ManagedTorrent.java
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com.limegroup.bittorrent |
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FrostWire |
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| Metric | Description | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| DECL_COMMENTS | Comments in declarations | |
| CYCLOMATIC | Cyclomatic complexity | |
| EXITS | Procedure exits | |
| RETURNS | Number of return points from functions | |
| FUNCTIONS | Number of function declarations | |
| ELOC | Effective lines of code | |
| LINES | Number of lines in the source file | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| COMPARISONS | Number of comparison operators | |
| LOC | Lines of code | |
| OPERATORS | Number of operators | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0143 | JAVA0143 Synchronized method | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_LENGTH | Halstead program length | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERANDS | Number of unique operands | |
| BLOCKS | Number of blocks | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| EXEC_COMMENTS | Comments in executable code | |
| OPERANDS | Number of operands | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| COMMENTS | Comment lines | |
| JAVA0041 | JAVA0041 Nested synchronized block | |
| JAVA0020 | JAVA0020 Field name does not have required form | |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0031 | JAVA0031 Case statement not properly closed | |
| LINE_COMMENT | Number of line comments | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0109 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| LOOPS | Number of loops | |
| NEST_DEPTH | Maximum nesting depth | |
package com.limegroup.bittorrent;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ScheduledExecutorService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.limewire.concurrent.ExecutorsHelper;
import org.limewire.concurrent.SyncWrapper;
import org.limewire.io.DiskException;
import org.limewire.io.NetworkInstanceUtils;
import org.limewire.service.ErrorService;
import org.limewire.util.FileUtils;
import com.limegroup.bittorrent.choking.Choker;
import com.limegroup.bittorrent.choking.ChokerFactory;
import com.limegroup.bittorrent.disk.DiskManagerListener;
import com.limegroup.bittorrent.disk.TorrentDiskManager;
import com.limegroup.bittorrent.handshaking.BTConnectionFetcher;
import com.limegroup.bittorrent.handshaking.BTConnectionFetcherFactory;
import com.limegroup.bittorrent.messages.BTHave;
import com.limegroup.bittorrent.settings.BittorrentSettings;
import com.limegroup.bittorrent.tracking.TrackerManager;
import com.limegroup.bittorrent.tracking.TrackerManagerFactory;
import com.limegroup.gnutella.FileManager;
import com.limegroup.gnutella.NetworkManager;
import com.limegroup.gnutella.URN;
import com.limegroup.gnutella.auth.ContentManager;
import com.limegroup.gnutella.auth.ContentResponseData;
import com.limegroup.gnutella.auth.ContentResponseObserver;
import com.limegroup.gnutella.filters.IPFilter;
import com.limegroup.gnutella.settings.SharingSettings;
import com.limegroup.gnutella.util.EventDispatcher;
import com.limegroup.gnutella.util.StrictIpPortSet;
/**
* Class that keeps track of state relevant to a single torrent.
*
* It manages various components relevant to the torrent download
* such as the Choker, Connection Fetcher, Verifying Folder.
*
* It keeps track of the known and connected peers and contains the
* logic for starting and stopping the torrent.
*/
public class ManagedTorrent implements Torrent, DiskManagerListener, BTLinkListener {
private static final Log LOG = LogFactory.getLog(ManagedTorrent.class);
/**
* A shared processing queue for disk-related tasks.
*/
private static final ExecutorService DEFAULT_DISK_INVOKER =
ExecutorsHelper.newProcessingQueue("ManagedTorrent");
/** the executor of tasks involving network io. */
private final ScheduledExecutorService networkInvoker;
/**
* Executor that changes the state of this torrent and does
* the moving of files to the complete location, and other tasks
* involving disk io.
*/
private ExecutorService diskInvoker = DEFAULT_DISK_INVOKER;
/**
* The list of known good TorrentLocations that we are not connected
* or connecting to at the moment
*/
private Set<TorrentLocation> _peers;
/**
* the meta info for this torrent
*/
private BTMetaInfo _info;
/**
* The manager of disk operations.
*/
private volatile TorrentDiskManager _folder;
/**
* The manager of tracker requests.
*/
private final TrackerManager trackerManager;
/**
* Factory for our connection fetcher
*/
private final BTConnectionFetcherFactory connectionFetcherFactory;
/**
* The fetcher of connections.
*/
private volatile BTConnectionFetcher _connectionFetcher;
/** Manager of the BT links of this torrent */
private final BTLinkManager linkManager;
/** Factory for our chokers */
private final ChokerFactory chokerFactory;
/**
* The manager of choking logic
*/
private Choker choker;
/**
* Locking this->state.getLock() ok.
*/
private final SyncWrapper<TorrentState> state =
new SyncWrapper<TorrentState>(TorrentState.QUEUED);
/** The downloaded data this session */
private volatile long totalDown;
/** Event dispatcher for events generated by this torrent */
private final EventDispatcher<TorrentEvent, TorrentEventListener> dispatcher;
private final TorrentContext context;
private final NetworkManager networkManager;
private final ContentManager contentManager;
private final IPFilter ipFilter;
private final TorrentManager torrentManager;
private final FileManager fileManager;
private final NetworkInstanceUtils networkInstanceUtils;
/**
* Constructs new ManagedTorrent
*
* @param info the <tt>BTMetaInfo</tt> for this torrent
* @param dispatcher a dispatcher for events generated by this torrent
* @param networkInvoker a <tt>SchedulingThreadPool</tt> to execute
* network tasks on
* @param fileManager
* @param diskInvoker a <tt>SchedulingThreadPool</tt> to execute
* disk tasks on
*/
ManagedTorrent(TorrentContext context,
EventDispatcher<TorrentEvent, TorrentEventListener> dispatcher,
ScheduledExecutorService networkInvoker,
NetworkManager networkManager,
TrackerManagerFactory trackerManagerFactory,
ChokerFactory chokerFactory,
BTLinkManagerFactory linkManagerFactory,
BTConnectionFetcherFactory connectionFetcherFactory,
ContentManager contentManager,
IPFilter ipFilter,
TorrentManager torrentManager,
FileManager fileManager,
NetworkInstanceUtils networkInstanceUtils) {
this.context = context;
this.networkInvoker = networkInvoker;
this.dispatcher = dispatcher;
this.networkManager = networkManager;
this.chokerFactory = chokerFactory;
this.connectionFetcherFactory = connectionFetcherFactory;
this.contentManager = contentManager;
this.ipFilter = ipFilter;
this.torrentManager = torrentManager;
this.fileManager = fileManager;
this.networkInstanceUtils = networkInstanceUtils;
_info = context.getMetaInfo();
_folder = getContext().getDiskManager();
_peers = Collections.emptySet();
linkManager = linkManagerFactory.getLinkManager();
trackerManager = trackerManagerFactory.getTrackerManager(this);
}
/**
* notification that a request to the tracker(s) has started.
*/
public void setScraping() {
synchronized(state.getLock()) {
if (state.get() == TorrentState.WAITING_FOR_TRACKER)
state.set(TorrentState.SCRAPING);
}
}
/**
* Accessor for the info hash
*
* @return byte[] containing the info hash
*/
public byte[] getInfoHash() {
return _info.getInfoHash();
}
/**
* Accessor for meta info
*
* @return <tt>BTMetaInfo</tt> for this torrent
*/
public BTMetaInfo getMetaInfo() {
return _info;
}
/**
* @return the <tt>TorrentContext</tt> for this torrent
*/
public TorrentContext getContext() {
return context;
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#isComplete()
*/
public boolean isComplete() {
return state.get() != TorrentState.DISK_PROBLEM && _folder.isComplete();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#start()
*/
public void start() {
if (LOG.isDebugEnabled())
LOG.debug("requesting torrent start", new Exception());
synchronized(state.getLock()) {
if (state.get() != TorrentState.QUEUED)
throw new IllegalStateException("torrent should be queued but is "+state.get());
}
dispatchEvent(TorrentEvent.Type.STARTING);
diskInvoker.execute(new Runnable() {
public void run() {
if (state.get() != TorrentState.QUEUED) // something happened, do not start.
return;
LOG.debug("executing torrent start");
initializeTorrent();
initializeFolder();
if (state.get() == TorrentState.DISK_PROBLEM)
return;
dispatchEvent(TorrentEvent.Type.STARTED);
TorrentState s = state.get();
if (s == TorrentState.SEEDING || s == TorrentState.VERIFYING)
return;
validateTorrent();
startConnecting();
}
});
}
private void validateTorrent() {
ContentResponseObserver observer = new ContentResponseObserver() {
public void handleResponse(URN urn, ContentResponseData response) {
if(response != null && !response.isOK() &&
urn.equals(context.getMetaInfo().getURN())) {
boolean wasActive;
synchronized(ManagedTorrent.this) {
synchronized(state.getLock()) {
wasActive = isActive();
state.set(TorrentState.INVALID);
}
if (wasActive)
stopImpl();
}
}
}
};
contentManager.request(context.getMetaInfo().getURN(),
observer, 5000);
}
/**
* Starts the tracker request if necessary and the fetching of
* connections.
*/
private void startConnecting() {
boolean shouldFetch = false;
synchronized(state.getLock()) {
if (state.get() != TorrentState.QUEUED)
return;
// kick off connectors if we already have some addresses
if (_peers.size() > 0) {
state.set(TorrentState.CONNECTING);
shouldFetch = true;
} else
state.set(TorrentState.SCRAPING);
}
if (shouldFetch)
_connectionFetcher.fetch();
// connect to tracker(s)
trackerManager.announceStart();
// start the choking / unchoking of connections
choker.start();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#stop()
*/
public synchronized void stop() {
if (!isActive()) {
throw new IllegalStateException("torrent cannot be stopped in state "+
state.get());
}
state.set(TorrentState.STOPPED);
stopImpl();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.DiskManagerListener#diskExceptionHappened()
*/
public synchronized void diskExceptionHappened(DiskException e) {
synchronized(state.getLock()) {
if (state.get() == TorrentState.DISK_PROBLEM)
return;
state.set(TorrentState.DISK_PROBLEM);
}
stopImpl();
if (BittorrentSettings.REPORT_DISK_PROBLEMS.getBoolean())
ErrorService.error(e);
}
/**
* Performs the actual stop.
*/
private synchronized void stopImpl() {
if (!stopState())
throw new IllegalStateException("stopping in wrong state "+state.get());
// close the folder and stop the periodic tasks
_folder.close();
// fire off an announcement to the tracker
// unless we're stopping because of a tracker failure
String description = null;
if (state.get() != TorrentState.TRACKER_FAILURE)
trackerManager.announceStop();
else
description = trackerManager.getLastFailureReason();
// write the snapshot if not complete
if (!_folder.isComplete()) {
Runnable saver = new Runnable() {
public void run() {
try {
saveInfoMapInIncomplete();
} catch (IOException ignored){}
}
};
diskInvoker.execute(saver);
}
// shutdown various components
Runnable closer = new Runnable() {
public void run() {
choker.shutdown();
linkManager.shutdown();
_connectionFetcher.shutdown();
}
};
networkInvoker.execute(closer);
dispatchEvent(TorrentEvent.Type.STOPPED, description);
LOG.debug("Torrent stopped!");
}
private void saveInfoMapInIncomplete() throws IOException {
String path = context.getFileSystem().getBaseFile().getParent()+
File.separator+".dat"+context.getFileSystem().getName();
FileUtils.writeObject(path, context.getMetaInfo().toMemento());
}
private void dispatchEvent(TorrentEvent.Type type, String description) {
TorrentEvent evt = new TorrentEvent(this, type, this, description);
dispatcher.dispatchEvent(evt);
}
private void dispatchEvent(TorrentEvent.Type type) {
dispatchEvent(type, null);
}
/**
* @return if the current state is a stopped state.
*/
private boolean stopState() {
switch(state.get()) {
case PAUSED:
case STOPPED:
case DISK_PROBLEM:
case TRACKER_FAILURE:
case INVALID:
return true;
}
return false;
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#pause()
*/
public synchronized void pause() {
boolean wasActive = false;
synchronized(state.getLock()) {
if (!isActive() && state.get() != TorrentState.QUEUED)
return;
wasActive = isActive();
state.set(TorrentState.PAUSED);
}
if (wasActive)
stopImpl();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#resume()
*/
public boolean resume() {
synchronized(state.getLock()) {
switch(state.get()) {
case PAUSED :
case TRACKER_FAILURE:
case STOPPED:
state.set(TorrentState.QUEUED);
return true;
default:
return false;
}
}
}
/**
* notification that a connection was closed.
*/
public void linkClosed(BTLink btc) {
if (btc.isWorthRetrying()) {
// this forgets any strikes on the location
TorrentLocation ep = new TorrentLocation(btc.getEndpoint());
ep.strike();
_peers.add(ep);
}
removeConnection(btc);
if (!needsMoreConnections())
return;
TorrentState s = state.get();
if (s == TorrentState.DOWNLOADING || s == TorrentState.CONNECTING)
_connectionFetcher.fetch();
}
public void linkInterested(BTLink interested) {
if (!interested.isChoked())
rechoke();
}
public void linkNotInterested(BTLink notInterested) {
if (!notInterested.isChoked())
rechoke();
}
public void trackerRequestFailed() {
synchronized(state.getLock()) {
if (state.get() == TorrentState.SCRAPING)
state.set(TorrentState.WAITING_FOR_TRACKER);
}
}
/**
* Initializes some state relevant to the torrent
*/
private void initializeTorrent() {
_peers = Collections.synchronizedSet(new StrictIpPortSet<TorrentLocation>());
choker = chokerFactory.getChoker(linkManager,
false);
_connectionFetcher = connectionFetcherFactory.getBTConnectionFetcher(this);
}
/**
* Initializes the verifying folder
*/
private void initializeFolder() {
try {
_folder.open(this);
saveInfoMapInIncomplete();
} catch (IOException ioe) {
// problem opening files cannot recover.
if (LOG.isDebugEnabled())
LOG.debug("unrecoverable error", ioe);
state.set(TorrentState.DISK_PROBLEM);
return;
}
// if we happen to have the complete torrent in the incomplete folder
// move it to the complete folder.
if (_folder.isComplete())
completeTorrentDownload();
else if (_folder.isVerifying())
state.set(TorrentState.VERIFYING);
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.DiskManagerListener#verificationComplete()
*/
public void verificationComplete() {
diskInvoker.execute(new Runnable() {
public void run() {
synchronized(state.getLock()) {
if (state.get() != TorrentState.VERIFYING)
return;
state.set(TorrentState.QUEUED);
}
startConnecting();
if (_folder.isComplete())
completeTorrentDownload();
}
});
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.DiskManagerListener#notifyOfComplete(int)
*/
public void chunkVerified(int in) {
if (LOG.isDebugEnabled())
LOG.debug("got completed chunk " + in);
if (_folder.isVerifying())
return;
final BTHave have = new BTHave(in);
Runnable haveNotifier = new Runnable() {
public void run() {
linkManager.sendHave(have);
}
};
networkInvoker.execute(haveNotifier);
if (_folder.isComplete()) {
LOG.info("file is complete");
diskInvoker.execute(new Runnable(){
public void run(){
if (isDownloading())
completeTorrentDownload();
}
});
}
}
/**
* @return the state of this torrent
*/
public TorrentState getState() {
return state.get();
}
/**
* adds location to try
*
* @param to a TorrentLocation for this download
*/
public void addEndpoint(TorrentLocation to) {
if (_peers.contains(to) || linkManager.isConnectedTo(to))
return;
if (!ipFilter.allow(to.getAddress()))
return;
if (networkInstanceUtils.isMe(to.getAddress(), to.getPort()))
return;
if (_peers.add(to)) {
synchronized(state.getLock()) {
if (state.get() == TorrentState.SCRAPING)
state.set(TorrentState.CONNECTING);
}
_connectionFetcher.fetch();
}
}
/**
* Stops the torrent because of tracker failure.
*/
public synchronized void stopVoluntarily() {
boolean stop = false;
synchronized(state.getLock()) {
if (!isActive())
return;
if (state.get() != TorrentState.SEEDING) {
state.set(TorrentState.TRACKER_FAILURE);
stop = true;
}
}
if (stop)
stopImpl();
}
/**
* @return true if we need to fetch any more connections
*/
public boolean needsMoreConnections() {
if (!isActive())
return false;
// if we are complete, do not open any sockets - the active torrents will need them.
if (isComplete() && torrentManager.hasNonSeeding())
return false;
// provision some slots for incoming connections unless we're firewalled
// https://hal.inria.fr/inria-00162088/en/ recommends 1/2, we'll do 3/5
int limit = TorrentManager.getMaxTorrentConnections();
if (networkManager.acceptedIncomingConnection())
limit = limit * 3 / 5;
return linkManager.getNumConnections() < limit;
}
/**
* @return true if a fetched connection should be added.
*/
public boolean shouldAddConnection(TorrentLocation loc) {
if (linkManager.isConnectedTo(loc))
return false;
return linkManager.getNumConnections() < TorrentManager.getMaxTorrentConnections();
}
/**
* adds a fetched connection
* @return true if it was added
*/
public boolean addConnection(final BTLink btc) {
if (LOG.isDebugEnabled())
LOG.debug("trying to add connection " + btc.toString());
boolean shouldAdd = false;
synchronized(state.getLock()) {
switch(state.get()) {
case CONNECTING :
case SCRAPING :
case WAITING_FOR_TRACKER :
state.set(TorrentState.DOWNLOADING);
dispatchEvent(TorrentEvent.Type.DOWNLOADING);
case DOWNLOADING :
case SEEDING:
shouldAdd = true;
}
}
if (!shouldAdd)
return false;
linkManager.addLink(btc);
_peers.remove(btc.getEndpoint());
if (LOG.isDebugEnabled())
LOG.debug("added connection " + btc.toString());
return true;
}
/**
* private helper method, removing connection
*/
private void removeConnection(final BTLink btc) {
if (LOG.isDebugEnabled())
LOG.debug("removing connection " + btc.toString());
linkManager.removeLink(btc);
if (btc.isUploading())
rechoke();
boolean connectionsEmpty = linkManager.getNumConnections() == 0;
boolean peersEmpty = _peers.isEmpty();
synchronized(state.getLock()) {
if (connectionsEmpty && state.get() == TorrentState.DOWNLOADING) {
if (peersEmpty)
state.set(TorrentState.WAITING_FOR_TRACKER);
else
state.set(TorrentState.CONNECTING);
}
}
}
/**
* saves the complete files to the shared folder
*/
private synchronized void completeTorrentDownload() {
// cancel all requests and uploads and disconnect from seeds
Runnable r = new Runnable(){
public void run() {
linkManager.disconnectSeedsChokeRest();
// clear the state as we no longer need it
// (until source exchange is implemented)
_peers.clear();
}
};
networkInvoker.execute(r);
// save the files to the destination folder
try {
saveFiles();
} catch (IOException failed) {
diskExceptionHappened(new DiskException(failed));
return;
}
state.set(TorrentState.SEEDING);
// switch the choker logic and resume uploads
choker.shutdown();
choker = chokerFactory.getChoker(linkManager,
true);
choker.start();
choker.rechoke();
// tell the tracker we are a seed now
trackerManager.announceComplete();
dispatchEvent(TorrentEvent.Type.COMPLETE);
}
/**
* Saves the complete files to destination folder.
*/
private void saveFiles() throws IOException {
// close the folder
synchronized(_folder) {
if (!_folder.isOpen())
return;
_folder.close();
}
if (LOG.isDebugEnabled())
LOG.debug("folder closed");
// move it to the complete location
state.set(TorrentState.SAVING);
context.getFileSystem().moveToCompleteFolder();
if (!_info.isPrivate())
addToLibrary();
LOG.trace("saved files");
context.initializeDiskManager(true);
LOG.trace("initialized folder");
context.getMetaInfo().resetFileDesc();
// and re-open it for seeding.
_folder = context.getDiskManager();
if (LOG.isDebugEnabled())
LOG.debug("new veryfing folder");
_folder.open(this);
if (LOG.isDebugEnabled())
LOG.debug("folder opened");
}
private void addToLibrary() {
boolean force = SharingSettings.SHARE_DOWNLOADED_FILES_IN_NON_SHARED_DIRECTORIES.getValue();
File _completeFile = context.getFileSystem().getCompleteFile();
if (_completeFile .isFile()) {
if (force)
fileManager.addFileAlways(_completeFile);
else
fileManager.addFileIfShared(_completeFile);
} else if (_completeFile.isDirectory() &&
(force || fileManager.isFileInCompletelySharedDirectory(_completeFile)))
fileManager.addSharedFolder(_completeFile);
}
/**
* @return the next time we should announce to the tracker
*/
public long getNextTrackerRequestTime() {
return trackerManager.getNextTrackerRequestTime();
}
/**
* @return a peer we should try to connect to next
*/
public TorrentLocation getTorrentLocation() {
long now = System.currentTimeMillis();
TorrentLocation ret = null;
synchronized(_peers) {
for (Iterator<TorrentLocation> iter = _peers.iterator(); iter.hasNext();) {
TorrentLocation loc = iter.next();
if (loc.isBusy(now))
continue;
iter.remove();
if (!linkManager.isConnectedTo(loc)) {
ret = loc;
break;
}
}
}
return ret;
}
/**
* trigger a rechoking of the connections
*/
private void rechoke() {
choker.rechoke();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#isPaused()
*/
public boolean isPaused() {
return state.get() == TorrentState.PAUSED;
}
/**
* two torrents are equal if their infoHashes are.
*/
public boolean equals(Object o) {
if (!(o instanceof ManagedTorrent))
return false;
ManagedTorrent mt = (ManagedTorrent) o;
return Arrays.equals(mt.getInfoHash(), getInfoHash());
}
/**
* @return if the torrent is active - either downloading or
* seeding, saving or verifying
*/
public boolean isActive() {
synchronized(state.getLock()) {
if (isDownloading())
return true;
switch(state.get()) {
case SEEDING:
case VERIFYING:
case SAVING:
return true;
}
}
return false;
}
/**
* @return if the torrent can be paused
*/
public boolean isPausable() {
synchronized(state.getLock()) {
if (isDownloading())
return true;
switch(state.get()) {
case QUEUED:
case VERIFYING:
return true;
}
}
return false;
}
/**
* @return if the torrent is currently in one of the downloading states.
*/
boolean isDownloading() {
switch(state.get()) {
case WAITING_FOR_TRACKER:
case SCRAPING:
case CONNECTING:
case DOWNLOADING:
return true;
}
return false;
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getNumConnections()
*/
public int getNumConnections() {
return linkManager.getNumConnections();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getNumPeers()
*/
public int getNumPeers() {
return _peers.size();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getNumBusyPeers()
*/
public int getNumNonInterestingPeers() {
return linkManager.getNumNonInterestingPeers();
}
public int getNumChockingPeers() {
return linkManager.getNumChockingPeers();
}
/**
* records some data was downloaded
*/
public void countDownloaded(int amount) {
totalDown += amount;
}
public long getTotalUploaded(){
return _info.getAmountUploaded();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getTotalDownloaded()
*/
public long getTotalDownloaded() {
return totalDown;
}
/**
* @return the ratio of uploaded / downloaded data.
*/
public float getRatio() {
return _info.getRatio();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getAmountLost()
*/
public long getAmountLost() {
return _folder.getNumCorruptedBytes();
}
public boolean hasNonBusyLocations() {
long now = System.currentTimeMillis();
synchronized(_peers) {
for (TorrentLocation to : _peers) {
if (!to.isBusy(now))
return true;
}
}
return false;
}
/**
* @return the time until a recently failed location can be
* retried, or Long.MAX_VALUE if no such found.
*/
public long getNextLocationRetryTime() {
long soonest = Long.MAX_VALUE;
long now = System.currentTimeMillis();
synchronized(_peers) {
for (TorrentLocation to : _peers) {
soonest = Math.min(soonest, to.getWaitTime(now));
if (soonest == 0)
break;
}
}
return soonest;
}
/**
* @return true if continuing is hopeless
*/
public boolean shouldStop() {
return linkManager.getNumConnections() == 0 && _peers.size() == 0 &&
state.get() != TorrentState.SEEDING;
}
/**
* @return the <tt>BTConnectionFetcher</tt> for this torrent.
*/
public BTConnectionFetcher getFetcher() {
return _connectionFetcher;
}
/**
* @return the <tt>SchedulingThreadPool</tt> executing network-
* related tasks
*/
public ScheduledExecutorService getNetworkScheduledExecutorService() {
return networkInvoker;
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#measureBandwidth()
*/
public void measureBandwidth() {
linkManager.measureBandwidth();
}
/* (non-Javadoc)
* @see com.limegroup.bittorrent.Torrent#getMeasuredBandwidth(boolean)
*/
public float getMeasuredBandwidth(boolean downstream) {
return linkManager.getMeasuredBandwidth(downstream);
}
public int getTriedHostCount() {
return _connectionFetcher.getTriedHostCount();
}
/**
* @return true if this torrent is currently uploading
*/
public boolean isUploading() {
return linkManager.hasUploading();
}
/**
* @return true if this torrent is currently suspended
* A torrent is considered suspended if there are connections interested
* in it but all are choked.
*/
public boolean isSuspended() {
return isComplete() && linkManager.hasInterested() &&
!linkManager.hasUnchoked();
}
}
The table below shows all metrics for ManagedTorrent.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 111.00 | Number of blocks | |
| BLOCK_COMMENT | 48.00 | Number of block comment lines | |
| COMMENTS | 245.00 | Comment lines | |
| COMMENT_DENSITY | 0.46 | Comment density | |
| COMPARISONS | 89.00 | Number of comparison operators | |
| CYCLOMATIC | 180.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 67.00 | Comments in declarations | |
| DOC_COMMENT | 173.00 | Number of javadoc comment lines | |
| ELOC | 528.00 | Effective lines of code | |
| EXEC_COMMENTS | 20.00 | Comments in executable code | |
| EXITS | 127.00 | Procedure exits | |
| FUNCTIONS | 71.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 84.93 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 136.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | 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 | 1.00 | 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 | 4.00 | 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 | 2.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 5.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 61.00 | 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 | 1.00 | 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 | 0.00 | 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 | 13.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 2.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 1.00 | 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 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 1.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 3.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | 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 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | 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 | 1.00 | 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 | 1.00 | 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 | 6.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 1622.00 | 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 | 0.00 | 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 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 1.00 | 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 | 5.00 | 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 | 0.00 | 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 | 1028.00 | Number of lines in the source file | |
| LINE_COMMENT | 24.00 | Number of line comments | |
| LOC | 640.00 | Lines of code | |
| LOGICAL_LINES | 297.00 | Number of statements | |
| LOOPS | 1.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 1192.00 | Number of operands | |
| OPERATORS | 2630.00 | Number of operators | |
| PARAMS | 30.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3822.00 | Halstead program length | |
| PROGRAM_VOCAB | 457.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 106.00 | Number of return points from functions | |
| SIZE | 26637.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 400.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 57.00 | Number of unique operators | |
| WHITESPACE | 143.00 | Number of whitespace lines | |