Files
nutshell/cashu/core/helpers.py
callebtc 0490f20932 Wallet: Lightning interface (#318)
* mint does not start yet

* fix import

* revert mint db migrations

* handle zero fee case

* cli: adjust fee message

* wallet: replace requests with httpx

* clean up

* rename http client decorator

* fix pending check in main, todo: TEST PROXIES WITH HTTPX

* fix up

* use httpx for nostr as well

* update packages to same versions as https://github.com/lnbits/lnbits/pull/1609/files

* fix proof deserialization

* check for string

* tests passing

* adjust wallet api tests

* lockfile

* add correct responses to Lightning interface and delete melt_id for proofs for which the payent has failed

* fix create_invoice checking_id response

* migrations atomic

* proofs are stored automatically when created

* make format

* use bolt11 lib

* stricter type checking

* add fee response to payments

* assert fees in test_melt

* test that mint_id and melt_id is stored correctly in proofs and proofs_used

* remove traces

* refactor: Lightning interface into own file and LedgerCrud with typing

* fix tests

* fix payment response

* rename variable
2023-10-21 14:38:16 +02:00

62 lines
1.7 KiB
Python

import asyncio
import math
from functools import partial, wraps
from typing import List
from ..core.base import BlindedSignature, Proof
from ..core.settings import settings
def sum_proofs(proofs: List[Proof]):
return sum([p.amount for p in proofs])
def sum_promises(promises: List[BlindedSignature]):
return sum([p.amount for p in promises])
def async_wrap(func):
@wraps(func)
async def run(*args, loop=None, executor=None, **kwargs):
if loop is None:
loop = asyncio.get_event_loop()
partial_func = partial(func, *args, **kwargs)
return await loop.run_in_executor(executor, partial_func)
return run
def async_unwrap(to_await):
async_response = []
async def run_and_capture_result():
r = await to_await
async_response.append(r)
loop = asyncio.get_event_loop()
coroutine = run_and_capture_result()
loop.run_until_complete(coroutine)
return async_response[0]
def fee_reserve(amount_msat: int, internal=False) -> int:
"""Function for calculating the Lightning fee reserve"""
if internal:
return 0
return max(
int(settings.lightning_reserve_fee_min),
int(amount_msat * settings.lightning_fee_percent / 100.0),
)
def calculate_number_of_blank_outputs(fee_reserve_sat: int):
"""Calculates the number of blank outputs used for returning overpaid fees.
The formula ensures that any overpaid fees can be represented by the blank outputs,
see NUT-08 for details.
"""
assert fee_reserve_sat >= 0, "Fee reserve can't be negative."
if fee_reserve_sat == 0:
return 0
return max(math.ceil(math.log2(fee_reserve_sat)), 1)