rabbitmq使用

    #include "amqp.h"
    #include "amqp_tcp_socket.h"
    #include "amqp_framing.h"
    amqp_connection_state_t m_conn;
    amqp_socket_t *m_socket;
    amqp_basic_properties_t m_props;

一：初始化

CVideoLabelsConn::CVideoLabelsConn(void):
m_bConnSucc(false)
{
    m_props._flags = AMQP_BASIC_CONTENT_TYPE_FLAG | AMQP_BASIC_DELIVERY_MODE_FLAG;
    m_props.content_type = amqp_cstring_bytes("text/plain");
    m_props.delivery_mode = DELIVER_MODE;
}

二：连接rabbitmq

HPR_INT32 CVideoLabelsConn::Connnect()
{
    HPR_Guard cGuard(&m_cLock);
    if(m_bConnSucc)
    {
        return HPR_OK;
    }
    HPR_INT32 iRet = HPR_OK;
    do 
    {
        m_conn = amqp_new_connection();
        m_socket = amqp_tcp_socket_new(m_conn);
        if(!m_socket)
        {
            PLUGIN_LOG_ERROR("rabbitmq connect amqp_tcp_socket_new fail");
            iRet = HPR_ERROR;
            break;
        }
        std::string strHostName = CRabbitMqConfig::instance()->GetIp();
        int iPort = CRabbitMqConfig::instance()->GetPort();
        int status = amqp_socket_open(m_socket, strHostName.c_str(), iPort);
        if(AMQP_STATUS_OK != status)
        {
            PLUGIN_LOG_ERROR("rabbitmq connect amqp_socket_open fail");
            iRet = HPR_ERROR;
            break;
        }
        std::string strPwd = CRabbitMqConfig::instance()->GetPwd();
        std::string strUserName = CRabbitMqConfig::instance()->GetUserName();
        std::string strVhost = CRabbitMqConfig::instance()->GetVhost();
        if(HPR_OK != die_on_amqp_error(amqp_login(m_conn, strVhost.c_str(), 0, FRAME_MAX, 0, AMQP_SASL_METHOD_PLAIN,
            strPwd.c_str(), strUserName.c_str()),
            "Logging in"))
        {
            iRet = HPR_ERROR;
            break;
        }
        //打开通道
        amqp_channel_open(m_conn, MQ_CHANNEL_ID);
        if(HPR_OK !=die_on_amqp_error(amqp_get_rpc_reply(m_conn), "Opening channel"))
        {
            iRet = HPR_ERROR;
            break;
        }
        //声明交换机
        /*std::string strExchange = CRabbitMqConfig::instance()->GetExchange();
        amqp_exchange_declare(m_conn, MQ_CHANNEL_ID, amqp_cstring_bytes(strExchange.c_str()),amqp_cstring_bytes(MQ_EXCHANGE_TYPE),
            0, 1, amqp_empty_table);        
        if(HPR_OK != die_on_amqp_error(amqp_get_rpc_reply(m_conn), "Declaring exchange"))
        {
            break;
        }*/
        iRet = HPR_OK;
        m_bConnSucc = true;
    } while (false);

    return iRet;
}

三:发送数据

HPR_INT32 CVideoLabelsConn::Send( HPR_INT32 type, void *pData, int iLen, int nMsgCount )
{
    HPR_Guard cGuard(&m_cLock);

    if ((!m_bConnSucc)||NULL == pData  || sizeof(TDA_PLATFORM_VACALARM_INFO) != iLen)
    {
        PLUGIN_LOG_ERROR("rabbit mq send failed");      
        return HPR_ERROR;
    }

    TDA_PLATFORM_VACALARM_INFO* pVideoLabelsData = (TDA_PLATFORM_VACALARM_INFO*)pData;
    std::string strMsg = pVideoLabelsData->stVacAlarmInfo.szAlarmJsonInfo;
    //rabbitmq amqp协议
    std::string strExchange = CRabbitMqConfig::instance()->GetExchange();
    std::string strRoutingKey = CRabbitMqConfig::instance()->GetRoutingKey();
    die_on_error(amqp_basic_publish(m_conn, 1, amqp_cstring_bytes(strExchange.c_str()),
        amqp_cstring_bytes(strRoutingKey.c_str()), 0, 0,
        &m_props, amqp_cstring_bytes(strMsg.c_str())),
        "Publishing");
    return HPR_OK;
}

四：释放资源

HPR_INT32 CVideoLabelsConn::Close()
{
    HPR_Guard cGuard(&m_cLock);
    die_on_amqp_error(amqp_channel_close(m_conn, 1, AMQP_REPLY_SUCCESS),
        "Closing channel");
    die_on_amqp_error(amqp_connection_close(m_conn, AMQP_REPLY_SUCCESS),
        "Closing connection");
    die_on_error(amqp_destroy_connection(m_conn), "Ending connection");
    PLUGIN_LOG_INFO("rabbitmq close succ");
    return HPR_OK;
}