| /* |
| * 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.nutch.util; |
| |
| import java.time.Instant; |
| import java.time.LocalDateTime; |
| import java.time.ZoneId; |
| import java.time.format.DateTimeFormatter; |
| import java.util.concurrent.TimeUnit; |
| |
| public class TimingUtil { |
| |
| /** Formats dates for logging */ |
| public static DateTimeFormatter logDateFormat = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); |
| |
| /** |
| * Convert epoch milliseconds ({@link System#currentTimeMillis()}) into date |
| * string (local time zone) used for logging |
| */ |
| public static String logDateMillis(long millis) { |
| return logDateFormat.format( |
| LocalDateTime.ofInstant(Instant.ofEpochMilli(millis), ZoneId.systemDefault())); |
| } |
| |
| /** |
| * Calculate the elapsed time between two times specified in milliseconds. |
| * |
| * @param start |
| * The start of the time period |
| * @param end |
| * The end of the time period |
| * @return a string of the form "XhYmZs" when the elapsed time is X hours, Y |
| * minutes and Z seconds or null if start > end. |
| */ |
| public static String elapsedTime(long start, long end) { |
| if (start > end) { |
| return null; |
| } |
| return secondsToHMS((end-start)/1000); |
| } |
| |
| /** |
| * Show time in seconds as hours, minutes and seconds (hh:mm:ss) |
| * |
| * @param seconds |
| * (elapsed) time in seconds |
| * @return human readable time string "hh:mm:ss" |
| */ |
| public static String secondsToHMS(long seconds) { |
| long hours = TimeUnit.SECONDS.toHours(seconds); |
| long minutes = TimeUnit.SECONDS.toMinutes(seconds) |
| % TimeUnit.HOURS.toMinutes(1); |
| seconds = TimeUnit.SECONDS.toSeconds(seconds) |
| % TimeUnit.MINUTES.toSeconds(1); |
| return String.format("%02d:%02d:%02d", hours, minutes, seconds); |
| } |
| |
| /** |
| * Show time in seconds as days, hours, minutes and seconds (d days, hh:mm:ss) |
| * |
| * @param seconds |
| * (elapsed) time in seconds |
| * @return human readable time string "d days, hh:mm:ss" |
| */ |
| public static String secondsToDaysHMS(long seconds) { |
| long days = TimeUnit.SECONDS.toDays(seconds); |
| if (days == 0) |
| return secondsToHMS(seconds); |
| String hhmmss = secondsToHMS(seconds % TimeUnit.DAYS.toSeconds(1)); |
| return String.format("%d days, %s", days, hhmmss); |
| } |
| |
| } |