Ejemplo n.º 1
0
// GetNode is used to request information about a specific node
func (n *Node) GetNode(args *structs.NodeSpecificRequest,
	reply *structs.SingleNodeResponse) error {
	if done, err := n.srv.forward("Node.GetNode", args, args, reply); done {
		return err
	}
	defer metrics.MeasureSince([]string{"nomad", "client", "get_node"}, time.Now())

	// Setup the blocking query
	opts := blockingOptions{
		queryOpts: &args.QueryOptions,
		queryMeta: &reply.QueryMeta,
		watch:     watch.NewItems(watch.Item{Node: args.NodeID}),
		run: func() error {
			// Verify the arguments
			if args.NodeID == "" {
				return fmt.Errorf("missing node ID")
			}

			// Look for the node
			snap, err := n.srv.fsm.State().Snapshot()
			if err != nil {
				return err
			}
			out, err := snap.NodeByID(args.NodeID)
			if err != nil {
				return err
			}

			// Setup the output
			if out != nil {
				// Clear the secret ID
				reply.Node = out.Copy()
				reply.Node.SecretID = ""
				reply.Index = out.ModifyIndex
			} else {
				// Use the last index that affected the nodes table
				index, err := snap.Index("nodes")
				if err != nil {
					return err
				}
				reply.Node = nil
				reply.Index = index
			}

			// Set the query response
			n.srv.setQueryMeta(&reply.QueryMeta)
			return nil
		}}
	return n.srv.blockingRPC(&opts)
}
Ejemplo n.º 2
0
// GetNode is used to request information about a specific node
func (n *Node) GetNode(args *structs.NodeSpecificRequest,
	reply *structs.SingleNodeResponse) error {
	if done, err := n.srv.forward("Node.GetNode", args, args, reply); done {
		return err
	}
	defer metrics.MeasureSince([]string{"nomad", "client", "get_node"}, time.Now())

	// Verify the arguments
	if args.NodeID == "" {
		return fmt.Errorf("missing node ID")
	}

	// Look for the node
	snap, err := n.srv.fsm.State().Snapshot()
	if err != nil {
		return err
	}
	out, err := snap.NodeByID(args.NodeID)
	if err != nil {
		return err
	}

	// Setup the output
	if out != nil {
		reply.Node = out
		reply.Index = out.ModifyIndex
	} else {
		// Use the last index that affected the nodes table
		index, err := snap.Index("nodes")
		if err != nil {
			return err
		}
		reply.Index = index
	}

	// Set the query response
	n.srv.setQueryMeta(&reply.QueryMeta)
	return nil
}