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58 lines
1.8 KiB
58 lines
1.8 KiB
from PyQt4.QtCore import SIGNAL |
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import decimal |
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import httplib |
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import json |
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import threading |
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class Exchanger(threading.Thread): |
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def __init__(self, parent): |
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threading.Thread.__init__(self) |
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self.daemon = True |
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self.parent = parent |
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self.quote_currencies = None |
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self.lock = threading.Lock() |
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# Do price discovery |
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self.start() |
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def exchange(self, btc_amount, quote_currency): |
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with self.lock: |
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if self.quote_currencies is None: |
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return None |
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quote_currencies = self.quote_currencies.copy() |
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if quote_currency not in quote_currencies: |
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return None |
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return btc_amount * quote_currencies[quote_currency] |
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def run(self): |
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self.discovery() |
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def discovery(self): |
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connection = httplib.HTTPSConnection('intersango.com') |
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connection.request("GET", "/api/ticker.php") |
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response = connection.getresponse() |
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if response.reason == httplib.responses[httplib.NOT_FOUND]: |
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return |
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response = json.loads(response.read()) |
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# 1 = BTC:GBP |
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# 2 = BTC:EUR |
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# 3 = BTC:USD |
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# 4 = BTC:PLN |
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quote_currencies = {} |
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try: |
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quote_currencies["GBP"] = self._lookup_rate(response, 1) |
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quote_currencies["EUR"] = self._lookup_rate(response, 2) |
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quote_currencies["USD"] = self._lookup_rate(response, 3) |
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with self.lock: |
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self.quote_currencies = quote_currencies |
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self.parent.emit(SIGNAL("refresh_balance()")) |
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except KeyError: |
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pass |
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def _lookup_rate(self, response, quote_id): |
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return decimal.Decimal(response[str(quote_id)]["last"]) |
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if __name__ == "__main__": |
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exch = Exchanger(("EUR", "USD", "GBP")) |
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print exch.exchange(1, "EUR") |
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