Esempio n. 1
0
// List is used to list the available nodes
func (n *Node) List(args *structs.NodeListRequest,
	reply *structs.NodeListResponse) error {
	if done, err := n.srv.forward("Node.List", args, args, reply); done {
		return err
	}
	defer metrics.MeasureSince([]string{"nomad", "client", "list"}, time.Now())

	// Setup the blocking query
	opts := blockingOptions{
		queryOpts: &args.QueryOptions,
		queryMeta: &reply.QueryMeta,
		watch:     watch.NewItems(watch.Item{Table: "nodes"}),
		run: func() error {
			// Capture all the nodes
			snap, err := n.srv.fsm.State().Snapshot()
			if err != nil {
				return err
			}
			var iter memdb.ResultIterator
			if prefix := args.QueryOptions.Prefix; prefix != "" {
				iter, err = snap.NodesByIDPrefix(prefix)
			} else {
				iter, err = snap.Nodes()
			}
			if err != nil {
				return err
			}

			var nodes []*structs.NodeListStub
			for {
				raw := iter.Next()
				if raw == nil {
					break
				}
				node := raw.(*structs.Node)
				nodes = append(nodes, node.Stub())
			}
			reply.Nodes = nodes

			// Use the last index that affected the jobs 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
		}}
	return n.srv.blockingRPC(&opts)
}
Esempio n. 2
0
func (s *HTTPServer) NodesRequest(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
	if req.Method != "GET" {
		return nil, CodedError(405, ErrInvalidMethod)
	}

	args := structs.NodeListRequest{}
	if s.parse(resp, req, &args.Region, &args.QueryOptions) {
		return nil, nil
	}

	var out structs.NodeListResponse
	if err := s.agent.RPC("Node.List", &args, &out); err != nil {
		return nil, err
	}

	setMeta(resp, &out.QueryMeta)
	if out.Nodes == nil {
		out.Nodes = make([]*structs.NodeListStub, 0)
	}
	return out.Nodes, nil
}
Esempio n. 3
0
// List is used to list the available nodes
func (n *Node) List(args *structs.NodeListRequest,
	reply *structs.NodeListResponse) error {
	if done, err := n.srv.forward("Node.List", args, args, reply); done {
		return err
	}
	defer metrics.MeasureSince([]string{"nomad", "client", "list"}, time.Now())

	// Capture all the nodes
	snap, err := n.srv.fsm.State().Snapshot()
	if err != nil {
		return err
	}
	iter, err := snap.Nodes()
	if err != nil {
		return err
	}

	for {
		raw := iter.Next()
		if raw == nil {
			break
		}
		node := raw.(*structs.Node)
		reply.Nodes = append(reply.Nodes, node.Stub())
	}

	// Use the last index that affected the jobs 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
}