private void startNewDownloads() {
boolean isLimited = true;
int currentAllowedDownloadCount = 0;
{
final int allowedConcurrentDownloads =
Core.frostSettings.getIntValue(SettingsClass.DOWNLOAD_MAX_THREADS);
if (allowedConcurrentDownloads <= 0) {
isLimited = false;
} else {
int runningDownloads = 0;
for (final FrostDownloadItem dlItem : downloadModelItems.values()) {
if (!dlItem.isExternal() && dlItem.getState() == FrostDownloadItem.STATE_PROGRESS) {
runningDownloads++;
}
}
currentAllowedDownloadCount = allowedConcurrentDownloads - runningDownloads;
if (currentAllowedDownloadCount < 0) {
currentAllowedDownloadCount = 0;
}
}
}
{
while (!isLimited || currentAllowedDownloadCount > 0) {
final FrostDownloadItem dlItem =
FileTransferManager.inst().getDownloadManager().selectNextDownloadItem();
if (dlItem == null) {
break;
}
// start the download
if (startDownload(dlItem)) {
currentAllowedDownloadCount--;
}
}
}
}
private void applyPriority(final FrostDownloadItem dlItem, final FcpPersistentGet getReq) {
// apply externally changed priority
if (dlItem.getPriority() != getReq.getPriority()) {
if (Core.frostSettings.getBoolValue(SettingsClass.FCP2_ENFORCE_FROST_PRIO_FILE_DOWNLOAD)) {
// reset priority with our current value
fcpTools.changeRequestPriority(getReq.getIdentifier(), dlItem.getPriority());
} else {
// apply to downloaditem
dlItem.setPriority(getReq.getPriority());
}
}
}
public void persistentRequestError(final String id, final NodeMessage nm) {
if (uploadModelItems.containsKey(id)) {
final FrostUploadItem item = uploadModelItems.get(id);
item.setEnabled(false);
item.setState(FrostUploadItem.STATE_FAILED);
item.setErrorCodeDescription(nm.getStringValue("CodeDescription"));
} else if (downloadModelItems.containsKey(id)) {
final FrostDownloadItem item = downloadModelItems.get(id);
item.setEnabled(false);
item.setState(FrostDownloadItem.STATE_FAILED);
item.setErrorCodeDescription(nm.getStringValue("CodeDescription"));
} else {
System.out.println("persistentRequestError: ID not in any model: " + id);
}
}
public synchronized void appendItemToQueue(final FrostDownloadItem item) {
final String id = item.getGqIdentifier();
directGETsInProgress.add(id);
queue.addLast(item);
notifyAll(); // notify all waiters (if any) of new record
}
/**
* Enqueue a direct GET if not already enqueued, or already downloaded to download dir.
*
* @return true if item was enqueued
*/
public boolean maybeEnqueueDirectGet(
final FrostDownloadItem dlItem, final long expectedFileSize) {
if (!isDirectTransferInProgress(dlItem)) {
final File targetFile = new File(dlItem.getDownloadFilename());
if (!targetFile.isFile() || targetFile.length() != expectedFileSize) {
directTransferQueue.appendItemToQueue(dlItem);
return true;
}
}
return false;
}
private void addExternalItem(final FcpPersistentGet downloadRequest) {
// direct downloads maybe have no filename, use identifier
String fileName = downloadRequest.getFilename();
if (fileName == null) {
fileName = downloadRequest.getIdentifier();
} else if (fileName.indexOf('/') > -1 || fileName.indexOf('\\') > -1) {
// filename contains directories, use only filename
final String stmp = new File(fileName).getName();
if (stmp.length() > 0) {
fileName = stmp; // use plain filename
}
}
final FrostDownloadItem dlItem = new FrostDownloadItem(fileName, downloadRequest.getUri());
dlItem.setExternal(true);
dlItem.setGqIdentifier(downloadRequest.getIdentifier());
dlItem.setState(FrostDownloadItem.STATE_PROGRESS);
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
downloadModel.addExternalItem(dlItem);
}
});
applyState(dlItem, downloadRequest);
}
public boolean startDownload(final FrostDownloadItem dlItem) {
if (dlItem == null || dlItem.getState() != FrostDownloadItem.STATE_WAITING) {
return false;
}
dlItem.setDownloadStartedTime(System.currentTimeMillis());
dlItem.setState(FrostDownloadItem.STATE_PROGRESS);
final String gqid = dlItem.getGqIdentifier();
final File targetFile = new File(dlItem.getDownloadFilename());
boolean isDda =
fcpTools.startPersistentGet(dlItem.getKey(), gqid, targetFile, dlItem.getPriority());
dlItem.setDirect(!isDda);
return true;
}
public void persistentRequestRemoved(final FcpPersistentGet downloadRequest) {
if (downloadModelItems.containsKey(downloadRequest.getIdentifier())) {
final FrostDownloadItem dlItem = downloadModelItems.get(downloadRequest.getIdentifier());
if (dlItem.isExternal()) {
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
List<FrostDownloadItem> itemList = new ArrayList<FrostDownloadItem>();
itemList.add(dlItem);
downloadModel.removeItems(itemList);
}
});
} else {
if (dlItem.isInternalRemoveExpected()) {
dlItem.setInternalRemoveExpected(false); // clear flag
} else if (dlItem.getState() != FrostDownloadItem.STATE_DONE) {
dlItem.setEnabled(false);
dlItem.setState(FrostDownloadItem.STATE_FAILED);
dlItem.setErrorCodeDescription("Disappeared from global queue");
}
}
}
}
/** Must be called after the upload and download model is initialized! */
public PersistenceManager(final UploadModel um, final DownloadModel dm) throws Throwable {
showExternalItemsDownload =
Core.frostSettings.getBoolValue(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_DOWNLOAD);
showExternalItemsUpload =
Core.frostSettings.getBoolValue(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_UPLOAD);
if (FcpHandler.inst().getFreenetNode() == null) {
throw new Exception("No freenet nodes defined");
}
final NodeAddress na = FcpHandler.inst().getFreenetNode();
fcpConn = FcpListenThreadConnection.createInstance(na);
fcpTools = new FcpMultiRequestConnectionFileTransferTools(fcpConn);
Core.frostSettings.addPropertyChangeListener(
new PropertyChangeListener() {
public void propertyChange(final PropertyChangeEvent evt) {
if (evt.getPropertyName().equals(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_DOWNLOAD)) {
showExternalItemsDownload =
Core.frostSettings.getBoolValue(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_DOWNLOAD);
if (showExternalItemsDownload) {
// get external items
showExternalDownloadItems();
}
} else if (evt.getPropertyName().equals(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_UPLOAD)) {
showExternalItemsUpload =
Core.frostSettings.getBoolValue(SettingsClass.GQ_SHOW_EXTERNAL_ITEMS_UPLOAD);
if (showExternalItemsUpload) {
// get external items
showExternalUploadItems();
}
}
}
});
uploadModel = um;
downloadModel = dm;
// initially get all items from model
for (int x = 0; x < uploadModel.getItemCount(); x++) {
final FrostUploadItem ul = (FrostUploadItem) uploadModel.getItemAt(x);
if (ul.getGqIdentifier() != null) {
uploadModelItems.put(ul.getGqIdentifier(), ul);
}
}
for (int x = 0; x < downloadModel.getItemCount(); x++) {
final FrostDownloadItem ul = (FrostDownloadItem) downloadModel.getItemAt(x);
if (ul.getGqIdentifier() != null) {
downloadModelItems.put(ul.getGqIdentifier(), ul);
}
}
// enqueue listeners to keep updated about the model items
uploadModel.addOrderedModelListener(
new SortedModelListener<FrostUploadItem>() {
public void modelCleared() {
for (final FrostUploadItem ul : uploadModelItems.values()) {
if (ul.isExternal() == false) {
fcpTools.removeRequest(ul.getGqIdentifier());
}
}
uploadModelItems.clear();
}
public void itemAdded(final int position, final FrostUploadItem item) {
uploadModelItems.put(item.getGqIdentifier(), item);
if (!item.isExternal()) {
// maybe start immediately
startNewUploads();
}
}
public void itemChanged(final int position, final FrostUploadItem item) {}
public void itemsRemoved(final int[] positions, final List<FrostUploadItem> items) {
for (final FrostUploadItem item : items) {
uploadModelItems.remove(item.getGqIdentifier());
if (item.isExternal() == false) {
fcpTools.removeRequest(item.getGqIdentifier());
}
}
}
});
downloadModel.addOrderedModelListener(
new SortedModelListener<FrostDownloadItem>() {
public void modelCleared() {
for (final FrostDownloadItem ul : downloadModelItems.values()) {
if (ul.isExternal() == false) {
fcpTools.removeRequest(ul.getGqIdentifier());
}
}
downloadModelItems.clear();
}
public void itemAdded(final int position, final FrostDownloadItem item) {
downloadModelItems.put(item.getGqIdentifier(), item);
if (!item.isExternal()) {
// maybe start immediately
startNewDownloads();
}
}
public void itemChanged(final int position, final FrostDownloadItem item) {}
public void itemsRemoved(final int[] positions, final List<FrostDownloadItem> items) {
for (final FrostDownloadItem item : items) {
downloadModelItems.remove(item.getGqIdentifier());
if (item.isExternal() == false) {
fcpTools.removeRequest(item.getGqIdentifier());
}
}
}
});
directTransferQueue = new DirectTransferQueue();
directTransferThread = new DirectTransferThread();
persistentQueue = new FcpPersistentQueue(fcpTools, this);
}
@Override
public void run() {
final int maxAllowedExceptions = 5;
int catchedExceptions = 0;
while (true) {
try {
// if there is no work in queue this call waits for a new queue item
final ModelItem<?> item = directTransferQueue.getItemFromQueue();
if (item == null) {
// paranoia, should never happen
Mixed.wait(5 * 1000);
continue;
}
if (item instanceof FrostUploadItem) {
// transfer bytes to node
final FrostUploadItem ulItem = (FrostUploadItem) item;
// FIXME: provide item, state=Transfer to node, % shows progress
final String gqid = ulItem.getGqIdentifier();
final boolean doMime;
final boolean setTargetFileName;
if (ulItem.isSharedFile()) {
doMime = false;
setTargetFileName = false;
} else {
doMime = true;
setTargetFileName = true;
}
final NodeMessage answer =
fcpTools.startDirectPersistentPut(
gqid,
ulItem.getFile(),
ulItem.getFileName(),
doMime,
setTargetFileName,
ulItem.getCompress(),
ulItem.getFreenetCompatibilityMode(),
ulItem.getPriority());
if (answer == null) {
final String desc = "Could not open a new FCP2 socket for direct put!";
final FcpResultPut result = new FcpResultPut(FcpResultPut.Error, -1, desc, false);
FileTransferManager.inst().getUploadManager().notifyUploadFinished(ulItem, result);
logger.severe(desc);
} else {
// wait for an answer, don't start request again
directPUTsWithoutAnswer.add(gqid);
}
directPUTsInProgress.remove(gqid);
} else if (item instanceof FrostDownloadItem) {
// transfer bytes from node
final FrostDownloadItem dlItem = (FrostDownloadItem) item;
// FIXME: provide item, state=Transfer from node, % shows progress
final String gqid = dlItem.getGqIdentifier();
final File targetFile = new File(dlItem.getDownloadFilename());
final boolean retryNow;
NodeMessage answer = null;
try {
answer = fcpTools.startDirectPersistentGet(gqid, targetFile);
} catch (final FileNotFoundException e) {
final String msg =
"Could not write to " + dlItem.getDownloadFilename() + ": " + e.getMessage();
System.out.println(msg);
logger.severe(msg);
}
if (answer != null) {
final FcpResultGet result = new FcpResultGet(true);
FileTransferManager.inst()
.getDownloadManager()
.notifyDownloadFinished(dlItem, result, targetFile);
retryNow = false;
} else {
logger.severe("Could not open a new fcp socket for direct get!");
final FcpResultGet result = new FcpResultGet(false);
retryNow =
FileTransferManager.inst()
.getDownloadManager()
.notifyDownloadFinished(dlItem, result, targetFile);
}
directGETsInProgress.remove(gqid);
if (retryNow) {
startDownload(dlItem);
}
}
} catch (final Throwable t) {
logger.log(Level.SEVERE, "Exception catched", t);
catchedExceptions++;
}
if (catchedExceptions > maxAllowedExceptions) {
logger.log(Level.SEVERE, "Stopping DirectTransferThread because of too much exceptions");
break;
}
}
}
public boolean isDirectTransferInProgress(final FrostDownloadItem dlItem) {
final String id = dlItem.getGqIdentifier();
return directGETsInProgress.contains(id);
}
/** Apply the states of FcpRequestGet to the FrostDownloadItem. */
private void applyState(final FrostDownloadItem dlItem, final FcpPersistentGet getReq) {
// when cancelled and we expect this, don't set failed; don't even set the old priority!
if (dlItem.isInternalRemoveExpected() && getReq.isFailed()) {
final int returnCode = getReq.getCode();
if (returnCode == 25) {
return;
}
}
applyPriority(dlItem, getReq);
if (dlItem.isDirect() != getReq.isDirect()) {
dlItem.setDirect(getReq.isDirect());
}
if (!getReq.isProgressSet() && !getReq.isSuccess() && !getReq.isFailed()) {
if (dlItem.getState() == FrostDownloadItem.STATE_WAITING) {
dlItem.setState(FrostDownloadItem.STATE_PROGRESS);
}
return;
}
if (getReq.isProgressSet()) {
final int doneBlocks = getReq.getDoneBlocks();
final int requiredBlocks = getReq.getRequiredBlocks();
final int totalBlocks = getReq.getTotalBlocks();
final boolean isFinalized = getReq.isFinalized();
if (totalBlocks > 0) {
dlItem.setDoneBlocks(doneBlocks);
dlItem.setRequiredBlocks(requiredBlocks);
dlItem.setTotalBlocks(totalBlocks);
dlItem.setFinalized(isFinalized);
dlItem.fireValueChanged();
}
if (dlItem.getState() != FrostDownloadItem.STATE_PROGRESS) {
dlItem.setState(FrostDownloadItem.STATE_PROGRESS);
}
}
if (getReq.isSuccess()) {
// maybe progress was not completely sent
dlItem.setFinalized(true);
if (dlItem.getTotalBlocks() > 0 && dlItem.getDoneBlocks() < dlItem.getRequiredBlocks()) {
dlItem.setDoneBlocks(dlItem.getRequiredBlocks());
dlItem.fireValueChanged();
}
if (dlItem.isExternal()) {
dlItem.setFileSize(getReq.getFilesize());
dlItem.setState(FrostDownloadItem.STATE_DONE);
} else {
if (dlItem.isDirect()) {
maybeEnqueueDirectGet(dlItem, getReq.getFilesize());
} else {
final FcpResultGet result = new FcpResultGet(true);
final File targetFile = new File(dlItem.getDownloadFilename());
FileTransferManager.inst()
.getDownloadManager()
.notifyDownloadFinished(dlItem, result, targetFile);
}
}
}
if (getReq.isFailed()) {
final String desc = getReq.getCodeDesc();
if (dlItem.isExternal()) {
dlItem.setState(FrostDownloadItem.STATE_FAILED);
dlItem.setErrorCodeDescription(desc);
} else {
final int returnCode = getReq.getCode();
final boolean isFatal = getReq.isFatal();
final String redirectURI = getReq.getRedirectURI();
final FcpResultGet result = new FcpResultGet(false, returnCode, desc, isFatal, redirectURI);
final File targetFile = new File(dlItem.getDownloadFilename());
final boolean retry =
FileTransferManager.inst()
.getDownloadManager()
.notifyDownloadFinished(dlItem, result, targetFile);
if (retry) {
fcpTools.removeRequest(getReq.getIdentifier());
startDownload(dlItem); // restart immediately
}
}
}
}
/**
* @param dlItem items whose global identifier is to check
* @return true if this item is currently in the global queue, no matter in what state
*/
public boolean isItemInGlobalQueue(final FrostDownloadItem dlItem) {
return persistentQueue.isIdInGlobalQueue(dlItem.getGqIdentifier());
}