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.core.joran.spi; 015 016import ch.qos.logback.core.spi.ContextAwareBase; 017 018import java.io.File; 019import java.net.URL; 020import java.net.URLDecoder; 021import java.util.ArrayList; 022import java.util.List; 023 024/** 025 * @author Ceki Gülcü 026 */ 027public class ConfigurationWatchList extends ContextAwareBase { 028 029 URL mainURL; 030 List<File> fileWatchList = new ArrayList<File>(); 031 List<Long> lastModifiedList = new ArrayList<Long>(); 032 033 public ConfigurationWatchList buildClone() { 034 ConfigurationWatchList out = new ConfigurationWatchList(); 035 out.mainURL = this.mainURL; 036 out.fileWatchList = new ArrayList<File>(this.fileWatchList); 037 out.lastModifiedList = new ArrayList<Long>(this.lastModifiedList); 038 return out; 039 } 040 041 public void clear() { 042 this.mainURL = null; 043 lastModifiedList.clear(); 044 fileWatchList.clear(); 045 } 046 047 /** 048 * The mainURL for the configuration file. Null values are allowed. 049 * 050 * @param mainURL 051 */ 052 public void setMainURL(URL mainURL) { 053 // main url can be null 054 this.mainURL = mainURL; 055 if (mainURL != null) 056 addAsFileToWatch(mainURL); 057 } 058 059 private void addAsFileToWatch(URL url) { 060 File file = convertToFile(url); 061 if (file != null) { 062 fileWatchList.add(file); 063 lastModifiedList.add(file.lastModified()); 064 } 065 } 066 067 public void addToWatchList(URL url) { 068 addAsFileToWatch(url); 069 } 070 071 public URL getMainURL() { 072 return mainURL; 073 } 074 075 public List<File> getCopyOfFileWatchList() { 076 return new ArrayList<File>(fileWatchList); 077 } 078 079 public boolean changeDetected() { 080 int len = fileWatchList.size(); 081 for (int i = 0; i < len; i++) { 082 long lastModified = lastModifiedList.get(i); 083 File file = fileWatchList.get(i); 084 if (lastModified != file.lastModified()) { 085 return true; 086 } 087 } 088 return false; 089 // return (lastModified != fileToScan.lastModified() && lastModified != 090 // SENTINEL); 091 } 092 093 @SuppressWarnings("deprecation") 094 File convertToFile(URL url) { 095 String protocol = url.getProtocol(); 096 if ("file".equals(protocol)) { 097 return new File(URLDecoder.decode(url.getFile())); 098 } else { 099 addInfo("URL [" + url + "] is not of type file"); 100 return null; 101 } 102 } 103 104}