| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "net/http" |
| 7 | "strconv" |
| 8 | "strings" |
| 9 | "sync/atomic" |
| 10 | "testing" |
| 11 | "time" |
| 12 | |
| 13 | "github.com/carlosframework/platform/internal/registry" |
| 14 | "github.com/carlosframework/platform/internal/schedule" |
| 15 | ) |
| 16 | |
| 17 | func TestSleepingInstanceRearmsItsNextDeliveryBeforeReturning(t *testing.T) { |
| 18 | t.Parallel() |
| 19 | const host = "rearm.bab.oncarlos.com" |
| 20 | const idle = 200 * time.Millisecond |
| 21 | entered := make(chan struct{}, 1) |
| 22 | release := make(chan struct{}) |
| 23 | events := make(chan string, 4) |
| 24 | var calls atomic.Int32 |
| 25 | var reg *registry.Registry |
| 26 | now := time.Now().UTC() |
| 27 | var clock atomic.Int64 |
| 28 | clock.Store(now.UnixNano()) |
| 29 | next := now.Add(time.Hour).Unix() |
| 30 | var firstError atomic.Pointer[error] |
| 31 | var instReg *registry.Registry |
| 32 | instReg, inst, svc, dd := wakeFixture(t, host, idle, func(w http.ResponseWriter, req *http.Request) { |
| 33 | if req.Method != http.MethodPost || req.URL.Path != "/jobs/reminders" || !strings.HasPrefix(req.Header.Get("Authorization"), "Bearer ") { |
| 34 | w.WriteHeader(http.StatusForbidden) |
| 35 | return |
| 36 | } |
| 37 | if calls.Add(1) == 1 { |
| 38 | if err := reg.UpsertTimer(registry.Timer{Host: host, Name: "next-due", Kind: schedule.KindOnce, |
| 39 | Spec: "at " + strconv.FormatInt(next, 10), Path: "/jobs/reminders", NextAt: next, DueAt: next}); err != nil { |
| 40 | firstError.Store(&err) |
| 41 | } |
| 42 | entered <- struct{}{} |
| 43 | <-release |
| 44 | } |
| 45 | w.WriteHeader(http.StatusNoContent) |
| 46 | }) |
| 47 | reg = instReg |
| 48 | t.Cleanup(func() { |
| 49 | select { |
| 50 | case <-release: |
| 51 | default: |
| 52 | close(release) |
| 53 | } |
| 54 | }) |
| 55 | runner := &schedule.Runner{Reg: reg, Deliver: &activatorDeliverer{svc: svc}, Token: scheduleToken(dd, svc, reg), |
| 56 | Now: func() time.Time { return time.Unix(0, clock.Load()) }, Timeout: 10 * time.Second, |
| 57 | Event: func(_ registry.Route, _, msg string) { events <- msg }, |
| 58 | } |
| 59 | due := now.Unix() - 1 |
| 60 | if err := reg.UpsertTimer(registry.Timer{Host: host, Name: "next-due", Kind: schedule.KindOnce, |
| 61 | Spec: fmt.Sprintf("at %d", due), Path: "/jobs/reminders", NextAt: due, DueAt: due}); err != nil { |
| 62 | t.Fatal(err) |
| 63 | } |
| 64 | runner.Tick(context.Background()) |
| 65 | select { |
| 66 | case <-entered: |
| 67 | case <-time.After(10 * time.Second): |
| 68 | t.Fatal("sleeping instance never received its due delivery") |
| 69 | } |
| 70 | if err := firstError.Load(); err != nil { |
| 71 | t.Fatal(*err) |
| 72 | } |
| 73 | time.Sleep(3 * idle) |
| 74 | if !inst.running() || !svc.Owns(host) { |
| 75 | t.Fatal("instance slept while its scheduled handler was still running") |
| 76 | } |
| 77 | close(release) |
| 78 | select { |
| 79 | case <-events: |
| 80 | case <-time.After(10 * time.Second): |
| 81 | t.Fatal("first delivery did not finish") |
| 82 | } |
| 83 | timer, err := reg.GetTimer(host, "next-due") |
| 84 | if err != nil { |
| 85 | t.Fatal(err) |
| 86 | } |
| 87 | if timer.NextAt != next { |
| 88 | t.Fatalf("completion erased the replacement delivery: next_at=%d, want %d", timer.NextAt, next) |
| 89 | } |
| 90 | deadline := time.Now().Add(10 * time.Second) |
| 91 | for inst.running() || svc.Owns(host) { |
| 92 | if time.Now().After(deadline) { |
| 93 | t.Fatal("instance did not hibernate between deliveries") |
| 94 | } |
| 95 | time.Sleep(5 * time.Millisecond) |
| 96 | } |
| 97 | clock.Store(time.Unix(next, 0).UnixNano()) |
| 98 | for calls.Load() < 2 { |
| 99 | runner.Tick(context.Background()) |
| 100 | if time.Now().After(deadline) { |
| 101 | t.Fatal("replacement delivery never woke the instance") |
| 102 | } |
| 103 | time.Sleep(5 * time.Millisecond) |
| 104 | } |
| 105 | select { |
| 106 | case <-events: |
| 107 | case <-time.After(10 * time.Second): |
| 108 | t.Fatal("second delivery did not finish") |
| 109 | } |
| 110 | timer, err = reg.GetTimer(host, "next-due") |
| 111 | if err != nil { |
| 112 | t.Fatal(err) |
| 113 | } |
| 114 | if timer.NextAt != 0 || timer.LastStatus != "204" { |
| 115 | t.Fatalf("second delivery not completed: %+v", timer) |
| 116 | } |
| 117 | if inst.startCount() != 2 { |
| 118 | t.Fatalf("got %d wakes, want 2", inst.startCount()) |
| 119 | } |
| 120 | } |
| 121 | |
amadan