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https://github.com/yacy/yacy_search_server.git
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b6fb239e74
some file types are containers for several files. These containers had been parsed in such a way that the set of resulting parsed content was merged into one single document before parsing. Using this parser infrastructure it is not possible to parse document containers that contain individual files. An example is a rss file where the rss messages can be treated as individual documents with their own url reference. Another example is a surrogate file which was treated with a special operation outside of the parser infrastructure. This commit introduces a redesigned parser interface and a new abstract parser implementation. The new parser interface has now only one entry point and returns always a set of parsed documents. In case of single documents the parser method returns a set of one documents. To be compliant with the new interface, the zip and tar parser had been also completely redesigned. All parsers are now much more simple and cleaner in its structure. The switchboard operations had been extended to operate with sets of parsed files, not single parsed files. additionally, parsing of jar manifest files had been added. git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6955 6c8d7289-2bf4-0310-a012-ef5d649a1542
258 lines
12 KiB
Java
258 lines
12 KiB
Java
// yacyPeerActions.java
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// -------------------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://yacy.net
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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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package de.anomic.yacy;
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import java.util.Map;
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import java.util.concurrent.ConcurrentHashMap;
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import net.yacy.cora.document.RSSMessage;
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import net.yacy.kelondro.logging.Log;
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import net.yacy.kelondro.util.DateFormatter;
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import net.yacy.kelondro.util.MapTools;
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public class yacyPeerActions {
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private final yacySeedDB seedDB;
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private Map<String, String> userAgents;
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public long disconnects;
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private final yacyNewsPool newsPool;
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public yacyPeerActions(final yacySeedDB seedDB, final yacyNewsPool newsPool) {
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this.seedDB = seedDB;
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this.newsPool = newsPool;
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this.userAgents = new ConcurrentHashMap<String, String>();
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this.disconnects = 0;
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}
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public void close() {
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// the seedDB and newsPool should be cleared elsewhere
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if (userAgents != null) userAgents.clear();
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userAgents = null;
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}
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public synchronized boolean connectPeer(final yacySeed seed, final 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(false);
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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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if (yacyCore.log.isFine()) 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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if (!(peerType.equals(yacySeed.PEERTYPE_SENIOR) || peerType.equals(yacySeed.PEERTYPE_PRINCIPAL))) {
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// reject unqualified seeds
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if (yacyCore.log.isFine()) 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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if (yacyCore.log.isFine()) 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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if (yacyCore.log.isFine()) 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) / 1000 / 60 > 60 * 6 ) {
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// the new connection is out-of-age, we reject the connection
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if (yacyCore.log.isFine()) yacyCore.log.logFine("connect: rejecting out-dated peer '" + seed.getName() + "' from " + seed.getPublicAddress() + "; nowUTC0=" + nowUTC0Time + ", seedUTC0=" + ctimeUTC0 + ", TimeDiff=" + DateFormatter.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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if (yacyCore.log.isFine()) 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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if (yacyCore.log.isFine()) 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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}
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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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if (yacyCore.log.isFine()) 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 (final NumberFormatException e) {
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if (yacyCore.log.isFine()) 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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if (yacyCore.log.isFine()) 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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}
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// the seed is new
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if ((seedDB.mySeedIsDefined()) && (seed.getIP().equals(this.seedDB.mySeed().getIP()))) {
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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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if (yacyCore.log.isFine()) 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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if (yacyCore.log.isFine()) yacyCore.log.logFine("connect: saved NEW " + peerType + " peer '" + seed.getName() + "' from " + seed.getPublicAddress());
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}
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this.seedDB.addConnected(seed);
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return true;
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}
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public boolean peerArrival(final yacySeed peer, final boolean direct) {
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if (peer == null) return false;
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final boolean res = connectPeer(peer, direct);
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if (res) {
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// perform all actions if peer is effective new
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this.processPeerArrival(peer);
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yacyChannel.channels(yacyChannel.PEERNEWS).addMessage(new RSSMessage(peer.getName() + " joined the network", "", ""));
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}
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return res;
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}
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public void peerDeparture(final yacySeed peer, final String cause) {
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if (peer == null) return;
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// we do this if we did not get contact with the other peer
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if (yacyCore.log.isFine()) yacyCore.log.logFine("connect: no contact to a " + peer.get(yacySeed.PEERTYPE, yacySeed.PEERTYPE_VIRGIN) + " peer '" + peer.getName() + "' at " + peer.getPublicAddress() + ". Cause: " + cause);
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synchronized (seedDB) {
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if (!seedDB.hasDisconnected(peer.hash.getBytes())) { disconnects++; }
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peer.put("dct", Long.toString(System.currentTimeMillis()));
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seedDB.addDisconnected(peer); // update info
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}
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yacyChannel.channels(yacyChannel.PEERNEWS).addMessage(new RSSMessage(peer.getName() + " left the network", "", ""));
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}
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public void peerPing(final 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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processPeerArrival(peer);
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yacyChannel.channels(yacyChannel.PEERNEWS).addMessage(new RSSMessage(peer.getName() + " sent me a ping", "", ""));
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}
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private void processPeerArrival(final yacySeed peer) {
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final String recordString = peer.get("news", null);
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//System.out.println("### triggered news arrival from peer " + peer.getName() + ", news " + ((recordString == null) ? "empty" : "attached"));
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if ((recordString == null) || (recordString.length() == 0)) return;
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final String decodedString = de.anomic.tools.crypt.simpleDecode(recordString, "");
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final yacyNewsDB.Record record = this.newsPool.parseExternal(decodedString);
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if (record != null) {
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//System.out.println("### news arrival from peer " + peer.getName() + ", decoded=" + decodedString + ", record=" + recordString + ", news=" + record.toString());
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final String cre1 = MapTools.string2map(decodedString, ",").get("cre");
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final String cre2 = MapTools.string2map(record.toString(), ",").get("cre");
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if ((cre1 == null) || (cre2 == null) || (!(cre1.equals(cre2)))) {
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System.out.println("### ERROR - cre are not equal: cre1=" + cre1 + ", cre2=" + cre2);
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return;
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}
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try {
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synchronized (this.newsPool) {this.newsPool.enqueueIncomingNews(record);}
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} catch (final Exception e) {
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Log.logSevere("YACY", "processPeerArrival", e);
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}
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}
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}
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public void setUserAgent(final String IP, final String userAgent) {
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if (userAgents == null) return; // case can happen during shutdown
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userAgents.put(IP, userAgent);
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}
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public String getUserAgent(final String IP) {
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final String userAgent = userAgents.get(IP);
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return (userAgent == null) ? "" : userAgent;
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}
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}
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