| 1 | package console |
| 2 | |
| 3 | import ( |
| 4 | "net/http" |
| 5 | |
| 6 | "github.com/carlosframework/platform/internal/controlname" |
| 7 | "github.com/carlosframework/platform/internal/release" |
| 8 | ) |
| 9 | |
| 10 | // The layout door (isolated-exec design §8.2, plan 5): `carlos system |
| 11 | // layout migrate|revert|status`. POST records the fleet's intent in |
| 12 | // control/layout.json and bumps the serial; every box in scope converges |
| 13 | // on its next serial move. The console moves no file itself: the pass on |
| 14 | // each box does, with the box's own registry as the authority on what is |
| 15 | // eligible, so this door is a request, never an instruction about paths. |
| 16 | // |
| 17 | // GATE: apiSystemRoller, the same as the update and rollback doors. The |
| 18 | // intent moves every tenant's files on the boxes in scope, which is the |
| 19 | // blast radius of a platform update, so it is the same people: an owner of |
| 20 | // the ops account or an address on CARLOS_SYSTEM_OPERATORS. Anyone else |
| 21 | // gets the bare 404 those doors give. Registered through cliRoute with an |
| 22 | // EMPTY role set: no service credential of any role reaches it. |
| 23 | |
| 24 | // apiSystemLayoutResponse is both doors' answer. Mode is "none" when no |
| 25 | // request has ever been recorded; Box is "" for the fleet. |
| 26 | type apiSystemLayoutResponse struct { |
| 27 | Mode string `json:"mode"` |
| 28 | Box string `json:"box"` |
| 29 | ID string `json:"id"` |
| 30 | RequestedAt string `json:"requested_at"` |
| 31 | Force bool `json:"force"` |
| 32 | // Requests is how many requests the log holds. Additive; the CLI |
| 33 | // ignores it today. |
| 34 | Requests int `json:"requests"` |
| 35 | } |
| 36 | |
| 37 | func (s *Server) handleAPISystemLayoutGet(w http.ResponseWriter, r *http.Request) { |
| 38 | if _, _, ok := s.apiSystemRoller(w, r); !ok { |
| 39 | return |
| 40 | } |
| 41 | if !s.systemBucket(w) { |
| 42 | return |
| 43 | } |
| 44 | log, found, err := release.LoadLayoutIntents(r.Context(), s.cfg.Releases) |
| 45 | if err != nil { |
| 46 | jsonError(w, http.StatusBadGateway, "could not read the layout intent: "+err.Error()) |
| 47 | return |
| 48 | } |
| 49 | out := apiSystemLayoutResponse{Mode: "none"} |
| 50 | if found && len(log.Requests) > 0 { |
| 51 | in := log.Requests[len(log.Requests)-1] |
| 52 | out = apiSystemLayoutResponse{Mode: in.Mode, Box: in.Scope.Box, ID: in.ID, RequestedAt: in.RequestedAt, Force: in.Force, Requests: len(log.Requests)} |
| 53 | } |
| 54 | writeJSON(w, http.StatusOK, out) |
| 55 | } |
| 56 | |
| 57 | func (s *Server) handleAPISystemLayoutSet(w http.ResponseWriter, r *http.Request) { |
| 58 | addr, _, ok := s.apiSystemRoller(w, r) |
| 59 | if !ok { |
| 60 | return |
| 61 | } |
| 62 | if !s.systemBucket(w) { |
| 63 | return |
| 64 | } |
| 65 | var in struct { |
| 66 | Mode string `json:"mode"` |
| 67 | Box string `json:"box"` |
| 68 | Force bool `json:"force"` |
| 69 | } |
| 70 | if !readJSONStrictLimit(w, r, &in, 1<<10) { |
| 71 | return |
| 72 | } |
| 73 | if !release.ValidLayoutMode(in.Mode) { |
| 74 | jsonError(w, http.StatusBadRequest, "mode must be nested or flat") |
| 75 | return |
| 76 | } |
| 77 | // The label becomes a scope every box compares its own label against; |
| 78 | // the same shape the fleets doors accept for a box label. |
| 79 | if in.Box != "" && !controlname.ValidLabel(in.Box) { |
| 80 | jsonError(w, http.StatusBadRequest, "box must be a box label") |
| 81 | return |
| 82 | } |
| 83 | // A revert is refused while a maintenance worker is attached to a box |
| 84 | // in scope (#132's interlock): flat tenants would read the worker's |
| 85 | // credential and its private input through /proc the moment they ran |
| 86 | // flat again. |
| 87 | if in.Mode == release.LayoutModeFlat { |
| 88 | if reason := s.layoutRevertBlocked(r.Context(), in.Box); reason != "" { |
| 89 | jsonError(w, http.StatusConflict, reason) |
| 90 | return |
| 91 | } |
| 92 | } |
| 93 | // A migrate is refused while any box in scope runs below the floor |
| 94 | // release (layoutguard.go): a nested row there would never wake. |
| 95 | if in.Mode == release.LayoutModeNested { |
| 96 | if reason := s.layoutMigrateBlocked(r.Context(), in.Box); reason != "" { |
| 97 | jsonError(w, http.StatusConflict, reason) |
| 98 | return |
| 99 | } |
| 100 | } |
| 101 | rec, err := release.RecordLayoutIntent(r.Context(), s.cfg.Releases, in.Mode, in.Box, in.Force) |
| 102 | if err != nil { |
| 103 | jsonError(w, http.StatusBadGateway, err.Error()) |
| 104 | return |
| 105 | } |
| 106 | scope := "the fleet" |
| 107 | if in.Box != "" { |
| 108 | scope = "box " + in.Box |
| 109 | } |
| 110 | detail := "recorded layout " + in.Mode + " for " + scope |
| 111 | if in.Force { |
| 112 | detail += " (force: awake instances are stopped for the move at once)" |
| 113 | } |
| 114 | s.auditSystem(addr, "system-layout", detail) |
| 115 | s.bumpSerial(r.Context()) |
| 116 | writeJSON(w, http.StatusOK, apiSystemLayoutResponse{Mode: rec.Mode, Box: rec.Scope.Box, ID: rec.ID, RequestedAt: rec.RequestedAt, Force: rec.Force}) |
| 117 | } |
| 118 | |
amadan