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various checks like the blacklist check or the robots.txt disallow check are now done by a separate thread to unburden the indexer thread(s) TODO: maybe we have to introduce a threadpool here if it turn out that this single thread is a bottleneck because of the time consuming robots.txt downloads *) improved index transfer The index selection and transmission is done in parallel now to improve index transfer performance. TODO: maybe we could speed up performance by unsing multiple transmission threads in parallel instead of only a single one. *) gzip encoded post requests it is now configureable if a gzip encoded post request should be send on intex transfer/distribution *) storage Peer (very experimentell and not optimized yet) Now it's possible to send the result of the yacy indexer thread to a remote peer istead of storing the indexed words locally. This could be done by setting the property "storagePeerHash" in the yacy config file - Please note that if the index transfer fails, the index ist stored locally. - TODO: currently this index transfer is done by the indexer thread. To seedup the indexer a) this transmission should be done in parallel and b) multiple chunks should be bundled and transfered together *) general performance improvements - better memory cleanup after http request processing has finished - replacing some string concatenations with stringBuffers - replacing BufferedInputStreams with serverByteBuffer - replacing vectors with arraylists wherever possible - replacing hashtables with hashmaps wherever possible This was done because function calls to verctor or hashtable functions take 3 time longer than calls to functions of arraylists or hashmaps. TODO: we should take a look on the class serverObject which is inherited from hashmap Do we realy need a synchronization for this class? TODO: replace arraylists with linkedLists if random access to the list elements is not needed *) Robots Parser supports if-modified-since downloads now If the downloaded robots.txt file is older than 7 days the robots parser tries to download the robots.txt with the if-modified-since header to avoid unnecessary downloads if the file was not changed. Additionally the ETag header is used to detect changes. *) Crawler: better handling of unsupported mimeTypes + FileExtension *) Bugfix: plasmaWordIndexEntity was not closed correctly in - query.java - plasmaswitchboard.java *) function minimizeUrlDB added to yacy.java this function tests the current urlHashDB for unused urls ATTENTION: please don't use this function at the moment because it causes the wordIndexDB to flush all words into the word directory! git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@853 6c8d7289-2bf4-0310-a012-ef5d649a1542
201 lines
7.3 KiB
Java
201 lines
7.3 KiB
Java
// translator.java
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// -------------------------------------
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// part of YACY
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// This file ist contributed by Alexander Schier
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// last major change: 25.05.2005
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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package de.anomic.data;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Iterator;
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import java.util.Vector;
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import de.anomic.server.logging.serverLog;
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import de.anomic.data.listManager;
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/**
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* Wordlist based translator
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*
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* Uses a Property like file with phrases or single words to translate a string or a file
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* */
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public class translator {
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public static String translate(String source, Hashtable translationList){
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Enumeration keys = translationList.keys();
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String result = source;
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String key = "";
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while(keys.hasMoreElements()){
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key = (String)keys.nextElement();
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result = result.replaceAll(key, (String)translationList.get(key));
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//System.out.println("Replaced \""+key+"\" by \""+translationList.getProperty(key)+"\""); //DEBUG
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}
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return result;
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}
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public static Hashtable loadTranslationsLists(File translationFile){
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Hashtable lists = new Hashtable(); //list of translationLists for different files.
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Hashtable translationList = new Hashtable(); //current Translation Table
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FileInputStream fileIn = null;
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ArrayList list = listManager.getListArray(translationFile);
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Iterator it = list.iterator();
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String line = "";
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String value = "";
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String[] splitted;
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String forFile="";
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while(it.hasNext()){
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line = (String)it.next();
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if(! line.startsWith("#")){
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splitted = line.split("==");
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if(splitted.length == 2){
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translationList.put(splitted[0], splitted[1]);
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}else if(splitted.length > 2){
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value = "";
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for(int i = splitted.length-1;i>=1;i--){
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value += splitted[i];
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}
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translationList.put(splitted[0], value);
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}else{ //Invalid line
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}
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}else if(line.startsWith("#File: ")){
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if(forFile != ""){
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lists.put(forFile, translationList);
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}
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if(line.charAt(6)==' '){
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forFile=line.substring(7);
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}else{
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forFile=line.substring(6);
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}
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translationList=new Hashtable();
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}
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}
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lists.put(forFile, translationList);
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return lists;
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}
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public static boolean translateFile(File sourceFile, File destFile, File translationFile){
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Hashtable translationList = (Hashtable)loadTranslationsLists(translationFile).get(sourceFile.getName());
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return translateFile(sourceFile, destFile, translationList);
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}
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public static boolean translateFile(File sourceFile, File destFile, Hashtable translationList){
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String content = "";
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String line = "";
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BufferedReader br = null;
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try{
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br = new BufferedReader(new InputStreamReader(new FileInputStream(sourceFile)));
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while( (line = br.readLine()) != null){
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content += line + de.anomic.server.serverCore.crlfString;
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}
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br.close();
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}catch(IOException e){
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return false;
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} finally {
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if (br!=null)try{br.close();}catch(Exception e){}
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}
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content = translate(content, translationList);
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BufferedWriter bw = null;
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try{
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bw = new BufferedWriter(new FileWriter(destFile));
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bw.write(content);
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bw.close();
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}catch(IOException e){
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return false;
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} finally {
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if(bw!=null)try{bw.close();}catch(Exception e){}
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}
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return true;
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}
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public static boolean translateFiles(File sourceDir, File destDir, File translationFile, String extension){
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Hashtable translationLists = loadTranslationsLists(translationFile);
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return translateFiles(sourceDir, destDir, translationLists, extension);
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}
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public static boolean translateFiles(File sourceDir, File destDir, Hashtable translationLists, String extension){
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destDir.mkdirs();
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File[] sourceFiles = sourceDir.listFiles();
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for(int i=0;i<sourceFiles.length;i++){
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if(sourceFiles[i].getName().endsWith(extension)){
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if(translationLists.containsKey(sourceFiles[i].getName())){
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if(translateFile(sourceFiles[i], new File(destDir, sourceFiles[i].getName()), (Hashtable)translationLists.get(sourceFiles[i].getName()))){
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serverLog.logInfo("Translator", "Translated file: "+ sourceFiles[i].getName());
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}else{
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serverLog.logSevere("Translator", "File error while translating file "+sourceFiles[i].getPath());
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}
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}else{
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serverLog.logInfo("Translator", "No translation for file: "+sourceFiles[i].getPath());
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}
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}
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}
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return true;
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}
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public static boolean translateFilesRecursive(File sourceDir, File destDir, File translationFile, String extension){
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ArrayList dirList=listManager.getDirsRecursive(sourceDir);
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Iterator it=dirList.iterator();
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String sourceName=sourceDir.getPath();
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String destName=destDir.getPath();
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File dir=null;
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File dir2=null;
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while(it.hasNext()){
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dir=(File)it.next();
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dir2=new File(dir.getPath().replaceFirst(sourceName.replaceAll("\\\\", "\\\\"), destName));
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translateFiles(dir, dir2, translationFile, extension);
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}
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return true;
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}
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}
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