mirror of
https://github.com/aljazceru/nutshell.git
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25f0763f94
- use `{...}` instead of `set([...])`
- do not use `class Foo(object):`, just use `class Foo:`
- do not specify default flags (`"r"`) for `open()`
71 lines
2.0 KiB
Python
71 lines
2.0 KiB
Python
import asyncio
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import math
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from functools import partial, wraps
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from typing import List
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from ..core.base import Amount, BlindedSignature, Proof, Unit
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from ..core.settings import settings
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def amount_summary(proofs: List[Proof], unit: Unit) -> str:
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amounts_we_have = [
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(amount, len([p for p in proofs if p.amount == amount]))
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for amount in {p.amount for p in proofs}
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]
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amounts_we_have.sort(key=lambda x: x[0])
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return (
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f"{', '.join([f'{Amount(unit, a).str()} ({c}x)' for a, c in amounts_we_have])}"
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)
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def sum_proofs(proofs: List[Proof]):
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return sum([p.amount for p in proofs])
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def sum_promises(promises: List[BlindedSignature]):
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return sum([p.amount for p in promises])
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def async_wrap(func):
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@wraps(func)
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async def run(*args, loop=None, executor=None, **kwargs):
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if loop is None:
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loop = asyncio.get_event_loop()
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partial_func = partial(func, *args, **kwargs)
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return await loop.run_in_executor(executor, partial_func)
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return run
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def async_unwrap(to_await):
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async_response = []
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async def run_and_capture_result():
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r = await to_await
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async_response.append(r)
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loop = asyncio.get_event_loop()
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coroutine = run_and_capture_result()
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loop.run_until_complete(coroutine)
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return async_response[0]
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def fee_reserve(amount_msat: int) -> int:
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"""Function for calculating the Lightning fee reserve"""
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return max(
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int(settings.lightning_reserve_fee_min),
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int(amount_msat * settings.lightning_fee_percent / 100.0),
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)
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def calculate_number_of_blank_outputs(fee_reserve_sat: int):
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"""Calculates the number of blank outputs used for returning overpaid fees.
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The formula ensures that any overpaid fees can be represented by the blank outputs,
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see NUT-08 for details.
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"""
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assert fee_reserve_sat >= 0, "Fee reserve can't be negative."
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if fee_reserve_sat == 0:
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return 0
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return max(math.ceil(math.log2(fee_reserve_sat)), 1)
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