Function randomSleep

example/E03-ThirdFlow.cpp:19–24

static const char* RESULT_TOPIC_NAME = "example/result/topic";

int randomSleep(int start, int range) {
    // 随机休息一下，模拟处理的耗时
    int ms = std::abs((int)std::random_device{}()) % range + start;
    CGRAPH_SLEEP_MILLISECOND(ms);
    return ms;
}

struct InputMParam : public GMessageParam {
    int num_ = 0;