/*
* Created on 24-Jan-2005
* Created by Paul Gardner
* Copyright (C) 2004, 2005, 2006 Aelitis, All Rights Reserved
*
* 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.
*
* AELITIS, SAS au capital de 46,603.30 euros
* 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
*
*/
package com.aelitis.azureus.plugins.dht.impl;
import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.Properties;
import org.gudy.azureus2.core3.util.Constants;
import org.gudy.azureus2.core3.util.Debug;
import org.gudy.azureus2.core3.util.FileUtil;
import org.gudy.azureus2.core3.util.SystemTime;
import org.gudy.azureus2.plugins.*;
import org.gudy.azureus2.plugins.download.Download;
import org.gudy.azureus2.plugins.logging.LoggerChannel;
import org.gudy.azureus2.plugins.peers.Peer;
import org.gudy.azureus2.plugins.peers.PeerManager;
import org.gudy.azureus2.plugins.ui.config.ActionParameter;
import org.gudy.azureus2.plugins.ui.config.BooleanParameter;
import org.gudy.azureus2.plugins.utils.UTTimerEvent;
import org.gudy.azureus2.plugins.utils.UTTimerEventPerformer;
import com.aelitis.azureus.core.dht.DHT;
import com.aelitis.azureus.core.dht.DHTFactory;
import com.aelitis.azureus.core.dht.DHTLogger;
import com.aelitis.azureus.core.dht.DHTOperationListener;
import com.aelitis.azureus.core.dht.DHTStorageKeyStats;
import com.aelitis.azureus.core.dht.control.DHTControlStats;
import com.aelitis.azureus.core.dht.db.DHTDBStats;
import com.aelitis.azureus.core.dht.nat.DHTNATPuncherAdapter;
import com.aelitis.azureus.core.dht.router.DHTRouterStats;
import com.aelitis.azureus.core.dht.transport.DHTTransportContact;
import com.aelitis.azureus.core.dht.transport.DHTTransportException;
import com.aelitis.azureus.core.dht.transport.DHTTransportFactory;
import com.aelitis.azureus.core.dht.transport.DHTTransportListener;
import com.aelitis.azureus.core.dht.transport.DHTTransportProgressListener;
import com.aelitis.azureus.core.dht.transport.DHTTransportStats;
import com.aelitis.azureus.core.dht.transport.DHTTransportTransferHandler;
import com.aelitis.azureus.core.dht.transport.DHTTransportValue;
import com.aelitis.azureus.core.dht.transport.udp.DHTTransportUDP;
import com.aelitis.azureus.plugins.dht.DHTPlugin;
import com.aelitis.azureus.plugins.dht.DHTPluginContact;
import com.aelitis.azureus.plugins.dht.DHTPluginKeyStats;
import com.aelitis.azureus.plugins.dht.DHTPluginOperationListener;
import com.aelitis.azureus.plugins.dht.DHTPluginProgressListener;
import com.aelitis.azureus.plugins.dht.DHTPluginTransferHandler;
import com.aelitis.azureus.plugins.dht.DHTPluginValue;
import com.aelitis.azureus.plugins.dht.impl.DHTPluginStorageManager;
/**
* @author parg
*
*/
public class
DHTPluginImpl
{
private static final String SEED_ADDRESS_V4 = Constants.DHT_SEED_ADDRESS_V4;
private static final String SEED_ADDRESS_V6 = Constants.DHT_SEED_ADDRESS_V6;
private static final int SEED_PORT = 6881;
private static final long MIN_ROOT_SEED_IMPORT_PERIOD = 8*60*60*1000;
private PluginInterface plugin_interface;
private int status;
private String status_text;
private ActionParameter reseed_param;
private BooleanParameter warn_user_param;
private DHT dht;
private int port;
private byte protocol_version;
private int network;
private boolean v6;
private DHTTransportUDP transport;
private DHTPluginStorageManager storage_manager;
private long last_root_seed_import_time;
private LoggerChannel log;
private DHTLogger dht_log;
private int stats_ticks;
public
DHTPluginImpl(
PluginInterface _plugin_interface,
DHTNATPuncherAdapter _nat_adapter,
DHTPluginImplAdapter _adapter,
byte _protocol_version,
int _network,
boolean _v6,
String _ip,
int _port,
ActionParameter _reseed,
BooleanParameter _warn_user_param,
boolean _logging,
LoggerChannel _log,
DHTLogger _dht_log )
{
plugin_interface = _plugin_interface;
protocol_version = _protocol_version;
network = _network;
v6 = _v6;
port = _port;
reseed_param = _reseed;
warn_user_param = _warn_user_param;
log = _log;
dht_log = _dht_log;
final DHTPluginImplAdapter adapter = _adapter;
try{
storage_manager = new DHTPluginStorageManager( network, dht_log, getDataDir( _network ));
final PluginConfig conf = plugin_interface.getPluginconfig();
int send_delay = conf.getPluginIntParameter( "dht.senddelay", 50 );
int recv_delay = conf.getPluginIntParameter( "dht.recvdelay", 25 );
boolean bootstrap = conf.getPluginBooleanParameter( "dht.bootstrapnode", false );
// start off optimistic with reachable = true
boolean initial_reachable = conf.getPluginBooleanParameter( "dht.reachable." + network, true );
transport =
DHTTransportFactory.createUDP(
_protocol_version,
_network,
_v6,
_ip,
storage_manager.getMostRecentAddress(),
_port,
4,
2,
20000, // udp timeout - tried less but a significant number of
// premature timeouts occurred
send_delay, recv_delay,
bootstrap,
initial_reachable,
dht_log );
transport.addListener(
new DHTTransportListener()
{
public void
localContactChanged(
DHTTransportContact local_contact )
{
storage_manager.localContactChanged( local_contact );
if ( adapter != null ){
adapter.localContactChanged( getLocalAddress());
}
}
public void
currentAddress(
String address )
{
storage_manager.recordCurrentAddress( address );
}
public void
reachabilityChanged(
boolean reacheable )
{
}
});
Properties props = new Properties();
/*
System.out.println( "FRIGGED REFRESH PERIOD" );
props.put( DHT.PR_CACHE_REPUBLISH_INTERVAL, new Integer( 5*60*1000 ));
*/
if ( _network == DHT.NW_CVS ){
// reduce network usage
//System.out.println( "CVS DHT cache republish interval modified" );
props.put( DHT.PR_CACHE_REPUBLISH_INTERVAL, new Integer( 1*60*60*1000 ));
}
dht = DHTFactory.create(
transport,
props,
storage_manager,
_nat_adapter,
dht_log );
plugin_interface.firePluginEvent(
new PluginEvent()
{
public int
getType()
{
return( DHTPlugin.EVENT_DHT_AVAILABLE );
}
public Object
getValue()
{
return( dht );
}
});
dht.setLogging( _logging );
DHTTransportContact root_seed = importRootSeed();
storage_manager.importContacts( dht );
plugin_interface.getUtilities().createTimer( "DHTExport", true ).addPeriodicEvent(
10*60*1000,
new UTTimerEventPerformer()
{
public void
perform(
UTTimerEvent event )
{
checkForReSeed(false);
storage_manager.exportContacts( dht );
}
});
integrateDHT( true, root_seed );
status = DHTPlugin.STATUS_RUNNING;
status_text = "Running";
}catch( Throwable e ){
Debug.printStackTrace(e);
log.log( "DHT integrtion fails", e );
status_text = "DHT Integration fails: " + Debug.getNestedExceptionMessage( e );
status = DHTPlugin.STATUS_FAILED;
}
}
public void
updateStats(
int sample_stats_ticks )
{
stats_ticks++;
if ( transport != null ){
PluginConfig conf = plugin_interface.getPluginconfig();
boolean current_reachable = transport.isReachable();
if ( current_reachable != conf.getPluginBooleanParameter( "dht.reachable." + network, true )){
// reachability has changed
conf.setPluginParameter( "dht.reachable." + network, current_reachable );
if ( !current_reachable ){
String msg = "If you have a router/firewall, please check that you have port " + port +
" UDP open.\nDecentralised tracking requires this." ;
int warned_port = plugin_interface.getPluginconfig().getPluginIntParameter( "udp_warned_port", 0 );
if ( warned_port == port || !warn_user_param.getValue() ){
log.log( msg );
}else{
plugin_interface.getPluginconfig().setPluginParameter( "udp_warned_port", port );
log.logAlert( LoggerChannel.LT_WARNING, msg );
}
}else{
log.log( "Reachability changed for the better" );
}
}
if ( stats_ticks % sample_stats_ticks == 0 ){
logStats();
}
}
}
public int
getStatus()
{
return( status );
}
public String
getStatusText()
{
return( status_text );
}
public boolean
isReachable()
{
return( transport.isReachable());
}
public void
setLogging(
boolean l )
{
dht.setLogging( l );
}
public void
tick()
{
}
public int
getPort()
{
return( port );
}
public void
setPort(
int new_port )
{
port = new_port;
try{
transport.setPort( port );
}catch( Throwable e ){
log.log( e );
}
}
public void
logStats()
{
DHTDBStats d_stats = dht.getDataBase().getStats();
DHTControlStats c_stats = dht.getControl().getStats();
DHTRouterStats r_stats = dht.getRouter().getStats();
DHTTransportStats t_stats = transport.getStats();
long[] rs = r_stats.getStats();
log.log( "DHT:ip=" + transport.getLocalContact().getAddress() +
",net=" + transport.getNetwork() +
",prot=V" + transport.getProtocolVersion()+
",reach=" + transport.isReachable());
log.log( "Router" +
":nodes=" + rs[DHTRouterStats.ST_NODES] +
",leaves=" + rs[DHTRouterStats.ST_LEAVES] +
",contacts=" + rs[DHTRouterStats.ST_CONTACTS] +
",replacement=" + rs[DHTRouterStats.ST_REPLACEMENTS] +
",live=" + rs[DHTRouterStats.ST_CONTACTS_LIVE] +
",unknown=" + rs[DHTRouterStats.ST_CONTACTS_UNKNOWN] +
",failing=" + rs[DHTRouterStats.ST_CONTACTS_DEAD]);
log.log( "Transport" +
":" + t_stats.getString());
int[] dbv_details = d_stats.getValueDetails();
log.log( "Control:dht=" + c_stats.getEstimatedDHTSize() +
", Database:keys=" + d_stats.getKeyCount() +
",vals=" + dbv_details[DHTDBStats.VD_VALUE_COUNT]+
",loc=" + dbv_details[DHTDBStats.VD_LOCAL_SIZE]+
",dir=" + dbv_details[DHTDBStats.VD_DIRECT_SIZE]+
",ind=" + dbv_details[DHTDBStats.VD_INDIRECT_SIZE]+
",div_f=" + dbv_details[DHTDBStats.VD_DIV_FREQ]+
",div_s=" + dbv_details[DHTDBStats.VD_DIV_SIZE] );
}
protected File
getDataDir(
int network )
{
File dir = new File( plugin_interface.getUtilities().getAzureusUserDir(), "dht" );
if ( network != 0 ){
dir = new File( dir, "net" + network );
}
FileUtil.mkdirs(dir);
return( dir );
}
public void
integrateDHT(
boolean first,
DHTTransportContact remove_afterwards )
{
try{
reseed_param.setEnabled( false );
log.log( "DHT " + (first?"":"re-") + "integration starts" );
long start = SystemTime.getCurrentTime();
dht.integrate( false );
if ( remove_afterwards != null ){
log.log( "Removing seed " + remove_afterwards.getString());
remove_afterwards.remove();
}
long end = SystemTime.getCurrentTime();
log.log( "DHT " + (first?"":"re-") + "integration complete: elapsed = " + (end-start));
dht.print();
}finally{
reseed_param.setEnabled( true );
}
}
public void
checkForReSeed(
boolean force )
{
int seed_limit = 32;
try{
long[] router_stats = dht.getRouter().getStats().getStats();
if ( router_stats[ DHTRouterStats.ST_CONTACTS_LIVE] < seed_limit || force ){
if ( force ){
log.log( "Reseeding" );
}else{
log.log( "Less than 32 live contacts, reseeding" );
}
int peers_imported = 0;
// only try boostrapping off connected peers on the main network as it is unlikely
// any of them are running CVS and hence the boostrap will fail
if ( network == DHT.NW_MAIN || network == DHT.NW_MAIN_V6 ){
// first look for peers to directly import
Download[] downloads = plugin_interface.getDownloadManager().getDownloads();
outer:
for (int i=0;i<downloads.length;i++){
Download download = downloads[i];
PeerManager pm = download.getPeerManager();
if ( pm == null ){
continue;
}
Peer[] peers = pm.getPeers();
for (int j=0;j<peers.length;j++){
Peer p = peers[j];
int peer_udp_port = p.getUDPNonDataListenPort();
if ( peer_udp_port != 0 ){
if ( importSeed( p.getIp(), peer_udp_port ) != null ){
peers_imported++;
if ( peers_imported > seed_limit ){
break outer;
}
}
}
}
}
}
DHTTransportContact root_to_remove = null;
if ( peers_imported == 0 ){
root_to_remove = importRootSeed();
if ( root_to_remove != null ){
peers_imported++;
}
}
if ( peers_imported > 0 ){
integrateDHT( false, root_to_remove );
}else{
log.log( "No valid peers found to reseed from" );
}
}
}catch( Throwable e ){
log.log(e);
}
}
protected DHTTransportContact
importRootSeed()
{
try{
long now = SystemTime.getCurrentTime();
if ( now - last_root_seed_import_time > MIN_ROOT_SEED_IMPORT_PERIOD ){
last_root_seed_import_time = now;
return( importSeed( getSeedAddress(), SEED_PORT ));
}else{
log.log( " root seed imported too recently, ignoring" );
}
}catch( Throwable e ){
log.log(e);
}
return( null );
}
public DHTTransportContact
importSeed(
String ip,
int port )
{
try{
return( importSeed( InetAddress.getByName( ip ), port ));
}catch( Throwable e ){
log.log(e);
return( null );
}
}
protected DHTTransportContact
importSeed(
InetAddress ia,
int port )
{
try{
return(
transport.importContact( new InetSocketAddress(ia, port ), protocol_version ));
}catch( Throwable e ){
log.log(e);
return( null );
}
}
protected InetAddress
getSeedAddress()
{
try{
return( InetAddress.getByName( v6?SEED_ADDRESS_V6:SEED_ADDRESS_V4 ));
}catch( Throwable e ){
Debug.printStackTrace( e );
return( null );
}
}
public boolean
isDiversified(
byte[] key )
{
return( dht.isDiversified( key ));
}
public void
put(
final byte[] key,
final String description,
final byte[] value,
final byte flags,
final DHTPluginOperationListener listener)
{
dht.put( key,
description,
value,
flags,
new DHTOperationListener()
{
public void
searching(
DHTTransportContact contact,
int level,
int active_searches )
{
String indent = "";
for (int i=0;i<level;i++){
indent += " ";
}
// log.log( indent + "Put: level = " + level + ", active = " + active_searches + ", contact = " + contact.getString());
}
public void
diversified()
{
}
public void
found(
DHTTransportContact contact )
{
}
public void
read(
DHTTransportContact _contact,
DHTTransportValue _value )
{
Debug.out( "read operation not supported for puts" );
}
public void
wrote(
DHTTransportContact _contact,
DHTTransportValue _value )
{
// log.log( "Put: wrote " + _value.getString() + " to " + _contact.getString());
if ( listener != null ){
listener.valueWritten( new DHTPluginContactImpl(DHTPluginImpl.this, _contact ), mapValue( _value ));
}
}
public void
complete(
boolean timeout )
{
// log.log( "Put: complete, timeout = " + timeout );
if ( listener != null ){
listener.complete( key, timeout );
}
}
});
}
public DHTPluginValue
getLocalValue(
byte[] key )
{
final DHTTransportValue val = dht.getLocalValue( key );
if ( val == null ){
return( null );
}
return( mapValue( val ));
}
public void
get(
final byte[] key,
final String description,
final byte flags,
final int max_values,
final long timeout,
final boolean exhaustive,
final boolean high_priority,
final DHTPluginOperationListener listener )
{
dht.get( key, description, flags, max_values, timeout, exhaustive, high_priority,
new DHTOperationListener()
{
public void
searching(
DHTTransportContact contact,
int level,
int active_searches )
{
/*
String indent = "";
for (int i=0;i<level;i++){
indent += " ";
}
log.log( indent + "Get: level = " + level + ", active = " + active_searches + ", contact = " + contact.getString());
*/
}
public void
diversified()
{
if ( listener != null ){
listener.diversified();
}
}
public void
found(
DHTTransportContact contact )
{
}
public void
read(
final DHTTransportContact contact,
final DHTTransportValue value )
{
// log.log( "Get: read " + value.getString() + " from " + contact.getString() + ", originator = " + value.getOriginator().getString());
if ( listener != null ){
listener.valueRead( new DHTPluginContactImpl( DHTPluginImpl.this, value.getOriginator()), mapValue( value ));
}
}
public void
wrote(
final DHTTransportContact contact,
final DHTTransportValue value )
{
// log.log( "Get: wrote " + value.getString() + " to " + contact.getString());
}
public void
complete(
boolean _timeout )
{
// log.log( "Get: complete, timeout = " + _timeout );
if ( listener != null ){
listener.complete( key, _timeout );
}
}
});
}
public void
remove(
final byte[] key,
final String description,
final DHTPluginOperationListener listener )
{
dht.remove( key,
description,
new DHTOperationListener()
{
public void
searching(
DHTTransportContact contact,
int level,
int active_searches )
{
String indent = "";
for (int i=0;i<level;i++){
indent += " ";
}
// log.log( indent + "Remove: level = " + level + ", active = " + active_searches + ", contact = " + contact.getString());
}
public void
found(
DHTTransportContact contact )
{
}
public void
diversified()
{
}
public void
read(
DHTTransportContact contact,
DHTTransportValue value )
{
// log.log( "Remove: read " + value.getString() + " from " + contact.getString());
}
public void
wrote(
DHTTransportContact contact,
DHTTransportValue value )
{
// log.log( "Remove: wrote " + value.getString() + " to " + contact.getString());
if ( listener != null ){
listener.valueWritten( new DHTPluginContactImpl( DHTPluginImpl.this, contact ), mapValue( value ));
}
}
public void
complete(
boolean timeout )
{
// log.log( "Remove: complete, timeout = " + timeout );
if ( listener != null ){
listener.complete( key, timeout );
}
}
});
}
public DHTPluginContact
getLocalAddress()
{
return( new DHTPluginContactImpl( this, transport.getLocalContact()));
}
public DHTPluginContact
importContact(
InetSocketAddress address )
{
try{
return( new DHTPluginContactImpl( this, transport.importContact( address, protocol_version )));
}catch( DHTTransportException e ){
Debug.printStackTrace(e);
return( null );
}
}
// direct read/write support
public void
registerHandler(
byte[] handler_key,
final DHTPluginTransferHandler handler )
{
dht.getTransport().registerTransferHandler(
handler_key,
new DHTTransportTransferHandler()
{
public String
getName()
{
return( handler.getName());
}
public byte[]
handleRead(
DHTTransportContact originator,
byte[] key )
{
return( handler.handleRead( new DHTPluginContactImpl( DHTPluginImpl.this, originator ), key ));
}
public byte[]
handleWrite(
DHTTransportContact originator,
byte[] key,
byte[] value )
{
handler.handleWrite( new DHTPluginContactImpl( DHTPluginImpl.this, originator ), key, value );
return( null );
}
});
}
public byte[]
read(
final DHTPluginProgressListener listener,
DHTPluginContact target,
byte[] handler_key,
byte[] key,
long timeout )
{
try{
return( dht.getTransport().readTransfer(
new DHTTransportProgressListener()
{
public void
reportSize(
long size )
{
listener.reportSize( size );
}
public void
reportActivity(
String str )
{
listener.reportActivity( str );
}
public void
reportCompleteness(
int percent )
{
listener.reportCompleteness( percent );
}
},
((DHTPluginContactImpl)target).getContact(),
handler_key,
key,
timeout ));
}catch( DHTTransportException e ){
throw( new RuntimeException( e ));
}
}
public DHT
getDHT()
{
return( dht );
}
public void
closedownInitiated()
{
storage_manager.exportContacts( dht );
dht.destroy();
}
public boolean
isRecentAddress(
String address )
{
return( storage_manager.isRecentAddress( address ));
}
protected DHTPluginValue
mapValue(
final DHTTransportValue value )
{
if ( value == null ){
return( null );
}
return( new DHTPluginValueImpl(value));
}
public DHTPluginKeyStats
decodeStats(
DHTPluginValue value )
{
if (( value.getFlags() & DHTPlugin.FLAG_STATS) == 0 ){
return( null );
}
try{
DataInputStream dis = new DataInputStream( new ByteArrayInputStream( value.getValue()));
final DHTStorageKeyStats stats = storage_manager.deserialiseStats( dis );
return(
new DHTPluginKeyStats()
{
public int
getEntryCount()
{
return( stats.getEntryCount());
}
public int
getSize()
{
return( stats.getSize());
}
public int
getReadsPerMinute()
{
return( stats.getReadsPerMinute());
}
public byte
getDiversification()
{
return( stats.getDiversification());
}
});
}catch( Throwable e ){
Debug.printStackTrace(e);
return( null );
}
}
}
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