001/** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.camel.util; 018 019/** 020 * Unit utils. 021 */ 022public final class UnitUtils { 023 024 private UnitUtils() { 025 } 026 027 /** 028 * If having a size in bytes and wanting to print this in human friendly\ 029 * format with xx kB, xx MB, xx GB instead of a large byte number. 030 * 031 * @param bytes the value in bytes 032 */ 033 public static String printUnitFromBytes(long bytes) { 034 // http://stackoverflow.com/questions/3758606/how-to-convert-byte-size-into-human-readable-format-in-java 035 int unit = 1000; 036 if (bytes < unit) { 037 return bytes + " B"; 038 } 039 int exp = (int) (Math.log(bytes) / Math.log(unit)); 040 String pre = "" + "kMGTPE".charAt(exp - 1); 041 return String.format("%.1f %sB", bytes / Math.pow(unit, exp), pre); 042 } 043}