| 1 | """Small extension contracts for a later distributed resilience layer.""" |
| 2 | from __future__ import annotations |
| 3 | |
| 4 | from typing import Protocol |
| 5 | |
| 6 | from app.contracts import McpAuthContext |
| 7 | |
| 8 | |
| 9 | class McpRateLimiter(Protocol): |
| 10 | """Authorize a call using a future shared/distributed rate-limit backend.""" |
| 11 | |
| 12 | async def authorize( |
| 13 | self, *, tool: str, auth: McpAuthContext, request_id: str |
| 14 | ) -> None: ... |
| 15 | |
| 16 | |
| 17 | class McpCircuitBreaker(Protocol): |
| 18 | """Track downstream health without prescribing an in-process implementation.""" |
| 19 | |
| 20 | async def before_call(self, *, dependency: str) -> None: ... |
| 21 | |
| 22 | async def record_success(self, *, dependency: str) -> None: ... |
| 23 | |
| 24 | async def record_failure(self, *, dependency: str) -> None: ... |