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etcdserver: protect the sender map in SendHub

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This commit is contained in:
Yicheng Qin 2014-12-14 10:00:01 +08:00
parent 5f16fab541
commit ceb077424d
1 changed files with 13 additions and 1 deletions
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14
etcdserver/sendhub.go
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@ -21,6 +21,7 @@ import (
"net/http"
"net/url"
"path"
"sync"
"github.com/coreos/etcd/etcdserver/stats"
"github.com/coreos/etcd/pkg/types"
@ -48,6 +49,7 @@ type sendHub struct {
p rafthttp.Processor
ss *stats.ServerStats
ls *stats.LeaderStats
mu sync.RWMutex // protect the sender map
senders map[types.ID]rafthttp.Sender
shouldstop chan struct{}
}
@ -67,7 +69,11 @@ func newSendHub(t http.RoundTripper, cl ClusterInfo, p rafthttp.Processor, ss *s
}
}
func (h *sendHub) Sender(id types.ID) rafthttp.Sender { return h.senders[id] }
func (h *sendHub) Sender(id types.ID) rafthttp.Sender {
h.mu.RLock()
defer h.mu.RUnlock()
return h.senders[id]
}
func (h *sendHub) Send(msgs []raftpb.Message) {
for _, m := range msgs {
@ -102,6 +108,8 @@ func (h *sendHub) ShouldStopNotify() <-chan struct{} {
}
func (h *sendHub) Add(m *Member) {
h.mu.Lock()
defer h.mu.Unlock()
if _, ok := h.senders[m.ID]; ok {
return
}
@ -118,11 +126,15 @@ func (h *sendHub) Add(m *Member) {
}
func (h *sendHub) Remove(id types.ID) {
h.mu.Lock()
defer h.mu.Unlock()
h.senders[id].Stop()
delete(h.senders, id)
}
func (h *sendHub) Update(m *Member) {
h.mu.Lock()
defer h.mu.Unlock()
// TODO: return error or just panic?
if _, ok := h.senders[m.ID]; !ok {
return