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Extract thread safe functions to manipulate Streamer.peers map

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This commit is contained in:
Balint Gabor 2018-01-12 11:14:48 +01:00
parent 3836dd0da5
commit 83b6cc4280
1 changed files with 27 additions and 11 deletions
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38
swarm/network/streamer.go
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@ -306,6 +306,30 @@ func (self *Streamer) Retrieve(chunk *storage.Chunk) error {
return nil
}
func (self *Streamer) getPeer(peerId discover.NodeID) *StreamerPeer {
if self.peers == nil {
return nil
}
self.peersLock.RLock()
defer self.peersLock.RUnlock()
return self.peers[peerId]
}
func (self *Streamer) setPeer(peer *StreamerPeer) {
if self.peers == nil {
self.peers = make(map[discover.NodeID]*StreamerPeer)
}
self.peersLock.Lock()
self.peers[peer.ID()] = peer
self.peersLock.Unlock()
}
func (self *Streamer) deletePeer(peer *StreamerPeer) {
self.peersLock.Lock()
delete(self.peers, peer.ID())
self.peersLock.Unlock()
}
func (self *StreamerPeer) handleChunkDeliveryMsg(req *ChunkDeliveryMsg) error {
chunk, err := self.dbAccess.get(req.Key)
if err != nil {
@ -426,9 +450,7 @@ func (self *Streamer) Subscribe(peerId discover.NodeID, s string, t []byte, from
return err
}
self.peersLock.RLock()
peer := self.peers[peerId]
self.peersLock.RUnlock()
peer := self.getPeer(peerId)
if peer == nil {
return fmt.Errorf("peer not found %v", peerId)
}
@ -630,15 +652,9 @@ func (s *Streamer) Run(p *bzzPeer) error {
// })
// subscribe to request handling ; only with non-light nodes
s.peersLock.Lock()
s.peers[sp.ID()] = sp
s.peersLock.Unlock()
s.setPeer(sp)
defer func() {
s.peersLock.Lock()
delete(s.peers, sp.ID())
s.peersLock.Unlock()
}()
defer s.deletePeer(sp)
s.Subscribe(sp.ID(), retrieveRequestStream, nil, 0, 0, Top, true)
defer close(sp.quit)