Пример #1
0
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
}
Пример #2
0
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
}
Пример #3
0
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
}