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yacy_search_server/htroot/yacy/transferURL.java

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// transferURL.java
// -----------------------
// part of the AnomicHTTPD caching proxy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004, 2005
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// 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 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.
// You must compile this file with
// javac -classpath .:../classes transferRWI.java
import de.anomic.http.httpHeader;
import de.anomic.plasma.plasmaSwitchboard;
import de.anomic.plasma.plasmaCrawlLURL;
import de.anomic.server.serverCore;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacySeed;
public final class transferURL {
public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch ss) throws InterruptedException {
if (post == null || ss == null) { return null; }
long start = System.currentTimeMillis();
// return variable that accumulates replacements
final plasmaSwitchboard sb = (plasmaSwitchboard) ss;
final serverObjects prop = new serverObjects();
if (prop == null || sb == null) { return null; }
// request values
final String iam = post.get("iam", ""); // seed hash of requester
// final String youare = post.get("youare", ""); // seed hash of the target peer, needed for network stability
// final String key = post.get("key", ""); // transmission key
final int urlc = post.getInt("urlc", 0); // number of transported urls
final boolean granted = sb.getConfig("allowReceiveIndex", "false").equals("true");
final boolean blockBlacklist = sb.getConfig("indexReceiveBlockBlacklist", "false").equals("true");
// response values
String result = "";
String doublevalues = "0";
final yacySeed otherPeer = yacyCore.seedDB.get(iam);
final String otherPeerName = iam + ":" + ((otherPeer == null) ? "NULL" : (otherPeer.getName() + "/" + otherPeer.getVersion()));
if (granted) {
int received = 0;
final int sizeBefore = sb.urlPool.loadedURL.size();
// read the urls from the other properties and store
String urls;
plasmaCrawlLURL.Entry lEntry;
for (int i = 0; i < urlc; i++) {
serverCore.checkInterruption();
urls = (String) post.get("url" + i);
if (urls == null) {
yacyCore.log.logFine("transferURL: got null URL-string from peer " + otherPeerName);
} else {
lEntry = sb.urlPool.loadedURL.newEntry(urls, true);
if ((lEntry != null) && (lEntry.url() != null)) {
if ((blockBlacklist) &&
(plasmaSwitchboard.urlBlacklist.isListed(lEntry.hash(), lEntry.url()))) {
int deleted = sb.wordIndex.tryRemoveURLs(lEntry.hash());
yacyCore.log.logFine("transferURL: blocked blacklisted URL '" + lEntry.url() + "' from peer " + otherPeerName + "; deleted " + deleted + " URL entries from RWIs");
lEntry = null;
} else {
lEntry.store();
sb.urlPool.loadedURL.stackEntry(lEntry, iam, iam, 3);
yacyCore.log.logFine("transferURL: received URL '"
+ lEntry.url() + "' from peer "
+ otherPeerName);
received++;
}
} else {
yacyCore.log.logWarning("transferURL: received invalid URL from peer " + otherPeerName +
"\n\tURL Property: " + urls);
// TODO: should we send back an error message???
}
}
}
yacyCore.seedDB.mySeed.incRU(received);
// return rewrite properties
final int more = sb.urlPool.loadedURL.size() - sizeBefore;
doublevalues = Integer.toString(received - more);
sb.getLog().logInfo("Received " + received + " URLs from peer " + otherPeerName + " in " + (System.currentTimeMillis() - start) + " ms.");
if ((received - more) > 0) sb.getLog().logSevere("Received " + doublevalues + " double URLs from peer " + otherPeerName);
result = "ok";
} else {
sb.getLog().logInfo("Rejecting URLs from peer " + otherPeerName + ". Not granted.");
result = "error_not_granted";
}
prop.put("double", doublevalues);
prop.put("result", result);
return prop;
}
}