func newLedger(p peer.ID) *ledger {
return &ledger{
wantList: wl.New(),
Partner: p,
sentToPeer: make(map[key.Key]time.Time),
}
}
// MessageReceived performs book-keeping. Returns error if passed invalid
// arguments.
func (e *Engine) MessageReceived(p peer.ID, m bsmsg.BitSwapMessage) error {
e.lock.Lock()
defer e.lock.Unlock()
if len(m.Wantlist()) == 0 && len(m.Blocks()) == 0 {
log.Debugf("received empty message from %s", p)
}
newWorkExists := false
defer func() {
if newWorkExists {
e.signalNewWork()
}
}()
l := e.findOrCreate(p)
if m.Full() {
l.wantList = wl.New()
}
for _, entry := range m.Wantlist() {
if entry.Cancel {
log.Debugf("cancel %s", entry.Key)
l.CancelWant(entry.Key)
e.peerRequestQueue.Remove(entry.Key, p)
} else {
log.Debugf("wants %s - %d", entry.Key, entry.Priority)
l.Wants(entry.Key, entry.Priority)
if exists, err := e.bs.Has(entry.Key); err == nil && exists {
e.peerRequestQueue.Push(entry.Entry, p)
newWorkExists = true
}
}
}
for _, block := range m.Blocks() {
log.Debugf("got block %s %d bytes", block.Key(), len(block.Data))
l.ReceivedBytes(len(block.Data))
for _, l := range e.ledgerMap {
if entry, ok := l.WantListContains(block.Key()); ok {
e.peerRequestQueue.Push(entry, l.Partner)
newWorkExists = true
}
}
}
return nil
}