| 1 | package hostfloor |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "os" |
| 7 | "path/filepath" |
| 8 | "sync" |
| 9 | "testing" |
| 10 | |
| 11 | "github.com/carlosframework/platform/internal/rootparticipation" |
| 12 | ) |
| 13 | |
| 14 | type floorParticipationDisk struct { |
| 15 | dir string |
| 16 | mu sync.Mutex |
| 17 | beforeWrite func(string) |
| 18 | } |
| 19 | |
| 20 | func (d *floorParticipationDisk) Read(n string) ([]byte, error) { |
| 21 | return os.ReadFile(filepath.Join(d.dir, n)) |
| 22 | } |
| 23 | func (d *floorParticipationDisk) Write(n string, b []byte) error { |
| 24 | if d.beforeWrite != nil { |
| 25 | d.beforeWrite(n) |
| 26 | } |
| 27 | return Durable(filepath.Join(d.dir, n), b, 0600) |
| 28 | } |
| 29 | func (d *floorParticipationDisk) Remove(n string) error { |
| 30 | return RemoveDurable(filepath.Join(d.dir, n)) |
| 31 | } |
| 32 | func (d *floorParticipationDisk) Names() ([]string, error) { |
| 33 | entries, err := os.ReadDir(d.dir) |
| 34 | var out []string |
| 35 | for _, e := range entries { |
| 36 | out = append(out, e.Name()) |
| 37 | } |
| 38 | return out, err |
| 39 | } |
| 40 | func (d *floorParticipationDisk) Lock(context.Context, string) (func(), error) { |
| 41 | d.mu.Lock() |
| 42 | return d.mu.Unlock, nil |
| 43 | } |
| 44 | func (d *floorParticipationDisk) Close() error { return nil } |
| 45 | func floorParticipationFixture(t *testing.T) *rootparticipation.Ledger { |
| 46 | t.Helper() |
| 47 | d := &floorParticipationDisk{dir: t.TempDir()} |
| 48 | raw, _ := json.Marshal(rootparticipation.Census{Schema: 1, Box: "box", Enrollment: "en", Migration: 1, Revision: 1, LaunchRevision: 1, Complete: true}) |
| 49 | if err := d.Write("census.json", raw); err != nil { |
| 50 | t.Fatal(err) |
| 51 | } |
| 52 | return &rootparticipation.Ledger{State: d, VerifyLaunches: func(context.Context, uint64) error { return nil }, ExcludeLaunches: func(ctx context.Context, fn func(context.Context) error) error { return fn(ctx) }} |
| 53 | } |
| 54 | |
| 55 | func TestPlan14ExecutionFloorUsesRootCensus(t *testing.T) { |
| 56 | d := Disk{Dir: t.TempDir(), Participation: floorParticipationFixture(t)} |
| 57 | data := t.TempDir() |
| 58 | if err := d.Participation.State.Write("shop.example.json", []byte("{\"Schema\":1,\"Status\":\"lost\"}")); err != nil { |
| 59 | t.Fatal(err) |
| 60 | } |
| 61 | if err := d.Begin(t.Context(), "update", data); err == nil { |
| 62 | t.Fatal("missing agent directory cleared root obligation") |
| 63 | } |
| 64 | if err := d.Participation.State.Remove("shop.example.json"); err != nil { |
| 65 | t.Fatal(err) |
| 66 | } |
| 67 | d.Participation.VerifyLaunches = nil |
| 68 | if err := d.Begin(t.Context(), "update", data); err == nil { |
| 69 | t.Fatal("missing kernel completeness permitted update") |
| 70 | } |
| 71 | d.Participation.VerifyLaunches = func(context.Context, uint64) error { return nil } |
| 72 | if err := d.Begin(t.Context(), "update", data); err != nil { |
| 73 | t.Fatal(err) |
| 74 | } |
| 75 | if err := d.Participation.Acquire(t.Context(), func() error { return nil }); err == nil { |
| 76 | t.Fatal("floor update admitted acquisition") |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | func TestPlan14ExecutionFloorUpdateRace(t *testing.T) { |
| 81 | for _, first := range []string{"acquisition", "update"} { |
| 82 | t.Run(first, func(t *testing.T) { |
| 83 | d := Disk{Dir: t.TempDir(), Participation: floorParticipationFixture(t)} |
| 84 | state := d.Participation.State.(*floorParticipationDisk) |
| 85 | entered, release := make(chan struct{}), make(chan struct{}) |
| 86 | target := "census.json" |
| 87 | if first == "update" { |
| 88 | target = "update.json" |
| 89 | } |
| 90 | var once sync.Once |
| 91 | state.beforeWrite = func(name string) { |
| 92 | if name == target { |
| 93 | once.Do(func() { close(entered); <-release }) |
| 94 | } |
| 95 | } |
| 96 | acquisition := func() error { |
| 97 | return d.Participation.Acquire(t.Context(), func() error { return state.Write("shop.example.json", []byte(`{"Schema":1,"Status":"pending"}`)) }) |
| 98 | } |
| 99 | data := t.TempDir() |
| 100 | update := func() error { return d.Begin(t.Context(), "update", data) } |
| 101 | a, b := acquisition, update |
| 102 | if first == "update" { |
| 103 | a, b = update, acquisition |
| 104 | } |
| 105 | one, two := make(chan error, 1), make(chan error, 1) |
| 106 | go func() { one <- a() }() |
| 107 | <-entered |
| 108 | go func() { two <- b() }() |
| 109 | mirror := filepath.Join(data, ".hostexec") |
| 110 | if err := os.Mkdir(mirror, 0700); err != nil { |
| 111 | t.Fatal(err) |
| 112 | } |
| 113 | if err := os.Remove(mirror); err != nil { |
| 114 | t.Fatal(err) |
| 115 | } |
| 116 | close(release) |
| 117 | if err := <-one; err != nil { |
| 118 | t.Fatal(err) |
| 119 | } |
| 120 | if err := <-two; err == nil { |
| 121 | t.Fatal("floor update and acquisition both admitted") |
| 122 | } |
| 123 | }) |
| 124 | } |
| 125 | } |
| 126 | |
amadan