tMerge pull request #4049 from SomberNight/cache_coin_price - electrum - Electrum Bitcoin wallet
HTML git clone https://git.parazyd.org/electrum
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---
DIR commit 646044b43122e6523253fabc2702b41101bfc5d7
DIR parent dc2bb7d81f0da8b290954ba11a27ebeb8f4a07e8
HTML Author: ThomasV <thomasv@electrum.org>
Date: Tue, 6 Mar 2018 18:23:02 +0100
Merge pull request #4049 from SomberNight/cache_coin_price
speed-up wallet.get_full_history: cache coin_price
Diffstat:
M lib/wallet.py | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
---
DIR diff --git a/lib/wallet.py b/lib/wallet.py
t@@ -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()
t@@ -1757,8 +1759,14 @@ 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)
+ self.coin_price_cache[cache_key] = result
+ return result
else:
fiat_value = self.get_fiat_value(txid, ccy)
if fiat_value is not None:
t@@ -1767,6 +1775,7 @@ class Abstract_Wallet(PrintError):
p = self.price_at_timestamp(txid, price_func)
return p * txin_value/Decimal(COIN)
+
class Simple_Wallet(Abstract_Wallet):
# wallet with a single keystore