262 lines
8.6 KiB
Python
262 lines
8.6 KiB
Python
import asyncio
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import base64
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import hashlib
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import json
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import urllib.parse
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from collections.abc import AsyncGenerator
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from decimal import Decimal
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from typing import Any, Optional
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import httpx
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from loguru import logger
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from websockets.client import connect
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from lnbits.settings import settings
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from lnbits.utils.crypto import random_secret_and_hash
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from .base import (
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InvoiceResponse,
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PaymentPendingStatus,
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PaymentResponse,
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PaymentStatus,
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StatusResponse,
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Wallet,
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)
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class EclairError(Exception):
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pass
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class UnknownError(Exception):
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pass
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class EclairWallet(Wallet):
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def __init__(self):
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if not settings.eclair_url:
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raise ValueError("cannot initialize EclairWallet: missing eclair_url")
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if not settings.eclair_pass:
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raise ValueError("cannot initialize EclairWallet: missing eclair_pass")
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self.url = self.normalize_endpoint(settings.eclair_url)
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self.ws_url = f"ws://{urllib.parse.urlsplit(self.url).netloc}/ws"
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password = settings.eclair_pass
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encoded_auth = base64.b64encode(f":{password}".encode())
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auth = str(encoded_auth, "utf-8")
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self.headers = {
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"Authorization": f"Basic {auth}",
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"User-Agent": settings.user_agent,
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}
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self.client = httpx.AsyncClient(base_url=self.url, headers=self.headers)
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async def cleanup(self):
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try:
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await self.client.aclose()
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except RuntimeError as e:
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logger.warning(f"Error closing wallet connection: {e}")
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async def status(self) -> StatusResponse:
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try:
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r = await self.client.post("/globalbalance", timeout=5)
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r.raise_for_status()
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data = r.json()
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if len(data) == 0:
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return StatusResponse("no data", 0)
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if "error" in data:
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return StatusResponse(f"""Server error: '{data["error"]}'""", 0)
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if r.is_error or "total" not in data:
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return StatusResponse(f"Server error: '{r.text}'", 0)
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total = round(Decimal(data.get("total")), 8) * 100_000_000_000
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return StatusResponse(balance_msat=int(total), error_message=None)
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except json.JSONDecodeError:
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return StatusResponse("Server error: 'invalid json response'", 0)
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except Exception as exc:
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logger.warning(exc)
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return StatusResponse(f"Unable to connect to {self.url}.", 0)
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async def create_invoice(
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self,
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amount: int,
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memo: Optional[str] = None,
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description_hash: Optional[bytes] = None,
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unhashed_description: Optional[bytes] = None,
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**kwargs,
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) -> InvoiceResponse:
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data: dict[str, Any] = {
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"amountMsat": amount * 1000,
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}
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if kwargs.get("expiry"):
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data["expireIn"] = kwargs["expiry"]
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# Either 'description' (string) or 'descriptionHash' must be supplied
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if description_hash:
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data["descriptionHash"] = description_hash.hex()
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elif unhashed_description:
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data["descriptionHash"] = hashlib.sha256(unhashed_description).hexdigest()
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else:
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data["description"] = memo
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preimage, _ = random_secret_and_hash()
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data["paymentPreimage"] = preimage
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try:
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r = await self.client.post("/createinvoice", data=data, timeout=40)
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r.raise_for_status()
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data = r.json()
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if len(data) == 0:
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return InvoiceResponse(ok=False, error_message="no data")
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if "error" in data:
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return InvoiceResponse(
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ok=False, error_message=f"""Server error: '{data["error"]}'"""
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)
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if r.is_error:
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return InvoiceResponse(
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ok=False, error_message=f"Server error: '{r.text}'"
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)
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return InvoiceResponse(
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ok=True,
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checking_id=data["paymentHash"],
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payment_request=data["serialized"],
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preimage=preimage,
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)
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except json.JSONDecodeError:
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return InvoiceResponse(
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ok=False, error_message="Server error: 'invalid json response'"
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)
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except KeyError as exc:
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logger.warning(exc)
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return InvoiceResponse(
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ok=False, error_message="Server error: 'missing required fields'"
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)
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except Exception as exc:
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logger.warning(exc)
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return InvoiceResponse(
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ok=False, error_message=f"Unable to connect to {self.url}."
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)
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async def pay_invoice(self, bolt11: str, fee_limit_msat: int) -> PaymentResponse:
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try:
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r = await self.client.post(
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"/payinvoice",
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data={"invoice": bolt11, "blocking": True},
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timeout=None,
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)
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r.raise_for_status()
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data = r.json()
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if "error" in data:
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return PaymentResponse(error_message=data["error"])
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if r.is_error:
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return PaymentResponse(error_message=r.text)
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if data["type"] == "payment-failed":
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return PaymentResponse(ok=False, error_message="payment failed")
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checking_id = data["paymentHash"]
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preimage = data["paymentPreimage"]
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except json.JSONDecodeError:
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return PaymentResponse(
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error_message="Server error: 'invalid json response'"
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)
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except KeyError:
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return PaymentResponse(
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error_message="Server error: 'missing required fields'"
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)
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except Exception as exc:
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logger.info(f"Failed to pay invoice {bolt11}")
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logger.warning(exc)
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return PaymentResponse(error_message=f"Unable to connect to {self.url}.")
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payment_status: PaymentStatus = await self.get_payment_status(checking_id)
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success = True if payment_status.success else None
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return PaymentResponse(
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ok=success,
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checking_id=checking_id,
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fee_msat=payment_status.fee_msat,
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preimage=preimage,
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)
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async def get_invoice_status(self, checking_id: str) -> PaymentStatus:
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try:
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r = await self.client.post(
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"/getreceivedinfo",
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data={"paymentHash": checking_id},
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)
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r.raise_for_status()
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data = r.json()
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if r.is_error or "error" in data or data.get("status") is None:
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raise Exception("error in eclair response")
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statuses = {
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"received": True,
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"expired": False,
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"pending": None,
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}
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return PaymentStatus(statuses.get(data["status"]["type"]))
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except Exception:
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return PaymentPendingStatus()
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async def get_payment_status(self, checking_id: str) -> PaymentStatus:
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try:
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r = await self.client.post(
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"/getsentinfo",
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data={"paymentHash": checking_id},
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timeout=40,
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)
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r.raise_for_status()
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data = r.json()[-1]
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if r.is_error or "error" in data or data.get("status") is None:
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raise Exception("error in eclair response")
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fee_msat, preimage = None, None
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if data["status"]["type"] == "sent":
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fee_msat = -data["status"]["feesPaid"]
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preimage = data["status"]["paymentPreimage"]
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statuses = {
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"sent": True,
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"failed": False,
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"pending": None,
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}
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return PaymentStatus(
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statuses.get(data["status"]["type"]), fee_msat, preimage
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)
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except Exception:
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return PaymentPendingStatus()
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async def paid_invoices_stream(self) -> AsyncGenerator[str, None]:
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while settings.lnbits_running:
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try:
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async with connect(
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self.ws_url,
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extra_headers=[("Authorization", self.headers["Authorization"])],
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) as ws:
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while settings.lnbits_running:
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message = await ws.recv()
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message_json = json.loads(message)
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if message_json and message_json["type"] == "payment-received":
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yield message_json["paymentHash"]
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except Exception as exc:
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logger.error(
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f"lost connection to eclair invoices stream: '{exc}'"
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"retrying in 5 seconds"
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)
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await asyncio.sleep(5)
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