func (b *balancer) processServerList(l *lbpb.ServerList, seq int) {
servers := l.GetServers()
var (
sl []addrInfo
addrs []grpc.Address
)
for _, s := range servers {
// TODO: Support ExpirationInterval
addr := grpc.Address{
Addr: fmt.Sprintf("%s:%d", s.IpAddress, s.Port),
// TODO: include LoadBalanceToken in the Metadata
}
sl = append(sl, addrInfo{
addr: addr,
// TODO: Support dropRequest feature.
})
addrs = append(addrs, addr)
}
b.mu.Lock()
defer b.mu.Unlock()
if b.done || seq < b.seq {
return
}
if len(sl) > 0 {
// reset b.next to 0 when replacing the server list.
b.next = 0
b.addrs = sl
b.addrCh <- addrs
}
return
}
func (b *balancer) processServerList(l *lbpb.ServerList, seq int) {
if l == nil {
return
}
servers := l.GetServers()
expiration := convertDuration(l.GetExpirationInterval())
var (
sl []*addrInfo
addrs []grpc.Address
)
for _, s := range servers {
md := metadata.Pairs("lb-token", s.LoadBalanceToken)
addr := grpc.Address{
Addr: fmt.Sprintf("%s:%d", s.IpAddress, s.Port),
Metadata: &md,
}
sl = append(sl, &addrInfo{
addr: addr,
dropRequest: s.DropRequest,
})
addrs = append(addrs, addr)
}
b.mu.Lock()
defer b.mu.Unlock()
if b.done || seq < b.seq {
return
}
if len(sl) > 0 {
// reset b.next to 0 when replacing the server list.
b.next = 0
b.addrs = sl
b.addrCh <- addrs
if b.expTimer != nil {
b.expTimer.Stop()
b.expTimer = nil
}
if expiration > 0 {
b.expTimer = time.AfterFunc(expiration, func() {
b.serverListExpire(seq)
})
}
}
return
}