Golang Node Examples

Example #1

File: swarm.go Project: docker/dockercraft

func (s *DockerServer) nodeUpdate(w http.ResponseWriter, r *http.Request) {
	s.swarmMut.Lock()
	defer s.swarmMut.Unlock()
	if s.swarm == nil {
		w.WriteHeader(http.StatusNotAcceptable)
		return
	}
	id := mux.Vars(r)["id"]
	var n *swarm.Node
	for i := range s.nodes {
		if s.nodes[i].ID == id {
			n = &s.nodes[i]
			break
		}
	}
	if n == nil {
		w.WriteHeader(http.StatusNotFound)
		return
	}
	var spec swarm.NodeSpec
	err := json.NewDecoder(r.Body).Decode(&spec)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	n.Spec = spec
	err = s.runNodeOperation(s.swarmServer.URL(), nodeOperation{
		Op:   "update",
		Node: *n,
	})
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
}

Example #2

File: node.go Project: amitshukla/docker

// NodeFromGRPC converts a grpc Node to a Node.
func NodeFromGRPC(n swarmapi.Node) types.Node {
	node := types.Node{
		ID: n.ID,
		Spec: types.NodeSpec{
			Role:         types.NodeRole(strings.ToLower(n.Spec.Role.String())),
			Membership:   types.NodeMembership(strings.ToLower(n.Spec.Membership.String())),
			Availability: types.NodeAvailability(strings.ToLower(n.Spec.Availability.String())),
		},
		Status: types.NodeStatus{
			State:   types.NodeState(strings.ToLower(n.Status.State.String())),
			Message: n.Status.Message,
		},
	}

	// Meta
	node.Version.Index = n.Meta.Version.Index
	node.CreatedAt, _ = ptypes.Timestamp(n.Meta.CreatedAt)
	node.UpdatedAt, _ = ptypes.Timestamp(n.Meta.UpdatedAt)

	//Annotations
	node.Spec.Name = n.Spec.Annotations.Name
	node.Spec.Labels = n.Spec.Annotations.Labels

	//Description
	if n.Description != nil {
		node.Description.Hostname = n.Description.Hostname
		if n.Description.Platform != nil {
			node.Description.Platform.Architecture = n.Description.Platform.Architecture
			node.Description.Platform.OS = n.Description.Platform.OS
		}
		if n.Description.Resources != nil {
			node.Description.Resources.NanoCPUs = n.Description.Resources.NanoCPUs
			node.Description.Resources.MemoryBytes = n.Description.Resources.MemoryBytes
		}
		if n.Description.Engine != nil {
			node.Description.Engine.EngineVersion = n.Description.Engine.EngineVersion
			node.Description.Engine.Labels = n.Description.Engine.Labels
			for _, plugin := range n.Description.Engine.Plugins {
				node.Description.Engine.Plugins = append(node.Description.Engine.Plugins, types.PluginDescription{Type: plugin.Type, Name: plugin.Name})
			}
		}
	}

	//Manager
	if n.ManagerStatus != nil {
		node.ManagerStatus = &types.ManagerStatus{
			Leader:       n.ManagerStatus.Raft.Status.Leader,
			Reachability: types.Reachability(strings.ToLower(n.ManagerStatus.Raft.Status.Reachability.String())),
			Addr:         n.ManagerStatus.Raft.Addr,
		}
	}

	return node
}