func newEtcdClient() (client *etcd.Client) {
maxConnectRetries := 12
for maxConnectRetries > 0 {
if _, _, err := tools.GetEtcdVersion(*etcd_server); err != nil {
log.Fatalf("Failed to connect to etcd server: %v, error: %v", *etcd_server, err)
if maxConnectRetries > 0 {
log.Println("Retrying request after 5 second sleep.")
time.Sleep(5 * time.Second)
maxConnectRetries--
} else {
return nil
}
} else {
log.Printf("Etcd server found: %v", *etcd_server)
break
}
}
client = etcd.NewClient([]string{*etcd_server})
if client == nil {
return nil
}
client.SyncCluster()
return client
}
func newEtcdClient(etcdServer string) (*etcd.Client, error) {
var (
client *etcd.Client
err error
)
for attempt := 1; attempt <= maxConnectAttempts; attempt++ {
if _, err = tools.GetEtcdVersion(etcdServer); err == nil {
break
}
if attempt == maxConnectAttempts {
break
}
glog.Infof("[Attempt: %d] Attempting access to etcd after 5 second sleep", attempt)
time.Sleep(5 * time.Second)
}
if err != nil {
return nil, fmt.Errorf("failed to connect to etcd server: %v, error: %v", etcdServer, err)
}
glog.Infof("Etcd server found: %v", etcdServer)
// loop until we have > 0 machines && machines[0] != ""
poll, timeout := 1*time.Second, 10*time.Second
if err := wait.Poll(poll, timeout, func() (bool, error) {
if client = etcd.NewClient([]string{etcdServer}); client == nil {
return false, fmt.Errorf("etcd.NewClient returned nil")
}
client.SyncCluster()
machines := client.GetCluster()
if len(machines) == 0 || len(machines[0]) == 0 {
return false, nil
}
return true, nil
}); err != nil {
return nil, fmt.Errorf("Timed out after %s waiting for at least 1 synchronized etcd server in the cluster. Error: %v", timeout, err)
}
return client, nil
}