tencent cloud

前提

成功创建：集群，表格组，tb_online 表

tb_online 表描述文件 table_test.proto 如下：（tcaplusservice.optionv1.proto 为依赖表）

syntax = "proto2";

package myTcaplusTable;

import "tcaplusservice.optionv1.proto";

message tb_online {
    option(tcaplusservice.tcaplus_primary_key) = "openid,tconndid,timekey";

    required int32 openid = 1; //QQ Uin
    required int32 tconndid = 2;
    required string timekey = 3;
    required string gamesvrid = 4;
    optional int32 logintime = 5 [default = 1];
    repeated int64 lockid = 6 [packed = true]; //repeated 类型字段使用 packed 关键字修饰
    optional pay_info pay = 7;

    message pay_info {
        optional uint64 total_money = 1;
        optional uint64 pay_times = 2;
    }
}

步骤1：定义配置参数

// 目标集群的访问地址
static const char DIR_URL_ARRAY[][TCAPLUS_MAX_STRING_LENGTH] =
{
   "tcp://10.191.***.99:9999",
   "tcp://10.191.***.88:9999"
};
// 目标集群的地址个数
static const int32_t DIR_URL_COUNT = 2;

// 目标业务的集群 ID
static const int32_t APP_ID = 3;
// 目标业务的表格组 ID
static const int32_t ZONE_ID = 1;
// 目标业务的业务密码
static const char * SIGNATURE = "*******";
// 目标业务的表名 tb_online
static const char * TABLE_NAME = "tb_online";

步骤2：初始化 TcaplusPB 客户端

//Tcaplus PB API 客户端
TcaplusAsyncPbApi g_stAsyncApi;
int32_t InitAsyncPbApi()
{
    //PB API 配置
    ClientOptions cfg;
    cfg.app_id = APP_ID;
    cfg.zones.push_back(ZONE_ID);
    strcpy(cfg.signature, SIGNATURE);
    for (int32_t i = 0; i < DIR_URL_COUNT; i++)
    {
        cfg.dirs.push_back(DIR_URL_ARRAY[i]);
    }
    //访问的 PB 表
    cfg.tables.push_back(TABLE_NAME);
    //日志配置
    strncpy(cfg.log_cfg, "tlogconf.xml", sizeof(cfg.log_cfg));
    //初始化连接超时时间5s
    cfg.timeout = 5000;

    //初始化连接
    int32_t iRet = g_stAsyncApi.Init(cfg);
    if (0 != iRet)
    {
        cout << "ERROR: g_stAsyncApi.Init failed, log cfg: " << cfg.log_cfg << ", iRet: " << iRet << "." << endl;
        return iRet;
    }
    return iRet;
}

步骤3：定义异步回调

//收到响应消息计数
uint32_t g_dwTotalRevNum = 0;
class CommonCallback : public TcaplusPbCallback
{
public:
    CommonCallback()
    {
        cout << "Init CommonCallback." << endl;
    }

    ~CommonCallback()
    {
        cout << "Fini ~CommonCallback." << endl;
    }
    //收到响应消息的回调，msgs 为获取的记录的数组
    int OnRecv(const std::vector< ::google::protobuf::Message *> &msgs)
    {
        cout << "OnRecv[" << msgs.size() << endl;
        g_dwTotalRevNum++;
        for (size_t idx = 0; idx < msgs.size(); idx++)
        {
            tb_online* t = dynamic_cast<tb_online *>(msgs[idx]);
            if (NULL == t)
            {
                cout << "ERROR: msgs[" << idx << "] not tb_online type." << endl;
                return -1;
            }

            cout << "---------- receive a response----------:" << endl;
            cout << "openid=" << t->openid() << endl;
            cout << "tconndid=" << t->tconndid() << endl;
            cout << "timekey=" << t->timekey() << endl;
            cout << "gamesvrid=" << t->gamesvrid() << endl;
            cout << "logintime=" << t->logintime() << endl;
            for (int32_t i = 0; i < t->lockid_size();i++)
            {
                cout << "lockid[" << i << "]=" << t->lockid(i) << endl;
            }
            tb_online_pay_info pay = t->pay();
            cout << "pay total_money=" << pay.total_money() << "; pay_times=" << pay.pay_times() << endl;

            //获取记录的版本号
            std::string version;
            int iRet = g_stAsyncApi.GetMessageOption(*t, NS_TCAPLUS_PROTOBUF_API::MESSAGE_OPTION_DATA_VERSION, &version);
            cout << "after GetMessageOption iRet= [" << iRet << "] version:" << version.c_str() << " msg:" << t << endl;
        }

        return 0;
    }

    //收到错误响应消息的回调
    int OnError(const std::vector< ::google::protobuf::Message *> &msgs, int errorcode)
    {
        cout << "OnError[" << msgs.size() << endl;
        g_dwTotalRevNum++;
        for (size_t idx = 0; idx < msgs.size(); idx++)
        {
            tb_online* t = dynamic_cast<tb_online *>(msgs[idx]);
            if (NULL == t)
            {
                cout << "ERROR: msgs[" << idx << "] not tb_online type." << endl;
                return -1;
            }

            if (TcapErrCode::TXHDB_ERR_RECORD_NOT_EXIST == errorcode)
            {
                cout << "ERROR: openid= " << t->openid() << ", tconndid= " << t->tconndid() << ", timekey= " << t->timekey() << ", record not exists" << endl;
            }
            cout << "ERROR: openid = [" << t->openid() << "], tconndid = [" << t->tconndid() << "], timekey =[" << t->timekey() << "] failed:%d"  << errorcode << endl;
        }

        return 0;
    }

    //消息超时的回调
    int OnTimeout(const std::vector< ::google::protobuf::Message *> &msgs)
    {
        cout << "OnTimeout[" << msgs.size() << endl;
        for (size_t idx = 0; idx < msgs.size(); idx++)
        {
            tb_online* t = dynamic_cast<tb_online *>(msgs[idx]);
            if (NULL == t)
            {
                cout << "TIMEOUT: msgs[" << idx << "] not tb_online type!" << endl;
                return -1;
            }

            cout << "TIMEOUT: openid = [" << t->openid() << "], tconndid = [" << t->tconndid() << "], timekey =[" << t->timekey() << "] timeout" << endl;
        }

        return 0;
    }

    int OnFinish(const NS_TCAPLUS_PROTOBUF_API::MsgParam &param)
    {
        cout << "OnFinish: " << param.m_nOperation << " req: " << param.m_vecMsgs.size()<< endl;
        return 0;
    }
};

步骤4：发送 get 请求

int SendGetRequest()
{
    static tb_online t;
    t.set_openid(1);
    t.set_tconndid(1);
    t.set_timekey("test_tcaplus");

    cout << "INIT: openid= " << t.openid() << ", tconndid= " << t.tconndid() << ", timekey=" << t.timekey() << endl;

    static CommonCallback cb;
    int32_t iRet = g_stAsyncApi.Get(&t, &cb);
    if (iRet != TcapErrCode::GEN_ERR_SUC)
    {
        cout << "ERROR: openid= " << t.openid() << ", tconndid= " << t.tconndid() << ", timekey= " << t.timekey() << ", Get Error iRet = " << iRet << endl;
        return -1;
    }
    return 0;
}

示例

int main(void) {

    //初始化 API 客户端
    int ret = InitAsyncPbApi();
    if ( ret != 0)
    {
        printf("InitAsyncPbApi failed\n");
        return -1;
    }

    //发送请求
    ret = SendGetRequest();
    if (0 != ret)
    {
        printf("SendSetRequest failed\n");
        return -1;
    }

    //接收响应
    do
    {
        // 更新，接收回包
        g_stAsyncApi.UpdateNetwork();
        usleep(1000 * 10);
    } while (g_dwTotalRevNum != 1);
    return 0;
}