dcapp/datacenter/bizService/F_DeteteData.cpp

/*
 * @Description: file content
 * @Author: why
 * @version: 
 * @Date: 2025-02-28 14:24:59
 * @LastEditors: why
 * @LastEditTime: 2025-02-28 17:56:47
 */
#include <iostream>
#include <chrono>
#include <iomanip>
#include <sstream>
#include <string>
#include <ctime>
#include "common/inc/json.hpp"
#include "F_DeleteData.h"
#include "bizservice.h"
#include "ToolUtils.h"

using namespace std;
using json = nlohmann::json ;// for convenience
typedef	unsigned char BYTE;

typedef struct topic{

    std::string src;
    std::string des;
    std::string sid;
    std::string fid;
} topic_type;

REGISTER_BIZSERVICE("F-DeleteData",DeleteData);

DeleteData::DeleteData(void){
    handpara = nullptr;
    initpara = nullptr;
}

DeleteData::~DeleteData(void){
}

void DeleteData::Init(initparam_t *param){
    initpara = param;
}

static std::string search_table_db(int afn,unsigned int dataid){
    std::string table;
    return table;
}

std::string DeleteData::GetFID(){
    std::string value("F-DeleteData");
    return value;
}
int  DeleteData::SQLBatch_exc(sqlite3 *db,std::vector<std::string> &sql_list,std::vector<int> &result){
    char *errMsg = nullptr;
    const char *sql;
    int rc;
    int resp = 0;
    // 开启事务
    if (sqlite3_exec(db, "BEGIN TRANSACTION;", nullptr, nullptr, &errMsg) != SQLITE_OK) {
        std::cerr << "事务开启失败: " << errMsg << std::endl;
        sqlite3_free(errMsg);
        return -1;
    }
    // 执行批量插入操作
    sqlite3_stmt *stmt;
    int idx = 0;
    int count = 0;
    for(const auto &k:sql_list){
        std::cout << "cmd:"<<k.c_str()<<std::endl;
        if (sqlite3_prepare_v2(db, k.c_str(), -1, &stmt, nullptr) != SQLITE_OK) {
                std::cerr << "准备语句失败: " << sqlite3_errmsg(db) << std::endl;
                continue;
            }
        rc = sqlite3_step(stmt);
 
        
        if (rc != SQLITE_DONE) {
            std::cerr << "插入失败: " << sqlite3_errmsg(db) << std::endl;
            result[idx] = -1;
        }else
            result[idx] = 0; //SUCCESS
        
        sqlite3_reset(stmt); // 重置语句
    }
    // 提交事务
    if (sqlite3_exec(db, "COMMIT;", nullptr, nullptr, &errMsg) != SQLITE_OK) {
        std::cerr << "事务提交失败: " << errMsg << std::endl;
        sqlite3_free(errMsg);
        resp = -1;
    }
    // 清理
    sqlite3_finalize(stmt);
    return resp;
}


int DeleteData::HandleMsg(const msg_t msg, msg_t &outMsg,handparam_t *param){
    
    topic.clear();
    topic = msg.subTopicV;
    json value,resp;
    int ret = 0;
    int afn_flag = 0, update_flag = 0;;
    std::vector<std::string> sql_list;
    std::vector<int> result;
    sql_list.clear();
    result.clear();
    std::string table_name ;
    try{
        value = json::parse(msg.payload);
    }
    catch(const std::exception &e){
        std::cout << "topic "<<msg.topic.c_str()<<" prase error:"<<e.what();
        return -1;//format fail
    }
    if(!value.is_object())return -1;
    if(value.contains("token")){
        resp["token"] = value["token"];
    }
    if(value.contains("time")){
       ;// value["time"]
    }

        std::stringstream ss;
        //table_name =search_table_db(afn,dataid);
        table_name = "frozen";
        ss << "delete  from " <<table_name.c_str()<<";";
        printf("DeleteData sql:%s \n",ss.str().c_str());
        sql_list.push_back(ss.str());  
        ss.clear();       
    ret = SQLBatch_exc((sqlite3*)handpara,sql_list,result);
resp_process:
    resp["time"]=ToolUtils::now_to_string();
    resp["ack"]="true";

    outMsg.topic = ToolUtils::makeTpopicStr(topic);
    outMsg.timestamp = time(NULL);
    outMsg.payload = resp.dump();
    std::cout << "resp DeleteData payload:"<<resp.dump().c_str()<<std::endl;
    return 1;
}