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fix: Map slog field names to Datadog-friendly format #110

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Merged
nssherpa merged 1 commit into from
Feb 12, 2026
Merged

fix: Map slog field names to Datadog-friendly format #110

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19 changes: 16 additions & 3 deletions internal/logging/logging.go
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Original file line number Diff line number Diff line change
Expand Up @@ -10,16 +10,29 @@ import (
)

type Config struct {
JSON bool `hcl:"json,optional" help:"Enable JSON logging."`
Level slog.Level `hcl:"level" help:"Set the logging level." default:"info"`
JSON bool `hcl:"json,optional" help:"Enable JSON logging."`
Level slog.Level `hcl:"level" help:"Set the logging level." default:"info"`
Remap map[string]string `hcl:"remap,optional" help:"Remap field names from old to new (e.g., msg=message, time=timestamp)."`
}

type logKey struct{}

func Configure(ctx context.Context, config Config) (*slog.Logger, context.Context) {
var handler slog.Handler
if config.JSON {
handler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: config.Level})
options := &slog.HandlerOptions{Level: config.Level}
if len(config.Remap) > 0 {
options.ReplaceAttr = func(groups []string, a slog.Attr) slog.Attr {
if len(groups) > 0 {
return a
}
if newName, ok := config.Remap[a.Key]; ok {
a.Key = newName
}
return a
}
}
handler = slog.NewJSONHandler(os.Stdout, options)
} else {
handler = tint.NewHandler(os.Stderr, &tint.Options{
Level: config.Level,
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