// rebalance removes dead shards from the c.
func (c *Ring) rebalance() {
defer c.mu.Unlock()
c.mu.Lock()
c.hash = consistenthash.New(c.nreplicas, nil)
for name, shard := range c.shards {
if shard.IsUp() {
c.hash.Add(name)
}
}
}
func NewRing(opt *RingOptions) *Ring {
const nreplicas = 100
opt.init()
ring := &Ring{
opt: opt,
nreplicas: nreplicas,
hash: consistenthash.New(nreplicas, nil),
shards: make(map[string]*ringShard),
cmdsInfoOnce: new(sync.Once),
}
ring.cmdable.process = ring.Process
for name, addr := range opt.Addrs {
clopt := opt.clientOptions()
clopt.Addr = addr
ring.addClient(name, NewClient(clopt))
}
go ring.heartbeat()
return ring
}