Function RemoveMetaFields

admin.go:1343–1354

RemoveMetaFields removes meta fields like "@id" from a JSON message by using a simple regular expression. (An alternate way to do this would be to delete them from the raw, map[string]any representation as they are indexed, then iterate the index we made and add them back after encoding as JSON, but

(rawJSON []byte)

// representation as they are indexed, then iterate the index we made
// and add them back after encoding as JSON, but this is simpler.)
func RemoveMetaFields(rawJSON []byte) []byte {
	return idRegexp.ReplaceAllFunc(rawJSON, func(in []byte) []byte {
		// matches with a comma on both sides (when "@id" property is
		// not the first or last in the object) need to keep exactly
		// one comma for correct JSON syntax
		comma := []byte{','}
		if bytes.HasPrefix(in, comma) && bytes.HasSuffix(in, comma) {
			return comma
		}
		return []byte{}
	})
}

// AdminHandler is like http.Handler except ServeHTTP may return an error.
//