Golang models.Announce類代碼示例

// handleEvent checks to see whether an announce has an event and if it does,
// properly handles that event.
func (tkr *Tracker) handleEvent(ann *models.Announce) (snatched bool, err error) {
	var snatchedv4, snatchedv6 bool

	if ann.HasIPv4() {
		snatchedv4, err = tkr.handlePeerEvent(ann, ann.PeerV4)
		if err != nil {
			return
		}
	}
	if ann.HasIPv6() {
		snatchedv6, err = tkr.handlePeerEvent(ann, ann.PeerV6)
		if err != nil {
			return
		}
	}

	if snatchedv4 || snatchedv6 {
		err = tkr.IncrementTorrentSnatches(ann.Torrent.Infohash)
		if err != nil {
			return
		}
		ann.Torrent.Snatches++
		return true, nil
	}
	return false, nil
}

// HandleAnnounce encapsulates all of the logic of handling a BitTorrent
// client's Announce without being coupled to any transport protocol.
func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) (err error) {
	if tkr.Config.ClientWhitelistEnabled {
		if err = tkr.ClientApproved(ann.ClientID()); err != nil {
			return err
		}
	}

	if tkr.Config.JWKSetURI != "" {
		err := tkr.validateJWT(ann.JWT, ann.Infohash)
		if err != nil {
			return err
		}
	}

	torrent, err := tkr.FindTorrent(ann.Infohash)
	if err == models.ErrTorrentDNE && tkr.Config.CreateOnAnnounce {
		torrent = &models.Torrent{
			Infohash: ann.Infohash,
			Seeders:  models.NewPeerMap(true, tkr.Config),
			Leechers: models.NewPeerMap(false, tkr.Config),
		}

		tkr.PutTorrent(torrent)
		stats.RecordEvent(stats.NewTorrent)
	} else if err != nil {
		return err
	}

	ann.BuildPeer(torrent)

	_, err = tkr.updateSwarm(ann)
	if err != nil {
		return err
	}

	_, err = tkr.handleEvent(ann)
	if err != nil {
		return err
	}

	if tkr.Config.PurgeInactiveTorrents && torrent.PeerCount() == 0 {
		// Rather than deleting the torrent explicitly, let the tracker driver
		// ensure there are no race conditions.
		tkr.PurgeInactiveTorrent(torrent.Infohash)
		stats.RecordEvent(stats.DeletedTorrent)
	}

	stats.RecordEvent(stats.Announce)
	return w.WriteAnnounce(newAnnounceResponse(ann))
}

// updateSwarm handles the changes to a torrent's swarm given an announce.
func (tkr *Tracker) updateSwarm(ann *models.Announce) (created bool, err error) {
	var createdv4, createdv6 bool
	tkr.TouchTorrent(ann.Torrent.Infohash)

	if ann.HasIPv4() {
		createdv4, err = tkr.updatePeer(ann, ann.PeerV4)
		if err != nil {
			return
		}
	}
	if ann.HasIPv6() {
		createdv6, err = tkr.updatePeer(ann, ann.PeerV6)
		if err != nil {
			return
		}
	}

	return createdv4 || createdv6, nil
}

// HandleAnnounce encapsulates all of the logic of handling a BitTorrent
// client's Announce without being coupled to any transport protocol.
func (tkr *Tracker) HandleAnnounce(ann *models.Announce, w Writer) (err error) {
	if tkr.Config.ClientWhitelistEnabled {
		if err = tkr.ClientApproved(ann.ClientID()); err != nil {
			return err
		}
	}

	var user *models.User
	if tkr.Config.PrivateEnabled {
		if user, err = tkr.FindUser(ann.Passkey); err != nil {
			return err
		}
	}

	torrent, err := tkr.FindTorrent(ann.Infohash)

	if err == models.ErrTorrentDNE && tkr.Config.CreateOnAnnounce {
		torrent = &models.Torrent{
			Infohash: ann.Infohash,
			Seeders:  models.NewPeerMap(true, tkr.Config),
			Leechers: models.NewPeerMap(false, tkr.Config),
		}

		tkr.PutTorrent(torrent)
		stats.RecordEvent(stats.NewTorrent)
	} else if err != nil {
		return err
	}

	ann.BuildPeer(user, torrent)
	var delta *models.AnnounceDelta

	if tkr.Config.PrivateEnabled {
		delta = newAnnounceDelta(ann, torrent)
	}

	created, err := tkr.updateSwarm(ann)
	if err != nil {
		return err
	}

	snatched, err := tkr.handleEvent(ann)
	if err != nil {
		return err
	}

	if tkr.Config.PrivateEnabled {
		delta.Created = created
		delta.Snatched = snatched
		if err = tkr.Backend.RecordAnnounce(delta); err != nil {
			return err
		}
	} else if tkr.Config.PurgeInactiveTorrents && torrent.PeerCount() == 0 {
		// Rather than deleting the torrent explicitly, let the tracker driver
		// ensure there are no race conditions.
		tkr.PurgeInactiveTorrent(torrent.Infohash)
		stats.RecordEvent(stats.DeletedTorrent)
	}

	stats.RecordEvent(stats.Announce)
	return w.WriteAnnounce(newAnnounceResponse(ann))
}