type slogHandler … var _ … const groupSeparator … // GetLevel is used for black box unit testing. func (l *slogHandler) GetLevel() slog.Level { … } func (l *slogHandler) Enabled(_ context.Context, level slog.Level) bool { … } func (l *slogHandler) Handle(ctx context.Context, record slog.Record) error { … } // sinkWithCallDepth adjusts the stack unwinding so that when Error or Info // are called by Handle, code in slog gets skipped. // // This offset currently (Go 1.21.0) works for calls through // slog.New(ToSlogHandler(...)). There's no guarantee that the call // chain won't change. Wrapping the handler will also break unwinding. It's // still better than not adjusting at all.... // // This cannot be done when constructing the handler because FromSlogHandler needs // access to the original sink without this adjustment. A second copy would // work, but then WithAttrs would have to be called for both of them. func (l *slogHandler) sinkWithCallDepth() LogSink { … } func (l *slogHandler) WithAttrs(attrs []slog.Attr) slog.Handler { … } func (l *slogHandler) WithGroup(name string) slog.Handler { … } // attrToKVs appends a slog.Attr to a logr-style kvList. It handle slog Groups // and other details of slog. func attrToKVs(attr slog.Attr, groupPrefix string, kvList []any) []any { … } func addPrefix(prefix, name string) string { … } // levelFromSlog adjusts the level by the logger's verbosity and negates it. // It ensures that the result is >= 0. This is necessary because the result is // passed to a LogSink and that API did not historically document whether // levels could be negative or what that meant. // // Some example usage: // // logrV0 := getMyLogger() // logrV2 := logrV0.V(2) // slogV2 := slog.New(logr.ToSlogHandler(logrV2)) // slogV2.Debug("msg") // =~ logrV2.V(4) =~ logrV0.V(6) // slogV2.Info("msg") // =~ logrV2.V(0) =~ logrV0.V(2) // slogv2.Warn("msg") // =~ logrV2.V(-4) =~ logrV0.V(0) func (l *slogHandler) levelFromSlog(level slog.Level) int { … }
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