mirror of
https://github.com/yacy/yacy_search_server.git
synced 2024-09-22 00:00:59 +02:00
4779f314fe
- snippets are not fetched by browser using ajax, they are now fetched internally - YaCy-internat threads control existence of snippets and sort out bad results - search results are prepared using SSI includes - the search result page is visible right after the search request, the results drop in when they are detected - no more time-out strategy during search processes, results are shifted within queues when they arrive from remote peers - added result page switching! after the first 10 results, the next page can be retrieved - number of remote results is updated online on the result page as they drop in - removed old snippet servelet (which had been also a security leak btw) - media search is broken now, will be redesigned and fixed in another step git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4071 6c8d7289-2bf4-0310-a012-ef5d649a1542
317 lines
15 KiB
Java
317 lines
15 KiB
Java
// yacySearch.java
|
|
// -------------------------------------
|
|
// (C) by Michael Peter Christen; mc@anomic.de
|
|
// first published on http://www.anomic.de
|
|
// Frankfurt, Germany, 2004
|
|
//
|
|
// $LastChangedDate$
|
|
// $LastChangedRevision$
|
|
// $LastChangedBy$
|
|
//
|
|
// 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 notice above. A re-distribution must contain
|
|
// the intact and unchanged copyright notice.
|
|
// Contributions and changes to the program code must be marked as such.
|
|
|
|
package de.anomic.yacy;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Enumeration;
|
|
import java.util.HashMap;
|
|
import java.util.Iterator;
|
|
import java.util.Map;
|
|
import java.util.Set;
|
|
import java.util.TreeMap;
|
|
|
|
import de.anomic.kelondro.kelondroBitfield;
|
|
import de.anomic.kelondro.kelondroMScoreCluster;
|
|
import de.anomic.plasma.plasmaSearchContainer;
|
|
import de.anomic.plasma.plasmaSearchQuery;
|
|
import de.anomic.plasma.plasmaSearchRankingProfile;
|
|
import de.anomic.plasma.plasmaWordIndex;
|
|
import de.anomic.plasma.urlPattern.plasmaURLPattern;
|
|
import de.anomic.server.logging.serverLog;
|
|
|
|
public class yacySearch extends Thread {
|
|
|
|
final private String wordhashes, excludehashes, urlhashes;
|
|
final private boolean global;
|
|
final private int partitions;
|
|
final private plasmaWordIndex wordIndex;
|
|
final private plasmaSearchContainer containerCache;
|
|
final private Map abstractCache;
|
|
final private plasmaURLPattern blacklist;
|
|
final private yacySeed targetPeer;
|
|
private String[] urls;
|
|
private int count, maxDistance;
|
|
final private plasmaSearchRankingProfile rankingProfile;
|
|
final private String prefer, filter;
|
|
final private kelondroBitfield constraint;
|
|
|
|
public yacySearch(String wordhashes, String excludehashes, String urlhashes, String prefer, String filter, int count, int maxDistance,
|
|
boolean global, int partitions, yacySeed targetPeer, plasmaWordIndex wordIndex,
|
|
plasmaSearchContainer containerCache, Map abstractCache,
|
|
plasmaURLPattern blacklist,
|
|
plasmaSearchRankingProfile rankingProfile,
|
|
kelondroBitfield constraint) {
|
|
super("yacySearch_" + targetPeer.getName());
|
|
//System.out.println("DEBUG - yacySearch thread " + this.getName() + " initialized " + ((urlhashes.length() == 0) ? "(primary)" : "(secondary)"));
|
|
this.wordhashes = wordhashes;
|
|
this.excludehashes = excludehashes;
|
|
this.urlhashes = urlhashes;
|
|
this.prefer = prefer;
|
|
this.filter = filter;
|
|
this.global = global;
|
|
this.partitions = partitions;
|
|
this.wordIndex = wordIndex;
|
|
this.containerCache = containerCache;
|
|
this.abstractCache = abstractCache;
|
|
this.blacklist = blacklist;
|
|
this.targetPeer = targetPeer;
|
|
this.urls = null;
|
|
this.count = count;
|
|
this.maxDistance = maxDistance;
|
|
this.rankingProfile = rankingProfile;
|
|
this.constraint = constraint;
|
|
}
|
|
|
|
public void run() {
|
|
this.urls = yacyClient.search(
|
|
wordhashes, excludehashes, urlhashes, prefer, filter, count, maxDistance, global, partitions,
|
|
targetPeer, wordIndex, containerCache, abstractCache,
|
|
blacklist, rankingProfile, constraint);
|
|
if (urls != null) {
|
|
// urls is an array of url hashes. this is only used for log output
|
|
StringBuffer urllist = new StringBuffer(this.urls.length * 13);
|
|
for (int i = 0; i < this.urls.length; i++) urllist.append(this.urls[i]).append(' ');
|
|
yacyCore.log.logInfo("REMOTE SEARCH - remote peer " + targetPeer.hash + ":" + targetPeer.getName() + " contributed " + urls.length + " links for word hash " + wordhashes + ": " + new String(urllist));
|
|
yacyCore.seedDB.mySeed.incRI(urls.length);
|
|
yacyCore.seedDB.mySeed.incRU(urls.length);
|
|
} else {
|
|
yacyCore.log.logInfo("REMOTE SEARCH - no answer from remote peer " + targetPeer.hash + ":" + targetPeer.getName());
|
|
}
|
|
}
|
|
|
|
public static String set2string(Set hashes) {
|
|
String wh = "";
|
|
final Iterator iter = hashes.iterator();
|
|
while (iter.hasNext()) { wh = wh + (String) iter.next(); }
|
|
return wh;
|
|
}
|
|
|
|
public int links() {
|
|
return this.urls.length;
|
|
}
|
|
|
|
public int count() {
|
|
return this.count;
|
|
}
|
|
|
|
public yacySeed target() {
|
|
return targetPeer;
|
|
}
|
|
|
|
private static yacySeed[] selectClusterPeers(TreeMap peerhashes) {
|
|
Iterator i = peerhashes.entrySet().iterator();
|
|
ArrayList l = new ArrayList();
|
|
Map.Entry entry;
|
|
yacySeed s;
|
|
while (i.hasNext()) {
|
|
entry = (Map.Entry) i.next();
|
|
s = yacyCore.seedDB.get((String) entry.getKey()); // should be getConnected; get only during testing time
|
|
if (s != null) {
|
|
s.setAlternativeAddress((String) entry.getValue());
|
|
l.add(s);
|
|
}
|
|
}
|
|
yacySeed[] result = new yacySeed[l.size()];
|
|
for (int j = 0; j < l.size(); j++) {
|
|
result[j] = (yacySeed) l.get(j);
|
|
}
|
|
return result;
|
|
//return (yacySeed[]) l.toArray();
|
|
}
|
|
|
|
private static yacySeed[] selectSearchTargets(Set wordhashes, int seedcount) {
|
|
// find out a specific number of seeds, that would be relevant for the given word hash(es)
|
|
// the result is ordered by relevance: [0] is most relevant
|
|
// the seedcount is the maximum number of wanted results
|
|
if (yacyCore.seedDB == null) { return null; }
|
|
if ((seedcount >= yacyCore.seedDB.sizeConnected()) || (yacyCore.seedDB.noDHTActivity())) {
|
|
seedcount = yacyCore.seedDB.sizeConnected();
|
|
}
|
|
|
|
// put in seeds according to dht
|
|
final kelondroMScoreCluster ranking = new kelondroMScoreCluster();
|
|
final HashMap seeds = new HashMap();
|
|
yacySeed seed;
|
|
Enumeration dhtEnum;
|
|
int c;
|
|
String wordhash;
|
|
double distance;
|
|
Iterator iter = wordhashes.iterator();
|
|
while (iter.hasNext()) {
|
|
wordhash = (String) iter.next();
|
|
dhtEnum = yacyCore.dhtAgent.getDHTSeeds(true, wordhash, (float) 0.0);
|
|
c = seedcount;
|
|
while (dhtEnum.hasMoreElements() && c > 0) {
|
|
seed = (yacySeed) dhtEnum.nextElement();
|
|
if (seed == null) continue;
|
|
distance = yacyDHTAction.dhtDistance(seed.hash, wordhash);
|
|
if (distance > 0.2) continue; // catch bug in peer selection
|
|
if (!seed.getFlagAcceptRemoteIndex()) continue; // probably a robinson peer
|
|
serverLog.logFine("PLASMA", "selectPeers/DHTorder: " + seed.hash + ":" + seed.getName() + "/" + distance + " for wordhash " + wordhash + ", score " + c);
|
|
ranking.addScore(seed.hash, c--);
|
|
seeds.put(seed.hash, seed);
|
|
}
|
|
}
|
|
|
|
// put in seeds according to size of peer
|
|
dhtEnum = yacyCore.seedDB.seedsSortedConnected(false, yacySeed.ICOUNT);
|
|
c = seedcount;
|
|
int score;
|
|
if (c > yacyCore.seedDB.sizeConnected()) { c = yacyCore.seedDB.sizeConnected(); }
|
|
while (dhtEnum.hasMoreElements() && c > 0) {
|
|
seed = (yacySeed) dhtEnum.nextElement();
|
|
if (seed == null) continue;
|
|
if (!seed.getFlagAcceptRemoteIndex()) continue; // probably a robinson peer
|
|
score = (int) Math.round(Math.random() * ((c / 3) + 3));
|
|
serverLog.logFine("PLASMA", "selectPeers/RWIcount: " + seed.hash + ":" + seed.getName() + ", RWIcount=" + seed.get(yacySeed.ICOUNT,"") + ", score " + score);
|
|
ranking.addScore(seed.hash, score);
|
|
seeds.put(seed.hash, seed);
|
|
c--;
|
|
}
|
|
|
|
// put in seeds that are public robinson peers and where the peer tags match with query
|
|
// or seeds that are newbies to ensure that public demonstrations always work
|
|
dhtEnum = yacyCore.seedDB.seedsConnected(true, false, null, (float) 0.50);
|
|
while (dhtEnum.hasMoreElements()) {
|
|
seed = (yacySeed) dhtEnum.nextElement();
|
|
if (seed == null) continue;
|
|
if (seed.matchPeerTags(wordhashes)) { // access robinson peers with matching tag
|
|
serverLog.logInfo("PLASMA", "selectPeers/PeerTags: " + seed.hash + ":" + seed.getName() + ", is specialized peer for " + seed.getPeerTags().toString());
|
|
ranking.addScore(seed.hash, seedcount);
|
|
seeds.put(seed.hash, seed);
|
|
}
|
|
if (seed.getAge() < 1) { // the 'workshop feature'
|
|
serverLog.logInfo("PLASMA", "selectPeers/Age: " + seed.hash + ":" + seed.getName() + ", is newbie, age = " + seed.getAge());
|
|
ranking.addScore(seed.hash, seedcount);
|
|
seeds.put(seed.hash, seed);
|
|
}
|
|
}
|
|
|
|
// evaluate the ranking score and select seeds
|
|
if (ranking.size() < seedcount) { seedcount = ranking.size(); }
|
|
yacySeed[] result = new yacySeed[seedcount];
|
|
c = 0;
|
|
iter = ranking.scores(false); // higher are better
|
|
while (iter.hasNext() && c < result.length) {
|
|
seed = (yacySeed) seeds.get((String) iter.next());
|
|
seed.selectscore = c;
|
|
serverLog.logFine("PLASMA", "selectPeers/_lineup_: " + seed.hash + ":" + seed.getName() + " is choice " + c);
|
|
result[c++] = seed;
|
|
}
|
|
|
|
// System.out.println("DEBUG yacySearch.selectPeers = " + seedcount + " seeds:"); for (int i = 0; i < seedcount; i++) System.out.println(" #" + i + ":" + result[i]); // debug
|
|
return result;
|
|
}
|
|
|
|
public static yacySearch[] primaryRemoteSearches(
|
|
String wordhashes, String excludehashes, String urlhashes,
|
|
String prefer, String filter, int count, int maxDist,
|
|
plasmaWordIndex wordIndex,
|
|
plasmaSearchContainer containerCache, Map abstractCache,
|
|
int targets, plasmaURLPattern blacklist,
|
|
plasmaSearchRankingProfile rankingProfile,
|
|
kelondroBitfield constraint, TreeMap clusterselection) {
|
|
// check own peer status
|
|
if (yacyCore.seedDB.mySeed == null || yacyCore.seedDB.mySeed.getPublicAddress() == null) { return null; }
|
|
|
|
// prepare seed targets and threads
|
|
final yacySeed[] targetPeers = (clusterselection == null) ? selectSearchTargets(plasmaSearchQuery.hashes2Set(wordhashes), targets) : selectClusterPeers(clusterselection);
|
|
if (targetPeers == null) return new yacySearch[0];
|
|
targets = targetPeers.length;
|
|
if (targets == 0) return new yacySearch[0];
|
|
yacySearch[] searchThreads = new yacySearch[targets];
|
|
for (int i = 0; i < targets; i++) {
|
|
searchThreads[i] = new yacySearch(wordhashes, excludehashes, urlhashes, prefer, filter, count, maxDist, true, targets, targetPeers[i],
|
|
wordIndex, containerCache, abstractCache, blacklist, rankingProfile, constraint);
|
|
searchThreads[i].start();
|
|
//try {Thread.sleep(20);} catch (InterruptedException e) {}
|
|
}
|
|
return searchThreads;
|
|
}
|
|
|
|
public static yacySearch secondaryRemoteSearch(String wordhashes, String excludehashes, String urlhashes,
|
|
plasmaWordIndex wordIndex,
|
|
plasmaSearchContainer containerCache,
|
|
String targethash, plasmaURLPattern blacklist,
|
|
plasmaSearchRankingProfile rankingProfile,
|
|
kelondroBitfield constraint, TreeMap clusterselection) {
|
|
// check own peer status
|
|
if (yacyCore.seedDB.mySeed == null || yacyCore.seedDB.mySeed.getPublicAddress() == null) { return null; }
|
|
|
|
// prepare seed targets and threads
|
|
final yacySeed targetPeer = yacyCore.seedDB.getConnected(targethash);
|
|
if (targetPeer == null) return null;
|
|
if (clusterselection != null) targetPeer.setAlternativeAddress((String) clusterselection.get(targetPeer.hash));
|
|
yacySearch searchThread = new yacySearch(wordhashes, excludehashes, urlhashes, "", "", 0, 9999, true, 0, targetPeer,
|
|
wordIndex, containerCache, new TreeMap(), blacklist, rankingProfile, constraint);
|
|
searchThread.start();
|
|
return searchThread;
|
|
}
|
|
|
|
public static int remainingWaiting(yacySearch[] searchThreads) {
|
|
if (searchThreads == null) return 0;
|
|
int alive = 0;
|
|
for (int i = 0; i < searchThreads.length; i++) {
|
|
if (searchThreads == null) break; // may occur
|
|
if (searchThreads[i].isAlive()) alive++;
|
|
}
|
|
return alive;
|
|
}
|
|
|
|
public static int collectedLinks(yacySearch[] searchThreads) {
|
|
int links = 0;
|
|
for (int i = 0; i < searchThreads.length; i++) {
|
|
if (!(searchThreads[i].isAlive())) links += searchThreads[i].urls.length;
|
|
}
|
|
return links;
|
|
}
|
|
|
|
public static void interruptAlive(yacySearch[] searchThreads) {
|
|
for (int i = 0; i < searchThreads.length; i++) {
|
|
if (searchThreads[i].isAlive()) searchThreads[i].interrupt();
|
|
}
|
|
}
|
|
|
|
}
|