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https://github.com/yacy/yacy_search_server.git
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6491270b3a
removed preferred IPv4 in start options and added a new field IP6 in peer seeds which will contain one or more IPv6 addresses. Now every peer has one or more IP addresses assigned, even several IPv6 addresses are possible. The peer-ping process must check all given and possible IP addresses for a backping and return the one IP which was successful when pinging the peer. The ping-ing peer must be able to recognize which of the given IPs are available for outside access of the peer and store this accordingly. If only one IPv6 address is available and no IPv4, then the IPv6 is stored in the old IP field of the seed DNA. Many methods in Seed.java are now marked as @deprecated because they had been used for a single IP only. There is still a large construction site left in YaCy now where all these deprecated methods must be replaced with new method calls. The 'extra'-IPs, used by cluster assignment had been removed since that can be replaced with IPv6 usage in p2p clusters. All clusters must now use IPv6 if they want an intranet-routing.
290 lines
13 KiB
Java
290 lines
13 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 net.yacy.peers;
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import java.util.Map;
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import net.yacy.cora.document.encoding.ASCII;
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import net.yacy.cora.document.feed.RSSMessage;
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import net.yacy.cora.protocol.Domains;
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import net.yacy.cora.storage.ConcurrentARC;
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import net.yacy.kelondro.util.MapTools;
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import net.yacy.peers.operation.yacyVersion;
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public class PeerActions {
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private final SeedDB seedDB;
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private Map<String, String> userAgents;
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public long disconnects;
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private final NewsPool newsPool;
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public PeerActions(final SeedDB seedDB, final NewsPool newsPool) {
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this.seedDB = seedDB;
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this.newsPool = newsPool;
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this.userAgents = new ConcurrentARC<String, String>(10000, Runtime.getRuntime().availableProcessors() + 1);
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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 (this.userAgents != null) this.userAgents.clear();
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this.userAgents = null;
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}
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public boolean connectPeer(final Seed 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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Network.log.severe("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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Network.log.severe("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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Network.log.info("connect: SELF reference " + seed.getIPs());
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return false;
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}
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final String peerType = seed.get(Seed.PEERTYPE, Seed.PEERTYPE_VIRGIN);
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if ((peerType.equals(Seed.PEERTYPE_VIRGIN)) || (peerType.equals(Seed.PEERTYPE_JUNIOR))) {
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// reject unqualified seeds
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if (Network.log.isFine()) Network.log.fine("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(Seed.PEERTYPE_SENIOR) || peerType.equals(Seed.PEERTYPE_PRINCIPAL))) {
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// reject unqualified seeds
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if (Network.log.isFine()) Network.log.fine("connect: rejecting NOT QUALIFIED " + peerType + " seed " + seed.getName());
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return false;
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}
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final Seed doubleSeed = this.seedDB.lookupByIP(Domains.dnsResolve(seed.getIP()), seed.getPort(), 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 (Network.log.isFine()) Network.log.fine("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(Seed.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 (Network.log.isFine()) Network.log.fine("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 (Network.log.isFine()) Network.log.fine("connect: rejecting out-dated peer '" + seed.getName() + "' from " + seed.getIPs() + "; nowUTC0=" + nowUTC0Time + ", seedUTC0=" + ctimeUTC0 + ", TimeDiff=" + 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 Seed disconnectedSeed = this.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 (Network.log.isFine()) Network.log.fine("connect: rejecting disconnected peer '" + seed.getName() + "' from " + seed.getIPs());
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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 (Network.log.isFine()) Network.log.fine("connect: returned KNOWN " + peerType + " peer '" + seed.getName() + "' from " + seed.getIPs());
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this.seedDB.addConnected(seed);
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return true;
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}
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final Seed 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 (Network.log.isFine()) Network.log.fine("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 (Network.log.isFine()) Network.log.fine("connect: rejecting wrong peer '" + seed.getName() + "' from " + seed.getIPs() + ". Cause: " + e.getMessage());
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return false;
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}
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if (Network.log.isFine()) Network.log.fine("connect: updated KNOWN " + ((direct) ? "direct " : "") + peerType + " peer '" + seed.getName() + "' from " + seed.getIPs());
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this.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 ((this.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 (Network.log.isFine()) Network.log.fine("connect: saved NEW seed (myself IP) " + seed.getIPs());
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} else {
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// completely new seed
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if (Network.log.isFine()) Network.log.fine("connect: saved NEW " + peerType + " peer '" + seed.getName() + "' from " + seed.getIPs());
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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 Seed 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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processPeerArrival(peer);
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EventChannel.channels(EventChannel.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 Seed 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 (Network.log.isFine()) Network.log.fine("connect: no contact to a " + peer.get(Seed.PEERTYPE, Seed.PEERTYPE_VIRGIN) + " peer '" + peer.getName() + "' at " + peer.getIPs() + ". Cause: " + cause);
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synchronized (this.seedDB) {
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if (!this.seedDB.hasDisconnected(ASCII.getBytes(peer.hash))) { this.disconnects++; }
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peer.put(Seed.DCT, Long.toString(System.currentTimeMillis()));
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this.seedDB.addDisconnected(peer); // update info
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}
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EventChannel.channels(EventChannel.PEERNEWS).addMessage(new RSSMessage(peer.getName() + " left the network", "", ""));
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}
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public void peerPing(final Seed 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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this.seedDB.addPotential(peer);
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// perform all actions
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processPeerArrival(peer);
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EventChannel.channels(EventChannel.PEERNEWS).addMessage(new RSSMessage(peer.getName() + " sent me a ping", "", ""));
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}
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private void processPeerArrival(final Seed peer) {
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final String recordString = peer.get(Seed.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.isEmpty())) return;
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final String decodedString = net.yacy.utils.crypt.simpleDecode(recordString);
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final NewsDB.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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Network.log.severe("processPeerArrival", e);
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}
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}
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}
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public int sizeConnected() {
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return this.seedDB.sizeConnected();
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}
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public void setUserAgent(final String IP, final String userAgent) {
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if (this.userAgents == null) return; // case can happen during shutdown
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this.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 = this.userAgents.get(IP);
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return (userAgent == null) ? "" : userAgent;
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}
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/**
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* Format a time inteval in milliseconds into a String of the form
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* X 'day'['s'] HH':'mm
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*/
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public static String formatInterval(final long millis) {
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try {
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final long mins = millis / 60000;
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final StringBuilder uptime = new StringBuilder(40);
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final int uptimeDays = (int) (Math.floor(mins/1440.0));
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final int uptimeHours = (int) (Math.floor(mins/60.0)%24);
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final int uptimeMins = (int) mins%60;
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uptime.append(uptimeDays)
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.append(((uptimeDays == 1)?" day ":" days "))
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.append((uptimeHours < 10)?"0":"")
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.append(uptimeHours)
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.append(':')
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.append((uptimeMins < 10)?"0":"")
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.append(uptimeMins);
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return uptime.toString();
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} catch (final Exception e) {
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return "unknown";
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}
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}
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}
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