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speed-up wallet.get_full_history: cache coin_price

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SomberNight 2018-03-06 16:56:51 +01:00
parent d002549176
commit db0e3cd209
1 changed files with 12 additions and 3 deletions
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15
lib/wallet.py
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@ -229,6 +229,8 @@ class Abstract_Wallet(PrintError):
self.invoices = InvoiceStore(self.storage)
self.contacts = Contacts(self.storage)
self.coin_price_cache = {}
def diagnostic_name(self):
return self.basename()
@ -1757,15 +1759,22 @@ class Abstract_Wallet(PrintError):
Acquisition price of a coin.
This assumes that either all inputs are mine, or no input is mine.
"""
cache_key = "{}:{}:{}".format(str(txid), str(ccy), str(txin_value))
result = self.coin_price_cache.get(cache_key, None)
if result is not None:
return result
if self.txi.get(txid, {}) != {}:
return self.average_price(txid, price_func, ccy) * txin_value/Decimal(COIN)
result = self.average_price(txid, price_func, ccy) * txin_value/Decimal(COIN)
else:
fiat_value = self.get_fiat_value(txid, ccy)
if fiat_value is not None:
return fiat_value
result = fiat_value
else:
p = self.price_at_timestamp(txid, price_func)
return p * txin_value/Decimal(COIN)
result = p * txin_value/Decimal(COIN)
self.coin_price_cache[cache_key] = result
return result
class Simple_Wallet(Abstract_Wallet):
# wallet with a single keystore