bomex.git - Gitblit

Joel Grunbaum

2022-01-19 0b7aa02704f6ece97d17fbb118519c5cc62caaba

commit \| author \| age
16b655	1	#include "protocol.hpp"
JG	2
	3	#include "book.hpp"
	4	#include "cpp-httplib/httplib.h"
4fdb65	5	#include "easywsclient/easywsclient.hpp"
16b655	6	#include "json.hpp"
JG	7	#include "secrets.hpp"
	8
	9	#include <chrono>
4fdb65	10	#include <cstddef>
16b655	11	#include <iostream>
4fdb65	12	#include <memory>
16b655	13	#include <queue>
JG	14	#include <sstream>
4fdb65	15	#include <stdexcept>
16b655	16	#include <string>
JG	17	#include <unordered_map>
	18
	19	namespace protocol
	20	{
	21	static std::unordered_map<json::MessageTypes, book::ProductTypeEnum>
2c515f	22	mapAnnounce;
16b655	23	std::string server = std::string(HOST) + ":" + std::string(PORT);
JG	24	httplib::Client cli("http://" + server);
0b7aa0	25	std::unique_ptr<easywsclient::WebSocket> ws;
4fdb65	26
JG	27	double lastime = 0;
16b655	28
JG	29	void initialise()
	30	{
2c515f	31	mapAnnounce = {{json::FUTURE_TYPE, book::FUTURE},
JG	32	{json::SPREAD_TYPE, book::SPREAD},
	33	{json::CALL_TYPE, book::CALL},
	34	{json::PUT_TYPE, book::PUT}};
16b655	35	}
JG	36
	37	std::unordered_map<std::string, book::Book> recoverBook()
	38	{
2c515f	39	std::unordered_map<std::string, book::Book> bs;
JG	40	// std::ifstream sampleFile("../data.test");
	41	// std::stringstream ss;
	42	// ss << sampleFile.rdbuf();
	43	httplib::Client cli("http://" + server);
	44	auto res = cli.Get("/recover");
	45	std::string l;
	46	// l = ss.str();
	47	l = res->body;
	48	std::queue<json::Message*> a(json::parse(l));
	49	while (!a.empty()) {
4fdb65	50	if (static_cast<json::FromExchange*>(a.front()) != nullptr \|\|
JG	51	static_cast<json::FromExchange*>(a.front())->timestamp > lastime) {
	52	lastime = static_cast<json::FromExchange*>(a.front())->timestamp;
	53	protocol::handleMessage(bs, a.front());
	54	}
2c515f	55	delete a.front();
JG	56	a.pop();
	57	}
	58	return bs;
4fdb65	59	}
JG	60
0b7aa0	61	void createWebSocket()
4fdb65	62	{
0b7aa0	63	ws = std::unique_ptr<easywsclient::WebSocket>(
JG	64	easywsclient::WebSocket::pointer(easywsclient::WebSocket::from_url(
	65	"ws://" + server + "/information")));
4fdb65	66	ws->poll();
0b7aa0	67	}
JG	68
	69	std::deque<json::Message*>
	70	catchUp(std::unordered_map<std::string, book::Book>& bs)
	71	{
	72	std::string feed;
	73	bool gotMessage;
	74	std::deque<json::Message*> out;
	75	do {
	76	gotMessage = false;
	77	ws->poll();
	78	ws->dispatch([gotMessageOut = &gotMessage, messageOut = &feed,
	79	ws = ws.get()](const std::string& message) {
	80	*gotMessageOut = true;
	81	*messageOut = message;
	82	});
	83	if (gotMessage) {
	84	std::queue<json::Message*> a(json::parse(feed));
	85	while (!a.empty()) {
	86	if (static_cast<json::FromExchange*>(a.front()) != nullptr \|\|
	87	static_cast<json::FromExchange*>(a.front())->timestamp >
	88	lastime) {
	89	lastime =
	90	static_cast<json::FromExchange*>(a.front())->timestamp;
	91	}
	92	protocol::handleMessage(bs, a.front());
	93	out.push_back(a.front());
	94	a.pop();
4fdb65	95	}
JG	96	}
0b7aa0	97	} while (gotMessage);
JG	98	return out;
16b655	99	}
JG	100
6926be	101	json::Message* addOrder(json::AddMessage& order)
16b655	102	{
6bdd28	103	std::string message = order.as_string();
2c515f	104	return send(message);
16b655	105	}
JG	106
6926be	107	json::Message* deleteOrder(json::DeleteMessage& order)
16b655	108	{
6bdd28	109	std::string message = order.as_string();
2c515f	110	return send(message);
16b655	111	}
JG	112
	113	void handleMessage(std::unordered_map<std::string, book::Book>& bs,
	114	json::Message* message)
	115	{
2c515f	116	if (mapAnnounce.empty()) initialise();
4fdb65	117	if (dynamic_cast<json::FromExchange*>(message) != nullptr) {
JG	118	lastime = dynamic_cast<json::FromExchange*>(message)->timestamp;
	119	}
2c515f	120	switch (message->type) {
JG	121	case json::FUTURE_TYPE:
	122	case json::SPREAD_TYPE:
	123	case json::CALL_TYPE:
	124	case json::PUT_TYPE:
611ad7	125	announce(bs, static_cast<json::AnnounceMessage*>(message));
2c515f	126	break;
JG	127	case json::SETTLEMENT:
611ad7	128	settle(bs, static_cast<json::SettleMessage*>(message));
2c515f	129	break;
JG	130	case json::ADDED:
611ad7	131	addedOrder(bs, static_cast<json::AddedMessage*>(message));
2c515f	132	break;
JG	133	case json::DELETED:
611ad7	134	deletedOrder(bs, static_cast<json::DeletedMessage*>(message));
2c515f	135	break;
JG	136	case json::TRADE:
611ad7	137	tradeOrder(bs, static_cast<json::TradeMessage*>(message));
2c515f	138	break;
JG	139	case json::BROKER_REQUEST:
	140	case json::BROKER_ACK:
	141	case json::BROKER_CONFIRM:
611ad7	142	broker(bs, static_cast<json::Broker*>(message));
2c515f	143	break;
JG	144	default:;
	145	}
16b655	146	}
JG	147
	148	void announce(std::unordered_map<std::string, book::Book>& bs,
	149	json::AnnounceMessage* message)
	150	{
2c515f	151	bs[message->product] =
JG	152	book::Book(mapAnnounce[message->type], message->product,
	153	message->stationId, message->unit, message->expiry,
	154	message->aggFee, message->pasFee, message->broFee);
16b655	155	}
JG	156	void settle(std::unordered_map<std::string, book::Book>& bs,
	157	json::SettleMessage* message)
	158	{
2c515f	159	bs.erase(message->product);
16b655	160	}
JG	161	void addedOrder(std::unordered_map<std::string, book::Book>& bs,
	162	json::AddedMessage* message)
	163	{
4fdb65	164	if (message->side == book::Buy && message->resting) {
2c515f	165	book::Order t(message->price, book::Buy, message->resting,
JG	166	message->timestamp, message->id);
	167	bs[message->product].bid(t);
4fdb65	168	} else if (message->side == book::Sell && message->resting) {
2c515f	169	book::Order t(message->price, book::Sell, message->resting,
JG	170	message->timestamp, message->id);
	171	bs[message->product].ask(t);
	172	}
16b655	173	}
JG	174	void deletedOrder(std::unordered_map<std::string, book::Book>& bs,
	175	json::DeletedMessage* message)
	176	{
2c515f	177	if (message->side == book::Buy) {
4fdb65	178	bs[message->product].bidSide.erase(message->id);
2c515f	179	} else {
4fdb65	180	bs[message->product].askSide.erase(message->id);
16b655	181	}
JG	182	}
	183	void tradeOrder(std::unordered_map<std::string, book::Book>& bs,
	184	json::TradeMessage* message)
	185	{
83c048	186	if (bs.find(message->passiveOrder) != bs.end()) {
4fdb65	187	if (message->tradeType == json::BUY_AGGRESSOR) {
JG	188	if (message->passiveOrderRemaining > 0) {
	189	bs[message->product].askSide.at(message->passiveOrder).volume =
	190	message->passiveOrderRemaining;
	191	} else {
	192	bs[message->product].askSide.erase(message->passiveOrder);
	193	}
	194	} else if (message->tradeType == json::SELL_AGGRESSOR) {
	195	if (message->passiveOrderRemaining > 0) {
	196	bs[message->product].bidSide.at(message->passiveOrder).volume =
	197	message->passiveOrderRemaining;
	198	} else {
	199	bs[message->product].bidSide.erase(message->passiveOrder);
	200	}
	201	}
2c515f	202	}
16b655	203	}
4fdb65	204
16b655	205	void broker(std::unordered_map<std::string, book::Book>& bs,
JG	206	json::Broker* message)
	207	{
	208	}
	209
6926be	210	json::Message* send(std::string& message)
16b655	211	{
4fdb65	212	httplib::MultipartFormDataItems a = {{"message", message, "", ""},
JG	213	{"username", USER, "", ""},
	214	{"password", PASS, "", ""}};
6bdd28	215	auto res = cli.Post("/execution", a);
JG	216	std::string b = res->body;
	217	std::queue<json::Message*> c = json::parse(b);
	218	return c.front();
16b655	219	}
JG	220
	221	} // namespace protocol