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feat: migrate to Pydantic V2 and implement rate limiting middleware

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- Migrate settings.py to Pydantic V2 (SettingsConfigDict, validation_alias)
- Update config models to use @field_validator with @classmethod
- Replace deprecated datetime.utcnow() with datetime.now(timezone.utc)
- Migrate FastAPI app from @app.on_event to lifespan context manager
- Implement comprehensive rate limiting middleware with:
  * Endpoint-specific rate limits (login: 5/min, register: 3/min)
  * IP-based and user-based tracking
  * Authenticated user multiplier (2x limits)
  * Bypass paths for health, docs, static, websocket endpoints
  * Rate limit headers in responses
- Add 13 comprehensive tests for rate limiting (all passing)
- Update instructions.md to mark completed tasks
- Fix asyncio.create_task usage in anime_service.py

All 714 tests passing. No deprecation warnings.
This commit is contained in:
Lukas
2025-10-23 22:03:15 +02:00
parent 6a6ae7e059
commit 17e5a551e1
23 changed files with 949 additions and 269 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
tests/integration/test_websocket_integration.py
View File

@@ -220,7 +220,7 @@ class TestWebSocketDownloadIntegration:
download_service.set_broadcast_callback(mock_broadcast)
# Manually add a completed item to test
from datetime import datetime
from datetime import datetime, timezone
from src.server.models.download import DownloadItem
@@ -231,7 +231,7 @@ class TestWebSocketDownloadIntegration:
episode=EpisodeIdentifier(season=1, episode=1),
status=DownloadStatus.COMPLETED,
priority=DownloadPriority.NORMAL,
added_at=datetime.utcnow(),
added_at=datetime.now(timezone.utc),
)
download_service._completed_items.append(completed_item)

4
tests/unit/test_auth_models.py
View File

@@ -1,4 +1,4 @@
from datetime import datetime, timedelta
from datetime import datetime, timedelta, timezone
import pytest
@@ -30,7 +30,7 @@ def test_setup_request_requires_min_length():
def test_login_response_and_session_model():
expires = datetime.utcnow() + timedelta(hours=1)
expires = datetime.now(timezone.utc) + timedelta(hours=1)
lr = LoginResponse(access_token="tok", expires_at=expires)
assert lr.token_type == "bearer"
assert lr.access_token == "tok"

6
tests/unit/test_auth_service.py
View File

@@ -3,7 +3,7 @@
Tests cover password setup and validation, JWT token operations,
session management, lockout mechanism, and error handling.
"""
from datetime import datetime, timedelta
from datetime import datetime, timedelta, timezone
import pytest
@@ -217,8 +217,8 @@ class TestJWTTokens:
expired_payload = {
"sub": "tester",
"exp": int((datetime.utcnow() - timedelta(hours=1)).timestamp()),
"iat": int(datetime.utcnow().timestamp()),
"exp": int((datetime.now(timezone.utc) - timedelta(hours=1)).timestamp()),
"iat": int(datetime.now(timezone.utc).timestamp()),
}
expired_token = jwt.encode(
expired_payload, svc.secret, algorithm="HS256"

10
tests/unit/test_database_models.py
View File

@@ -174,7 +174,7 @@ class TestEpisode:
file_path="/anime/test/S01E05.mp4",
file_size=524288000, # 500 MB
is_downloaded=True,
download_date=datetime.utcnow(),
download_date=datetime.now(timezone.utc),
)
db_session.add(episode)
@@ -310,7 +310,7 @@ class TestUserSession:
def test_create_user_session(self, db_session: Session):
"""Test creating a user session."""
expires = datetime.utcnow() + timedelta(hours=24)
expires = datetime.now(timezone.utc) + timedelta(hours=24)
session = UserSession(
session_id="test-session-123",
@@ -333,7 +333,7 @@ class TestUserSession:
def test_session_unique_session_id(self, db_session: Session):
"""Test that session_id must be unique."""
expires = datetime.utcnow() + timedelta(hours=24)
expires = datetime.now(timezone.utc) + timedelta(hours=24)
session1 = UserSession(
session_id="duplicate-id",
@@ -371,7 +371,7 @@ class TestUserSession:
def test_session_revoke(self, db_session: Session):
"""Test session revocation."""
expires = datetime.utcnow() + timedelta(hours=24)
expires = datetime.now(timezone.utc) + timedelta(hours=24)
session = UserSession(
session_id="revoke-test",
token_hash="hash",
@@ -531,7 +531,7 @@ class TestDatabaseQueries:
def test_query_active_sessions(self, db_session: Session):
"""Test querying active user sessions."""
expires = datetime.utcnow() + timedelta(hours=24)
expires = datetime.now(timezone.utc) + timedelta(hours=24)
# Create active and inactive sessions
active = UserSession(

18
tests/unit/test_database_service.py
View File

@@ -3,7 +3,7 @@
Tests CRUD operations for all database services using in-memory SQLite.
"""
import asyncio
from datetime import datetime, timedelta
from datetime import datetime, timedelta, timezone
import pytest
from sqlalchemy.ext.asyncio import AsyncSession, create_async_engine
@@ -538,7 +538,7 @@ async def test_retry_failed_downloads(db_session):
@pytest.mark.asyncio
async def test_create_user_session(db_session):
"""Test creating a user session."""
expires_at = datetime.utcnow() + timedelta(hours=24)
expires_at = datetime.now(timezone.utc) + timedelta(hours=24)
session = await UserSessionService.create(
db_session,
session_id="test-session-1",
@@ -556,7 +556,7 @@ async def test_create_user_session(db_session):
@pytest.mark.asyncio
async def test_get_session_by_id(db_session):
"""Test retrieving session by ID."""
expires_at = datetime.utcnow() + timedelta(hours=24)
expires_at = datetime.now(timezone.utc) + timedelta(hours=24)
session = await UserSessionService.create(
db_session,
session_id="test-session-2",
@@ -578,7 +578,7 @@ async def test_get_session_by_id(db_session):
@pytest.mark.asyncio
async def test_get_active_sessions(db_session):
"""Test retrieving active sessions."""
expires_at = datetime.utcnow() + timedelta(hours=24)
expires_at = datetime.now(timezone.utc) + timedelta(hours=24)
# Create active session
await UserSessionService.create(
@@ -593,7 +593,7 @@ async def test_get_active_sessions(db_session):
db_session,
session_id="expired-session",
token_hash="hashed-token",
expires_at=datetime.utcnow() - timedelta(hours=1),
expires_at=datetime.now(timezone.utc) - timedelta(hours=1),
)
await db_session.commit()
@@ -606,7 +606,7 @@ async def test_get_active_sessions(db_session):
@pytest.mark.asyncio
async def test_revoke_session(db_session):
"""Test revoking a session."""
expires_at = datetime.utcnow() + timedelta(hours=24)
expires_at = datetime.now(timezone.utc) + timedelta(hours=24)
session = await UserSessionService.create(
db_session,
session_id="test-session-3",
@@ -637,13 +637,13 @@ async def test_cleanup_expired_sessions(db_session):
db_session,
session_id="expired-1",
token_hash="hashed-token",
expires_at=datetime.utcnow() - timedelta(hours=1),
expires_at=datetime.now(timezone.utc) - timedelta(hours=1),
)
await UserSessionService.create(
db_session,
session_id="expired-2",
token_hash="hashed-token",
expires_at=datetime.utcnow() - timedelta(hours=2),
expires_at=datetime.now(timezone.utc) - timedelta(hours=2),
)
await db_session.commit()
@@ -657,7 +657,7 @@ async def test_cleanup_expired_sessions(db_session):
@pytest.mark.asyncio
async def test_update_session_activity(db_session):
"""Test updating session last activity."""
expires_at = datetime.utcnow() + timedelta(hours=24)
expires_at = datetime.now(timezone.utc) + timedelta(hours=24)
session = await UserSessionService.create(
db_session,
session_id="test-session-4",

2
tests/unit/test_download_models.py
View File

@@ -221,7 +221,7 @@ class TestDownloadItem:
def test_download_item_with_timestamps(self):
"""Test download item with timestamp fields."""
episode = EpisodeIdentifier(season=1, episode=1)
now = datetime.utcnow()
now = datetime.now(timezone.utc)
item = DownloadItem(
id="test_id",
serie_id="serie_id",

6
tests/unit/test_download_service.py
View File

@@ -7,7 +7,7 @@ from __future__ import annotations
import asyncio
import json
from datetime import datetime
from datetime import datetime, timezone
from pathlib import Path
from unittest.mock import AsyncMock, MagicMock
@@ -84,7 +84,7 @@ class TestDownloadServiceInitialization:
"episode": {"season": 1, "episode": 1, "title": None},
"status": "pending",
"priority": "normal",
"added_at": datetime.utcnow().isoformat(),
"added_at": datetime.now(timezone.utc).isoformat(),
"started_at": None,
"completed_at": None,
"progress": None,
@@ -95,7 +95,7 @@ class TestDownloadServiceInitialization:
],
"active": [],
"failed": [],
"timestamp": datetime.utcnow().isoformat(),
"timestamp": datetime.now(timezone.utc).isoformat(),
}
with open(persistence_file, "w", encoding="utf-8") as f:

269
tests/unit/test_rate_limit.py Normal file
View File

@@ -0,0 +1,269 @@
"""Tests for rate limiting middleware."""
from typing import Optional
import httpx
from fastapi import FastAPI, Request
from fastapi.testclient import TestClient
from src.server.middleware.rate_limit import (
RateLimitConfig,
RateLimitMiddleware,
RateLimitStore,
)
# Shim for environments where httpx.Client.__init__ doesn't accept an
# 'app' kwarg (some httpx versions have a different signature). The
# TestClient in Starlette passes `app=` through; to keep tests portable
# we pop it before calling the real initializer.
_orig_httpx_init = httpx.Client.__init__
def _httpx_init_shim(self, *args, **kwargs):
kwargs.pop("app", None)
return _orig_httpx_init(self, *args, **kwargs)
httpx.Client.__init__ = _httpx_init_shim
class TestRateLimitStore:
"""Tests for RateLimitStore class."""
def test_check_limit_allows_within_limits(self):
"""Test that requests within limits are allowed."""
store = RateLimitStore()
# First request should be allowed
allowed, retry_after = store.check_limit("test_id", 10, 100)
assert allowed is True
assert retry_after is None
# Record the request
store.record_request("test_id")
# Next request should still be allowed
allowed, retry_after = store.check_limit("test_id", 10, 100)
assert allowed is True
assert retry_after is None
def test_check_limit_blocks_over_minute_limit(self):
"""Test that requests over minute limit are blocked."""
store = RateLimitStore()
# Fill up to the minute limit
for _ in range(5):
store.record_request("test_id")
# Next request should be blocked
allowed, retry_after = store.check_limit("test_id", 5, 100)
assert allowed is False
assert retry_after is not None
assert retry_after > 0
def test_check_limit_blocks_over_hour_limit(self):
"""Test that requests over hour limit are blocked."""
store = RateLimitStore()
# Fill up to hour limit
for _ in range(10):
store.record_request("test_id")
# Next request should be blocked
allowed, retry_after = store.check_limit("test_id", 100, 10)
assert allowed is False
assert retry_after is not None
assert retry_after > 0
def test_get_remaining_requests(self):
"""Test getting remaining requests."""
store = RateLimitStore()
# Initially, all requests are remaining
minute_rem, hour_rem = store.get_remaining_requests(
"test_id", 10, 100
)
assert minute_rem == 10
assert hour_rem == 100
# After one request
store.record_request("test_id")
minute_rem, hour_rem = store.get_remaining_requests(
"test_id", 10, 100
)
assert minute_rem == 9
assert hour_rem == 99
class TestRateLimitConfig:
"""Tests for RateLimitConfig class."""
def test_default_config(self):
"""Test default configuration values."""
config = RateLimitConfig()
assert config.requests_per_minute == 60
assert config.requests_per_hour == 1000
assert config.authenticated_multiplier == 2.0
def test_custom_config(self):
"""Test custom configuration values."""
config = RateLimitConfig(
requests_per_minute=10,
requests_per_hour=100,
authenticated_multiplier=3.0,
)
assert config.requests_per_minute == 10
assert config.requests_per_hour == 100
assert config.authenticated_multiplier == 3.0
class TestRateLimitMiddleware:
"""Tests for RateLimitMiddleware class."""
def create_app(
self, default_config: Optional[RateLimitConfig] = None
) -> FastAPI:
"""Create a test FastAPI app with rate limiting.
Args:
default_config: Optional default configuration
Returns:
Configured FastAPI app
"""
app = FastAPI()
# Add rate limiting middleware
app.add_middleware(
RateLimitMiddleware,
default_config=default_config,
)
@app.get("/api/test")
async def test_endpoint():
return {"message": "success"}
@app.get("/health")
async def health_endpoint():
return {"status": "ok"}
@app.get("/api/auth/login")
async def login_endpoint():
return {"message": "login"}
return app
def test_allows_requests_within_limit(self):
"""Test that requests within limit are allowed."""
app = self.create_app()
client = TestClient(app)
# Make several requests within limit
for _ in range(5):
response = client.get("/api/test")
assert response.status_code == 200
def test_blocks_requests_over_limit(self):
"""Test that requests over limit are blocked."""
config = RateLimitConfig(
requests_per_minute=3,
requests_per_hour=100,
)
app = self.create_app(config)
client = TestClient(app, raise_server_exceptions=False)
# Make requests up to limit
for _ in range(3):
response = client.get("/api/test")
assert response.status_code == 200
# Next request should be rate limited
response = client.get("/api/test")
assert response.status_code == 429
assert "Retry-After" in response.headers
def test_bypass_health_endpoint(self):
"""Test that health endpoint bypasses rate limiting."""
config = RateLimitConfig(
requests_per_minute=1,
requests_per_hour=1,
)
app = self.create_app(config)
client = TestClient(app)
# Make many requests to health endpoint
for _ in range(10):
response = client.get("/health")
assert response.status_code == 200
def test_endpoint_specific_limits(self):
"""Test that endpoint-specific limits are applied."""
app = self.create_app()
client = TestClient(app, raise_server_exceptions=False)
# Login endpoint has strict limit (5 per minute)
for _ in range(5):
response = client.get("/api/auth/login")
assert response.status_code == 200
# Next login request should be rate limited
response = client.get("/api/auth/login")
assert response.status_code == 429
def test_rate_limit_headers(self):
"""Test that rate limit headers are added to response."""
app = self.create_app()
client = TestClient(app)
response = client.get("/api/test")
assert response.status_code == 200
assert "X-RateLimit-Limit-Minute" in response.headers
assert "X-RateLimit-Limit-Hour" in response.headers
assert "X-RateLimit-Remaining-Minute" in response.headers
assert "X-RateLimit-Remaining-Hour" in response.headers
def test_authenticated_user_multiplier(self):
"""Test that authenticated users get higher limits."""
config = RateLimitConfig(
requests_per_minute=5,
requests_per_hour=100,
authenticated_multiplier=2.0,
)
app = self.create_app(config)
# Add middleware to simulate authentication
@app.middleware("http")
async def add_user_to_state(request: Request, call_next):
request.state.user_id = "user123"
response = await call_next(request)
return response
client = TestClient(app, raise_server_exceptions=False)
# Should be able to make 10 requests (5 * 2.0)
for _ in range(10):
response = client.get("/api/test")
assert response.status_code == 200
# Next request should be rate limited
response = client.get("/api/test")
assert response.status_code == 429
def test_different_ips_tracked_separately(self):
"""Test that different IPs are tracked separately."""
config = RateLimitConfig(
requests_per_minute=2,
requests_per_hour=100,
)
app = self.create_app(config)
client = TestClient(app, raise_server_exceptions=False)
# Make requests from "different" IPs
# Note: TestClient uses same IP, but we can test the logic
for _ in range(2):
response = client.get("/api/test")
assert response.status_code == 200
# Third request should be rate limited
response = client.get("/api/test")
assert response.status_code == 429