package agent import ( "fmt" "net/http" "strings" "time" "github.com/hashicorp/consul/agent/structs" "github.com/hashicorp/consul/types" ) // sessionCreateResponse is used to wrap the session ID type sessionCreateResponse struct { ID string } // SessionCreate is used to create a new session func (s *HTTPServer) SessionCreate(resp http.ResponseWriter, req *http.Request) (interface{}, error) { // Default the session to our node + serf check + release session // invalidate behavior. args := structs.SessionRequest{ Op: structs.SessionCreate, Session: structs.Session{ Node: s.agent.config.NodeName, Checks: []types.CheckID{structs.SerfCheckID}, LockDelay: 15 * time.Second, Behavior: structs.SessionKeysRelease, TTL: "", }, } s.parseDC(req, &args.Datacenter) s.parseToken(req, &args.Token) // Handle optional request body if req.ContentLength > 0 { if err := decodeBody(req.Body, &args.Session); err != nil { resp.WriteHeader(http.StatusBadRequest) fmt.Fprintf(resp, "Request decode failed: %v", err) return nil, nil } } // Create the session, get the ID var out string if err := s.agent.RPC("Session.Apply", &args, &out); err != nil { return nil, err } // Format the response as a JSON object return sessionCreateResponse{out}, nil } // FixupChecks is used to handle parsing the JSON body to default-add the Serf // health check if they didn't specify any checks, but to allow an empty list // to take out the Serf health check. This behavior broke when mapstructure was // updated after 0.9.3, likely because we have a type wrapper around the string. func FixupChecks(raw interface{}, s *structs.Session) error { rawMap, ok := raw.(map[string]interface{}) if !ok { return nil } for k := range rawMap { if strings.ToLower(k) == "checks" { // If they supplied a checks key in the JSON, then // remove the default entries and respect whatever they // specified. s.Checks = nil return nil } } return nil } // SessionDestroy is used to destroy an existing session func (s *HTTPServer) SessionDestroy(resp http.ResponseWriter, req *http.Request) (interface{}, error) { args := structs.SessionRequest{ Op: structs.SessionDestroy, } s.parseDC(req, &args.Datacenter) s.parseToken(req, &args.Token) // Pull out the session id args.Session.ID = strings.TrimPrefix(req.URL.Path, "/v1/session/destroy/") if args.Session.ID == "" { resp.WriteHeader(http.StatusBadRequest) fmt.Fprint(resp, "Missing session") return nil, nil } var out string if err := s.agent.RPC("Session.Apply", &args, &out); err != nil { return nil, err } return true, nil } // SessionRenew is used to renew the TTL on an existing TTL session func (s *HTTPServer) SessionRenew(resp http.ResponseWriter, req *http.Request) (interface{}, error) { args := structs.SessionSpecificRequest{} if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done { return nil, nil } // Pull out the session id args.Session = strings.TrimPrefix(req.URL.Path, "/v1/session/renew/") if args.Session == "" { resp.WriteHeader(http.StatusBadRequest) fmt.Fprint(resp, "Missing session") return nil, nil } var out structs.IndexedSessions if err := s.agent.RPC("Session.Renew", &args, &out); err != nil { return nil, err } else if out.Sessions == nil { resp.WriteHeader(http.StatusNotFound) fmt.Fprintf(resp, "Session id '%s' not found", args.Session) return nil, nil } return out.Sessions, nil } // SessionGet is used to get info for a particular session func (s *HTTPServer) SessionGet(resp http.ResponseWriter, req *http.Request) (interface{}, error) { args := structs.SessionSpecificRequest{} if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done { return nil, nil } // Pull out the session id args.Session = strings.TrimPrefix(req.URL.Path, "/v1/session/info/") if args.Session == "" { resp.WriteHeader(http.StatusBadRequest) fmt.Fprint(resp, "Missing session") return nil, nil } var out structs.IndexedSessions defer setMeta(resp, &out.QueryMeta) if err := s.agent.RPC("Session.Get", &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 } // SessionList is used to list all the sessions func (s *HTTPServer) SessionList(resp http.ResponseWriter, req *http.Request) (interface{}, error) { args := structs.DCSpecificRequest{} if done := s.parse(resp, req, &args.Datacenter, &args.QueryOptions); done { return nil, nil } var out structs.IndexedSessions defer setMeta(resp, &out.QueryMeta) if err := s.agent.RPC("Session.List", &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 } // 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(http.StatusBadRequest) fmt.Fprint(resp, "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 }