サンプル
github.com/lmittmann/tint 1.2.0: Pin down the log/slog Handler contract that custom and third-party handlers have to honour
検証済みサンプル — golang github.com/lmittmann/tint 1.2.0: Pin down the log/slog Handler contract that custom and third-party handlers have to honour. go 1.26 …
sha256:6af5bf59ebf30efdf1126ea505e09aa3ffbc7ae1997e37934d4ebacbbdc25dde
このネットワークが提供するのは一つだけです。ビルドされるサンプル。サンドボックスで実行し、署名済みの受領証を保管します。等級はつけず、何も保証しません — 同じコードがあなたの環境でビルドされるかは測定していません。
合格した契約受領証を提出した異なる署名鍵の数です。1 なら作者だけ、2 以上なら他の誰かもビルドしています。鍵は自己生成で背後に登録された身元がないため、数えているのは人ではなく鍵です。
MIT-0
実行証拠
宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。
- 証拠の基準
- 署名済みコントラクト合格
- 検証レシート
- 2
- ビルドした署名鍵
- 2
宣言された環境
go 1.26 linux x64 go 1.26 go go
検証実行環境
| 環境 | コントラクト | ステージ | 実行日 |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:a2ec939a4c60e243 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-14 |
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
ケース
HOW- ゴール
- Pin down the log/slog Handler contract that custom and third-party handlers have to honour
- シンボル
-
- slog.NewJSONHandler
- slog.HandlerOptions.ReplaceAttr
- slog.Logger.WithGroup
- slog.LogValuer
- slog.Handler.Enabled
- tint.NewTextHandler
- tint.NewHandler
- 環境
- go 1.26
- 作成日
- 2026-08-14T12:53:34Z
コントラクト
- assert JSONHandler writes time, level and msg in that order under slog's built-in key constants
- assert the JSON timestamp is RFC3339Nano with a variable-length fraction, while TextHandler and tint pad a time attribute to exactly three digits
- assert a zero Record.Time drops the timestamp field entirely
- assert ReplaceAttr renames the level and message keys and drops a field by returning a zero Attr
- assert a ReplaceAttr without a len(groups) guard renames a user attribute named msg inside a group as well
- assert the guard still cannot protect the built-in msg from a top-level attribute of the same name: the record carries two message keys and the JSON decoder keeps the last
- assert only a zero Attr drops a field, while an empty value or an empty key is still written out
- assert ReplaceAttr is called for the built-ins with no open groups and for a group's contents with the group path, never for the group attr itself
- assert WithGroup nests later attributes, an empty group is omitted, and WithGroup with an empty name is a no-op
- assert JSONHandler ignores fmt.Stringer and json-marshals the struct, while LogValue wins on both handlers
- assert Handler.Enabled is consulted and Handle is skipped when the level is disabled
- assert LogValue does not run for a disabled level but plain call arguments are evaluated anyway, and only an explicit Enabled guard skips them
- assert a LogValuer passed to With is resolved once, at With time, and not again per record
- assert WithAttrs and WithGroup each return a new handler, so a child logger's attrs and open group reach neither the parent nor a sibling
- assert tint follows the same ReplaceAttr, group and LogValuer contract but formats a Stringer with %+v and writes ANSI escapes to a non-terminal unless NoColor is set
- assert tint.NewHandler is the constructor deprecated in v1.2.0 and produces output identical to tint.NewTextHandler
ファイル
- csx.json
- go.mod
- go.sum
- src/logging.go
- test/main.go