| 1 | package activator |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "github.com/carlosframework/platform/internal/registry" |
| 7 | "net/http" |
| 8 | "net/http/httptest" |
| 9 | "testing" |
| 10 | "time" |
| 11 | ) |
| 12 | |
| 13 | func TestSeedExclusionWaitsForExistingPreparation(t *testing.T) { |
| 14 | t.Parallel() |
| 15 | for _, kind := range []string{"request", "timer", "stop"} { |
| 16 | t.Run(kind, func(t *testing.T) { |
| 17 | a := &Service{entries: map[string]*actEntry{}} |
| 18 | pending := make(chan struct{}) |
| 19 | switch kind { |
| 20 | case "request": |
| 21 | a.entries["b.example"] = &actEntry{state: actWaking, ready: pending, wakeCancel: func() { t.Error("canceled existing wake") }} |
| 22 | case "timer": |
| 23 | a.tokenPreparations = map[string]chan struct{}{"b.example": pending} |
| 24 | case "stop": |
| 25 | a.entries["b.example"] = &actEntry{state: actStopping, stopped: pending} |
| 26 | } |
| 27 | ctx, cancel := context.WithTimeout(t.Context(), 30*time.Millisecond) |
| 28 | defer cancel() |
| 29 | if _, err := a.AcquireSeedExclusion(ctx, "b.example", nil); !errors.Is(err, context.DeadlineExceeded) { |
| 30 | t.Fatalf("did not wait: %v", err) |
| 31 | } |
| 32 | if a.fences["b.example"] != 0 { |
| 33 | t.Fatal("fenced the existing preparation") |
| 34 | } |
| 35 | a.mu.Lock() |
| 36 | delete(a.entries, "b.example") |
| 37 | delete(a.tokenPreparations, "b.example") |
| 38 | close(pending) |
| 39 | a.mu.Unlock() |
| 40 | token, err := a.AcquireSeedExclusion(t.Context(), "b.example", nil) |
| 41 | if err != nil { |
| 42 | t.Fatal(err) |
| 43 | } |
| 44 | if err := token.Check("b.example"); err != nil { |
| 45 | t.Fatal(err) |
| 46 | } |
| 47 | for _, serve := range []func(http.ResponseWriter, *http.Request, registry.Route, http.Handler) bool{a.ServeHTTP, a.ServeScheduled} { |
| 48 | response := httptest.NewRecorder() |
| 49 | called := false |
| 50 | handled := serve(response, httptest.NewRequest("GET", "http://b.example/", nil), registry.Route{Host: "b.example", Kind: "instance", Hibernate: true}, http.HandlerFunc(func(http.ResponseWriter, *http.Request) { called = true })) |
| 51 | if !handled || response.Code != 503 || called { |
| 52 | t.Fatalf("request escaped exclusion: %v %d %v", handled, response.Code, called) |
| 53 | } |
| 54 | } |
| 55 | if _, err := a.PrepareScheduledToken("b.example", func() (string, error) { t.Fatal("timer entered seed"); return "", nil }); !errors.Is(err, ErrFenced) { |
| 56 | t.Fatal(err) |
| 57 | } |
| 58 | if _, err := a.PrepareScheduledToken("a.example", func() (string, error) { return "ok", nil }); err != nil { |
| 59 | t.Fatal("other host blocked", err) |
| 60 | } |
| 61 | if _, err := a.AcquireSeedExclusion(t.Context(), "b.example", nil); !errors.Is(err, ErrFenceHeld) { |
| 62 | t.Fatal("duplicate accepted", err) |
| 63 | } |
| 64 | again, err := a.AcquireSeedExclusion(t.Context(), "b.example", token) |
| 65 | if err != nil || again != token { |
| 66 | t.Fatal("unsettled owner could not resume", err) |
| 67 | } |
| 68 | if err := token.Release(); err != nil { |
| 69 | t.Fatal(err) |
| 70 | } |
| 71 | if err := token.Check("b.example"); !errors.Is(err, ErrFenceHeld) { |
| 72 | t.Fatal("stale token accepted", err) |
| 73 | } |
| 74 | }) |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | func TestSeedExclusionRefusesForeignFenceAndToken(t *testing.T) { |
| 79 | a := &Service{fences: map[string]uint64{"b.example": 7}} |
| 80 | if _, err := a.AcquireSeedExclusion(t.Context(), "b.example", nil); !errors.Is(err, ErrFenceHeld) { |
| 81 | t.Fatal(err) |
| 82 | } |
| 83 | b := &Service{} |
| 84 | tok, err := b.AcquireSeedExclusion(t.Context(), "b.example", nil) |
| 85 | if err != nil { |
| 86 | t.Fatal(err) |
| 87 | } |
| 88 | if _, err := a.AcquireSeedExclusion(t.Context(), "b.example", tok); !errors.Is(err, ErrFenceHeld) { |
| 89 | t.Fatal(err) |
| 90 | } |
| 91 | if err := tok.Check("a.example"); !errors.Is(err, ErrFenceHeld) { |
| 92 | t.Fatal(err) |
| 93 | } |
| 94 | } |
| 95 | |
amadan