Joel Grunbaum
2022-01-13 90107c504e5b7d1bea2c93a43c7d07b640350355
json.cpp
@@ -1,6 +1,5 @@
#include "json.hpp"
#include "book.hpp"
#include "date/include/date/date.h"
#include "protocol.hpp"
#include "rapidjson/include/rapidjson/document.h"
#include "rapidjson/include/rapidjson/rapidjson.h"
@@ -48,7 +47,8 @@
   mapOrder = {{"BUY", book::Buy}, {"SELL", book::Sell}};
   mapTrade = {{"BUY_AGGRESSOR", BUY_AGGRESSOR},
               {"SELL_AGGRESSOR", SELL_AGGRESSOR}};
               {"SELL_AGGRESSOR", SELL_AGGRESSOR},
               {"BROKER_TRADE", BROKER_TRADE}};
   mapOrderSide = {{book::Buy, "BUY"}, {book::Sell, "SELL"}};
}
@@ -58,10 +58,14 @@
SettleMessage* settle(rapidjson::Value& d);
AddedMessage* added(rapidjson::Value& d);
DeletedMessage* deleted(rapidjson::Value& d);
RejectMessage* reject(rapidjson::Value& d);
TradeMessage* trade(rapidjson::Value& d);
BrokerRequest* brokerReq(rapidjson::Value& d);
BrokerAck* brokerAck(rapidjson::Value& d);
BrokerConfirm* brokerCon(rapidjson::Value& d);
ErrorMessage* error(rapidjson::Value& d);
std::chrono::seconds parseTime(std::string& s);
std::queue<Message*> parse(std::string& str)
{
@@ -83,6 +87,7 @@
   if (mapTypes.empty()) {
      initialise();
   }
   if (d.HasMember("error")) return error(d);
   Message* out;
   switch (mapTypes[d["type"].GetString()]) {
   case FUTURE_TYPE:
@@ -99,6 +104,9 @@
      break;
   case DELETED:
      out = deleted(d);
      break;
   case REJECT:
      out = reject(d);
      break;
   case TRADE:
      out = trade(d);
@@ -119,12 +127,21 @@
   return out;
}
std::chrono::seconds parseTime(std::string& s)
{
   return std::chrono::hours{std::stoi(s.substr(0, 4)) * 24 * 30 * 12} +
          std::chrono::hours{std::stoi(s.substr(5, 2)) * 24 * 30} +
          std::chrono::hours{std::stoi(s.substr(8, 2)) * 24} +
          std::chrono::hours{std::stoi(s.substr(11, 2))} +
          std::chrono::minutes{std::stoi(s.substr(14, 2))} +
          std::chrono::hours{std::stoi(s.substr(16, 5))};
}
AnnounceMessage* announce(rapidjson::Value& d)
{
   // std::stringstream expiryStream(d["expiry"].GetString());
   std::string es = d["expiry"].GetString();
   std::chrono::nanoseconds exp_time(0);
   // expiryStream >>
   // date::parse("%Y-%m-%f %H:%M%z", exp_time); // Parsing is broken
   exp_time = parseTime(es);
   return new AnnounceMessage(
      mapTypes[d["type"].GetString()], d["product"].GetString(),
      d["stationId"].GetInt(), d["stationName"].GetString(),
@@ -135,9 +152,9 @@
SettleMessage* settle(rapidjson::Value& d)
{
   // std::stringstream expiryStream(d["expiry"].GetString());
   std::chrono::nanoseconds exp_time(0);
   // expiryStream >> date::parse("%Y-%m-%d %H:%M%z", exp_time);
    std::string es = d["expiry"].GetString();
    exp_time = parseTime(es);
   return new SettleMessage(
      mapTypes[d["type"].GetString()], d["product"].GetString(),
      d["stationName"].GetString(), exp_time, d["price"].GetDouble(),
@@ -159,6 +176,12 @@
      mapTypes[d["type"].GetString()], d["product"].GetString(),
      d["id"].GetString(), mapOrder[d["side"].GetString()],
      d["sequence"].GetInt(), d["timestamp"].GetDouble());
}
RejectMessage* reject(rapidjson::Value& d)
{
   return new RejectMessage(mapTypes[d["type"].GetString()], "",
                            d["error"].GetString(), uint64_t(0), double(0));
}
TradeMessage* trade(rapidjson::Value& d)
@@ -197,11 +220,25 @@
      d["id"].GetString());
}
ErrorMessage* error(rapidjson::Value& d)
{
   return new ErrorMessage(d["error"].GetString());
}
Message::Message() : type(NONE), product("error") {}
Message::Message(MessageTypes types, std::string product)
   : type(types), product(product)
{
}
ErrorMessage::ErrorMessage(std::string message)
   : Message(ERROR, ""), message(message)
{
}
std::string ErrorMessage::as_string()
{
   return "{\"error\": \"" + this->message + "\"}";
}
FromExchange::FromExchange(MessageTypes type, std::string product,
@@ -266,6 +303,18 @@
{
}
std::string AddedMessage::as_string()
{
   return "{\"type\": \"ADDED\", \"product\": \"" + this->product +
          "\", \"product\": \"" + this->id + "\" \"side\": \"" +
          mapOrderSide[this->side] +
          "\", \"price\": " + std::to_string(this->price) +
          "\"filled\": " + std::to_string(this->filled) +
          ", \"resting\": " + std::to_string(this->resting) +
          ", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\":" + std::to_string(this->timestamp) + "}";
}
DeleteMessage::DeleteMessage(MessageTypes type, std::string product,
                             std::string id)
   : ToExchange(type, product), id(id)
@@ -286,6 +335,15 @@
{
}
std::string DeletedMessage::as_string()
{
   return "{\"type\": \"DELETED\", \"product\": \"" + this->product +
          "\", \"product\": \"" + this->id + "\" \"side\": \"" +
          mapOrderSide[this->side] +
          ", \"sequence\": " + std::to_string(this->sequence) +
          ", \"timestamp\":" + std::to_string(this->timestamp) + "}";
}
RejectMessage::RejectMessage(MessageTypes type, std::string product,
                             std::string error, uint64_t sequence,
                             double timestamp)
@@ -293,6 +351,14 @@
{
}
std::string RejectMessage::as_string()
{
   return "{\"type\": \"REJECT\", \"product\": \"" + this->product =
              "\", \"error\": \"" + this->error +
              "\", \"sequence\": " + std::to_string(this->sequence) +
              ", \"timestamp\": " + std::to_string(this->timestamp) + "}";
}
TradeMessage::TradeMessage(MessageTypes type, std::string product, double price,
                           uint64_t volume, std::string buyer,
                           std::string seller, TradeTypeEnum tradeType,