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basic_relayer.go
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basic_relayer.go
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package basicnet
import (
"fmt"
"time"
peer "gx/ipfs/QmZoWKhxUmZ2seW4BzX6fJkNR8hh9PsGModr7q171yq2SS/go-libp2p-peer"
"github.com/golang/glog"
)
//BasicRelayer relays video segments to listners. Unlike BasicBroadcaster, BasicRelayer is
//does NOT have a worker - it sends out the chunks to its listeners as soon as it gets one from the network.
type BasicRelayer struct {
Network *BasicVideoNetwork
UpstreamPeer peer.ID
listeners map[string]*BasicOutStream
LastRelay time.Time
dataCount uint64
}
//RelayStreamData sends a StreamDataMsg to its listeners
func (br *BasicRelayer) RelayStreamData(sd *StreamDataMsg) error {
for strmID, l := range br.listeners {
// glog.V(5).Infof("Relaying stream data to listener: %v", l)
// glog.Infof("Relaying stream data to listener: %v.", peer.IDHexEncode(l.Stream.Conn().RemotePeer()))
if err := br.Network.sendMessageWithRetry(l.Stream.Conn().RemotePeer(), l, StreamDataID, *sd); err != nil {
glog.Errorf("Error writing data to relayer listener %v: %v", l, err)
delete(br.listeners, strmID)
}
br.LastRelay = time.Now()
br.dataCount++
}
return nil
}
func (br *BasicRelayer) RelayFinishStream(nw *BasicVideoNetwork, fs FinishStreamMsg) error {
for strmID, l := range br.listeners {
if err := br.Network.sendMessageWithRetry(l.Stream.Conn().RemotePeer(), l, FinishStreamID, fs); err != nil {
glog.Errorf("Error relaying finish stream to %v: %v", peer.IDHexEncode(l.Stream.Conn().RemotePeer()), err)
delete(br.listeners, strmID)
}
br.LastRelay = time.Now()
}
return nil
}
func (br *BasicRelayer) RelayMasterPlaylistData(nw *BasicVideoNetwork, mpld MasterPlaylistDataMsg) error {
for strmID, l := range br.listeners {
if err := br.Network.sendMessageWithRetry(l.Stream.Conn().RemotePeer(), l, MasterPlaylistDataID, mpld); err != nil {
glog.Errorf("Error relaying master playlist data to %v: %v", peer.IDHexEncode(l.Stream.Conn().RemotePeer()), err)
delete(br.listeners, strmID)
}
br.LastRelay = time.Now()
}
return nil
}
func (br *BasicRelayer) RelayNodeStatusData(nw *BasicVideoNetwork, nsd NodeStatusDataMsg) error {
for id, l := range br.listeners {
if err := br.Network.sendMessageWithRetry(l.Stream.Conn().RemotePeer(), l, NodeStatusDataID, nsd); err != nil {
glog.Errorf("Error relaying node status data to %v: %v", peer.IDHexEncode(l.Stream.Conn().RemotePeer()), err)
delete(br.listeners, id)
}
br.LastRelay = time.Now()
}
return nil
}
func (br *BasicRelayer) AddListener(nw *BasicVideoNetwork, pid peer.ID) {
key := peer.IDHexEncode(pid)
if _, ok := br.listeners[key]; !ok {
br.listeners[key] = nw.NetworkNode.GetOutStream(pid)
}
}
func (br BasicRelayer) String() string {
return fmt.Sprintf("UpstreamPeer: %v, listeners:%v, count:%v", peer.IDHexEncode(br.UpstreamPeer), len(br.listeners), br.dataCount)
}