哈希函数是一种从任何一种数据中创建小的数字指纹的方法。哈希函数把消息或数据压缩成摘要，使得数据量变小，将数据的格式固定下来。该函数将数据打乱混合，重新创建一个叫做散列值的指纹。
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void WtHftStraDemo::tqz_marketMaking(const int codeLongOffsetTicks,const int codeShortOffsetTicks){
if(!this->__isMarketMakingAble())
return;
this->__lockBuy();//lock market_making.
this->__lockShort();关于区块链项目技术开发唯:MrsFu123，代币发行、dapp智能合约开发、链游开发、多链钱包开发
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std::string buyOrderComment("code_buyOrder_marketMaking");
std::string shortOrderComment("code_shortOrder_marketMaking");
double currentMidPrice=this->_last_mid_price;//make sure mid price of market making is same.
开发哈希I35源码7O98设计O7I8
double buyOrderPrice=this->__tqz_getMarketMakingLongPrice(this->_code.c_str(),currentMidPrice,codeLongOffsetTicks);
double shortOrderPrice=this->__tqz_getMarketMakingShortPrice(this->_code.c_str(),currentMidPrice,codeShortOffsetTicks);
uint32_t buyOrderLocalid=this->_ctx->stra_enter_long(this->_code.c_str(),buyOrderPrice,UNIT,buyOrderComment.c_str());
uint32_t shortOrderLocalid=this->_ctx->stra_enter_short(this->_code.c_str(),shortOrderPrice,UNIT,shortOrderComment.c_str());
std::string currentMarketTimeString=this->__tqz_getCurrentMarketTime();
std::string sendOrderTimeString=this->__tqz_getCurrentTime();
this->_code_buy_order=buyOrderLocalid;
this->_code_buy_orders.insert(buyOrderLocalid);
this->_code_short_order=shortOrderLocalid;
this->_code_short_orders.insert(shortOrderLocalid);
if(!this->_record_hft_log)
return;
double currentPrice=this->_ctx->stra_get_price(this->_code.c_str());//current market price.
this->_log_message_map[buyOrderLocalid]=this->__tqz_getNewLogMessage(this->_code,buyOrderLocalid,currentPrice,buyOrderPrice,"buy_order",currentMarketTimeString,sendOrderTimeString,buyOrderComment);
this->_log_message_map[shortOrderLocalid]=this->__tqz_getNewLogMessage(this->_code,shortOrderLocalid,currentPrice,shortOrderPrice,"short_order",currentMarketTimeString,sendOrderTimeString,shortOrderComment);
}
void WtHftStraDemo::tqz_closePositions(const std::string code,const uint32_t closePositionsOffsetTicks){
if(this->_ctx->tqz_getLongPosition(code.c_str())>0){///close long positions.
this->tqz_sell(code,UNIT,closePositionsOffsetTicks,"code_sellOrder_closePositions");
}else if(this->_ctx->tqz_getShortPosition(code.c_str())>0){///close short positions.
this->tqz_cover(code,UNIT,closePositionsOffsetTicks,"code_coverOrder_closePositions");
}
}
void WtHftStraDemo::tqz_doReconnect(){
if(this->__closeCodeIsLock(true))
return;
double currentCodeLongLots=this->_ctx->tqz_getLongPosition(this->_code.c_str());
double currentCodeShortLots=this->_ctx->tqz_getShortPosition(this->_code.c_str());
if(currentCodeLongLots>0&¤tCodeLongLots>=currentCodeShortLots){///have long position&long lots big.
this->tqz_sell(this->_code,UNIT,OPEN_CLOSE_POSITION_OFFSET_TICKS,"code_sellOrder_reConnect");
}else if(currentCodeShortLots>0&¤tCodeLongLots<currentCodeShortLots){///have short position&short lots big.
this->tqz_cover(this->_code,UNIT,OPEN_CLOSE_POSITION_OFFSET_TICKS,"code_coverOrder_reConnect");
}
}
bool WtHftStraDemo::__isEntrustable(std::string code){
if(this->__isBeyondUpperlimitOrLowerlimit(code,OPEN_CLOSE_POSITION_OFFSET_TICKS,OPEN_CLOSE_POSITION_OFFSET_TICKS))///because cancel limit is 100.
return false;
if(this->_ctx->tqz_getCancelCounts(code.c_str())>(this->_cancel_limit_counts+10)){
this->_ctx->stra_log_text("[WtHftStraDemo::__isEntrustable],out of cancel limit counts when entrust,code:%s,如果这条log被记录了,说明策略执行逻辑被强行干扰了",code.c_str());
return false;
}
return true;
}
void WtHftStraDemo::__initSessionStatus(TQZSessionStatus sessionStatus){
this->_current_session_status=sessionStatus;
switch(sessionStatus){
case CLOSE_POSTIONS_STATUS:{
break;
}
case MARKET_MAKING_STATUS:{//position and order is empty in theory.
this->__unlockAllOrders();
this->__tqz_clearPreviousSessionCache();
this->_re_marketMaking=true;
break;
}
case RE_CONNECT_STATUS:{
this->__tqz_writeCancelOrderCountsLog(this->_code);
this->_re_connect_ready=this->__tqz_queryReconnectResult();
}
default:
break;
}
}
bool WtHftStraDemo::__tqz_queryReconnectResult(){
double codeLongLots=this->_ctx->tqz_getLongPosition(this->_code.c_str());
double codeShortLots=this->_ctx->tqz_getShortPosition(this->_code.c_str());
return(codeLongLots<0.00001&&codeShortLots<0.00001);//hold positions is empty.
}
void WtHftStraDemo::__tqz_clearPreviousSessionCache(){
//缓存清理无效,成员变量换成指针类型;(每小节初始化时清理一次)
this->_code_buy_orders.erase(this->_code_buy_orders.begin(),this->_code_buy_orders.end());
this->_code_sell_orders.erase(this->_code_sell_orders.begin(),this->_code_sell_orders.end());
this->_code_short_orders.erase(this->_code_short_orders.begin(),this->_code_short_orders.end());
this->_code_cover_orders.erase(this->_code_cover_orders.begin(),this->_code_cover_orders.end());
this->_log_message_map.clear();
}
