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 }