| 1 | package applog |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "compress/gzip" |
| 6 | "io" |
| 7 | "testing" |
| 8 | "time" |
| 9 | ) |
| 10 | |
| 11 | func mustGunzip(t *testing.T, b []byte) []byte { |
| 12 | t.Helper() |
| 13 | zr, err := gzip.NewReader(bytes.NewReader(b)) |
| 14 | if err != nil { |
| 15 | t.Fatal(err) |
| 16 | } |
| 17 | out, err := io.ReadAll(zr) |
| 18 | if err != nil { |
| 19 | t.Fatal(err) |
| 20 | } |
| 21 | return out |
| 22 | } |
| 23 | |
| 24 | func mustGzip(t *testing.T, b []byte) []byte { |
| 25 | t.Helper() |
| 26 | var buf bytes.Buffer |
| 27 | zw := gzip.NewWriter(&buf) |
| 28 | if _, err := zw.Write(b); err != nil { |
| 29 | t.Fatal(err) |
| 30 | } |
| 31 | if err := zw.Close(); err != nil { |
| 32 | t.Fatal(err) |
| 33 | } |
| 34 | return buf.Bytes() |
| 35 | } |
| 36 | |
| 37 | func TestKeysAndHourFormat(t *testing.T) { |
| 38 | at := time.Date(2026, 8, 10, 21, 59, 3, 0, time.UTC) |
| 39 | if got := HourOf(at); got != "2026-08-10-21" { |
| 40 | t.Fatalf("HourOf = %q", got) // same vocabulary as metrics' hourFormat |
| 41 | } |
| 42 | if got := must(t)(Prefix("bde", "ledgerpay")); got != "apps/bde/ledgerpay/logs/" { |
| 43 | t.Fatalf("Prefix = %q", got) |
| 44 | } |
| 45 | if got := must(t)(BoxPrefix("bde", "ledgerpay", "box1")); got != "apps/bde/ledgerpay/logs/box1/" { |
| 46 | t.Fatalf("BoxPrefix = %q", got) |
| 47 | } |
| 48 | if got := must(t)(HourPrefix("bde", "ledgerpay", "box1", "2026-08-10-21")); got != "apps/bde/ledgerpay/logs/box1/2026-08-10-21/" { |
| 49 | t.Fatalf("HourPrefix = %q", got) |
| 50 | } |
| 51 | // Zero-padded so lexical order is numeric order; the byte size rides in |
| 52 | // the key so retention can count without a Store interface change. |
| 53 | key := must(t)(ChunkKey("bde", "ledgerpay", "box1", "2026-08-10-21", 41822, 8123)) |
| 54 | if key != "apps/bde/ledgerpay/logs/box1/2026-08-10-21/0000000000041822-8123.jsonl.gz" { |
| 55 | t.Fatalf("ChunkKey = %q", key) |
| 56 | } |
| 57 | if n, ok := ChunkKeySize(key); !ok || n != 8123 { |
| 58 | t.Fatalf("ChunkKeySize = %d, %v", n, ok) |
| 59 | } |
| 60 | for _, bad := range []string{"x/no-size.jsonl.gz", "x/whatever.json", "0000000000041822-8123.jsonl.gz.bak"} { |
| 61 | if _, ok := ChunkKeySize(bad); ok { |
| 62 | t.Errorf("ChunkKeySize(%q) parsed", bad) |
| 63 | } |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | func TestChunkRoundTrip(t *testing.T) { |
| 68 | in := []Record{ |
| 69 | {TS: time.Date(2026, 8, 10, 21, 0, 1, 0, time.UTC), Box: "b1", Host: "h", Stream: StreamApp, Msg: "one", Seq: 1}, |
| 70 | {TS: time.Date(2026, 8, 10, 21, 0, 2, 0, time.UTC), Box: "b1", Stream: StreamPlatform, Level: LevelError, Msg: "two", Seq: 2, Fields: map[string]string{"k": "v"}}, |
| 71 | } |
| 72 | b, err := EncodeChunk(in) |
| 73 | if err != nil { |
| 74 | t.Fatal(err) |
| 75 | } |
| 76 | out, err := DecodeChunk(b) |
| 77 | if err != nil { |
| 78 | t.Fatal(err) |
| 79 | } |
| 80 | if len(out) != 2 || !out[0].TS.Equal(in[0].TS) || out[1].Fields["k"] != "v" || out[1].Seq != 2 { |
| 81 | t.Fatalf("round trip lost data: %+v", out) |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | // TestDecodeChunkSkipsMalformedLines: one corrupt line must not cost the |
| 86 | // member the rest of the hour — decode keeps what parses. |
| 87 | func TestDecodeChunkSkipsMalformedLines(t *testing.T) { |
| 88 | good := []Record{{TS: time.Date(2026, 8, 10, 21, 0, 1, 0, time.UTC), Msg: "ok", Seq: 9}} |
| 89 | b, err := EncodeChunk(good) |
| 90 | if err != nil { |
| 91 | t.Fatal(err) |
| 92 | } |
| 93 | // Splice garbage into the gzip payload by re-encoding by hand. |
| 94 | raw := append([]byte("this is not json\n"), mustGunzip(t, b)...) |
| 95 | out, err := DecodeChunk(mustGzip(t, raw)) |
| 96 | if err != nil { |
| 97 | t.Fatalf("decode failed outright on one bad line: %v", err) |
| 98 | } |
| 99 | if len(out) != 1 || out[0].Msg != "ok" { |
| 100 | t.Fatalf("good line lost: %+v", out) |
| 101 | } |
| 102 | // Truly corrupt gzip IS an error — that's a broken object, not a line. |
| 103 | if _, err := DecodeChunk([]byte("not gzip at all")); err == nil { |
| 104 | t.Fatal("corrupt chunk decoded to no error") |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | func TestHourNameOfDir(t *testing.T) { |
| 109 | for dir, want := range map[string]string{ |
| 110 | "apps/x/y/logs/box/2026-09-07-10/": "2026-09-07-10", |
| 111 | "apps/x/y/logs/box/2026-09-07-10": "2026-09-07-10", |
| 112 | "plain": "plain", |
| 113 | "": "", |
| 114 | } { |
| 115 | if got := HourNameOfDir(dir); got != want { |
| 116 | t.Errorf("HourNameOfDir(%q) = %q, want %q", dir, got, want) |
| 117 | } |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | func TestHourBefore(t *testing.T) { |
| 122 | cutoff := time.Date(2026, 8, 10, 21, 30, 0, 0, time.UTC) |
| 123 | for hour, want := range map[string]bool{ |
| 124 | "2026-08-10-20": true, // strictly before the cutoff's hour |
| 125 | "2026-08-10-21": false, // the cutoff's own hour is live |
| 126 | "2026-08-10-22": false, |
| 127 | "garbage": false, // unparsable never matches — never delete on a guess |
| 128 | } { |
| 129 | if got := HourBefore(hour, cutoff); got != want { |
| 130 | t.Errorf("HourBefore(%q) = %v, want %v", hour, got, want) |
| 131 | } |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | func TestFamilyKeysMirrorLogs(t *testing.T) { |
| 136 | if got, want := must(t)(FamilyPrefix(FamilyLogs, "bab", "web")), must(t)(Prefix("bab", "web")); got != want { |
| 137 | t.Fatalf("FamilyPrefix(logs) = %q, Prefix = %q", got, want) |
| 138 | } |
| 139 | if got, want := must(t)(FamilyChunkKey(FamilyLogs, "bab", "web", "box1", "2026-09-07-10", 42, 7)), must(t)(ChunkKey("bab", "web", "box1", "2026-09-07-10", 42, 7)); got != want { |
| 140 | t.Fatalf("FamilyChunkKey(logs) = %q, ChunkKey = %q", got, want) |
| 141 | } |
| 142 | got := must(t)(FamilyChunkKey(FamilyErrors, "bab", "web", "box1", "2026-09-07-10", 42, 7)) |
| 143 | want := "apps/bab/web/errors/box1/2026-09-07-10/0000000000000042-7.jsonl.gz" |
| 144 | if got != want { |
| 145 | t.Fatalf("errors key = %q, want %q", got, want) |
| 146 | } |
| 147 | if n, ok := ChunkKeySize(got); !ok || n != 7 { |
| 148 | t.Fatalf("ChunkKeySize on an errors key = %d,%v", n, ok) |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | func TestEncodeJSONLRoundTripsAnyShape(t *testing.T) { |
| 153 | type rec struct { |
| 154 | A string `json:"a"` |
| 155 | N int `json:"n,omitempty"` |
| 156 | } |
| 157 | b, err := EncodeJSONL([]rec{{A: "x", N: 1}, {A: "y"}}) |
| 158 | if err != nil { |
| 159 | t.Fatal(err) |
| 160 | } |
| 161 | out, err := DecodeJSONL[rec](b) |
| 162 | if err != nil { |
| 163 | t.Fatal(err) |
| 164 | } |
| 165 | if len(out) != 2 || out[0].A != "x" || out[0].N != 1 || out[1].A != "y" || out[1].N != 0 { |
| 166 | t.Fatalf("round trip = %+v", out) |
| 167 | } |
| 168 | // EncodeChunk must be byte-identical to EncodeJSONL over the same |
| 169 | // records: the logs family's wire shape does not move. |
| 170 | recs := []Record{{TS: time.Date(2026, 9, 7, 10, 0, 0, 0, time.UTC), Msg: "hi", Seq: 1}} |
| 171 | a, _ := EncodeChunk(recs) |
| 172 | c, _ := EncodeJSONL(recs) |
| 173 | da, _ := DecodeChunk(a) |
| 174 | dc, _ := DecodeJSONL[Record](c) |
| 175 | if len(da) != 1 || len(dc) != 1 || da[0].Msg != dc[0].Msg || !da[0].TS.Equal(dc[0].TS) { |
| 176 | t.Fatalf("EncodeChunk and EncodeJSONL disagree: %+v vs %+v", da, dc) |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | // must unwraps a key builder's (key, error) for fixtures whose names are |
| 181 | // known good: must(t)(ChunkKey(...)). |
| 182 | func must(t testing.TB) func(string, error) string { |
| 183 | return func(k string, err error) string { |
| 184 | t.Helper() |
| 185 | if err != nil { |
| 186 | t.Fatal(err) |
| 187 | } |
| 188 | return k |
| 189 | } |
| 190 | } |
| 191 | |
amadan