| private static final Log LOG = LogFactory.getLog(Times.class); |
| |
| static final String ISO8601DATEFORMAT = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"; |
| |
| // This format should match the one used in yarn.dt.plugins.js |
| static final ThreadLocal<SimpleDateFormat> dateFormat = |
| new ThreadLocal<SimpleDateFormat>() { |
| @Override protected SimpleDateFormat initialValue() { |
| return new SimpleDateFormat("EEE MMM dd HH:mm:ss Z yyyy"); |
| } |
| }; |
| |
| static final ThreadLocal<SimpleDateFormat> isoFormat = |
| new ThreadLocal<SimpleDateFormat>() { |
| @Override |
| protected SimpleDateFormat initialValue() { |
| return new SimpleDateFormat(ISO8601DATEFORMAT); |
| } |
| }; |
| |
| public static long elapsed(long started, long finished) { |
| return Times.elapsed(started, finished, true); |
| } |
| |
| // A valid elapsed is supposed to be non-negative. If finished/current time |
| // is ahead of the started time, return -1 to indicate invalid elapsed time, |
| // and record a warning log. |
| public static long elapsed(long started, long finished, boolean isRunning) { |
| if (finished > 0 && started > 0) { |
| long elapsed = finished - started; |
| if (elapsed >= 0) { |
| return elapsed; |
| } else { |
| LOG.warn("Finished time " + finished |
| + " is ahead of started time " + started); |
| return -1; |
| } |
| } |
| if (isRunning) { |
| long current = System.currentTimeMillis(); |
| long elapsed = started > 0 ? current - started : 0; |
| if (elapsed >= 0) { |
| return elapsed; |
| } else { |
| LOG.warn("Current time " + current |
| + " is ahead of started time " + started); |
| return -1; |
| } |
| } else { |
| return -1; |
| } |
| } |
| |
| public static String format(long ts) { |
| return ts > 0 ? String.valueOf(dateFormat.get().format(new Date(ts))) |
| : "N/A"; |
| } |
| |
| /** |
| * Given a time stamp returns ISO-8601 formated string in format |
| * "yyyy-MM-dd'T'HH:mm:ss.SSSZ". |
| * @param ts to be formatted in ISO format. |
| * @return ISO 8601 formatted string. |
| */ |
| public static String formatISO8601(long ts) { |
| return isoFormat.get().format(new Date(ts)); |
| } |
| |
| /** |
| * Given ISO formatted string with format "yyyy-MM-dd'T'HH:mm:ss.SSSZ", return |
| * epoch time for local Time zone. |
| * @param isoString in format of "yyyy-MM-dd'T'HH:mm:ss.SSSZ". |
| * @return epoch time for local time zone. |
| * @throws ParseException if given ISO formatted string can not be parsed. |
| */ |
| public static long parseISO8601ToLocalTimeInMillis(String isoString) |
| throws ParseException { |
| if (isoString == null) { |
| throw new ParseException("Invalid input.", -1); |
| } |
| return isoFormat.get().parse(isoString).getTime(); |
| } |
| } |