| 1 | package host |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "net/http" |
| 7 | "net/http/httptest" |
| 8 | "os" |
| 9 | "path/filepath" |
| 10 | "strings" |
| 11 | "testing" |
| 12 | "time" |
| 13 | |
| 14 | "github.com/carlosframework/platform/internal/activator" |
| 15 | "github.com/carlosframework/platform/internal/hostfiles" |
| 16 | "github.com/carlosframework/platform/internal/instancekey" |
| 17 | "github.com/carlosframework/platform/internal/registry" |
| 18 | "github.com/carlosframework/platform/internal/release" |
| 19 | ) |
| 20 | |
| 21 | // Ruling 22 (R-C): an adoption is published by the running session's |
| 22 | // publisher, with no admission or release after it. The box is then lost: |
| 23 | // every process and every local file is gone. The data bucket's manifest |
| 24 | // for the session's generation still holds the record, bound to the |
| 25 | // session's writer, which is what O2' pins. |
| 26 | func TestAdoptionSurvivesBoxLossWithoutAnotherAdmissionOrRelease(t *testing.T) { |
| 27 | t.Parallel() |
| 28 | ctx, cancel := context.WithCancel(context.Background()) |
| 29 | defer cancel() |
| 30 | data := release.NewDirStore(t.TempDir()) |
| 31 | writer := instancekey.Binding{Host: "shop.example.com", Incarnation: "inc-1", Session: 3, Generation: "g3"} |
| 32 | prefix := "instances/" + writer.Host + "/" + writer.Incarnation + "/files/" + writer.Generation + "/" |
| 33 | pub, err := hostfiles.Open(ctx, data, prefix) |
| 34 | if err != nil { |
| 35 | t.Fatal(err) |
| 36 | } |
| 37 | box := t.TempDir() |
| 38 | filesDir, envDir := filepath.Join(box, "files"), filepath.Join(box, "env") |
| 39 | for _, d := range []string{filesDir, envDir} { |
| 40 | if err := os.MkdirAll(d, 0o700); err != nil { |
| 41 | t.Fatal(err) |
| 42 | } |
| 43 | } |
| 44 | // The session's continuous publisher and the adoption relay. |
| 45 | running := make(chan error, 2) |
| 46 | go func() { |
| 47 | running <- hostfiles.Run(ctx, pub, filesDir, hostfiles.Options{Deadline: 40 * time.Millisecond, Scan: time.Minute, Poll: 40 * time.Millisecond}) |
| 48 | }() |
| 49 | relay := &hostfiles.PlatformRelay{Name: instancekey.AdoptionItem, Stage: pub, Retry: 10 * time.Millisecond} |
| 50 | go func() { running <- relay.Run(ctx) }() |
| 51 | |
| 52 | key := strings.Repeat("K", 43) + "=" |
| 53 | tok := strings.Repeat("f", 64) |
| 54 | launch := activator.AdoptionLaunch{Writer: writer, KeySHA256: instancekey.Digest(key), Source: instancekey.SourcePlatform, Dir: envDir, Publish: relay.Publish} |
| 55 | mux := http.NewServeMux() |
| 56 | (&activator.ExecBackend{}).MountInstanceKeyAdoption(mux, registry.Route{Host: writer.Host, Kind: "instance"}, |
| 57 | func() (string, error) { return tok, nil }, func() (activator.AdoptionLaunch, bool) { return launch, true }) |
| 58 | req := httptest.NewRequest(http.MethodPut, "/instance-key/adoption", strings.NewReader(`{"sha256":"`+instancekey.Digest(key)+`","source":"platform"}`)) |
| 59 | req.Header.Set("Authorization", "Bearer "+tok) |
| 60 | w := httptest.NewRecorder() |
| 61 | mux.ServeHTTP(w, req) |
| 62 | if w.Code != http.StatusNoContent { |
| 63 | t.Fatalf("adoption = %d, want 204", w.Code) |
| 64 | } |
| 65 | |
| 66 | // Within the publisher's continuous bound the record is committed. |
| 67 | readRecord := func() ([]byte, error) { |
| 68 | raw, _, err := data.Get(context.Background(), hostfiles.ManifestKey(prefix)) |
| 69 | if err != nil { |
| 70 | return nil, err |
| 71 | } |
| 72 | var m hostfiles.Manifest |
| 73 | if err := json.Unmarshal(raw, &m); err != nil { |
| 74 | return nil, err |
| 75 | } |
| 76 | return hostfiles.ReadPlatform(context.Background(), data, prefix, m, instancekey.AdoptionItem, nil) |
| 77 | } |
| 78 | deadline := time.Now().Add(2 * time.Second) |
| 79 | for { |
| 80 | if _, err := readRecord(); err == nil { |
| 81 | break |
| 82 | } |
| 83 | if time.Now().After(deadline) { |
| 84 | t.Fatal("the adoption was not published within the continuous bound") |
| 85 | } |
| 86 | time.Sleep(10 * time.Millisecond) |
| 87 | } |
| 88 | |
| 89 | // Box loss: the processes stop and the disk is gone. |
| 90 | cancel() |
| 91 | <-running |
| 92 | <-running |
| 93 | if err := os.RemoveAll(box); err != nil { |
| 94 | t.Fatal(err) |
| 95 | } |
| 96 | rec, err := readRecord() |
| 97 | if err != nil { |
| 98 | t.Fatalf("after box loss: %v", err) |
| 99 | } |
| 100 | a, err := instancekey.ParseAdoption(rec) |
| 101 | if err != nil || !a.Binds(writer) || a.SHA256 != instancekey.Digest(key) || a.Source != instancekey.SourcePlatform { |
| 102 | t.Fatalf("after box loss the bucket holds %+v (%v), want the session's record", a, err) |
| 103 | } |
| 104 | } |
| 105 | |
amadan