| 1 | package release |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "crypto/sha256" |
| 6 | "encoding/hex" |
| 7 | "errors" |
| 8 | "os" |
| 9 | "path/filepath" |
| 10 | "strings" |
| 11 | "testing" |
| 12 | ) |
| 13 | |
| 14 | func shaOf(b []byte) string { s := sha256.Sum256(b); return hex.EncodeToString(s[:]) } |
| 15 | |
| 16 | func TestFetchToFileStreamsAndVerifies(t *testing.T) { |
| 17 | ctx := context.Background() |
| 18 | body := []byte(strings.Repeat("carlos", 10000)) |
| 19 | for name, s := range map[string]Store{ |
| 20 | "dir": NewDirStore(t.TempDir()), |
| 21 | "prefix": NewPrefixStore(NewDirStore(t.TempDir()), "fleets/pi/"), |
| 22 | } { |
| 23 | t.Run(name, func(t *testing.T) { |
| 24 | if _, err := s.Put(ctx, "bootstrap/router/v1/carlos-linux-arm64", body, ""); err != nil { |
| 25 | t.Fatal(err) |
| 26 | } |
| 27 | dst := filepath.Join(t.TempDir(), "carlos") |
| 28 | if err := FetchToFile(ctx, s, "bootstrap/router/v1/carlos-linux-arm64", dst, int64(len(body)), shaOf(body)); err != nil { |
| 29 | t.Fatal(err) |
| 30 | } |
| 31 | got, _ := os.ReadFile(dst) |
| 32 | if string(got) != string(body) { |
| 33 | t.Fatal("content differs") |
| 34 | } |
| 35 | if _, err := os.Stat(dst + ".tmp"); !errors.Is(err, os.ErrNotExist) { |
| 36 | t.Fatal("temp file left behind") |
| 37 | } |
| 38 | // One byte over the limit is refused, and nothing is left on disk. |
| 39 | dst2 := filepath.Join(t.TempDir(), "carlos") |
| 40 | if err := FetchToFile(ctx, s, "bootstrap/router/v1/carlos-linux-arm64", dst2, int64(len(body))-1, shaOf(body)); !errors.Is(err, ErrTooLarge) { |
| 41 | t.Fatalf("over-limit err = %v", err) |
| 42 | } |
| 43 | if _, err := os.Stat(dst2); !errors.Is(err, os.ErrNotExist) { |
| 44 | t.Fatal("over-limit fetch left a file") |
| 45 | } |
| 46 | // A sha mismatch is refused and leaves nothing. |
| 47 | dst3 := filepath.Join(t.TempDir(), "carlos") |
| 48 | err := FetchToFile(ctx, s, "bootstrap/router/v1/carlos-linux-arm64", dst3, int64(len(body)), strings.Repeat("0", 64)) |
| 49 | if err == nil || !strings.Contains(err.Error(), "sha256") { |
| 50 | t.Fatalf("mismatch err = %v", err) |
| 51 | } |
| 52 | if _, err := os.Stat(dst3); !errors.Is(err, os.ErrNotExist) { |
| 53 | t.Fatal("mismatch fetch left a file") |
| 54 | } |
| 55 | // Missing key is ErrNotExist. |
| 56 | if err := FetchToFile(ctx, s, "bootstrap/router/v9/carlos-linux-arm64", dst3, 10, shaOf(nil)); !errors.Is(err, os.ErrNotExist) { |
| 57 | t.Fatalf("missing err = %v", err) |
| 58 | } |
| 59 | }) |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | func TestPrefixStoreOpenRebasesTheKey(t *testing.T) { |
| 64 | // prefixStore embeds the Store INTERFACE, so a promoted Open would forward |
| 65 | // the raw key and silently escape the prefix. It must be written out. |
| 66 | ctx := context.Background() |
| 67 | inner := NewDirStore(t.TempDir()) |
| 68 | if _, err := inner.Put(ctx, "fleets/pi/x", []byte("in"), ""); err != nil { |
| 69 | t.Fatal(err) |
| 70 | } |
| 71 | if _, err := inner.Put(ctx, "x", []byte("OUT"), ""); err != nil { |
| 72 | t.Fatal(err) |
| 73 | } |
| 74 | rc, _, err := OpenObject(ctx, NewPrefixStore(inner, "fleets/pi/"), "x") |
| 75 | if err != nil { |
| 76 | t.Fatal(err) |
| 77 | } |
| 78 | defer rc.Close() |
| 79 | b := make([]byte, 8) |
| 80 | n, _ := rc.Read(b) |
| 81 | if string(b[:n]) != "in" { |
| 82 | t.Fatalf("read %q through the prefix, want \"in\"", b[:n]) |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | func TestOpenObjectFallsBackToGet(t *testing.T) { |
| 87 | // A Store that is not an Opener still works: OpenObject buffers via Get. |
| 88 | s := getOnly{NewDirStore(t.TempDir())} |
| 89 | if _, err := s.Put(context.Background(), "k", []byte("v"), ""); err != nil { |
| 90 | t.Fatal(err) |
| 91 | } |
| 92 | rc, _, err := OpenObject(context.Background(), s, "k") |
| 93 | if err != nil { |
| 94 | t.Fatal(err) |
| 95 | } |
| 96 | b := make([]byte, 4) |
| 97 | n, _ := rc.Read(b) |
| 98 | if string(b[:n]) != "v" { |
| 99 | t.Fatalf("got %q", b[:n]) |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | type getOnly struct{ *DirStore } |
| 104 | |
| 105 | func (getOnly) Open() {} // different signature: getOnly is NOT an Opener |
| 106 | |
amadan