| 1 | package daemon |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "testing" |
| 7 | "time" |
| 8 | ) |
| 9 | |
| 10 | func TestMaintenanceDrainsAndRejectsNewOperations(t *testing.T) { |
| 11 | var gate maintenanceGate |
| 12 | _, finish, err := gate.beginOperation(context.Background()) |
| 13 | if err != nil { |
| 14 | t.Fatal(err) |
| 15 | } |
| 16 | started := make(chan struct{}) |
| 17 | finished := make(chan error, 1) |
| 18 | go func() { |
| 19 | close(started) |
| 20 | _, release, beginErr := gate.beginMaintenance(context.Background()) |
| 21 | if beginErr == nil { |
| 22 | release() |
| 23 | } |
| 24 | finished <- beginErr |
| 25 | }() |
| 26 | <-started |
| 27 | select { |
| 28 | case <-finished: |
| 29 | t.Fatal("maintenance completed before active operation drained" ) |
| 30 | case <-time.After(20 * time.Millisecond): |
| 31 | } |
| 32 | if _, _, err := gate.beginOperation(context.Background()); !errors.Is(err, ErrMaintenance) { |
| 33 | t.Fatalf("new operation error = %v" , err) |
| 34 | } |
| 35 | finish() |
| 36 | select { |
| 37 | case err := <-finished: |
| 38 | if err != nil { |
| 39 | t.Fatal(err) |
| 40 | } |
| 41 | case <-time.After(time.Second): |
| 42 | t.Fatal("maintenance did not acquire after drain" ) |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | func TestMaintenanceCancellationClearsAdmissionFlag(t *testing.T) { |
| 47 | var gate maintenanceGate |
| 48 | _, finish, err := gate.beginOperation(context.Background()) |
| 49 | if err != nil { |
| 50 | t.Fatal(err) |
| 51 | } |
| 52 | ctx, cancel := context.WithCancel(context.Background()) |
| 53 | result := make(chan error, 1) |
| 54 | go func() { |
| 55 | _, _, beginErr := gate.beginMaintenance(ctx) |
| 56 | result <- beginErr |
| 57 | }() |
| 58 | cancel() |
| 59 | if err := <-result; !errors.Is(err, context.Canceled) { |
| 60 | t.Fatalf("maintenance cancellation error = %v" , err) |
| 61 | } |
| 62 | finish() |
| 63 | _, release, err := gate.beginOperation(context.Background()) |
| 64 | if err != nil { |
| 65 | t.Fatalf("operation admission remained blocked: %v" , err) |
| 66 | } |
| 67 | release() |
| 68 | } |
| 69 | |
| 70 | func TestMaintenanceIsExclusiveAndNestedMarkersDoNotDeadlock(t *testing.T) { |
| 71 | var gate maintenanceGate |
| 72 | maintenanceCtx, release, err := gate.beginMaintenance(context.Background()) |
| 73 | if err != nil { |
| 74 | t.Fatal(err) |
| 75 | } |
| 76 | defer release() |
| 77 | if _, nestedRelease, err := gate.beginMaintenance(maintenanceCtx); err != nil { |
| 78 | t.Fatal(err) |
| 79 | } else { |
| 80 | nestedRelease() |
| 81 | } |
| 82 | if _, _, err := gate.beginMaintenance(context.Background()); !errors.Is(err, ErrMaintenanceBusy) { |
| 83 | t.Fatalf("concurrent maintenance error = %v" , err) |
| 84 | } |
| 85 | if _, nestedRelease, err := gate.beginOperation(maintenanceCtx); err != nil { |
| 86 | t.Fatal(err) |
| 87 | } else { |
| 88 | nestedRelease() |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | func TestMaintenanceOperationMarkerAllowsNestedCallbacks(t *testing.T) { |
| 93 | var gate maintenanceGate |
| 94 | ctx, release, err := gate.beginOperation(context.Background()) |
| 95 | if err != nil { |
| 96 | t.Fatal(err) |
| 97 | } |
| 98 | defer release() |
| 99 | nested, nestedRelease, err := gate.beginOperation(ctx) |
| 100 | if err != nil { |
| 101 | t.Fatal(err) |
| 102 | } |
| 103 | nestedRelease() |
| 104 | if nested != ctx { |
| 105 | t.Fatal("nested operation did not preserve context marker" ) |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | func TestClosingPermanentlyRejectsOperationsAndMaintenance(t *testing.T) { |
| 110 | var gate maintenanceGate |
| 111 | gate.markClosing() |
| 112 | if _, _, err := gate.beginOperation(context.Background()); !errors.Is(err, ErrTenantClosing) { |
| 113 | t.Fatalf("closing operation error = %v" , err) |
| 114 | } |
| 115 | if _, _, err := gate.beginMaintenance(context.Background()); !errors.Is(err, ErrTenantClosing) { |
| 116 | t.Fatalf("closing maintenance error = %v" , err) |
| 117 | } |
| 118 | } |