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*: refactor clientv3 balancer, upgrade gRPC to v1.7.2 #8840

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merged 5 commits into from Nov 10, 2017
Merged

*: refactor clientv3 balancer, upgrade gRPC to v1.7.2 #8840

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012b013
clientv3: combine "healthBalancer" and "simpleBalancer"
gyuho Nov 7, 2017
103efd9
clientv3/balancer: only notify healthy addresses
gyuho Nov 10, 2017
123b869
clientv3/integration: match grpc.ErrClientConnClosing in TestKVNewAft…
gyuho Nov 9, 2017
93f12da
vendor: upgrade grpc to v1.7.2
gyuho Nov 10, 2017
c669ff9
clientv3: retry mutable ops on "no connection available"
gyuho Nov 10, 2017
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439 changes: 0 additions & 439 deletions clientv3/balancer.go
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19 changes: 16 additions & 3 deletions clientv3/client.go
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Expand Up @@ -121,6 +121,19 @@ func (c *Client) SetEndpoints(eps ...string) {
c.cfg.Endpoints = eps
c.mu.Unlock()
c.balancer.updateAddrs(eps...)

// updating notifyCh can trigger new connections,
// need update addrs if all connections are down
// or addrs does not include pinAddr.
c.balancer.mu.RLock()
update := !hasAddr(c.balancer.addrs, c.balancer.pinAddr)
c.balancer.mu.RUnlock()
if update {
select {
case c.balancer.updateAddrsC <- notifyNext:
case <-c.balancer.stopc:
}
}
}

// Sync synchronizes client's endpoints with the known endpoints from the etcd membership.
Expand Down Expand Up @@ -378,9 +391,9 @@ func newClient(cfg *Config) (*Client, error) {
client.Password = cfg.Password
}

sb := newSimpleBalancer(cfg.Endpoints)
hc := func(ep string) (bool, error) { return grpcHealthCheck(client, ep) }
client.balancer = newHealthBalancer(sb, cfg.DialTimeout, hc)
client.balancer = newHealthBalancer(cfg.Endpoints, cfg.DialTimeout, func(ep string) (bool, error) {
return grpcHealthCheck(client, ep)
})

// use Endpoints[0] so that for https:// without any tls config given, then
// grpc will assume the certificate server name is the endpoint host.
Expand Down