// SessionsForNode returns all the nodes belonging to a node
func (s *HTTPServer) SessionsForNode(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
args := structs.NodeSpecificRequest{}
if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
return nil, nil
}
// Pull out the node name
args.Node = strings.TrimPrefix(req.URL.Path, "/v1/session/node/")
if args.Node == "" {
resp.WriteHeader(400)
resp.Write([]byte("Missing node name"))
return nil, nil
}
var out structs.IndexedSessions
defer setMeta(resp, &out.QueryMeta)
if err := s.agent.RPC("Session.NodeSessions", &args, &out); err != nil {
return nil, err
}
// Use empty list instead of nil
if out.Sessions == nil {
out.Sessions = make(structs.Sessions, 0)
}
return out.Sessions, nil
}
// UINodeInfo is used to get info on a single node in a given datacenter. We return a
// NodeInfo which provides overview information for the node
func (s *HTTPServer) UINodeInfo(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
// Parse arguments
args := structs.NodeSpecificRequest{}
if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
return nil, nil
}
// Verify we have some DC, or use the default
args.Node = strings.TrimPrefix(req.URL.Path, "/v1/internal/ui/node/")
if args.Node == "" {
resp.WriteHeader(400)
resp.Write([]byte("Missing node name"))
return nil, nil
}
// Make the RPC request
var out structs.IndexedNodeDump
defer setMeta(resp, &out.QueryMeta)
RPC:
if err := s.agent.RPC("Internal.NodeInfo", &args, &out); err != nil {
// Retry the request allowing stale data if no leader
if strings.Contains(err.Error(), structs.ErrNoLeader.Error()) && !args.AllowStale {
args.AllowStale = true
goto RPC
}
return nil, err
}
// Return only the first entry
if len(out.Dump) > 0 {
return out.Dump[0], nil
}
return nil, nil
}
func (s *HTTPServer) CatalogNodeServices(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
// Set default Datacenter
args := structs.NodeSpecificRequest{}
if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
return nil, nil
}
// Pull out the node name
args.Node = strings.TrimPrefix(req.URL.Path, "/v1/catalog/node/")
if args.Node == "" {
resp.WriteHeader(400)
resp.Write([]byte("Missing node name"))
return nil, nil
}
// Make the RPC request
var out structs.IndexedNodeServices
defer setMeta(resp, &out.QueryMeta)
if err := s.agent.RPC("Catalog.NodeServices", &args, &out); err != nil {
return nil, err
}
if out.NodeServices != nil && out.NodeServices.Node != nil {
translateAddresses(s.agent.config, args.Datacenter, out.NodeServices.Node)
}
return out.NodeServices, nil
}
func (s *HTTPServer) HealthNodeChecks(resp http.ResponseWriter, req *http.Request) (interface{}, error) {
// Set default DC
args := structs.NodeSpecificRequest{}
if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done {
return nil, nil
}
// Pull out the service name
args.Node = strings.TrimPrefix(req.URL.Path, "/v1/health/node/")
if args.Node == "" {
resp.WriteHeader(400)
resp.Write([]byte("Missing node name"))
return nil, nil
}
// Make the RPC request
var out structs.IndexedHealthChecks
defer setMeta(resp, &out.QueryMeta)
if err := s.agent.RPC("Health.NodeChecks", &args, &out); err != nil {
return nil, err
}
// Use empty list instead of nil
if out.HealthChecks == nil {
out.HealthChecks = make(structs.HealthChecks, 0)
}
return out.HealthChecks, nil
}
func (s *HTTPServer) HealthNodeChecks(resp http.ResponseWriter, req *http.Request) (uint64, interface{}, error) {
// Set default DC
args := structs.NodeSpecificRequest{}
if done := s.parse(resp, req, &args.Datacenter, &args.BlockingQuery); done {
return 0, nil, nil
}
// Pull out the service name
args.Node = strings.TrimPrefix(req.URL.Path, "/v1/health/node/")
if args.Node == "" {
resp.WriteHeader(400)
resp.Write([]byte("Missing node name"))
return 0, nil, nil
}
// Make the RPC request
var out structs.IndexedHealthChecks
if err := s.agent.RPC("Health.NodeChecks", &args, &out); err != nil {
return 0, nil, err
}
return out.Index, out.HealthChecks, nil
}
func TestCatalog_NodeServices_ACLDeny(t *testing.T) {
dir1, s1 := testServerWithConfig(t, func(c *Config) {
c.ACLDatacenter = "dc1"
c.ACLMasterToken = "root"
c.ACLDefaultPolicy = "deny"
c.ACLEnforceVersion8 = false
})
defer os.RemoveAll(dir1)
defer s1.Shutdown()
codec := rpcClient(t, s1)
defer codec.Close()
testutil.WaitForLeader(t, s1.RPC, "dc1")
// Prior to version 8, the node policy should be ignored.
args := structs.NodeSpecificRequest{
Datacenter: "dc1",
Node: s1.config.NodeName,
}
reply := structs.IndexedNodeServices{}
if err := msgpackrpc.CallWithCodec(codec, "Catalog.NodeServices", &args, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if reply.NodeServices == nil {
t.Fatalf("should not be nil")
}
// Now turn on version 8 enforcement and try again.
s1.config.ACLEnforceVersion8 = true
if err := msgpackrpc.CallWithCodec(codec, "Catalog.NodeServices", &args, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if reply.NodeServices != nil {
t.Fatalf("should not nil")
}
// Create an ACL that can read the node.
arg := structs.ACLRequest{
Datacenter: "dc1",
Op: structs.ACLSet,
ACL: structs.ACL{
Name: "User token",
Type: structs.ACLTypeClient,
Rules: fmt.Sprintf(`
node "%s" {
policy = "read"
}
`, s1.config.NodeName),
},
WriteRequest: structs.WriteRequest{Token: "root"},
}
var id string
if err := msgpackrpc.CallWithCodec(codec, "ACL.Apply", &arg, &id); err != nil {
t.Fatalf("err: %v", err)
}
// Now try with the token and it will go through.
args.Token = id
if err := msgpackrpc.CallWithCodec(codec, "Catalog.NodeServices", &args, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if reply.NodeServices == nil {
t.Fatalf("should not be nil")
}
// Make sure an unknown node doesn't cause trouble.
args.Node = "nope"
if err := msgpackrpc.CallWithCodec(codec, "Catalog.NodeServices", &args, &reply); err != nil {
t.Fatalf("err: %v", err)
}
if reply.NodeServices != nil {
t.Fatalf("should not nil")
}
}