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142 lines
6.6 KiB
142 lines
6.6 KiB
// transferRWI.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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// last change: 24.01.2005
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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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// 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.util.HashSet;
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import java.util.Iterator;
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import java.util.Vector;
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import de.anomic.http.httpHeader;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.plasmaWordIndexEntry;
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import de.anomic.plasma.plasmaWordIndexEntryContainer;
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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.yacy.yacyCore;
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public class transferRWI {
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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// return variable that accumulates replacements
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plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
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serverObjects prop = new serverObjects();
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if ((post == null) || (env == null)) return prop;
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// request values
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String iam = (String) post.get("iam", ""); // seed hash of requester
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String youare = (String) post.get("youare", ""); // seed hash of the target peer, needed for network stability
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String key = (String) post.get("key", ""); // transmission key
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int wordc = Integer.parseInt((String) post.get("wordc", "")); // number of different words
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int entryc = Integer.parseInt((String) post.get("entryc", "")); // number of entries in indexes
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byte[] indexes = ((String) post.get("indexes", "")).getBytes(); // the indexes, as list of word entries
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boolean granted = switchboard.getConfig("allowReceiveIndex", "false").equals("true");
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// response values
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String result = "";
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String unknownURLs = "";
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if (granted) {
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// decode request
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Vector v = new Vector();
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int s = 0;
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int e;
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while (s < indexes.length) {
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e = s; while (e < indexes.length) if (indexes[e++] < 32) {e--; break;}
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if ((e - s) > 0) v.add(new String(indexes, s, e - s));
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s = e; while (s < indexes.length) if (indexes[s++] >= 32) {s--; break;}
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}
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// the value-vector should now have the same length as entryc
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if (v.size() != entryc) System.out.println("ERROR WITH ENTRY COUNTER: v=" + v.size() + ", entryc=" + entryc);
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// now parse the Strings in the value-vector and write index entries
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String estring;
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int p;
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String wordHash;
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String urlHash;
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plasmaWordIndexEntry entry;
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HashSet unknownURL = new HashSet();
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String[] wordhashes = new String[v.size()];
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int received = 0;
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for (int i = 0; i < v.size(); i++) {
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estring = (String) v.elementAt(i);
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p = estring.indexOf("{");
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if (p > 0) {
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wordHash = estring.substring(0, p);
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wordhashes[i] = wordHash;
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entry = new plasmaWordIndexEntry(estring.substring(p));
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switchboard.wordIndex.addEntries(plasmaWordIndexEntryContainer.instantContainer(wordHash, System.currentTimeMillis(), entry));
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urlHash = entry.getUrlHash();
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if ((!(unknownURL.contains(urlHash))) &&
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(!(switchboard.urlPool.loadedURL.exists(urlHash)))) {
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unknownURL.add(urlHash);
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}
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received++;
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}
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}
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yacyCore.seedDB.mySeed.incRI(received);
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// finally compose the unknownURL hash list
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Iterator it = unknownURL.iterator();
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while (it.hasNext()) unknownURLs += "," + (String) it.next();
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if (unknownURLs.length() > 0) unknownURLs = unknownURLs.substring(1);
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if (wordhashes.length == 0)
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switchboard.getLog().logInfo("Received 0 Words from peer " + iam + ", requested " + unknownURL.size() + " URLs");
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else
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switchboard.getLog().logInfo("Received " + received + " Words [" + wordhashes[0] + " .. " + wordhashes[wordhashes.length - 1] + "] from peer " + iam + ", requested " + unknownURL.size() + " URLs");
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result = "ok";
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} else {
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result = "error_not_granted";
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}
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prop.put("unknownURL", unknownURLs);
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prop.put("result", result);
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// return rewrite properties
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return prop;
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}
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}
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