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yacy_search_server/source/yacy.java

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// yacy.java
// -----------------------
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.yacy.net
// Frankfurt, Germany, 2004, 2005
// last major change: 24.03.2005
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.
/*
This is the main class of the proxy.
From here, several threads are started:
- one single instance of the plasmaSwitchboard is generated,
which itself starts a thread with a plasmaHTMLCache object. This object simply counts
files sizes in the cache and terminates then.
It also generates a plasmaCrawlerLoader object, which may itself start
some more httpc-calling threads to load web pages. They terminate automatically when a page has loaded
- one serverCore - thread is started, which implements a multi-threaded server.
The process may start itself many more processes that handle connections.
- finally, all idle-dependent processes are written in a queue in plasmaSwitchboard
which are worked off inside an idle-sensitive loop of the main process. (here)
On termination, the following must be done:
- stop feeding of the crawling process because it othervise fills the indexing queue.
- say goodbye to connected peers and disable new connections. Don't wait for success.
- first terminate the serverCore thread. This prevents that new cache objects are queued
- wait that the plasmaHTMLCache terminates (it should be normal that this process already has terminated)
- then wait for termination of all loader process of the plasmaCrawlerLoader
- work off the indexing and cache storage queue. These values are inside a RAM cache and would be lost othervise
- write all settings
- terminate
*/
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Properties;
import java.util.TreeSet;
import de.anomic.http.httpHeader;
import de.anomic.http.httpc;
import de.anomic.http.httpd;
import de.anomic.http.httpdFileHandler;
import de.anomic.http.httpdProxyHandler;
import de.anomic.kelondro.kelondroMScoreCluster;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.plasmaURL;
import de.anomic.plasma.plasmaWordIndexEntity;
import de.anomic.plasma.plasmaWordIndexEntry;
import de.anomic.server.serverCodings;
import de.anomic.server.serverCore;
import de.anomic.server.serverFileUtils;
import de.anomic.server.serverLog;
import de.anomic.server.serverSystem;
import de.anomic.tools.enumerateFiles;
import de.anomic.yacy.yacyCore;
//import de.anomic.http.*;
public final class yacy {
// static objects
private static final String vString = "@REPL_VERSION@";
private static final String vDATE = "@REPL_DATE@";
private static final String copyright = "[ YACY Proxy v" + vString + ", build " + vDATE + " by Michael Christen / www.yacy.net ]";
private static final String hline = "-------------------------------------------------------------------------------";
private static void startup(String homePath) {
long startup = yacyCore.universalTime();
try {
// start up
System.out.println(copyright);
System.out.println(hline);
// check java version
try {
String[] check = "a,b".split(","); // split needs java 1.4
} catch (NoSuchMethodError e) {
serverLog.logFailure("STARTUP", "Java Version too low. You need at least Java 1.4.2 to run YACY");
Thread.currentThread().sleep(3000);
System.exit(-1);
}
serverLog.logSystem("STARTUP", "java version " + System.getProperty("java.version", "no-java-version"));
serverLog.logSystem("STARTUP", "Application Root Path: " + homePath.toString());
// create data folder
File dataFolder = new File(homePath, "DATA");
if (!(dataFolder.exists())) dataFolder.mkdir();
plasmaSwitchboard sb = new plasmaSwitchboard(homePath, "yacy.init", "DATA/SETTINGS/httpProxy.conf");
sb.setConfig("version", vString);
sb.setConfig("vdate", vDATE);
sb.setConfig("applicationRoot", homePath);
sb.setConfig("startupTime", "" + startup);
serverLog.logSystem("STARTUP", "YACY Version: " + vString + ", Built " + vDATE);
// read environment
//new
int port = Integer.parseInt(sb.getConfig("port", "8080"));
int httpdLoglevel = Integer.parseInt(sb.getConfig("httpdLoglevel", "2"));
int timeout = Integer.parseInt(sb.getConfig("httpdTimeout", "60000"));
if (timeout < 60000) timeout = 60000;
int maxSessions = Integer.parseInt(sb.getConfig("httpdMaxSessions", "100"));
// hardcoded, forced, temporary value-migration
sb.setConfig("htTemplatePath", "htroot/env/templates");
// create some directories
File htRootPath = new File(sb.getRootPath(), sb.getConfig("htRootPath", "htroot"));
File htDocsPath = new File(sb.getRootPath(), sb.getConfig("htDocsPath", "DATA/HTDOCS"));
File htTemplatePath = new File(sb.getRootPath(), sb.getConfig("htTemplatePath","htdocs"));
if (!(htDocsPath.exists())) htDocsPath.mkdir();
File htdocsDefaultReadme = new File(htDocsPath, "readme.txt");
if (!(htdocsDefaultReadme.exists())) try {serverFileUtils.write((
"This is your root directory for individual Web Content\r\n" +
"\r\n" +
"Please place your html files into the www subdirectory.\r\n" +
"The URL of that path is either\r\n" +
"http://www.<your-peer-name>.yacy or\r\n" +
"http://<your-ip>:<your-port>/www\r\n" +
"\r\n" +
"Other subdirectories may be created; they map to corresponding sub-domains.\r\n" +
"This directory shares it's content with the applications htroot path, so you\r\n" +
"may access your yacy search page with\r\n" +
"http://<your-peer-name>.yacy/\r\n" +
"\r\n").getBytes(), htdocsDefaultReadme);} catch (IOException e) {
System.out.println("Error creating htdocs readme: " + e.getMessage());
}
File wwwDefaultPath = new File(htDocsPath, "www");
if (!(wwwDefaultPath.exists())) wwwDefaultPath.mkdir();
File wwwDefaultClass = new File(wwwDefaultPath, "welcome.class");
//if ((!(wwwDefaultClass.exists())) || (wwwDefaultClass.length() != (new File(htRootPath, "htdocsdefault/welcome.class")).length())) try {
if((new File(htRootPath, "htdocsdefault/welcome.java")).exists())
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/welcome.java"), new File(wwwDefaultPath, "welcome.java"));
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/welcome.class"), wwwDefaultClass);
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/welcome.html"), new File(wwwDefaultPath, "welcome.html"));
//} catch (IOException e) {}
File shareDefaultPath = new File(htDocsPath, "share");
if (!(shareDefaultPath.exists())) shareDefaultPath.mkdir();
File shareDefaultClass = new File(shareDefaultPath, "dir.class");
//if ((!(shareDefaultClass.exists())) || (shareDefaultClass.length() != (new File(htRootPath, "htdocsdefault/dir.class")).length())) try {
if((new File(htRootPath, "htdocsdefault/dir.java")).exists())
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/dir.java"), new File(shareDefaultPath, "dir.java"));
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/dir.class"), shareDefaultClass);
serverFileUtils.copy(new File(htRootPath, "htdocsdefault/dir.html"), new File(shareDefaultPath, "dir.html"));
//} catch (IOException e) {}
// set preset accounts/passwords
String acc;
if ((acc = sb.getConfig("proxyAccount", "")).length() > 0) {
sb.setConfig("proxyAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(serverCodings.standardCoder.encodeBase64String(acc)));
sb.setConfig("proxyAccount", "");
}
if ((acc = sb.getConfig("serverAccount", "")).length() > 0) {
sb.setConfig("serverAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(serverCodings.standardCoder.encodeBase64String(acc)));
sb.setConfig("serverAccount", "");
}
if ((acc = sb.getConfig("adminAccount", "")).length() > 0) {
sb.setConfig("adminAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(serverCodings.standardCoder.encodeBase64String(acc)));
sb.setConfig("adminAccount", "");
}
// fix unsafe old passwords
if ((acc = sb.getConfig("proxyAccountBase64", "")).length() > 0) {
sb.setConfig("proxyAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(acc));
sb.setConfig("proxyAccountBase64", "");
}
if ((acc = sb.getConfig("serverAccountBase64", "")).length() > 0) {
sb.setConfig("serverAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(acc));
sb.setConfig("serverAccountBase64", "");
}
if ((acc = sb.getConfig("adminAccountBase64", "")).length() > 0) {
sb.setConfig("adminAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(acc));
sb.setConfig("adminAccountBase64", "");
}
if ((acc = sb.getConfig("uploadAccountBase64", "")).length() > 0) {
sb.setConfig("uploadAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(acc));
sb.setConfig("uploadAccountBase64", "");
}
if ((acc = sb.getConfig("downloadAccountBase64", "")).length() > 0) {
sb.setConfig("downloadAccountBase64MD5", serverCodings.standardCoder.encodeMD5Hex(acc));
sb.setConfig("downloadAccountBase64", "");
}
// init parser
de.anomic.plasma.plasmaParser.initMediaExt(sb.getConfig("mediaExt",""));
// start main threads
try {
httpd protocolHandler = new httpd(sb, new httpdFileHandler(sb), new httpdProxyHandler(sb));
serverCore server = new serverCore(port,
maxSessions /*sessions*/,
timeout /*control socket timeout in milliseconds*/,
true /* terminate sleeping threads */,
true /* block attacks (wrong protocol) */,
protocolHandler /*command class*/,
sb,
30000 /*command max length incl. GET args*/,
httpdLoglevel /*loglevel*/);
server.setName("httpd:"+port);
if (server == null) {
serverLog.logFailure("STARTUP", "Failed to start server. Probably port " + port + " already in use.");
} else {
// first start the server
sb.deployThread("10_httpd", "HTTPD Server/Proxy", "the HTTPD, used as web server and proxy", server, null, 0, 0, 0);
//server.start();
// open the browser window
boolean browserPopUpTrigger = sb.getConfig("browserPopUpTrigger", "true").equals("true");
if (browserPopUpTrigger) {
String browserPopUpPage = sb.getConfig("browserPopUpPage", "Status.html");
String browserPopUpApplication = sb.getConfig("browserPopUpApplication", "netscape");
serverSystem.openBrowser("http://localhost:" + port + "/" + browserPopUpPage, browserPopUpApplication);
}
// wait for server shutdown
try {
sb.waitForShutdown();
} catch (Exception e) {
serverLog.logError("MAIN CONTROL LOOP", "PANIK: " + e.getMessage());
e.printStackTrace();
}
// shut down
serverLog.logSystem("SHUTDOWN", "catched termination signal");
server.terminate(false);
server.interrupt();
if (server.isAlive()) try {
httpc.wget(new URL("http://localhost:" + port), 1000, null, null, null, 0); // kick server
serverLog.logSystem("SHUTDOWN", "sent termination signal to server socket");
} catch (IOException ee) {
serverLog.logSystem("SHUTDOWN", "termination signal to server socket missed (server shutdown, ok)");
}
// idle until the processes are down
while (server.isAlive()) {
Thread.currentThread().sleep(2000); // wait a while
}
serverLog.logSystem("SHUTDOWN", "server has terminated");
sb.close();
}
} catch (Exception e) {
serverLog.logError("STARTUP", "" + e);
e.printStackTrace();
//System.exit(1);
}
} catch (Exception ee) {
serverLog.logFailure("STARTUP", "FATAL ERROR: " + ee.getMessage());
ee.printStackTrace();
}
serverLog.logSystem("SHUTDOWN", "goodbye. (this is the last line)");
try {System.exit(0);} catch (Exception e) {} // was once stopped by de.anomic.net.ftpc$sm.checkExit(ftpc.java:1790)
}
private static Properties configuration(String mes, String homePath) {
serverLog.logSystem(mes, "Application Root Path: " + homePath.toString());
// read data folder
File dataFolder = new File(homePath, "DATA");
if (!(dataFolder.exists())) {
serverLog.logError(mes, "Application was never started or root path wrong.");
System.exit(-1);
}
Properties config = new Properties();
try {
config.load(new FileInputStream(new File(homePath, "DATA/SETTINGS/httpProxy.conf")));
} catch (FileNotFoundException e) {
serverLog.logError(mes, "could not find configuration file.");
System.exit(-1);
} catch (IOException e) {
serverLog.logError(mes, "could not read configuration file.");
System.exit(-1);
}
return config;
}
private static void shutdown(String homePath) {
// start up
System.out.println(copyright);
System.out.println(hline);
Properties config = configuration("REMOTE-SHUTDOWN", homePath);
// read port
int port = Integer.parseInt((String) config.get("port"));
// read password
String encodedPassword = (String) config.get("adminAccountBase64MD5");
if (encodedPassword == null) encodedPassword = ""; // not defined
// send 'wget' to web interface
httpHeader requestHeader = new httpHeader();
requestHeader.put("Authorization", "realm=" + encodedPassword); // for http-authentify
try {
httpc con = httpc.getInstance("localhost", port, 10000, false);
httpc.response res = con.GET("Steering.html?shutdown=", requestHeader);
// read response
if (res.status.startsWith("2")) {
serverLog.logSystem("REMOTE-SHUTDOWN", "YACY accepted shutdown command.");
serverLog.logSystem("REMOTE-SHUTDOWN", "Stand by for termination, which may last some seconds.");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
res.writeContent(bos, null);
con.close();
} else {
serverLog.logError("REMOTE-SHUTDOWN", "error response from YACY socket: " + res.status);
System.exit(-1);
}
} catch (IOException e) {
serverLog.logError("REMOTE-SHUTDOWN", "could not establish connection to YACY socket: " + e.getMessage());
System.exit(-1);
}
// finished
serverLog.logSystem("REMOTE-SHUTDOWN", "SUCCESSFULLY FINISHED remote-shutdown:");
serverLog.logSystem("REMOTE-SHUTDOWN", "YACY will terminate after working off all enqueued tasks.");
}
private static void genWordstat(String homePath) {
// start up
System.out.println(copyright);
System.out.println(hline);
Properties config = configuration("GEN-WORDSTAT", homePath);
// load words
serverLog.logInfo("GEN-WORDSTAT", "loading words...");
HashMap words = loadWordMap(new File(homePath, "yacy.words"));
// find all hashes
serverLog.logInfo("GEN-WORDSTAT", "searching all word-hash databases...");
File dbRoot = new File(homePath, config.getProperty("dbPath"));
enumerateFiles ef = new enumerateFiles(new File(dbRoot, "WORDS"), true, false, true);
File f;
String h;
kelondroMScoreCluster hs = new kelondroMScoreCluster();
while (ef.hasMoreElements()) {
f = (File) ef.nextElement();
h = f.getName().substring(0, plasmaURL.urlHashLength);
hs.addScore(h, (int) f.length());
}
// list the hashes in reverse order
serverLog.logInfo("GEN-WORDSTAT", "listing words in reverse size order...");
String w;
Iterator i = hs.scores(false);
while (i.hasNext()) {
h = (String) i.next();
w = (String) words.get(h);
if (w == null) System.out.print("# " + h); else System.out.print(w);
System.out.println(" - " + hs.getScore(h));
}
// finished
serverLog.logSystem("GEN-WORDSTAT", "FINISHED");
}
private static HashMap loadWordMap(File wordlist) {
// returns a hash-word - Relation
HashMap wordmap = new HashMap();
try {
String word;
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(wordlist)));
while ((word = br.readLine()) != null) wordmap.put(plasmaWordIndexEntry.word2hash(word),word);
br.close();
} catch (IOException e) {}
return wordmap;
}
private static HashSet loadWordSet(File wordlist) {
// returns a set of words
HashSet wordset = new HashSet();
try {
String word;
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(wordlist)));
while ((word = br.readLine()) != null) wordset.add(word);
br.close();
} catch (IOException e) {}
return wordset;
}
private static void cleanwordlist(String wordlist, int minlength, int maxlength) {
// start up
System.out.println(copyright);
System.out.println(hline);
serverLog.logSystem("CLEAN-WORDLIST", "START");
String word;
TreeSet wordset = new TreeSet();
int count = 0;
try {
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(wordlist)));
String seps = "' .,:/-&";
while ((word = br.readLine()) != null) {
word = word.toLowerCase().trim();
for (int i = 0; i < seps.length(); i++) {
if (word.indexOf(seps.charAt(i)) >= 0) word = word.substring(0, word.indexOf(seps.charAt(i)));
}
if ((word.length() >= minlength) && (word.length() <= maxlength)) wordset.add(word);
count++;
}
br.close();
if (wordset.size() != count) {
count = count - wordset.size();
BufferedWriter bw = new BufferedWriter(new PrintWriter(new FileWriter(wordlist)));
while (wordset.size() > 0) {
word = (String) wordset.first();
bw.write(word + "\n");
wordset.remove(word);
}
bw.close();
serverLog.logInfo("CLEAN-WORDLIST", "shrinked wordlist by " + count + " words.");
} else {
serverLog.logInfo("CLEAN-WORDLIST", "not necessary to change wordlist");
}
} catch (IOException e) {
serverLog.logError("CLEAN-WORDLIST", "ERROR: " + e.getMessage());
System.exit(-1);
}
// finished
serverLog.logSystem("CLEAN-WORDLIST", "FINISHED");
}
private static void deleteStopwords(String homePath) {
// start up
System.out.println(copyright);
System.out.println(hline);
serverLog.logSystem("DELETE-STOPWORDS", "START");
Properties config = configuration("DELETE-STOPWORDS", homePath);
File dbRoot = new File(homePath, config.getProperty("dbPath"));
// load stopwords
HashSet stopwords = loadWordSet(new File(homePath, "yacy.stopwords"));
serverLog.logInfo("DELETE-STOPWORDS", "loaded stopwords, " + stopwords.size() + " entries in list, starting scanning");
// find all hashes
File f;
String w;
int count = 0;
long thisamount, totalamount = 0;
Iterator i = stopwords.iterator();
while (i.hasNext()) {
w = (String) i.next();
f = plasmaWordIndexEntity.wordHash2path(dbRoot, plasmaWordIndexEntry.word2hash(w));
if (f.exists()) {
thisamount = f.length();
if (f.delete()) {
count++;
totalamount += thisamount;
serverLog.logInfo("DELETE-STOPWORDS", "deleted index for word '" + w + "', " + thisamount + " bytes");
}
}
}
serverLog.logInfo("DELETE-STOPWORDS", "TOTALS: deleted " + count + " indexes; " + (totalamount / 1024) + " kbytes");
// finished
serverLog.logSystem("DELETE-STOPWORDS", "FINISHED");
}
// application wrapper
public static void main(String args[]) {
String applicationRoot = System.getProperty("user.dir");
if ((args.length >= 1) && ((args[0].equals("-startup")) || (args[0].equals("-start")))) {
// normal start-up of yacy
if (args.length == 2) applicationRoot= args[1];
startup(applicationRoot);
} else if ((args.length >= 1) && ((args[0].equals("-shutdown")) || (args[0].equals("-stop")))) {
// normal shutdown of yacy
if (args.length == 2) applicationRoot= args[1];
shutdown(applicationRoot);
} else if ((args.length >= 1) && (args[0].equals("-deletestopwords"))) {
// delete those words in the index that are listed in the stopwords file
if (args.length == 2) applicationRoot= args[1];
deleteStopwords(applicationRoot);
} else if ((args.length >= 1) && (args[0].equals("-genwordstat"))) {
// this can help to create a stop-word list
// to use this, you need a 'yacy.words' file in the root path
// start this with "java -classpath classes yacy -genwordstat [<rootdir>]"
if (args.length == 2) applicationRoot= args[1];
genWordstat(applicationRoot);
} else if ((args.length == 4) && (args[0].equals("-cleanwordlist"))) {
// this can be used to organize and clean a word-list
// start this with "java -classpath classes yacy -cleanwordlist <word-file> <minlength> <maxlength>"
int minlength = Integer.parseInt(args[2]);
int maxlength = Integer.parseInt(args[3]);
cleanwordlist(args[1], minlength, maxlength);
} else {
if (args.length == 1) applicationRoot= args[0];
startup(applicationRoot);
}
}
}
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