mirror of
https://github.com/aljazceru/nutshell.git
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e846acf946
* add websockets for quote updates * add test (not working) * wip: emit events to everyone * wip: emit events to everyone * wip, lots of things broken but invoice callback works * wip * add wip files * tests almost passing * add task * refactor nut constants * startup fix * works with old mints * wip cli * fix mypy * remove automatic invoice test now with websockets * remove comment * better logging * send back response * add rate limiter to websocket * add rate limiter to subscriptions * refactor websocket ratelimit * websocket tests * subscription kinds * doesnt start * remove circular import * update * fix mypy * move test file in test because it fails if it runs later... dunno why * adjust websocket NUT-06 settings * local import and small fix * disable websockets in CLI if "no_check" is selected * move subscription test to where it was * check proof state with callback, add tests * tests: run mint fixture per module instead of per session * subscription command name fix * test per session again * update test race conditions * fix tests * clean up * tmp * fix db issues and remove cached secrets * fix tests * blindly try pipeline * remove comments * comments
97 lines
2.9 KiB
Python
97 lines
2.9 KiB
Python
from fastapi import WebSocket, status
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from fastapi.responses import JSONResponse
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from limits import RateLimitItemPerMinute
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from loguru import logger
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from slowapi import Limiter
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from slowapi.util import get_remote_address
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from starlette.requests import Request
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from ..core.settings import settings
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def _rate_limit_exceeded_handler(request: Request, exc: Exception) -> JSONResponse:
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remote_address = get_remote_address(request)
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logger.warning(
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f"Rate limit {settings.mint_global_rate_limit_per_minute}/minute exceeded: {remote_address}"
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)
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return JSONResponse(
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status_code=status.HTTP_429_TOO_MANY_REQUESTS,
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content={"detail": "Rate limit exceeded."},
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)
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def get_remote_address_excluding_local(request: Request) -> str:
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remote_address = get_remote_address(request)
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if remote_address == "127.0.0.1":
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return ""
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return remote_address
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limiter_global = Limiter(
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key_func=get_remote_address_excluding_local,
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strategy="fixed-window-elastic-expiry",
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default_limits=[f"{settings.mint_global_rate_limit_per_minute}/minute"],
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enabled=settings.mint_rate_limit,
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)
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limiter = Limiter(
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key_func=get_remote_address_excluding_local,
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strategy="fixed-window-elastic-expiry",
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default_limits=[f"{settings.mint_transaction_rate_limit_per_minute}/minute"],
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enabled=settings.mint_rate_limit,
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)
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def assert_limit(identifier: str):
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"""Custom rate limit handler that accepts a string identifier
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and raises an exception if the rate limit is exceeded. Uses the
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setting `mint_transaction_rate_limit_per_minute` for the rate limit.
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Args:
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identifier (str): The identifier to use for the rate limit. IP address for example.
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Raises:
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Exception: If the rate limit is exceeded.
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"""
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global limiter
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success = limiter._limiter.hit(
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RateLimitItemPerMinute(settings.mint_transaction_rate_limit_per_minute),
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identifier,
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)
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if not success:
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logger.warning(
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f"Rate limit {settings.mint_transaction_rate_limit_per_minute}/minute exceeded: {identifier}"
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)
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raise Exception("Rate limit exceeded")
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def get_ws_remote_address(ws: WebSocket) -> str:
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"""Returns the ip address for the current websocket (or 127.0.0.1 if none found)
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Args:
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ws (WebSocket): The FastAPI WebSocket object.
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Returns:
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str: The ip address for the current websocket.
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"""
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if not ws.client or not ws.client.host:
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return "127.0.0.1"
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return ws.client.host
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def limit_websocket(ws: WebSocket):
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"""Websocket rate limit handler that accepts a FastAPI WebSocket object.
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This function will raise an exception if the rate limit is exceeded.
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Args:
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ws (WebSocket): The FastAPI WebSocket object.
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Raises:
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Exception: If the rate limit is exceeded.
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"""
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remote_address = get_ws_remote_address(ws)
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if remote_address == "127.0.0.1":
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return
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assert_limit(remote_address)
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