MessageDispatcher.java
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|---|---|---|
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phex.msghandling |
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Phex |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| LINE_COMMENT | Number of line comments |  |
| EXEC_COMMENTS | Comments in executable code | |
| EXITS | Procedure exits | |
| SIZE | Size of the file in bytes | |
| DECL_COMMENTS | Comments in declarations | |
| UNIQUE_OPERANDS | Number of unique operands | |
| LOC | Lines of code | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| ELOC | Effective lines of code | |
| COMPARISONS | Number of comparison operators | |
| LOGICAL_LINES | Number of statements | |
| LINES | Number of lines in the source file | |
| CYCLOMATIC | Cyclomatic complexity | |
| PARAMS | Number of formal parameter declarations | |
| BLOCKS | Number of blocks | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| RETURNS | Number of return points from functions | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| COMMENTS | Comment lines | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| DOC_COMMENT | Number of javadoc comment lines | |
| LOOPS | Number of loops | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* PHEX - The pure-java Gnutella-servent.
* Copyright (C) 2001 - 2008 Phex Development Group
*
* 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
*
* --- SVN Information ---
* $Id: MessageDispatcher.java 4227 2008-07-13 10:24:03Z gregork $
*/
package phex.msghandling;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import phex.common.Environment;
import phex.common.HorizonTracker;
import phex.common.QueryRoutingTable;
import phex.common.address.DefaultDestAddress;
import phex.common.address.DestAddress;
import phex.common.address.IpAddress;
import phex.common.format.NumberFormatUtils;
import phex.common.log.NLogger;
import phex.host.Host;
import phex.host.HostManager;
import phex.io.buffer.ByteBuffer;
import phex.msg.GUID;
import phex.msg.InvalidMessageException;
import phex.msg.Message;
import phex.msg.MsgHeader;
import phex.msg.PingMsg;
import phex.msg.PongFactory;
import phex.msg.PongMsg;
import phex.msg.PushRequestMsg;
import phex.msg.QueryMsg;
import phex.msg.QueryResponseMsg;
import phex.msg.QueryResponseRecord;
import phex.msg.RouteTableUpdateMsg;
import phex.msg.vendor.CapabilitiesVMsg;
import phex.msg.vendor.HopsFlowVMsg;
import phex.msg.vendor.MessagesSupportedVMsg;
import phex.msg.vendor.PushProxyAcknowledgementVMsg;
import phex.msg.vendor.PushProxyRequestVMsg;
import phex.msg.vendor.TCPConnectBackRedirectVMsg;
import phex.msg.vendor.TCPConnectBackVMsg;
import phex.msg.vendor.VendorMsg;
import phex.net.connection.Connection;
import phex.net.connection.ConnectionFactory;
import phex.prefs.core.BandwidthPrefs;
import phex.prefs.core.MessagePrefs;
import phex.security.AccessType;
import phex.security.PhexSecurityManager;
import phex.servent.Servent;
import phex.share.QueryResultSearchEngine;
import phex.share.ShareFile;
import phex.share.SharedFilesService;
import phex.statistic.SimpleStatisticProvider;
import phex.statistic.StatisticProvider;
import phex.statistic.StatisticsManager;
import phex.upload.PushWorker;
import phex.utils.HexConverter;
import phex.utils.StringUtils;
class MessageDispatcher
{
private final Servent servent;
private final MessageRouting msgRouting;
private final Map<Class<? extends Message>, MessageSubscriber<? extends Message>> messageSubscribers;
private final PongFactory pongFactory;
private final SharedFilesService sharedFilesService;
private final HostManager hostMgr;
private final PhexSecurityManager securityService;
// for stats
private SimpleStatisticProvider pingMsgInCounter;
private SimpleStatisticProvider pongMsgInCounter;
private SimpleStatisticProvider queryMsgInCounter;
private SimpleStatisticProvider queryHitMsgInCounter;
private SimpleStatisticProvider pushMsgInCounter;
private SimpleStatisticProvider dropedMsgInCounter;
private SimpleStatisticProvider totalInMsgCounter;
private StatisticProvider uptimeStatsProvider;
public MessageDispatcher( Servent servent, MessageRouting msgRouting,
PongFactory pongFactory )
{
this.servent = servent;
this.msgRouting = msgRouting;
this.pongFactory = pongFactory;
messageSubscribers = new HashMap<Class<? extends Message>, MessageSubscriber<? extends Message>>();
hostMgr = servent.getHostService();
sharedFilesService = servent.getSharedFilesService();
securityService = servent.getSecurityService();
}
// temporary workaround until stats are reworked.
protected void initStats( StatisticsManager statsMgr )
{
// for stats
pingMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.PINGMSG_IN_PROVIDER );
pongMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.PONGMSG_IN_PROVIDER );
queryMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.QUERYMSG_IN_PROVIDER );
queryHitMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.QUERYHITMSG_IN_PROVIDER );
pushMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.PUSHMSG_IN_PROVIDER );
dropedMsgInCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.DROPEDMSG_IN_PROVIDER );
totalInMsgCounter = (SimpleStatisticProvider) statsMgr.getStatisticProvider(
StatisticsManager.TOTALMSG_IN_PROVIDER );
uptimeStatsProvider = statsMgr.getStatisticProvider(
StatisticsManager.DAILY_UPTIME_PROVIDER );
}
// Messy auto-detecting of generic type... causes to much trouble with
// MessageSubscribers that are capable to handle multiple Message types.
// @SuppressWarnings("unchecked")
// public <T extends Message> void addMessageSubscriber( MessageSubscriber<T> subscriber )
// {
// Class<? extends MessageSubscriber> clazz = subscriber.getClass();
// Type[] genInterfaces = clazz.getGenericInterfaces();
// for ( int i = 0; i < genInterfaces.length; i++ )
// {
// if ( !(genInterfaces[i] instanceof ParameterizedType) )
// {
// continue;
// }
// ParameterizedType parType = (ParameterizedType) genInterfaces[i];
// if ( !parType.getRawType().equals( MessageSubscriber.class ) )
// {
// continue;
// }
// Type[] typeArgs = parType.getActualTypeArguments();
// if ( typeArgs.length != 1 )
// {
// throw new IllegalArgumentException(
// "MessageSubscriber has invalid number of generic type arguments: " + typeArgs.length );
// }
// Class<T> messageClass = (Class<T>) typeArgs[0];
// if ( !Message.class.isAssignableFrom( messageClass ) )
// {
// throw new IllegalArgumentException(
// "MessageSubscriber generic type is not a Message: " + messageClass );
// }
//
// addMessageSubscriber( messageClass, subscriber );
// }
// }
public <T extends Message> void addMessageSubscriber( Class<T> clazz, MessageSubscriber<T> subscriber )
{
NLogger.debug(MessageDispatcher.class,
"Adding MessageSubscriber " + subscriber + " for type "
+ clazz );
MessageSubscriber<T> registeredSubscriber = (MessageSubscriber<T>)messageSubscribers.get( clazz );
if ( registeredSubscriber == null )
{
messageSubscribers.put( clazz, subscriber );
}
else if ( registeredSubscriber instanceof MessageSubscriberList )
{
((MessageSubscriberList<T>)registeredSubscriber).addSubscriber( subscriber );
}
else
{
MessageSubscriberList<T> list = new MessageSubscriberList<T>(
registeredSubscriber, subscriber );
messageSubscribers.put( clazz, list );
}
}
public <T extends Message> void removeMessageSubscriber( Class<T> clazz, MessageSubscriber<T> subscriber )
{
NLogger.debug(MessageDispatcher.class,
"Removing MessageSubscriber " + subscriber + " for type "
+ clazz );
MessageSubscriber<T> registeredSubscriber = (MessageSubscriber<T>)messageSubscribers.get( clazz );
if ( registeredSubscriber instanceof MessageSubscriberList )
{
((MessageSubscriberList<T>)registeredSubscriber).removeSubscriber( subscriber );
}
else
{
// either we don't have a subscriber or this is the only registered one
messageSubscribers.remove( clazz );
}
}
@SuppressWarnings("unchecked")
private void dispatchToSubscribers( Message message, Host sourceHost )
throws InvalidMessageException
{
MessageSubscriber messageSubscriber = messageSubscribers.get(
message.getClass() );
messageSubscriber.onMessage(message, sourceHost);
}
public void handlePing( PingMsg pingMsg, Host sourceHost )
{
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
NLogger.debug( MessageDispatcher.class, "Received Ping: "
+ pingMsg.getDebugString() + " - " + pingMsg.getHeader().toString());
// count ping statistic
pingMsgInCounter.increment( 1 );
MsgHeader header = pingMsg.getHeader();
// Bearshare seems to massively send pings with ttl 6 hops 1 and empty
// GUID. We currently drop them all since they are duplicates...
// if ( header.getMsgID().equals(GUID.EMPTY_GUID) )
// See if I have seen this Ping before. Drop msg if duplicate.
if ( !msgRouting.checkAndAddToPingRoutingTable( header.getMsgID(),
sourceHost ) )
{
dropMessage( pingMsg, "Dropping already seen ping", sourceHost );
return;
}
respondToPing( pingMsg, sourceHost );
}
/**
* Respond to ping using PongCache
* @param pingMsg
* @param sourceHost
*/
private void respondToPing( PingMsg pingMsg, Host sourceHost )
{
MsgHeader header = pingMsg.getHeader();
// to reduce the incoming connection attempts of other clients
// only response to ping a when we have free incoming slots or this
// ping has a original TTL ( current TTL + hops ) of 2.
byte ttl = header.getTTL();
byte hops = header.getHopsTaken();
if ( ( ttl + hops > 2 ) && !hostMgr.areIncommingSlotsAdvertised() )
{
return;
}
// For crawler pings (hops==1, ttl=1) we have a special treatment...
// We reply with all our leaf connections... in case we have them as a
// ultrapeer...
if ( hops == 1 && ttl == 1)
{// crawler ping
// respond with leaf nodes pongs, already "hoped" one step. (ttl=1,hops=1)
Host[] leafs = hostMgr.getNetworkHostsContainer().getLeafConnections();
for ( int i = 0; i < leafs.length; i++ )
{
DestAddress ha = leafs[i].getHostAddress();
PongMsg pong = pongFactory.createOtherLeafsOutgoingPong( header.getMsgID(),
(byte)1, (byte)1, ha );
sourceHost.queueMessageToSend( pong );
}
}
// send back my own pong
byte newTTL = hops++;
if ( ( hops + ttl ) <= 2)
{
newTTL = 1;
}
int avgDailyUptime = ((Integer)uptimeStatsProvider.getValue()).intValue();
int shareFileCount = sharedFilesService.getFileCount();
int shareFileSize = sharedFilesService.getTotalFileSizeInKb();
// Get my host:port for InitResponse.
PongMsg pong = pongFactory.createMyOutgoingPong( header.getMsgID(),
servent.getLocalAddress(), newTTL, shareFileCount, shareFileSize,
servent.isUltrapeer(), avgDailyUptime );
sourceHost.queueMessageToSend( pong );
// send pongs from pong cache
DestAddress orginAddress = sourceHost.getHostAddress();
IpAddress ip = orginAddress.getIpAddress();
if ( ip == null )
{
return;
}
GUID guid = header.getMsgID();
List<PongMsg> pongs = servent.getMessageService().getCachedPongs();
for( PongMsg pMsg : pongs )
{
if( ip.equals( pMsg.getPongAddress().getIpAddress() ) )
{
continue;
}
sourceHost.queueMessageToSend( pongFactory.createFromCachePong(
guid, newTTL, pMsg, securityService ) );
}
}
/**
*
*/
public void handlePong( PongMsg pongMsg, Host sourceHost )
{
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
NLogger.debug( MessageDispatcher.class, "Received Pong: "
+ pongMsg.getDebugString() + " - " + pongMsg.getHeader().toString());
// count pong statistic
pongMsgInCounter.increment( 1 );
HorizonTracker.getInstance().trackPong( pongMsg );
DestAddress pongAddress = pongMsg.getPongAddress();
AccessType access = securityService.controlHostAddressAccess( pongAddress );
if ( access == AccessType.ACCESS_STRONGLY_DENIED )
{
// drop message
dropMessage( pongMsg, "IP access strongly denied.", sourceHost );
return;
}
// add address to host catcher...
if ( access == AccessType.ACCESS_GRANTED )
{
boolean isNew = hostMgr.catchHosts( pongMsg );
if ( isNew )
{
servent.getMessageService().addPongToCache( pongMsg );
}
}
byte hopsTaken = pongMsg.getHeader().getHopsTaken();
// check if this is the response to my Ping message
if ( hopsTaken == 1 )
{
DestAddress connectedAddress = sourceHost.getHostAddress();
IpAddress connectedIP = connectedAddress.getIpAddress();
if ( connectedIP.equals( pongAddress.getIpAddress() ) )
{
sourceHost.setFileCount( pongMsg.getFileCount() );
sourceHost.setTotalFileSize( pongMsg.getFileSizeInKB() );
// I guess that a hops == 1 with equal ip address is a pong from my
// direct neighbor, therefore I also update the obviously wrong port.
int connectedPort = connectedAddress.getPort();
int pongPort = pongAddress.getPort();
if ( connectedPort != pongPort )
{
connectedAddress.setPort( pongPort );
}
}
}
if ( pongMsg.getHeader().getTTL() > 0 )
{
msgRouting.routePongMessage( pongMsg );
}
}
public void handleQuery( QueryMsg msg, Host sourceHost )
{
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
NLogger.debug( MessageDispatcher.class, "Received Query: "
+ msg.toString() + " - " + msg.getHeader().toString());
// count query statistic
queryMsgInCounter.increment( 1 );
MsgHeader header = msg.getHeader();
// See if I have seen this Query before. Drop msg if duplicate.
// This drop is done even though this could be an extension of a
// probe query. Only Limewire is doing this extension of a probe
// query currently and as stated by themselves the efficiency of it
// is doubtful.
if ( !msgRouting.checkAndAddToQueryRoutingTable( header.getMsgID(),
sourceHost ) )
{
dropMessage( msg, "Drop already seen query", sourceHost );
return;
}
// a leaf is not supposed to forward me queries not coming from itself.
if ( sourceHost.isUltrapeerLeafConnection() && header.getHopsTaken() > 2 )
{
dropMessage( msg, "Drop query from leaf with hops > 2.", sourceHost );
}
if ( MessagePrefs.DropIndexQueries.get().booleanValue() &&
QueryResultSearchEngine.INDEX_QUERY_STRING.equals( msg.getSearchString() ) )
{
dropMessage( msg, "Drop index query.", sourceHost );
}
// logging a msg can be very expensive!
//mRemoteHost.log( Logger.FINEST, "Received Msg: " + msg + " Hex: " +
// HexConverter.toHexString( body ) + " Data: " + new String( body) );
try
{
dispatchToSubscribers( msg, sourceHost );
}
catch ( InvalidMessageException exp )
{// drop invalid message
dropMessage( msg, exp.getMessage(), sourceHost);
return;
}
// Search the shared file database and get groups of shared files.
List<ShareFile> resultFiles = sharedFilesService.handleQuery( msg );
if ( resultFiles == null || resultFiles.size() == 0)
{
return;
}
respondToQuery( header, resultFiles, sourceHost );
}
private void respondToQuery( MsgHeader header, List<ShareFile> resultFiles,
Host sourceHost )
{
// Construct QueryResponse msg. Copy the original Init's GUID.
// TTL expansion on query hits doesn't matter very much so it doesn't
// hurt us to give query hits a TTL boost.
// Bearshare sets QueryHit TTL to 10
// gtk-gnutella sets QueryHit TTL to (hops + 5)
MsgHeader newHeader = new MsgHeader( header.getMsgID(),
MsgHeader.QUERY_HIT_PAYLOAD,
// Will take as many hops to get back.
// hops + 1 decided in gdf 2002-12-04
(byte)(header.getHopsTaken() + 1),
//(byte)(Math.min( 10, header.getHopsTaken() + 5 ) ),
(byte)0, 0 );
int resultCount = resultFiles.size();
if ( resultCount > 255 )
{
resultFiles.subList( 0, 255 );
resultCount = resultFiles.size();
}
assert resultCount < 255;
QueryResponseRecord[] records = new QueryResponseRecord[ resultCount ];
QueryResponseRecord record;
int recPos = 0;
for( ShareFile shareFile : resultFiles )
{
record = QueryResponseRecord.createFromShareFile( shareFile );
records[ recPos ] = record;
recPos ++;
}
DestAddress hostAddress = servent.getLocalAddress();
GUID serventGuid = servent.getServentGuid();
QueryResponseMsg response = new QueryResponseMsg(
newHeader, serventGuid, hostAddress,
Math.round( BandwidthPrefs.MaxUploadBandwidth.get().floatValue() / NumberFormatUtils.ONE_KB ),
records, hostMgr.getNetworkHostsContainer().getPushProxies(),
!servent.isFirewalled(), servent.isUploadLimitReached() );
sourceHost.queueMessageToSend( response );
}
/**
* Be aware that QueryResponseMsg from BrowseHostConnections are also handle
* through here. MessageSubscribers should honor this accordingly.
* @param queryResponseMsg the QueryResponseMsg to handle
* @param sourceHost the source host, can be null in case of BrowseHostConnection
* results.
*/
public void handleQueryResponse( QueryResponseMsg queryResponseMsg, Host sourceHost )
{
// Logging is expensive...
// if ( Logger.isLevelLogged( Logger.FINEST ) )
// {
// Logger.logMessage( Logger.FINEST, Logger.NETWORK,
// connectedHost, "Received QueryResponse: " + queryResponseMsg + " - " +
// queryResponseMsg.toDebugString() );
// }
// count query hit statistic
queryHitMsgInCounter.increment( 1 );
MsgHeader header = queryResponseMsg.getHeader();
// validate remote client id
GUID respServentId = queryResponseMsg.getRemoteServentID();
if ( respServentId.equals( servent.getServentGuid() ) )
{
dropMessage( queryResponseMsg, "My query response should never reach me.", sourceHost);
return;
}
if ( respServentId.equals( header.getMsgID() ) )
{
dropMessage( queryResponseMsg, "Message id equals servent id.", sourceHost);
return;
}
if ( respServentId.equals( GUID.EMPTY_GUID ) )
{
dropMessage( queryResponseMsg, "Servent id is empty.", sourceHost);
return;
}
DestAddress queryAddress = queryResponseMsg.getDestAddress();
AccessType access = securityService.controlHostAddressAccess( queryAddress );
if ( access == AccessType.ACCESS_STRONGLY_DENIED )
{
// drop message
dropMessage( queryResponseMsg, "IP access strongly denied.", sourceHost );
return;
}
if ( access == AccessType.ACCESS_GRANTED )
{
try
{
// MessageSubscribers should honor that QueryResponseMsg from
// BrowseHostConnections are also going through here.
dispatchToSubscribers( queryResponseMsg, sourceHost );
}
catch ( InvalidMessageException exp )
{// drop invalid message
dropMessage(queryResponseMsg, exp.getMessage(), sourceHost);
return;
}
}
// byte hopsTaken = header.getHopsTaken();
// check if this is from a direct neighbor
// if ( hopsTaken == 1 )
// {
// GUID sourceServentId = sourceHost.getServentId();
// if ( sourceServentId == null )
// {// learn neighbor serventId from QueryResponseMsg.
// sourceHost.setServentId( respServentId );
// }
// else if ( !sourceServentId.equals( respServentId ) )
// {// host responds with different serventId then before..
// // drop servent..
// sourceHost.setStatus( HostStatus.ERROR, "Switching servent id: " +
// sourceServentId.toHexString() + " - " + respServentId );
// }
// // these logics can be improved.. see GTKG search.c update_neighbour_info()
// }
if ( header.getTTL() > 0 )
{
try
{
msgRouting.routeQueryResponse( queryResponseMsg, sourceHost );
}
catch ( InvalidMessageException exp )
{// drop invalid message
dropMessage(queryResponseMsg, exp.getMessage(), sourceHost);
return;
}
}
}
public void handleRouteTableUpdate( RouteTableUpdateMsg message, Host sourceHost )
{
// no specific stats so count to total
totalInMsgCounter.increment( 1 );
if ( !(sourceHost.isQueryRoutingSupported() ||
sourceHost.isUPQueryRoutingSupported()) )
{
dropMessage( message, "QRP not supported from host.", sourceHost);
return;
}
QueryRoutingTable qrTable = sourceHost.getLastReceivedRoutingTable();
if ( qrTable == null )
{
// create new table... TODO3 maybe makes not much sense because we might
// recreate table. maybe there is a way to initialize the QRT lazy
qrTable = new QueryRoutingTable();
sourceHost.setLastReceivedRoutingTable( qrTable );
}
try
{
qrTable.updateRouteTable( message );
if ( sourceHost.isUltrapeerLeafConnection() )
{// in case this is a leaf connection, we need to update our
// local query routing table. This needs to be done since
// have our leaves QRT aggregated our QRT and are checking
// during a query against our QRT if leaves might have a hit.
servent.getMessageService().triggerQueryRoutingTableUpdate();
}
}
catch ( InvalidMessageException exp )
{// drop message
dropMessage( message, "Invalid QRT update message.", sourceHost );
}
}
public void handleVendorMessage( VendorMsg vendorMsg, Host sourceHost )
{
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
NLogger.debug( MessageDispatcher.class, "Received VendorMsg: "
+ vendorMsg.toString() + " - " + vendorMsg.getHeader().toString());
if ( vendorMsg instanceof MessagesSupportedVMsg )
{
handleMessagesSupportedVMsg( (MessagesSupportedVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof TCPConnectBackVMsg )
{
handleTCPConnectBackVMsg( (TCPConnectBackVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof TCPConnectBackRedirectVMsg )
{
handleTCPConnectBackRedirectVMsg((TCPConnectBackRedirectVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof PushProxyRequestVMsg )
{
handlePushProxyRequestVMsg( (PushProxyRequestVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof PushProxyAcknowledgementVMsg )
{
handlePushProxyAcknowledgementVMsg( (PushProxyAcknowledgementVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof HopsFlowVMsg )
{
handleHopsFlowVMsg( (HopsFlowVMsg)vendorMsg, sourceHost );
}
else if ( vendorMsg instanceof CapabilitiesVMsg )
{
handleCapabilitiesVMsg( (CapabilitiesVMsg)vendorMsg, sourceHost );
}
}
private void handleMessagesSupportedVMsg(MessagesSupportedVMsg msg, Host sourceHost )
{
sourceHost.setSupportedVMsgs( msg );
// if push proxy is supported request it..
boolean isFirewalled = servent.isFirewalled();
// if we are a leave or are firewalled and connected to a ultrapeer
// and the connection supports push proxy.
if ( ( sourceHost.isLeafUltrapeerConnection() ||
( isFirewalled && sourceHost.isUltrapeer() ) )
&& sourceHost.isPushProxySupported() )
{
PushProxyRequestVMsg pprmsg = new PushProxyRequestVMsg(
servent.getServentGuid() );
// TODO2 remove this once Limewire support PPR v2
if ( sourceHost.getVendor() != null &&
sourceHost.getVendor().indexOf( "LimeWire" ) != -1 )
{
pprmsg.setVersion( 1 );
}
sourceHost.queueMessageToSend( pprmsg );
}
if ( isFirewalled &&
servent.getMessageService().isTCPRedirectAllowed() &&
sourceHost.isTCPConnectBackSupported() )
{
DestAddress localAddress = servent.getLocalAddress();
VendorMsg tcpConnectBack = new TCPConnectBackVMsg( localAddress.getPort() );
sourceHost.queueMessageToSend( tcpConnectBack );
servent.getMessageService().incNumberOfTCPRedirectsSent();
}
}
private void handleCapabilitiesVMsg(CapabilitiesVMsg msg, Host sourceHost )
{
sourceHost.setCapabilitiesVMsgs( msg );
}
/**
* @param msg
*/
private void handleTCPConnectBackVMsg(TCPConnectBackVMsg msg, Host sourceHost )
{
int port = msg.getPort();
DestAddress address = sourceHost.getHostAddress();
if ( address.getPort() != port )
{
address = new DefaultDestAddress( address.getHostName(), port );
}
VendorMsg redirectMsg = new TCPConnectBackRedirectVMsg( address );
Host[] hosts = hostMgr.getNetworkHostsContainer().getUltrapeerConnections();
int sentCount = 0;
for ( int i = 0; sentCount <= 5 && i < hosts.length; i++ )
{
if ( sourceHost == hosts[i] )
{
// skip sending redirect to my host.
continue;
}
if ( hosts[i].isTCPConnectBackRedirectSupported() )
{
hosts[i].queueMessageToSend( redirectMsg );
sentCount ++;
}
}
}
private void handleTCPConnectBackRedirectVMsg( TCPConnectBackRedirectVMsg msg, Host sourceHost )
{
final DestAddress address = msg.getAddress();
Runnable connectBackRunner = new Runnable()
{
public void run()
{
Connection connection = null;
try
{
DestAddress connectBackAddress = new DefaultDestAddress( address.getHostName(),
address.getPort() );
connection = ConnectionFactory.createConnection(
connectBackAddress, 2000, servent.getBandwidthService().getNetworkBandwidthController() );
connection.write( ByteBuffer.wrap( StringUtils.getBytesInUsAscii( "\n\n" ) ) );
connection.flush();
}
catch ( IOException exp )
{ // failed.. don't care..
}
catch ( Exception exp )
{
NLogger.error( MessageDispatcher.class, exp, exp);
}
finally
{
if (connection != null)
{
connection.disconnect();
}
}
}
};
Environment.getInstance().executeOnThreadPool( connectBackRunner, "TCPConnectBackJob");
}
private void handlePushProxyRequestVMsg( PushProxyRequestVMsg pprvmsg, Host sourceHost )
{
if ( !sourceHost.isUltrapeerLeafConnection() )
{
return;
}
DestAddress localAddress = servent.getLocalAddress();
// PP only works if we have a valid IP to use in the PPAck message.
if( localAddress.getIpAddress() == null )
{
NLogger.warn( MessageDispatcher.class,
"Local address has no IP to use for PPAck." );
return;
}
GUID requestGUID = pprvmsg.getHeader().getMsgID();
PushProxyAcknowledgementVMsg ppavmsg =
new PushProxyAcknowledgementVMsg( localAddress,
requestGUID );
sourceHost.queueMessageToSend( ppavmsg );
msgRouting.addToPushRoutingTable( requestGUID,
sourceHost );
}
private void handlePushProxyAcknowledgementVMsg( PushProxyAcknowledgementVMsg ppavmsg, Host sourceHost )
{
// the candidate is able to be a push proxy if the ack contains my guid.
if ( servent.getServentGuid().equals( ppavmsg.getHeader().getMsgID() ) )
{
sourceHost.setPushProxyAddress( ppavmsg.getHostAddress() );
}
}
private void handleHopsFlowVMsg( HopsFlowVMsg hopsFlowVMsg, Host sourceHost )
{
byte hopsFlowValue = hopsFlowVMsg.getHopsValue();
sourceHost.setHopsFlowLimit(hopsFlowValue);
}
public void handlePushRequest( PushRequestMsg msg, Host sourceHost )
{
// count push statistic
pushMsgInCounter.increment( 1 );
// logging a msg can be very expensive! the toString() calls are bad
//mRemoteHost.log( Logger.FINEST, "Received Msg: " + msg);
AccessType access = securityService.controlHostAddressAccess(
msg.getRequestAddress() );
if ( access == AccessType.ACCESS_STRONGLY_DENIED )
{
// drop message
dropMessage( msg, "IP access strongly denied.", sourceHost );
return;
}
if ( servent.getServentGuid().equals(msg.getClientGUID() ) )
{
if ( access == AccessType.ACCESS_GRANTED )
{
new PushWorker( msg, servent.getUploadService() );
}
return;
}
if ( msg.getHeader().getTTL() > 0 )
{
servent.getMessageService().routePushMessage( msg );
}
}
private void dropMessage( Message msg, String reason, Host sourceHost )
{
NLogger.info( MessageDispatcher.class,
"Dropping message: " + reason + " from: " + sourceHost );
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
{
NLogger.debug( MessageDispatcher.class,
"Header: [" + msg.getHeader().toString() + "] - Message: [" +
msg.toDebugString() + "].");
}
sourceHost.incDropCount();
dropedMsgInCounter.increment( 1 );
}
public void dropMessage( MsgHeader header, byte[] body, String reason, Host sourceHost )
{
NLogger.info( MessageDispatcher.class,
"Dropping message: " + reason + " from: " + sourceHost );
if ( NLogger.isDebugEnabled( MessageDispatcher.class ) )
{
NLogger.debug( MessageDispatcher.class,
"Header: [" + header.toString() + "] - Body: [" +
HexConverter.toHexString( body, 0, header.getDataLength() ) + "]." );
}
sourceHost.incDropCount();
dropedMsgInCounter.increment( 1 );
}
}
The table below shows all metrics for MessageDispatcher.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 95.00 | Number of blocks | |
| BLOCK_COMMENT | 21.00 | Number of block comment lines | |
| COMMENTS | 163.00 | Comment lines | |
| COMMENT_DENSITY | 0.38 | Comment density | |
| COMPARISONS | 75.00 | Number of comparison operators | |
| CYCLOMATIC | 101.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 41.00 | Comments in declarations | |
| DOC_COMMENT | 18.00 | Number of javadoc comment lines | |
| ELOC | 424.00 | Effective lines of code | |
| EXEC_COMMENTS | 48.00 | Comments in executable code | |
| EXITS | 136.00 | Procedure exits | |
| FUNCTIONS | 24.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 79.43 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 93.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 1.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 4.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 3.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 0.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 3.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 10.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 1.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 0.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 1.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 2.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 1.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 1.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 1.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 1.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 847.00 | Number of lines in the source file | |
| LINE_COMMENT | 124.00 | Number of line comments | |
| LOC | 609.00 | Lines of code | |
| LOGICAL_LINES | 263.00 | Number of statements | |
| LOOPS | 2.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1332.00 | Number of operands | |
| OPERATORS | 2339.00 | Number of operators | |
| PARAMS | 50.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3671.00 | Halstead program length | |
| PROGRAM_VOCAB | 488.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 43.00 | Number of return points from functions | |
| SIZE | 34252.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 436.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 52.00 | Number of unique operators | |
| WHITESPACE | 75.00 | Number of whitespace lines | |