def cancel(self, ver, user, symbol):
amount = -1
try:
curr = self.timers[ver][user]
try:
event = curr[symbol]
try:
if event[0] is not None:
if event[0].is_alive():
# Kill QuoteThread if running
event[0].join()
else:
event[1] = 0
event[0] = None
amount = event[1]
elif event[1] > 0:
amount = event[1]
event[1] = 0
self.timers[ver][user].pop(symbol)
except Exception as e:
AuditLogBuilder("ERROR", "event_server", AuditCommandType.errorEvent).build({
"Command": "CANCEL_SET_BUY",
"errorMessage": str(e)
}).send()
except KeyError:
pass # TR-added
# curr[symbol] = [None, 0, 0] # TR-This line makes no sense, why add an empty trigger?
except KeyError:
pass # TR-added
# self.timers[ver][user] = {symbol: [None, 0, 0]} # TR-This line also makes no sense to execute
return amount
def quote(self, data):
AuditLogBuilder("QUOTE", self._server_name,
AuditCommandType.userCommand).build(data).send()
quote_data = self.cache.quote(data["StockSymbol"], data["userid"])
data["Quote"] = quote_data[0]
data["quoteServerTime"] = quote_data[3]
data["cryptokey"] = quote_data[4]
return True
def cancel_set_sell(self, data):
AuditLogBuilder("CANCEL_SET_SELL", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
symbol = data["StockSymbol"]
self.events.cancel("sel", user, symbol)
return succeeded
def set_sell_trigger(self, data):
AuditLogBuilder("SET_SELL_TRIGGER", self._server_name,
AuditCommandType.userCommand).build(data).send()
user = data["userid"]
symbol = data["StockSymbol"]
price = float(data["amount"]) # Sell shares at this price or higher
result = self.events.trigger("sel", user, symbol, price)
return result
def set_buy_trigger(self, data):
AuditLogBuilder("SET_BUY_TRIGGER", self._server_name,
AuditCommandType.userCommand).build(data).send()
user = data["userid"]
symbol = data["StockSymbol"]
price = float(data["amount"])
result = self.events.trigger("buy", user, symbol, price)
return result
def set_sell_amount(self, data):
AuditLogBuilder("SET_SELL_AMOUNT", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
symbol = data["StockSymbol"]
amount = int(float(data["amount"]))
if self.events.register("sel", user, symbol, amount):
succeeded = True
return succeeded
def cancel_sell(self, data):
AuditLogBuilder("CANCEL_SELL", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
try:
self.cli_data.pop(user, "sell")
succeeded = True
except Exception as e:
print(f"\033[1;33mTrans-Server.cancel_sell:{e}\033[0;0m")
pass
return succeeded
def sell(self, data):
AuditLogBuilder("SELL", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
dollar_amt_to_sell = float(data["amount"])
symbol = data["StockSymbol"]
stocks_on_hand = int(self.cli_data.get_stock_held(user, symbol))
if stocks_on_hand > 0:
self.cli_data.push(user, data["StockSymbol"], dollar_amt_to_sell,
"sell")
succeeded = True
return succeeded
def buy(self, data):
AuditLogBuilder("BUY", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
amount = Currency(data["amount"])
user_funds = self.cli_data.check_money(user)
if ((user_funds - amount) > 0):
self.cli_data.push(user, data["StockSymbol"], float(amount), "buy")
succeeded = True
return succeeded
def new_quote(self, symbol, user):
if (self.quote_server):
self.conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
self.conn.connect(
(self.quote_server_host, self.quote_server_port))
self.conn.sendall(str.encode(symbol + ", " + user + "\n"))
print(
"\033[1;33m->quote_server 'quote request' sent\n->waiting for response...\033[0;0m"
)
data = self.conn.recv(BUFFER_SIZE).decode().split(",")
self.conn.close()
except Exception as e:
print(f"\033[1;31m{e}\033[0;0m")
else:
# time.sleep(2)
data = ["20.87", symbol, user, time.time(), "QWERTYUIOP"]
qtm = time.time()
amount = Currency(data[0])
data[0] = amount
cryptokey = data[4]
requests.post(
f"{self.quote_cache_server_url}/{QuoteCacheUrls.CACHE_QUOTE}",
json={
"stock_symbol": symbol,
"dollars": amount.dollars,
"cents": amount.cents,
"quote_time": qtm,
"cryptokey": cryptokey
})
AuditLogBuilder("QUOTE", self._server_name,
AuditCommandType.quoteServer).build({
"Quote":
data[0],
"StockSymbol":
data[1],
"userid":
data[2],
"quoteServerTime":
data[3],
"cryptokey":
data[4]
}).send()
return data
def display_summary(self, data):
user = data["userid"]
acc = self.cli_data.get_user(user)
tri = self.events.state(user)
buy_triggers_keys = tri["buy"].keys()
sell_triggers_keys = tri["sel"].keys()
tri_copy = {"buy": {}, "sel": {}}
for stock_sym in buy_triggers_keys:
tri_copy["buy"][stock_sym] = str(tri["buy"][stock_sym])
for stock_sym in sell_triggers_keys:
tri_copy["sel"][stock_sym] = str(tri["sel"][stock_sym])
AuditLogBuilder("DISPLAY_SUMMARY", self._server_name,
AuditCommandType.userCommand).build(data).send()
return {"Account": acc, "Triggers": tri_copy}
def commit_sell(self, data):
AuditLogBuilder("COMMIT_SELL", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
cli_data = self.cli_data
try:
sell_data = cli_data.pop(user, "sell")
if (len(sell_data) != 0):
raise Exception("pop() performed on empty sell stack")
symbol = sell_data["stock_symbol"]
shares_on_hand = cli_data.get_stock_held(user, symbol)
price = self.cache.quote(symbol, user)[0]
shares_to_sell = int(int(sell_data["dollars"]) / price.dollars)
if shares_to_sell <= shares_on_hand:
status = cli_data.commit_sell(user, symbol, price,
shares_to_sell)["status"]
succeeded = status == "SUCCESS"
except Exception as e:
print(f"\033[1;33mTrans-Server.commit_sell:{e}\033[0;0m")
pass
self.cli_data = cli_data
return succeeded
def commit_buy(self, data):
AuditLogBuilder("COMMIT_BUY", self._server_name,
AuditCommandType.userCommand).build(data).send()
succeeded = False
user = data["userid"]
cli_data = self.cli_data
try:
buy_data = cli_data.pop(user, "buy")
if (len(buy_data) != 0):
raise Exception("pop() performed on empty buy stack")
stock_symbol = buy_data["stock_symbol"]
price = self.cache.quote(stock_symbol, user)[0]
buy_amount = Currency(buy_data["dollars"]) + Currency(
buy_data["cents"])
status = cli_data.commit_buy(user, stock_symbol, price,
buy_amount)["status"]
succeeded = status == "SUCCESS"
except Exception as e:
print(f"\033[1;33mTrans-Server.commit_buy:{e}\033[0;0m")
pass
self.cli_data = cli_data
return succeeded
def add(self, data):
user = data["userid"]
AuditLogBuilder("ADD", self._server_name,
AuditCommandType.userCommand).build(data).send()
amount = data["amount"]
return self.cli_data.add_money(user, amount)
def transaction(self, conn):
# TODO: We should consider creating a queue for the incoming commands.
incoming_data = conn.recv(BUFFER_SIZE).decode()
if incoming_data == "":
return False
# DEBUG
# print(f"{incoming_data}")
try:
try:
data_payload_list = [json.loads(incoming_data)]
except ValueError as v:
data_payload_list = []
split_data = incoming_data.split("}{")
for partial_json_str in split_data:
json_str = partial_json_str
if (partial_json_str[0] != "{"):
json_str = "{" + json_str
if (partial_json_str[len(partial_json_str) - 1] != "}"):
json_str = json_str + "}"
json_data = json.loads(json_str)
data_payload_list.append(json_data)
for data in data_payload_list:
print(f"\033[1;32mTrans-Server:{data}\033[0;0m")
if (type(data) == str):
data = json.loads(data)
if (not self.check_session(data)):
conn.send(
str.encode(
f"FAILED! user is not authenticated for the request | {data}"
))
return False
command = data["Command"]
if command == "LOGIN":
resp = self.authenticate(data)
data["Succeeded"] = resp["status"] == "SUCCESS"
data["session"] = resp["session"]
elif command == "ADD":
data["Succeeded"] = self.add(data)
elif command == "QUOTE":
data["Succeeded"] = self.quote(data)
elif command == "BUY":
data["Succeeded"] = self.buy(data)
elif command == "COMMIT_BUY":
data["Succeeded"] = self.commit_buy(data)
elif command == "CANCEL_BUY":
data["Succeeded"] = self.cancel_buy(data)
elif command == "SELL":
data["Succeeded"] = self.sell(data)
elif command == "COMMIT_SELL":
data["Succeeded"] = self.commit_sell(data)
elif command == "CANCEL_SELL":
data["Succeeded"] = self.cancel_sell(data)
elif command == "SET_BUY_AMOUNT":
data["Succeeded"] = self.set_buy_amount(data)
elif command == "CANCEL_SET_BUY":
data["Succeeded"] = self.cancel_set_buy(data)
elif command == "SET_BUY_TRIGGER":
data["Succeeded"] = self.set_buy_trigger(data)
elif command == "SET_SELL_AMOUNT":
data["Succeeded"] = self.set_sell_amount(data)
elif command == "CANCEL_SET_SELL":
data["Succeeded"] = self.cancel_set_sell(data)
elif command == "SET_SELL_TRIGGER":
data["Succeeded"] = self.set_sell_trigger(data)
elif command == "DISPLAY_SUMMARY":
data["Data"] = self.display_summary(data)
# Echo back JSON with new attributes
conn.send(str.encode(json.dumps(data, cls=Currency)))
except Exception as e:
print(f"\033[1;31mTrans-Server.transaction:{e}\033[0;0m")
raise e # TODO: this raise function means nothing below it is accessible, needs reworking
print(f"\033[1;31mTrans-Server.transaction:{e}\033[0;0m")
AuditLogBuilder("ERROR", self._server_name,
AuditCommandType.errorEvent).build({
"errorMessage":
str(e)
}).send()
conn.send(str.encode(f"FAILED! | {data}"))
return False
return True
