gubatron
commented
4 years ago Seems like what you ask is very particular to what you need, but we could try to implement an AlertListener that's associated to one or more Sha1Hash objects.
interface OnTorrentAlertHandler {
void onAlert(Alert<?> alert);
}
public static final class TorrentFilteredAlertListener implements AlertListener {
private final int[] alertTypes;
private final HashSet<sha1_hash> hashes = new HashSet<>();
private final OnTorrentAlertHandler alertHandler;
public TorrentFilteredAlertListener(int[] alertTypes, OnTorrentAlertHandler alertHandler) {
this.alertTypes = alertTypes; //so that alerts can be filtered by alert type, ideally you pass
this.alertHandler = alertHandler;
}
public void trackTorrent(Sha1Hash torrentSha1) {
hashes.add(torrentSha1.swig());
}
public void stopTrackingTorrent(Sha1Hash torrentSha1) {
hashes.remove(torrentSha1.swig());
}
public void alert(Alert<?> alert) {
torrent_handle th = ((torrent_alert)((TorrentAlert)alert).swig()).getHandle();
if (th != null && th.is_valid() && alertHandler != null && hashes.contains(th.info_hash()) {
try {
alertHandler.onAlert(alert);
} catch (Throwable t) { /* handle exception */ }
}
}You'd then define what to do with the alert by implementing a OnTorrentAlertHandler.
You'd then add a new TorrentFilteredAlertListener as a parameter of the
TorrentFilteredAlertListener torrentListener = new TorrentFilteredAlertListner(types, myOnTorrentAlertHandler);
sessionManager.addListener(torrentListener);
// then if you want to listen to alerts of only one torrent you'd do this:
torrentListener.trackTorrent(torrentHandle.infoHash());
// to stop tracking that torrent's alerts
torrentListener.stopTrackingTorrent(torrentHandle.infoHash());
abbasshah17
While attempting to listen to various alerts on a torrent via
sessionManager.addListener()you get Alerts for all the torrents added through the session manager. Is there a way to simply listen to Alerts from selected torrents?Currently I'm matching the name from each Alert to map to the existing torrents and dispatching these events accordingly. But I'm not happy about it, it adds too much verbosity to the code and feels kinda bad/hacky approach.
If currently there is no way to do that, would it be possible to add it to a future release? And meanwhile would you point me in the correct direction on how to achieve the same effect in a better and more compact way?