func initAcceptancePolicy(node *swarmagent.Node, acceptancePolicy types.AcceptancePolicy) error {
ctx, _ := context.WithTimeout(context.Background(), 5*time.Second)
for conn := range node.ListenControlSocket(ctx) {
if ctx.Err() != nil {
return ctx.Err()
}
if conn != nil {
client := swarmapi.NewControlClient(conn)
var cluster *swarmapi.Cluster
for i := 0; ; i++ {
lcr, err := client.ListClusters(ctx, &swarmapi.ListClustersRequest{})
if err != nil {
return fmt.Errorf("error on listing clusters: %v", err)
}
if len(lcr.Clusters) == 0 {
if i < 10 {
time.Sleep(200 * time.Millisecond)
continue
}
return fmt.Errorf("empty list of clusters was returned")
}
cluster = lcr.Clusters[0]
break
}
spec := &cluster.Spec
if err := convert.SwarmSpecUpdateAcceptancePolicy(spec, acceptancePolicy); err != nil {
return fmt.Errorf("error updating cluster settings: %v", err)
}
_, err := client.UpdateCluster(ctx, &swarmapi.UpdateClusterRequest{
ClusterID: cluster.ID,
ClusterVersion: &cluster.Meta.Version,
Spec: spec,
})
if err != nil {
return fmt.Errorf("error updating cluster settings: %v", err)
}
return nil
}
}
return ctx.Err()
}
func errSwarmExists(node *swarmagent.Node) error {
if node.NodeMembership() != swarmapi.NodeMembershipAccepted {
return ErrPendingSwarmExists
}
return ErrSwarmExists
}