protoJson.kt

inline fun <reified T : Message> protoFromJson(json: String): T {
    val builder = T::class.java.getDeclaredMethod("newBuilder").invoke(null) as Message.Builder
    JsonFormat.parser().merge(json, builder)
    return builder.build() as T
}

inline fun <reified T : Message> protoToJson(message: T): String {
    val builder = T::class.java.getDeclaredMethod("newBuilder", message::class.java).invoke(null, message) as Message.Builder
    return JsonFormat.printer().print(builder)
}