def get_pair_info(self, pair: Pair) -> PairData:
if not self.is_pair_exists(pair):
raise PairNotExistsException(pair)
pair_data = self._get_data[pair]
mid = (Decimal(str(pair_data["Bid"])) +
Decimal(str(pair_data["Ask"]))) / Decimal("2")
try:
ts_without_ms = pair_data["TimeStamp"].split(".")[0]
last_trade_at = datetime.strptime(ts_without_ms,
"%Y-%m-%dT%H:%M:%S")
except ValueError:
raise APIChangedException("TimeStamp format.")
if pair_data["Low"] and pair_data["High"]:
low24h = Decimal(str(pair_data["Low"]))
high24h = Decimal(str(pair_data["High"]))
else:
low24h = high24h = None
rate_open = Decimal(str(
pair_data["PrevDay"])) if pair_data["PrevDay"] else None
return PairData(
pair=pair,
rate=mid,
rate_open=rate_open,
low24h=low24h,
high24h=high24h,
last_trade_at=last_trade_at,
)
def get_pair_info(self, pair: Pair) -> PairData:
if not self.is_pair_exists(pair):
raise PairNotExistsException(pair)
return PairData(
pair=pair,
rate=Decimal(str(self._get_data["rates"][pair.to_currency.code])),
last_trade_at=datetime.fromtimestamp(self._get_data["timestamp"]),
)
def test_reverse_pair_data(self):
pair_data = PairData(
pair=Pair(ECurrency("BTC"), ECurrency("USD")),
rate=Decimal("1") / Decimal("3"),
last_trade_at=datetime(2019, 3, 9, 12),
rate_open=Decimal("1") / Decimal("2"),
low24h=Decimal("1") / Decimal("4"),
high24h=Decimal("1") / Decimal("8"),
)
pair_data_reversed = PairData(
pair=Pair(ECurrency("USD"), ECurrency("BTC")),
rate=Decimal("3"),
last_trade_at=datetime(2019, 3, 9, 12),
rate_open=Decimal("2"),
low24h=Decimal("4"),
high24h=Decimal("8"),
)
self.assertEqual(reverse_pair_data(pair_data), pair_data_reversed)
def test_get_pair_info(self):
pair = Pair(ECurrency("USD"), ECurrency("EUR"))
self.assertEqual(
OpenExchangeRatesExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("0.8792"),
rate_open=None,
last_trade_at=datetime(2019, 3, 21, 21, 0),
),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("EUR"), ECurrency("USD"))
self.assertEqual(
FixerExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("1.137314"),
rate_open=None,
last_trade_at=datetime(2019, 3, 21, 20, 47, 5),
),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("USD"), ECurrency("SYP"))
self.assertEqual(
SpTodayExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("2105"),
rate_open=None,
last_trade_at=datetime(2019, 3, 17, 22, 14, 15, 0),
),
)
def get_pair_info(self, pair: Pair) -> PairData:
if not self.is_pair_exists(pair):
raise PairNotExistsException(pair)
request_pair = f"{pair.from_currency}{pair.to_currency}".lower()
try:
response = requests.get(
f"https://api.bitfinex.com/v1/pubticker/{request_pair}")
response.raise_for_status()
data = response.json()
except (requests.exceptions.RequestException, ValueError) as e:
raise APIErrorException(e)
try:
schema = {
"type": "object",
"properties": {
"mid": {
"type": "string"
},
"low": {
"type": "string"
},
"high": {
"type": "string"
},
"timestamp": {
"type": "string"
},
},
"required": ["mid", "low", "high", "timestamp"],
}
validate(data, schema)
except ValidationError as e:
raise APIErrorException(e)
try:
rate = Decimal(data["mid"])
low = Decimal(data["low"])
high = Decimal(data["high"])
last_trade_at = float(data["timestamp"])
except (DecimalException, ValueError) as e:
raise APIErrorException(e)
return PairData(
pair=pair,
rate=rate,
low24h=low,
high24h=high,
last_trade_at=datetime.fromtimestamp(last_trade_at),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("BTC"), ECurrency("THB"))
self.assertEqual(
SatangExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("304799.5"),
last_trade_at=datetime(2020, 2, 17, 22, 14, 15),
rate_open=None,
low24h=None,
high24h=None,
),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("BTC"), ECurrency("THB"))
self.assertEqual(
BitkubExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("300353.515"),
rate_open=None,
low24h=Decimal("281470"),
high24h=Decimal("304000"),
last_trade_at=datetime(2019, 3, 17, 22, 14, 15, 0),
),
)
def test_null_high_low(self):
pair = Pair(ECurrency("BTC"), ECurrency("USD"))
self.assertEqual(
BittrexExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("5132.308"),
rate_open=Decimal("5001.301"),
low24h=None,
high24h=None,
last_trade_at=datetime(2019, 4, 7, 7, 54, 34),
),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("BTC"), ECurrency("USD"))
self.assertEqual(
BittrexExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("3909.439"),
rate_open=Decimal("3879.0"),
low24h=Decimal("3773.806"),
high24h=Decimal("3923.994"),
last_trade_at=datetime(2019, 3, 9, 13, 47, 19, 0),
),
)
def test_get_pair_info(self):
pair = Pair(ECurrency("BTC"), ECurrency("USD"))
self.assertEqual(
BitfinexExchange().get_pair_info(pair),
PairData(
pair=pair,
rate=Decimal("3996.05"),
rate_open=None,
low24h=Decimal("3850.0"),
high24h=Decimal("4021.0"),
last_trade_at=datetime(2019, 3, 9, 11, 21, 12, 996645),
),
)
def get_pair_info(self, pair: Pair) -> PairData:
if not self.is_pair_exists(pair):
raise PairNotExistsException(pair)
pair_data = self._get_data[pair]
mid = (
Decimal(str(pair_data["ask"]["price"]))
+ Decimal(str(pair_data["bid"]["price"]))
) / Decimal("2")
low24h = high24h = None
return PairData(
pair=pair,
rate=mid,
low24h=low24h,
high24h=high24h,
last_trade_at=datetime.utcnow(),
)
def test_ok(self):
pair_data = PairData(
pair=Pair(ECurrency("BTC"), ECurrency("USD")),
rate=Decimal("1") / Decimal("3"),
last_trade_at=datetime(2019, 3, 9, 12),
rate_open=Decimal("1") / Decimal("2"),
low24h=Decimal("1") / Decimal("4"),
high24h=Decimal("1") / Decimal("8"),
)
rate_obj = rate_from_pair_data(pair_data, exchange_id=1)
inst = inspect(rate_obj)
self.assertSetEqual(
{c_attr.key
for c_attr in inst.mapper.column_attrs},
{
"id",
"exchange_id",
"from_currency_id",
"to_currency_id",
"rate",
"rate_open",
"low24h",
"high24h",
"last_trade_at",
"created_at",
"modified_at",
},
)
self.assertEqual(rate_obj.exchange_id, 1)
self.assertEqual(rate_obj.from_currency.code,
pair_data.pair.from_currency.code)
self.assertEqual(rate_obj.to_currency.code,
pair_data.pair.to_currency.code)
self.assertEqual(rate_obj.rate, pair_data.rate)
self.assertEqual(rate_obj.rate_open, pair_data.rate_open)
self.assertEqual(rate_obj.low24h, pair_data.low24h)
self.assertEqual(rate_obj.high24h, pair_data.high24h)
self.assertEqual(rate_obj.last_trade_at, pair_data.last_trade_at)
def get_pair_info(self, pair: Pair) -> PairData:
if not self.is_pair_exists(pair):
raise PairNotExistsException(pair)
pair_data = self._get_data[pair]
mid = (Decimal(str(pair_data["lowestAsk"])) +
Decimal(str(pair_data["highestBid"]))) / Decimal("2")
if pair_data["low24hr"] and pair_data["high24hr"]:
low24h = Decimal(str(pair_data["low24hr"]))
high24h = Decimal(str(pair_data["high24hr"]))
else:
low24h = high24h = None
return PairData(
pair=pair,
rate=mid,
low24h=low24h,
high24h=high24h,
last_trade_at=datetime.utcnow(),
)