| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "errors" |
| 7 | "os" |
| 8 | |
| 9 | "github.com/carlosframework/platform/internal/moves" |
| 10 | "github.com/carlosframework/platform/internal/rootparticipation" |
| 11 | ) |
| 12 | |
| 13 | type rootFloorHealthy struct { |
| 14 | Identity rootFloorIdentity |
| 15 | Binary rootFloorBinary |
| 16 | } |
| 17 | |
| 18 | // Only a successful root health gate supplies this observation. A signed file |
| 19 | // alone proves identity, not that the box ever accepted it as healthy. |
| 20 | func (f rootMovesFloors) acceptHealthy(ctx context.Context, b rootFloorBinary) error { |
| 21 | if !b.supports(nil) { |
| 22 | return errRootFloorHistory |
| 23 | } |
| 24 | unlock, err := f.private.Lock(ctx, "floor.lock") |
| 25 | if err != nil { |
| 26 | return err |
| 27 | } |
| 28 | defer unlock() |
| 29 | old, err := f.healthy() |
| 30 | if err != nil { |
| 31 | return err |
| 32 | } |
| 33 | if old != nil { |
| 34 | if at, _ := moves.ReleaseAtOrAbove(old.Version, b.Version); at { |
| 35 | b = *old |
| 36 | } |
| 37 | } |
| 38 | raw, _ := json.Marshal(rootFloorHealthy{Identity: f.identity, Binary: b}) |
| 39 | if err := f.private.Write("healthy.json", raw); err != nil { |
| 40 | return err |
| 41 | } |
| 42 | bound, err := f.localBound() |
| 43 | if err != nil { |
| 44 | return err |
| 45 | } |
| 46 | // A healthy observation never acknowledges a bound the observed build cannot meet. |
| 47 | if !b.supports(bound) { |
| 48 | return nil |
| 49 | } |
| 50 | generation := uint64(1) |
| 51 | if r, err := f.record(rootFloorAccepted); err == nil { |
| 52 | generation = r.Generation + 1 |
| 53 | } |
| 54 | r := rootFloorRecord{Schema: 1, Identity: f.identity, Generation: generation, Floor: bound, NeverArmed: bound == nil, |
| 55 | Provenance: rootFloorReconstruction{Identity: f.identity, Source: "root health gate", Digest: b.Digest, Floor: bound, NeverArmed: bound == nil}} |
| 56 | return f.persist(r, bound, true) |
| 57 | } |
| 58 | func (f rootMovesFloors) healthy() (*rootFloorBinary, error) { |
| 59 | raw, err := f.private.Read("healthy.json") |
| 60 | if errors.Is(err, os.ErrNotExist) { |
| 61 | return nil, nil |
| 62 | } |
| 63 | if err != nil { |
| 64 | return nil, err |
| 65 | } |
| 66 | var h rootFloorHealthy |
| 67 | if rootparticipation.Decode(raw, &h) != nil || h.Identity != f.identity || !h.Binary.supports(nil) { |
| 68 | return nil, nil |
| 69 | } |
| 70 | return &h.Binary, nil |
| 71 | } |
| 72 | func (f rootMovesFloors) capLegacy(legacy []*moves.Floor) ([]*moves.Floor, error) { |
| 73 | h, err := f.healthy() |
| 74 | if err != nil || h == nil { |
| 75 | return nil, err |
| 76 | } |
| 77 | out := make([]*moves.Floor, 0, len(legacy)) |
| 78 | for _, fl := range legacy { |
| 79 | if !validRootFloor(fl) { |
| 80 | continue |
| 81 | } |
| 82 | c := *fl |
| 83 | if c.Min > h.Protocol { |
| 84 | c.Min = h.Protocol |
| 85 | } |
| 86 | if at, _ := moves.ReleaseAtOrAbove(c.MinRelease, h.Version); at { |
| 87 | c.MinRelease = h.Version |
| 88 | } |
| 89 | if validRootFloor(&c) { |
| 90 | out = append(out, &c) |
| 91 | } |
| 92 | } |
| 93 | return out, nil |
| 94 | } |
| 95 | func (a *systemApplier) acceptRootFloorHealthy(ctx context.Context) error { |
| 96 | id, required, err := a.rootMoves.read() |
| 97 | if err != nil || !required { |
| 98 | return err |
| 99 | } |
| 100 | b, err := readRootFloorBinary(a.optDir, systemBinaryPath(a.optDir)) |
| 101 | if err != nil { |
| 102 | return err |
| 103 | } |
| 104 | f, err := openRootMovesFloors(a.optDir, id, true) |
| 105 | if err != nil { |
| 106 | return err |
| 107 | } |
| 108 | defer f.close() |
| 109 | if err := f.acceptHealthy(ctx, b); err != nil { |
| 110 | return err |
| 111 | } |
| 112 | bound, err := readRootSeedsBound(a.optDir, id) |
| 113 | if err != nil || bound == nil { |
| 114 | return err |
| 115 | } |
| 116 | seeds, err := openRootProtocolFloors(rootSeedsFloorDir(a.optDir), id, true) |
| 117 | if err != nil { |
| 118 | return err |
| 119 | } |
| 120 | defer seeds.close() |
| 121 | return seeds.acceptHealthy(ctx, b.forSeeds()) |
| 122 | } |
| 123 | |
amadan