// yacyPeerActions.java // ------------------------------------- // (C) by Michael Peter Christen; mc@anomic.de // first published on http://www.anomic.de // Frankfurt, Germany, 2005 // last major change: 22.02.2005 // // 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. package de.anomic.yacy; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.net.URL; import java.util.Date; import java.util.Enumeration; import java.util.HashSet; import java.util.Iterator; import java.util.Vector; import de.anomic.http.httpHeader; import de.anomic.http.httpc; import de.anomic.plasma.plasmaSwitchboard; import de.anomic.server.serverCore; import de.anomic.server.serverSystem; import de.anomic.tools.disorderSet; public class yacyPeerActions { private yacySeedDB seedDB; private plasmaSwitchboard sb; private HashSet actions; private File superseedFile; private String superseedURL; public long juniorConnects; public long seniorConnects; public long principalConnects; public long disconnects; public yacyPeerActions(yacySeedDB seedDB, plasmaSwitchboard switchboard, File superseedFile, String superseedURL) throws IOException { this.seedDB = seedDB; this.sb = switchboard; this.actions = new HashSet(); this.superseedFile = superseedFile; this.superseedURL = superseedURL; this.superseedURL = superseedURL; this.juniorConnects = 0; this.seniorConnects = 0; this.principalConnects = 0; this.disconnects = 0; } public void deploy(yacyPeerAction action) { actions.add(action); } public void updateMySeed() { if (sb.getConfig("peerName", "nameless").equals("nameless")) sb.setConfig("peerName", serverCore.publicIP().getHostName() + yacyCore.speedKey + serverSystem.infoKey() + (System.currentTimeMillis() & 99)); seedDB.mySeed.put("Name", sb.getConfig("peerName", "nameless")); seedDB.mySeed.put("Port", sb.getConfig("port", "8080")); seedDB.mySeed.put("ISpeed", "unknown"); // the speed of indexing (words/minute) of the peer long uptime = ((yacyCore.universalTime() - Long.parseLong(sb.getConfig("startupTime", "0"))) / 1000) / 60; seedDB.mySeed.put("Uptime", "" + uptime); // the number of minutes that the peer is up in minutes/day (moving average MA30) seedDB.mySeed.put("LCount", "" + sb.lUrlSize()); // the number of links that the peer has stored (LURL's) seedDB.mySeed.put("ICount", "" + sb.cacheSizeMin()); // the minimum number of words that the peer has indexed (as it says) seedDB.mySeed.put("SCount", "" + seedDB.sizeConnected()); // the number of seeds that the peer has stored 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) seedDB.mySeed.put("Version", sb.getConfig("version", "")); if (seedDB.mySeed.get("PeerType","").equals("principal")) { // attach information about seed location seedDB.mySeed.put("seedURL", sb.getConfig("seedURL", "")); } seedDB.mySeed.setFlagDirectConnect(true); seedDB.mySeed.put("LastSeen", yacyCore.universalDateShortString()); seedDB.mySeed.setFlagAcceptRemoteCrawl(sb.getConfig("crawlResponse", "").equals("true")); seedDB.mySeed.setFlagAcceptRemoteIndex(sb.getConfig("allowReceiveIndex", "").equals("true")); //mySeed.setFlagAcceptRemoteIndex(true); } public void saveMySeed() { try { seedDB.mySeed.save(seedDB.myOwnSeedFile); } catch (IOException e) {} } public void loadSeedLists() { // uses the superseed to initialize the database with known seeds yacySeed ys; String seedListFileURL; URL url; Vector seedList; Enumeration enu; int lc; int sc = seedDB.sizeConnected(); httpHeader header; yacyCore.log.logInfo("BOOTSTRAP: " + sc + " seeds known from previous run"); // - load the superseed: a list of URL's disorderSet superseed = loadSuperseed(superseedFile, superseedURL); // - use the superseed to further fill up the seedDB int ssc = 0; for (int i = 0; i < superseed.size(); i++) { seedListFileURL = (String) superseed.any(); if (seedListFileURL.startsWith("http://")) { // load the seed list try { url = new URL(seedListFileURL); header = httpc.whead(url, 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort); if ((header == null) || (header.lastModified() == null)) { yacyCore.log.logInfo("BOOTSTRAP: seed-list url " + seedListFileURL + " not available"); } else if ((header.age() > 86400000) && (ssc > 0)) { yacyCore.log.logInfo("BOOTSTRAP: seed-list url " + seedListFileURL + " too old (" + (header.age() / 86400000) + " days)"); } else { ssc++; seedList = httpc.wget(url, 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort); enu = seedList.elements(); lc = 0; while (enu.hasMoreElements()) { ys = yacySeed.genRemoteSeed((String) enu.nextElement(), null, new Date()); if ((ys != null) && (ys.isProper()) && ((seedDB.mySeed == null) || (seedDB.mySeed.hash != ys.hash))) { if (connectPeer(ys, false)) lc++; //seedDB.writeMap(ys.hash, ys.getMap(), "init"); //System.out.println("BOOTSTRAP: received peer " + ys.get("Name", "anonymous") + "/" + ys.getAddress()); //lc++; } } yacyCore.log.logInfo("BOOTSTRAP: " + lc + " seeds from seed-list url " + seedListFileURL + ", AGE=" + (header.age() / 3600000) + "h"); } } catch (Exception e) { // this is when wget fails; may be because of missing internet connection // we do nothing here and go silently over it System.out.println("BOOTSTRAP: failed to load seeds from seed-list url " + seedListFileURL); } } } yacyCore.log.logInfo("BOOTSTRAP: " + (seedDB.sizeConnected() - sc) + " new seeds while bootstraping."); } private disorderSet loadSuperseed(File local, String url) { // this returns a list of locations where seed list-files can be found disorderSet supsee = new disorderSet(); String line; // read in local file int lc = 0; try { BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(local))); while ((line = br.readLine()) != null) { line = line.trim(); //System.out.println("one line in file:" + line); if (line.length() > 0) supsee.add(line); } br.close(); lc = supsee.size(); yacyCore.log.logInfo("BOOTSTRAP: " + lc + " seed-list urls from superseed file " + local.toString()); } catch (IOException e) { //e.printStackTrace(); supsee = new disorderSet(); yacyCore.log.logInfo("BOOTSTRAP: failed to load seed-list urls from superseed file " + local.toString() + ": " + e.getMessage()); } // read in remote file from url try { Vector remote = httpc.wget(new URL(url), 5000, null, null, sb.remoteProxyHost, sb.remoteProxyPort); if ((remote != null) && (remote.size() > 0)) { Enumeration e = remote.elements(); while (e.hasMoreElements()) { line = (String) e.nextElement(); if (line != null) { line = line.trim(); supsee.add(line); } } } yacyCore.log.logInfo("BOOTSTRAP: " + (supsee.size() - lc) + " seed-list urls from superseed URL " + url); } catch (Exception e) { supsee = new disorderSet(); yacyCore.log.logInfo("BOOTSTRAP: failed to load seed-list urls from superseed URL " + url + ": " + e.getMessage()); } return supsee; } synchronized public boolean connectPeer(yacySeed seed, boolean direct) { // store a remote peer's seed // returns true if the peer is new and previously unknown if (seed == null) { yacyCore.log.logInfo("connect: WRONG seed (NULL)"); return false; } else if (!(seed.isProper())) { yacyCore.log.logInfo("connect: WRONG seed (" + seed.getName() + "/" + seed.hash + ")"); return false; } else if ((seedDB.mySeed != null) && (seed.hash.equals(seedDB.mySeed.hash))) { yacyCore.log.logInfo("connect: SELF reference " + seed.getAddress()); return false; } else { String peerType = seed.get("PeerType", "virgin"); // reject unqualified seeds if ((peerType.equals("virgin")) || (peerType.equals("junior"))) { yacyCore.log.logDebug("connect: rejecting NOT QUALIFIED " + peerType + " seed " + seed.getName()); return false; } // we may store that seed, but still have different cases if (seed.get("LastSeen", "").length() < 14) { // hack for peers that do not have a LastSeen date seed.put("LastSeen", "20040101000000"); } // connection time long ctime; try { ctime = yacyCore.shortFormatter.parse(seed.get("LastSeen", "20040101000000")).getTime(); // maybe correct it slightly if (ctime > yacyCore.universalTime()) { ctime = ((2 * ctime) + yacyCore.universalTime()) / 3; seed.put("LastSeen", yacyCore.shortFormatter.format(new Date(ctime))); } } catch (java.text.ParseException e) { ctime = yacyCore.universalTime(); } // disconnection time long dtime; yacySeed disconnectedSeed = seedDB.getDisconnected(seed.hash); if (disconnectedSeed == null) { dtime = 0; // never disconnected: virtually disconnected maximum time ago } else try { dtime = yacyCore.shortFormatter.parse((String) disconnectedSeed.get("disconnected", "20040101000000")).getTime(); } catch (java.text.ParseException e) { dtime = 0; } if (direct) { // remember the moment ctime = yacyCore.universalTime(); seed.put("LastSeen", yacyCore.shortFormatter.format(new Date(ctime))); seed.setFlagDirectConnect(true); } else { // set connection flag if ((yacyCore.universalTime() - ctime) > 120000) seed.setFlagDirectConnect(false); // 2 minutes } // prepare to update if (disconnectedSeed != null) { // if the indirect connect aims to announce a peer that we know has been disconnected // then we compare the dates: // if the new peer has a LastSeen date, and that date is before the disconnection date, // then we ignore the new peer if (!(direct)) { if (ctime < dtime) { // the disconnection was later, we reject the connection yacyCore.log.logDebug("connect: rejecting disconnected peer '" + seed.getName() + "' from " + seed.getAddress()); return false; } if ((yacyCore.universalTime() - ctime) > 3600000) { // the new connection is out-of-age, we reject the connection yacyCore.log.logDebug("connect: rejecting out-dated peer '" + seed.getName() + "' from " + seed.getAddress()); return false; } if ((yacyCore.universalTime() - ctime) > 3600000) { // the new connection is future-dated, we reject the connection yacyCore.log.logDebug("connect: rejecting future-dated peer '" + seed.getName() + "' from " + seed.getAddress()); return false; } } // this is a return of a lost peer yacyCore.log.logDebug("connect: returned KNOWN " + peerType + " peer '" + seed.getName() + "' from " + seed.getAddress()); seedDB.addConnected(seed); return false; } else { yacySeed connectedSeed = seedDB.getConnected(seed.hash); if (connectedSeed != null) { // the seed is known: this is an update try { // if the old LastSeen date is later then the other info, then we reject the info if ((ctime < yacyCore.shortFormatter.parse(connectedSeed.get("LastSeen", "20040101000000")).getTime()) && (!(direct))) { yacyCore.log.logDebug("connect: rejecting old info about peer '" + seed.getName() + "'"); return false; } } catch (java.text.ParseException e) {} yacyCore.log.logDebug("connect: updated KNOWN " + ((direct) ? "direct " : "") + peerType + " peer '" + seed.getName() + "' from " + seed.getAddress()); seedDB.addConnected(seed); return false; } else { // the seed is new if (((String) seed.get("IP", "127.0.0.1")).equals((String) seedDB.mySeed.get("IP", "127.0.0.1"))) { // seed from the same IP as the calling client: can be the case if there runs another one over a NAT yacyCore.log.logDebug("connect: saved NEW seed (myself IP) " + seed.getAddress()); } else { // 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); } }