mirror of
https://github.com/yacy/yacy_search_server.git
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daf0f74361
search profiling showed, that a major amount of time is wasted by computing url hashes. The computation does an intranet-check, which needs a DNS lookup. This caused that each urlhash computation needed 100-200 milliseconds, which caused remote searches to delay at least 1 second more that necessary. The solution to this problem is to attach a URL hash to the URL data structure, because that means that the url hash value can be filled after retrieval of the URL from the database. The redesign of the url/urlhash management caused a major redesign of many parts of the software. Since some parts had been decided to be given up they had been removed during this change to avoid unnecessary maintenance of unused code. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4074 6c8d7289-2bf4-0310-a012-ef5d649a1542
182 lines
8.8 KiB
Java
182 lines
8.8 KiB
Java
// transferURL.java
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// -----------------------
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// part of the AnomicHTTPD caching proxy
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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, 2005
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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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// You must compile this file with
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// javac -classpath .:../classes transferRWI.java
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import java.io.IOException;
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import java.text.ParseException;
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import de.anomic.http.httpHeader;
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import de.anomic.index.indexURLEntry;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.urlPattern.plasmaURLPattern;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.server.serverDate;
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import de.anomic.yacy.yacyCore;
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import de.anomic.yacy.yacyNetwork;
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import de.anomic.yacy.yacySeed;
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public final class transferURL {
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) throws InterruptedException {
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long start = System.currentTimeMillis();
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long freshdate = 0;
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try {freshdate = serverDate.shortDayFormatter.parse("20061101").getTime();} catch (ParseException e1) {}
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// return variable that accumulates replacements
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final plasmaSwitchboard sb = (plasmaSwitchboard) env;
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final serverObjects prop = new serverObjects();
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if ((post == null) || (env == null)) return prop;
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if (!yacyNetwork.authentifyRequest(post, env)) return prop;
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// request values
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final String iam = post.get("iam", ""); // seed hash of requester
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final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability
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// final String key = post.get("key", ""); // transmission key
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final int urlc = post.getInt("urlc", 0); // number of transported urls
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final boolean granted = sb.getConfig("allowReceiveIndex", "false").equals("true");
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final boolean blockBlacklist = sb.getConfig("indexReceiveBlockBlacklist", "false").equals("true");
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// response values
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String result = "";
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String doublevalues = "0";
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final yacySeed otherPeer = yacyCore.seedDB.get(iam);
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final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));
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if ((youare == null) || (!youare.equals(yacyCore.seedDB.mySeed.hash))) {
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sb.getLog().logInfo("Rejecting URLs from peer " + otherPeerName + ". Wrong target. Wanted peer=" + youare + ", iam=" + yacyCore.seedDB.mySeed.hash);
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result = "wrong_target";
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} else if ((!granted) || (sb.isRobinsonMode())) {
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sb.getLog().logInfo("Rejecting URLs from peer " + otherPeerName + ". Not granted.");
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result = "error_not_granted";
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} else {
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int received = 0;
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int blocked = 0;
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final int sizeBefore = sb.wordIndex.loadedURL.size();
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// read the urls from the other properties and store
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String urls;
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indexURLEntry lEntry;
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for (int i = 0; i < urlc; i++) {
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serverCore.checkInterruption();
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// read new lurl-entry
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urls = (String) post.get("url" + i);
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if (urls == null) {
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yacyCore.log.logFine("transferURL: got null URL-string from peer " + otherPeerName);
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blocked++;
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continue;
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}
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// parse new lurl-entry
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lEntry = sb.wordIndex.loadedURL.newEntry(urls);
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if (lEntry == null) {
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yacyCore.log.logWarning("transferURL: received invalid URL (entry null) from peer " + otherPeerName + "\n\tURL Property: " + urls);
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blocked++;
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continue;
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}
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// check if entry is well-formed
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indexURLEntry.Components comp = lEntry.comp();
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if (comp.url() == null) {
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yacyCore.log.logWarning("transferURL: received invalid URL from peer " + otherPeerName + "\n\tURL Property: " + urls);
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blocked++;
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continue;
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}
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// check whether entry is too old
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if (lEntry.freshdate().getTime() <= freshdate) {
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yacyCore.log.logFine("transerURL: received too old URL from peer " + otherPeerName + ": " + lEntry.freshdate());
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blocked++;
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continue;
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}
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// check if the entry is blacklisted
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if ((blockBlacklist) && (plasmaSwitchboard.urlBlacklist.isListed(plasmaURLPattern.BLACKLIST_DHT, comp.url()))) {
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int deleted = sb.wordIndex.tryRemoveURLs(lEntry.hash());
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yacyCore.log.logFine("transferURL: blocked blacklisted URL '" + comp.url().toNormalform(false, true) + "' from peer " + otherPeerName + "; deleted " + deleted + " URL entries from RWIs");
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lEntry = null;
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blocked++;
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continue;
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}
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// check if the entry is in our network domain
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if (!sb.acceptURL(comp.url())) {
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yacyCore.log.logFine("transferURL: blocked URL outside of our domain '" + comp.url().toNormalform(false, true) + "' from peer " + otherPeerName);
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lEntry = null;
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blocked++;
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continue;
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}
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// write entry to database
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try {
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sb.wordIndex.loadedURL.store(lEntry);
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sb.wordIndex.loadedURL.stack(lEntry, iam, iam, 3);
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yacyCore.log.logFine("transferURL: received URL '" + comp.url().toNormalform(false, true) + "' from peer " + otherPeerName);
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received++;
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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yacyCore.seedDB.mySeed.incRU(received);
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// return rewrite properties
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final int more = sb.wordIndex.loadedURL.size() - sizeBefore;
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doublevalues = Integer.toString(received - more);
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sb.getLog().logInfo("Received " + received + " URLs from peer " + otherPeerName + " in " + (System.currentTimeMillis() - start) + " ms, Blocked " + blocked + " URLs");
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if ((received - more) > 0) sb.getLog().logSevere("Received " + doublevalues + " double URLs from peer " + otherPeerName);
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result = "ok";
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}
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prop.putASIS("double", doublevalues);
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prop.putASIS("result", result);
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return prop;
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}
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}
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