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368 lines
18 KiB
368 lines
18 KiB
20 years ago
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// 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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// last major change: 22.02.2005
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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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package de.anomic.yacy;
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import java.io.*;
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import java.util.*;
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import de.anomic.server.*;
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import de.anomic.plasma.*;
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import java.net.*;
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import de.anomic.kelondro.*;
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import de.anomic.tools.*;
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import de.anomic.http.*;
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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 actions;
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private File superseedFile;
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private String superseedURL;
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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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public yacyPeerActions(yacySeedDB seedDB, plasmaSwitchboard switchboard,
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File superseedFile,
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String superseedURL) throws IOException {
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this.seedDB = seedDB;
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this.sb = switchboard;
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this.actions = new HashSet();
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this.superseedFile = superseedFile;
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this.superseedURL = superseedURL;
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this.superseedURL = superseedURL;
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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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}
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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", "nameless").equals("nameless")) sb.setConfig("peerName", serverCore.publicIP().getHostName() + yacyCore.speedKey + serverSystem.infoKey() + (System.currentTimeMillis() & 99));
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seedDB.mySeed.put("Name", sb.getConfig("peerName", "nameless"));
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seedDB.mySeed.put("Port", sb.getConfig("port", "8080"));
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seedDB.mySeed.put("ISpeed", "unknown"); // the speed of indexing (words/minute) of the peer
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long uptime = ((yacyCore.universalTime() - Long.parseLong(sb.getConfig("startupTime", "0"))) / 1000) / 60;
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seedDB.mySeed.put("Uptime", "" + uptime); // the number of minutes that the peer is up in minutes/day (moving average MA30)
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seedDB.mySeed.put("LCount", "" + sb.lUrlSize()); // the number of links that the peer has stored (LURL's)
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seedDB.mySeed.put("ICount", "" + sb.cacheSizeMin()); // the minimum number of words that the peer has indexed (as it says)
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seedDB.mySeed.put("SCount", "" + seedDB.sizeConnected()); // the number of seeds that the peer has stored
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seedDB.mySeed.put("CCount", "" + (((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("Version", sb.getConfig("version", ""));
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if (seedDB.mySeed.get("PeerType","").equals("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.put("LastSeen", yacyCore.universalDateShortString());
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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(seedDB.myOwnSeedFile);
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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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URL url;
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Vector seedList;
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Enumeration 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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// - load the superseed: a list of URL's
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disorderSet superseed = loadSuperseed(superseedFile, superseedURL);
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// - use the superseed to further fill up the seedDB
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int ssc = 0;
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for (int i = 0; i < superseed.size(); i++) {
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seedListFileURL = (String) superseed.any();
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if (seedListFileURL.startsWith("http://")) {
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// load the seed list
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try {
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url = new URL(seedListFileURL);
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header = httpc.whead(url, 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort);
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if ((header == null) || (header.lastModified() == null)) {
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yacyCore.log.logInfo("BOOTSTRAP: seed-list url " + seedListFileURL + " not available");
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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 = httpc.wget(url, 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort);
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enu = seedList.elements();
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lc = 0;
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while (enu.hasMoreElements()) {
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ys = yacySeed.genRemoteSeed((String) enu.nextElement(), null, new Date());
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if ((ys != null) && (ys.isProper()) &&
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((seedDB.mySeed == null) || (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("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 (Exception e) {
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// this is when wget fails; may be because of missing internet connection
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// we do nothing here and go silently over it
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System.out.println("BOOTSTRAP: failed to load seeds from seed-list url " + seedListFileURL);
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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 disorderSet loadSuperseed(File local, String url) {
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// this returns a list of locations where seed list-files can be found
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disorderSet supsee = new disorderSet();
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String line;
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// read in local file
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int lc = 0;
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try {
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BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(local)));
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while ((line = br.readLine()) != null) {
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line = line.trim();
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//System.out.println("one line in file:" + line);
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if (line.length() > 0) supsee.add(line);
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}
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br.close();
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lc = supsee.size();
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yacyCore.log.logInfo("BOOTSTRAP: " + lc + " seed-list urls from superseed file " + local.toString());
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} catch (IOException e) {
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//e.printStackTrace();
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supsee = new disorderSet();
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yacyCore.log.logInfo("BOOTSTRAP: failed to load seed-list urls from superseed file " + local.toString() + ": " + e.getMessage());
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}
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// read in remote file from url
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try {
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Vector remote = httpc.wget(new URL(url), 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort);
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if ((remote != null) && (remote.size() > 0)) {
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Enumeration e = remote.elements();
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while (e.hasMoreElements()) {
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line = (String) e.nextElement();
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if (line != null) {
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line = line.trim();
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supsee.add(line);
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}
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}
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}
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yacyCore.log.logInfo("BOOTSTRAP: " + (supsee.size() - lc) + " seed-list urls from superseed URL " + url);
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} catch (Exception e) {
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supsee = new disorderSet();
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yacyCore.log.logInfo("BOOTSTRAP: failed to load seed-list urls from superseed URL " + url + ": " + e.getMessage());
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}
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return supsee;
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}
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synchronized public 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.logInfo("connect: WRONG seed (NULL)");
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return false;
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} else if (!(seed.isProper())) {
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yacyCore.log.logInfo("connect: WRONG seed (" + seed.getName() + "/" + seed.hash + ")");
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return false;
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} else if ((seedDB.mySeed != null) && (seed.hash.equals(seedDB.mySeed.hash))) {
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yacyCore.log.logInfo("connect: SELF reference " + seed.getAddress());
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return false;
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} else {
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String peerType = seed.get("PeerType", "virgin");
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// reject unqualified seeds
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if ((peerType.equals("virgin")) || (peerType.equals("junior"))) {
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yacyCore.log.logDebug("connect: rejecting NOT QUALIFIED " + peerType + " seed " + seed.getName());
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return false;
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}
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// we may store that seed, but still have different cases
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if (seed.get("LastSeen", "").length() < 14) {
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// hack for peers that do not have a LastSeen date
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seed.put("LastSeen", "20040101000000");
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}
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// connection time
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long ctime;
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try {
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ctime = yacyCore.shortFormatter.parse(seed.get("LastSeen", "20040101000000")).getTime();
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// maybe correct it slightly
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if (ctime > yacyCore.universalTime()) {
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ctime = ((2 * ctime) + yacyCore.universalTime()) / 3;
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seed.put("LastSeen", yacyCore.shortFormatter.format(new Date(ctime)));
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}
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} catch (java.text.ParseException e) {
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ctime = yacyCore.universalTime();
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}
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// disconnection time
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long dtime;
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yacySeed disconnectedSeed = seedDB.getDisconnected(seed.hash);
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if (disconnectedSeed == null) {
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dtime = 0; // never disconnected: virtually disconnected maximum time ago
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} else try {
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dtime = yacyCore.shortFormatter.parse((String) disconnectedSeed.get("disconnected", "20040101000000")).getTime();
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} catch (java.text.ParseException e) {
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dtime = 0;
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}
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if (direct) {
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// remember the moment
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ctime = yacyCore.universalTime();
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seed.put("LastSeen", yacyCore.shortFormatter.format(new Date(ctime)));
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seed.setFlagDirectConnect(true);
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} else {
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// set connection flag
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if ((yacyCore.universalTime() - ctime) > 120000) seed.setFlagDirectConnect(false); // 2 minutes
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}
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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 has been disconnected
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// then we compare the dates:
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// if the new peer has a LastSeen date, and that date is before the disconnection date,
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// then we ignore the new peer
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if (!(direct)) {
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if (ctime < dtime) {
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// the disconnection was later, we reject the connection
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yacyCore.log.logDebug("connect: rejecting disconnected peer '" + seed.getName() + "' from " + seed.getAddress());
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return false;
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}
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if ((yacyCore.universalTime() - ctime) > 3600000) {
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// the new connection is out-of-age, we reject the connection
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yacyCore.log.logDebug("connect: rejecting out-dated peer '" + seed.getName() + "' from " + seed.getAddress());
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return false;
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}
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if ((yacyCore.universalTime() - ctime) > 3600000) {
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// the new connection is future-dated, we reject the connection
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yacyCore.log.logDebug("connect: rejecting future-dated peer '" + seed.getName() + "' from " + seed.getAddress());
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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.logDebug("connect: returned KNOWN " + peerType + " peer '" + seed.getName() + "' from " + seed.getAddress());
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seedDB.addConnected(seed);
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return false;
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} else {
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yacySeed connectedSeed = 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 info, then we reject the info
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if ((ctime < yacyCore.shortFormatter.parse(connectedSeed.get("LastSeen", "20040101000000")).getTime()) && (!(direct))) {
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yacyCore.log.logDebug("connect: rejecting old info about peer '" + seed.getName() + "'");
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return false;
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}
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} catch (java.text.ParseException e) {}
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yacyCore.log.logDebug("connect: updated KNOWN " + ((direct) ? "direct " : "") + peerType + " peer '" + seed.getName() + "' from " + seed.getAddress());
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seedDB.addConnected(seed);
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return false;
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} else {
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// the seed is new
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if (((String) seed.get("IP", "127.0.0.1")).equals((String) seedDB.mySeed.get("IP", "127.0.0.1"))) {
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// seed from the same IP as the calling client: can be the case if there runs another one over a NAT
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yacyCore.log.logDebug("connect: saved NEW seed (myself IP) " + seed.getAddress());
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} else {
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||
|
|
// completely new seed
|
||
|
|
yacyCore.log.logDebug("connect: saved NEW " + peerType + " peer '" + seed.getName() + "' from " + seed.getAddress());
|
||
|
|
}
|
||
|
|
if (peerType.equals("senior")) seniorConnects++; // update statistics
|
||
|
|
if (peerType.equals("principal")) principalConnects++; // update statistics
|
||
|
|
seedDB.addConnected(seed);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
synchronized public void disconnectPeer(yacySeed seed) {
|
||
|
|
// we do this if we did not get contact with the other peer
|
||
|
|
yacyCore.log.logDebug("connect: no contact to a " + seed.get("PeerType", "virgin") + " peer '" + seed.getName() + "' at " + seed.getAddress());
|
||
|
|
if (!(seedDB.hasDisconnected(seed.hash))) disconnects++;
|
||
|
|
seed.put("disconnected", yacyCore.universalDateShortString());
|
||
|
|
seedDB.addDisconnected(seed); // update info
|
||
|
|
}
|
||
|
|
|
||
|
|
public boolean peerArrival(yacySeed peer, boolean direct) {
|
||
|
|
boolean res = connectPeer(peer, direct);
|
||
|
|
// perform all actions if peer is effective new
|
||
|
|
if (res) {
|
||
|
|
Iterator i = actions.iterator();
|
||
|
|
while (i.hasNext()) ((yacyPeerAction) i.next()).processPeerArrival(peer, direct);
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void peerDeparture(yacySeed peer) {
|
||
|
|
//System.out.println("PEER DEPARTURE:" + peer.toString());
|
||
|
|
disconnectPeer(peer);
|
||
|
|
// perform all actions
|
||
|
|
Iterator i = actions.iterator();
|
||
|
|
while (i.hasNext()) ((yacyPeerAction) i.next()).processPeerDeparture(peer);
|
||
|
|
}
|
||
|
|
|
||
|
|
public void peerPing(yacySeed peer) {
|
||
|
|
// this is called only if the peer has junior status
|
||
|
|
seedDB.addPotential(peer);
|
||
|
|
// perform all actions
|
||
|
|
Iterator i = actions.iterator();
|
||
|
|
while (i.hasNext()) ((yacyPeerAction) i.next()).processPeerPing(peer);
|
||
|
|
}
|
||
|
|
}
|