// 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)
}
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
}
// 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
}