converter.go

package sloggraylog

import (
	"log/slog"

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

var SourceKey = "source"
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) (extra map[string]any)

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

	// developer formatters
	if addSource {
		attrs = append(attrs, slogcommon.Source(SourceKey, record))
	}
	attrs = slogcommon.ReplaceAttrs(replaceAttr, []string{}, attrs...)
	attrs = slogcommon.RemoveEmptyAttrs(attrs)

	// handler formatter
	extra = slogcommon.AttrsToMap(attrs...)

	for _, errorKey := range ErrorKeys {
		if v, ok := extra[errorKey]; ok {
			if err, ok := v.(error); ok {
				extra[errorKey] = slogcommon.FormatError(err)
				break
			}
		}
	}

	return extra
}