converter.go

package slogquickwit

import (
	"log/slog"

	slogcommon "github.com/samber/slog-common"
)

var SourceKey = "source"
var ContextKey = "context"
var ErrorKeys = []string{"error", "err"}

type Converter func(addSource bool, replaceAttr func(groups []string, a slog.Attr) slog.Attr, loggerAttr []slog.Attr, groups []string, record *slog.Record) map[string]any

func DefaultConverter(addSource bool, replaceAttr func(groups []string, a slog.Attr) slog.Attr, loggerAttr []slog.Attr, groups []string, record *slog.Record) map[string]any {
	// aggregate all attributes
	attrs := slogcommon.AppendRecordAttrsToAttrs(loggerAttr, groups, record)

	// developer formatters
	attrs = slogcommon.ReplaceAttrs(replaceAttr, []string{}, attrs...)
	attrs = slogcommon.RemoveEmptyAttrs(attrs)

	// handler formatter
	log := map[string]any{
		"logger.name":    name,
		"logger.version": version,
		"timestamp":      record.Time.UTC(),
		"level":          record.Level.String(),
		"message":        record.Message,
	}

	if addSource {
		attrs = append(attrs, slogcommon.Source(SourceKey, record))
	}

	context := slogcommon.AttrsToMap(attrs...)

	for _, errorKey := range ErrorKeys {
		if err, ok := context[errorKey]; ok {
			if e, ok := err.(error); ok {
				log[errorKey] = slogcommon.FormatError(e)
				delete(context, errorKey)
				break
			}
		}
	}

	log[ContextKey] = context

	return log
}