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401 lines
21 KiB
401 lines
21 KiB
// yacyPeerActions.java
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// -------------------------------------
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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, 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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package de.anomic.yacy;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Iterator;
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import de.anomic.http.httpHeader;
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import de.anomic.http.httpc;
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import de.anomic.plasma.plasmaCrawlNURL;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.server.serverCore;
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import de.anomic.server.serverDate;
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import de.anomic.tools.nxTools;
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public class yacyPeerActions {
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private yacySeedDB seedDB;
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private plasmaSwitchboard sb;
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private HashSet<yacyPeerAction> actions;
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private HashMap<String, String> userAgents;
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public long juniorConnects;
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public long seniorConnects;
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public long principalConnects;
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public long disconnects;
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private int bootstrapLoadTimeout;
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public yacyPeerActions(yacySeedDB seedDB, plasmaSwitchboard switchboard) {
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this.seedDB = seedDB;
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this.sb = switchboard;
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this.actions = new HashSet<yacyPeerAction>();
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this.userAgents = new HashMap<String, String>();
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this.juniorConnects = 0;
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this.seniorConnects = 0;
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this.principalConnects = 0;
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this.disconnects = 0;
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this.bootstrapLoadTimeout = (int) switchboard.getConfigLong("bootstrapLoadTimeout", 6000);
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}
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public void deploy(yacyPeerAction action) {
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actions.add(action);
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}
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public void updateMySeed() {
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if (sb.getConfig("peerName", "anomic").equals("anomic")) {
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// generate new peer name
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sb.setConfig("peerName", yacySeed.makeDefaultPeerName());
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}
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seedDB.mySeed().put(yacySeed.NAME, sb.getConfig("peerName", "nameless"));
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if ((serverCore.portForwardingEnabled) && (serverCore.portForwarding != null)) {
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seedDB.mySeed().put(yacySeed.PORT, Integer.toString(serverCore.portForwarding.getPort()));
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} else {
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seedDB.mySeed().put(yacySeed.PORT, Integer.toString(serverCore.getPortNr(sb.getConfig("port", "8080"))));
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}
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long uptime = (System.currentTimeMillis() - serverCore.startupTime) / 1000;
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long uptimediff = uptime - sb.lastseedcheckuptime;
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long indexedcdiff = sb.indexedPages - sb.lastindexedPages;
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//double requestcdiff = sb.requestedQueries - sb.lastrequestedQueries;
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if (uptimediff > 300 || uptimediff <= 0 || sb.lastseedcheckuptime == -1 ) {
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sb.lastseedcheckuptime = uptime;
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sb.lastindexedPages = sb.indexedPages;
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sb.lastrequestedQueries = sb.requestedQueries;
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}
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//the speed of indexing (pages/minute) of the peer
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sb.totalPPM = (int) (sb.indexedPages * 60 / Math.max(uptime, 1));
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seedDB.mySeed().put(yacySeed.ISPEED, Long.toString(Math.round(Math.max((float) indexedcdiff, 0f) * 60f / Math.max((float) uptimediff, 1f))));
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sb.totalQPM = sb.requestedQueries * 60d / Math.max((double) uptime, 1d);
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seedDB.mySeed().put(yacySeed.RSPEED, Double.toString(sb.totalQPM /*Math.max((float) requestcdiff, 0f) * 60f / Math.max((float) uptimediff, 1f)*/ ));
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seedDB.mySeed().put(yacySeed.UPTIME, Long.toString(uptime/60)); // the number of minutes that the peer is up in minutes/day (moving average MA30)
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seedDB.mySeed().put(yacySeed.LCOUNT, Integer.toString(sb.wordIndex.loadedURL.size())); // the number of links that the peer has stored (LURL's)
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seedDB.mySeed().put(yacySeed.NCOUNT, Integer.toString(sb.crawlQueues.noticeURL.size())); // the number of links that the peer has noticed, but not loaded (NURL's)
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seedDB.mySeed().put(yacySeed.RCOUNT, Integer.toString(sb.crawlQueues.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT))); // the number of links that the peer provides for remote crawling (ZURL's)
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seedDB.mySeed().put(yacySeed.ICOUNT, Integer.toString(sb.wordIndex.size())); // the minimum number of words that the peer has indexed (as it says)
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seedDB.mySeed().put(yacySeed.SCOUNT, Integer.toString(seedDB.sizeConnected())); // the number of seeds that the peer has stored
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seedDB.mySeed().put(yacySeed.CCOUNT, Double.toString(((int) ((seedDB.sizeConnected() + seedDB.sizeDisconnected() + seedDB.sizePotential()) * 60.0 / (uptime + 1.01)) * 100) / 100.0)); // the number of clients that the peer connects (as connects/hour)
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seedDB.mySeed().put(yacySeed.VERSION, sb.getConfig("version", ""));
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if (seedDB.mySeed().get(yacySeed.PEERTYPE,"").equals(yacySeed.PEERTYPE_PRINCIPAL)) {
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// attach information about seed location
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seedDB.mySeed().put("seedURL", sb.getConfig("seedURL", ""));
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}
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seedDB.mySeed().setFlagDirectConnect(true);
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seedDB.mySeed().setLastSeenUTC();
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seedDB.mySeed().put(yacySeed.UTC, serverDate.UTCDiffString());
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seedDB.mySeed().setFlagAcceptRemoteCrawl(sb.getConfig("crawlResponse", "").equals("true"));
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seedDB.mySeed().setFlagAcceptRemoteIndex(sb.getConfig("allowReceiveIndex", "").equals("true"));
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//mySeed.setFlagAcceptRemoteIndex(true);
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}
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public void saveMySeed() {
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try {
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seedDB.mySeed().save(sb.getOwnSeedFile());
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} catch (IOException e) {}
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}
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public void loadSeedLists() {
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// uses the superseed to initialize the database with known seeds
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yacySeed ys;
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String seedListFileURL;
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yacyURL url;
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ArrayList<String> seedList;
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Iterator<String> enu;
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int lc;
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int sc = seedDB.sizeConnected();
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httpHeader header;
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yacyCore.log.logInfo("BOOTSTRAP: " + sc + " seeds known from previous run");
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// - use the superseed to further fill up the seedDB
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int ssc = 0, c = 0;
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while (true) {
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if (Thread.currentThread().isInterrupted()) break;
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seedListFileURL = sb.getConfig("network.unit.bootstrap.seedlist" + c, "");
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if (seedListFileURL.length() == 0) break;
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c++;
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if (
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seedListFileURL.startsWith("http://") ||
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seedListFileURL.startsWith("https://")
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) {
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// load the seed list
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try {
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httpHeader reqHeader = new httpHeader();
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reqHeader.put(httpHeader.PRAGMA,"no-cache");
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reqHeader.put(httpHeader.CACHE_CONTROL,"no-cache");
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url = new yacyURL(seedListFileURL, null);
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long start = System.currentTimeMillis();
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header = httpc.whead(url, url.getHost(), this.bootstrapLoadTimeout, null, null, this.sb.remoteProxyConfig,reqHeader);
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long loadtime = System.currentTimeMillis() - start;
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if (header == null) {
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if (loadtime > this.bootstrapLoadTimeout) {
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yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not available, time-out after " + loadtime + " milliseconds");
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} else {
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yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not available, no content");
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}
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} else if (header.lastModified() == null) {
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yacyCore.log.logWarning("BOOTSTRAP: seed-list URL " + seedListFileURL + " not usable, last-modified is missing");
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} else if ((header.age() > 86400000) && (ssc > 0)) {
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yacyCore.log.logInfo("BOOTSTRAP: seed-list URL " + seedListFileURL + " too old (" + (header.age() / 86400000) + " days)");
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} else {
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ssc++;
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seedList = nxTools.strings(httpc.wget(url, url.getHost(), this.bootstrapLoadTimeout, null, null, this.sb.remoteProxyConfig,reqHeader, null), "UTF-8");
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enu = seedList.iterator();
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lc = 0;
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while (enu.hasNext()) {
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ys = yacySeed.genRemoteSeed((String) enu.next(), null, true);
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if ((ys != null) && (ys.isProper() == null) &&
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((!seedDB.mySeedIsDefined()) || (seedDB.mySeed().hash != ys.hash))) {
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if (connectPeer(ys, false)) lc++;
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//seedDB.writeMap(ys.hash, ys.getMap(), "init");
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//System.out.println("BOOTSTRAP: received peer " + ys.get(yacySeed.NAME, "anonymous") + "/" + ys.getAddress());
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//lc++;
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}
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}
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yacyCore.log.logInfo("BOOTSTRAP: " + lc + " seeds from seed-list URL " + seedListFileURL + ", AGE=" + (header.age() / 3600000) + "h");
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}
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} catch (IOException e) {
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// this is when wget fails, commonly because of timeout
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yacyCore.log.logWarning("BOOTSTRAP: failed (1) to load seeds from seed-list URL " + seedListFileURL + ": " + e.getMessage(), e);
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} catch (Exception e) {
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// this is when wget fails; may be because of missing internet connection
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yacyCore.log.logSevere("BOOTSTRAP: failed (2) to load seeds from seed-list URL " + seedListFileURL + ": " + e.getMessage(), e);
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}
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}
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}
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yacyCore.log.logInfo("BOOTSTRAP: " + (seedDB.sizeConnected() - sc) + " new seeds while bootstraping.");
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}
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private synchronized boolean connectPeer(yacySeed seed, boolean direct) {
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// store a remote peer's seed
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// returns true if the peer is new and previously unknown
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if (seed == null) {
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yacyCore.log.logSevere("connect: WRONG seed (NULL)");
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return false;
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}
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final String error = seed.isProper();
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if (error != null) {
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yacyCore.log.logSevere("connect: WRONG seed (" + seed.getName() + "/" + seed.hash + "): " + error);
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return false;
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}
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if ((this.seedDB.mySeedIsDefined()) && (seed.hash.equals(this.seedDB.mySeed().hash))) {
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yacyCore.log.logInfo("connect: SELF reference " + seed.getPublicAddress());
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return false;
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}
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final String peerType = seed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_VIRGIN);
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if ((peerType.equals(yacySeed.PEERTYPE_VIRGIN)) || (peerType.equals(yacySeed.PEERTYPE_JUNIOR))) {
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// reject unqualified seeds
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yacyCore.log.logFine("connect: rejecting NOT QUALIFIED " + peerType + " seed " + seed.getName());
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return false;
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}
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final yacySeed doubleSeed = this.seedDB.lookupByIP(seed.getInetAddress(), true, false, false);
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if ((doubleSeed != null) && (doubleSeed.getPort() == seed.getPort()) && (!(doubleSeed.hash.equals(seed.hash)))) {
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// a user frauds with his peer different peer hashes
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yacyCore.log.logFine("connect: rejecting FRAUD (double hashes " + doubleSeed.hash + "/" + seed.hash + " on same port " + seed.getPort() + ") peer " + seed.getName());
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return false;
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}
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if (seed.get(yacySeed.LASTSEEN, "").length() != 14) {
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// hack for peers that do not have a LastSeen date
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seed.setLastSeenUTC();
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yacyCore.log.logFine("connect: reset wrong date (" + seed.getName() + "/" + seed.hash + ")");
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}
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// connection time
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final long nowUTC0Time = System.currentTimeMillis(); // is better to have this value in a variable for debugging
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long ctimeUTC0 = seed.getLastSeenUTC();
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if (ctimeUTC0 > nowUTC0Time) {
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// the peer is future-dated, correct it
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seed.setLastSeenUTC();
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ctimeUTC0 = nowUTC0Time;
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assert (seed.getLastSeenUTC() - ctimeUTC0 < 100);
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}
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if (Math.abs(nowUTC0Time - ctimeUTC0) > 60 * 60 * 24 * 1000) {
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// the new connection is out-of-age, we reject the connection
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yacyCore.log.logFine("connect: rejecting out-dated peer '" + seed.getName() + "' from " + seed.getPublicAddress() + "; nowUTC0=" + nowUTC0Time + ", seedUTC0=" + ctimeUTC0 + ", TimeDiff=" + serverDate.formatInterval(Math.abs(nowUTC0Time - ctimeUTC0)));
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return false;
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}
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// disconnection time
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long dtimeUTC0;
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final yacySeed disconnectedSeed = seedDB.getDisconnected(seed.hash);
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if (disconnectedSeed == null) {
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dtimeUTC0 = 0; // never disconnected: virtually disconnected maximum time ago
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} else {
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dtimeUTC0 = disconnectedSeed.getLong("dct", 0);
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}
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if (direct) {
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// remember the moment
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// Date applies the local UTC offset, which is wrong
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// we correct that by subtracting the local offset and adding
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// the remote offset.
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seed.setLastSeenUTC();
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seed.setFlagDirectConnect(true);
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} else {
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// set connection flag
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if (Math.abs(nowUTC0Time - ctimeUTC0) > 120000) seed.setFlagDirectConnect(false); // 2 minutes
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}
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// update latest version number
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if (seed.getVersion() > yacyVersion.latestRelease) yacyVersion.latestRelease = seed.getVersion();
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// prepare to update
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if (disconnectedSeed != null) {
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// if the indirect connect aims to announce a peer that we know
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// has been disconnected then we compare the dates:
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// if the new peer has a LastSeen date, and that date is before
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// the disconnection date, then we ignore the new peer
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if (!direct) {
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if (ctimeUTC0 < dtimeUTC0) {
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// the disconnection was later, we reject the connection
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yacyCore.log.logFine("connect: rejecting disconnected peer '" + seed.getName() + "' from " + seed.getPublicAddress());
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return false;
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}
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}
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// this is a return of a lost peer
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yacyCore.log.logFine("connect: returned KNOWN " + peerType + " peer '" + seed.getName() + "' from " + seed.getPublicAddress());
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this.seedDB.addConnected(seed);
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return true;
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} else {
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final yacySeed connectedSeed = this.seedDB.getConnected(seed.hash);
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if (connectedSeed != null) {
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// the seed is known: this is an update
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try {
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// if the old LastSeen date is later then the other
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// info, then we reject the info
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if ((ctimeUTC0 < (connectedSeed.getLastSeenUTC())) && (!direct)) {
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yacyCore.log.logFine("connect: rejecting old info about peer '" + seed.getName() + "'");
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return false;
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}
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if (connectedSeed.getName() != seed.getName()) {
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// TODO: update seed name lookup cache
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}
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} catch (NumberFormatException e) {
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yacyCore.log.logFine("connect: rejecting wrong peer '" + seed.getName() + "' from " + seed.getPublicAddress() + ". Cause: " + e.getMessage());
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return false;
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}
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yacyCore.log.logFine("connect: updated KNOWN " + ((direct) ? "direct " : "") + peerType + " peer '" + seed.getName() + "' from " + seed.getPublicAddress());
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seedDB.addConnected(seed);
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return true;
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} else {
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// the seed is new
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if ((seedDB.mySeedIsDefined()) && (seed.get(yacySeed.IP, "127.0.0.1").equals(this.seedDB.mySeed().get(yacySeed.IP, "127.0.0.1")))) {
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// seed from the same IP as the calling client: can be
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// the case if there runs another one over a NAT
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yacyCore.log.logFine("connect: saved NEW seed (myself IP) " + seed.getPublicAddress());
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} else {
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// completely new seed
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yacyCore.log.logFine("connect: saved NEW " + peerType + " peer '" + seed.getName() + "' from " + seed.getPublicAddress());
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}
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if (peerType.equals(yacySeed.PEERTYPE_SENIOR))
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this.seniorConnects++; // update statistics
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if (peerType.equals(yacySeed.PEERTYPE_PRINCIPAL))
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this.principalConnects++; // update statistics
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this.seedDB.addConnected(seed);
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return true;
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}
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}
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}
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private final void disconnectPeer(yacySeed seed, String cause) {
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// we do this if we did not get contact with the other peer
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yacyCore.log.logFine("connect: no contact to a " + seed.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_VIRGIN) + " peer '" + seed.getName() + "' at " + seed.getPublicAddress() + ". Cause: " + cause);
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synchronized (seedDB) {
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if (!seedDB.hasDisconnected(seed.hash)) { disconnects++; }
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seed.put("dct", Long.toString(System.currentTimeMillis()));
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seedDB.addDisconnected(seed); // update info
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}
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}
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public boolean peerArrival(yacySeed peer, boolean direct) {
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if (peer == null) return false;
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boolean res = connectPeer(peer, direct);
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// perform all actions if peer is effective new
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if (res) {
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Iterator<yacyPeerAction> i = actions.iterator();
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while (i.hasNext()) i.next().processPeerArrival(peer, direct);
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}
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return res;
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}
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public void peerDeparture(yacySeed peer, String cause) {
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if (peer == null) return;
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disconnectPeer(peer, cause);
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// perform all actions
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Iterator<yacyPeerAction> i = actions.iterator();
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while (i.hasNext()) i.next().processPeerDeparture(peer);
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}
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public void peerPing(yacySeed peer) {
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if (peer == null) return;
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// this is called only if the peer has junior status
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seedDB.addPotential(peer);
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// perform all actions
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Iterator<yacyPeerAction> i = actions.iterator();
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while (i.hasNext()) i.next().processPeerPing(peer);
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}
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public void setUserAgent(String IP, String userAgent) {
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userAgents.put(IP, userAgent);
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}
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public String getUserAgent(String IP) {
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String userAgent = (String) userAgents.get(IP);
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return (userAgent == null) ? "" : userAgent;
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}
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}
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