public static Download createFrom(ObjectInputStream in, DownloadManager m) throws IOException {
try {
Hash h = new Hash();
int r = in.read(h.array());
String fn = in.readUTF();
ArrayList<Integer> guids = (ArrayList<Integer>) in.readObject();
if (T.t) {
T.ass(r == h.array().length, "Incorrect length when deserializing download");
}
BlockStorage bs = BlockStorage.getById(m.getCore(), in.readInt());
Download d = new Download(m, h, bs, fn, guids);
d.fd = d.manager.getCore().getFileManager().getFd(h);
return d;
} catch (ClassNotFoundException e) {
throw new IOException("Could not find class while deserializing: " + e);
}
}
public void run() {
// Create a file channel for the file
try {
_parent.addToActive(this);
file = new RandomAccessFile(Globals.ourHome + outFile, "rwd");
channel = file.getChannel();
// Create a segment downloader for each segment and run them simultaneously
for (int i = 0; i < nSeg; i++) {
segDownloads.add(new SegDownloader(this, peers.get(i % peers.size()) + "/" + path, i));
(new Thread(segDownloads.get(segDownloads.size() - 1))).start();
}
// Wait for a download thread to either finish or fail, and update our bookkeeping
try {
while (!done) {
// Get a new segment downloader off the stopped list.
SegDownloader s = bstopped.take();
// Give a new path to every download thread that failed.
if (s.status() == Dstatus.FAILED) {
synchronized (s) {
s.dlPath = getNewPath();
removeStopped(s);
s.notify();
}
}
// Check if that segment finishes off the download.
else if (s.status() == Dstatus.FINISHED) {
if (nSeg == doneSegs) {
done = true;
percentDone = 100;
System.out.println("Download " + Globals.ourHome + outFile + " Finished!");
// "Notify" the waiters that we're done.
while (waiters > 0 && waitToken.take()) {
waiters--;
}
}
} else throw new RuntimeException("Impossible");
}
} catch (InterruptedException e) {
status = Dstatus.FAILED;
}
} catch (IOException e) {
Log.info("Could not open file for download!");
status = Dstatus.FAILED;
} catch (InterruptedException e) {
// TODO Auto-generated catch block
status = Dstatus.FAILED;
}
}