func getNode(ctx context.Context, c swarmapi.ControlClient, input string) (*swarmapi.Node, error) {
// GetNode to match via full ID.
rg, err := c.GetNode(ctx, &swarmapi.GetNodeRequest{NodeID: input})
if err != nil {
// If any error (including NotFound), ListNodes to match via full name.
rl, err := c.ListNodes(ctx, &swarmapi.ListNodesRequest{Filters: &swarmapi.ListNodesRequest_Filters{Names: []string{input}}})
if err != nil || len(rl.Nodes) == 0 {
// If any error or 0 result, ListNodes to match via ID prefix.
rl, err = c.ListNodes(ctx, &swarmapi.ListNodesRequest{Filters: &swarmapi.ListNodesRequest_Filters{IDPrefixes: []string{input}}})
}
if err != nil {
return nil, err
}
if len(rl.Nodes) == 0 {
return nil, fmt.Errorf("node %s not found", input)
}
if l := len(rl.Nodes); l > 1 {
return nil, fmt.Errorf("node %s is ambigious (%d matches found)", input, l)
}
return rl.Nodes[0], nil
}
return rg.Node, nil
}
func getNode(ctx context.Context, c api.ControlClient, input string) (*api.Node, error) {
// GetNode to match via full ID.
rg, err := c.GetNode(ctx, &api.GetNodeRequest{NodeID: input})
if err != nil {
// If any error (including NotFound), ListServices to match via full name.
rl, err := c.ListNodes(ctx,
&api.ListNodesRequest{
Filters: &api.ListNodesRequest_Filters{
Names: []string{input},
},
},
)
if err != nil {
return nil, err
}
if len(rl.Nodes) == 0 {
return nil, fmt.Errorf("node %s not found", input)
}
if l := len(rl.Nodes); l > 1 {
return nil, fmt.Errorf("node %s is ambiguous (%d matches found)", input, l)
}
return rl.Nodes[0], nil
}
return rg.Node, nil
}
func managerStats(client swarmapi.ControlClient, currentNodeID string) (current bool, reachable int, unreachable int, err error) {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
nodes, err := client.ListNodes(ctx, &swarmapi.ListNodesRequest{})
if err != nil {
return false, 0, 0, err
}
for _, n := range nodes.Nodes {
if n.ManagerStatus != nil {
if n.ManagerStatus.Reachability == swarmapi.RaftMemberStatus_REACHABLE {
reachable++
if n.ID == currentNodeID {
current = true
}
}
if n.ManagerStatus.Reachability == swarmapi.RaftMemberStatus_UNREACHABLE {
unreachable++
}
}
}
return
}