Files
Wizard/wizard_ai
marvinandClaude Opus 5.5 87dfcd55b7 Add resource limits, abuse protection and overload handling
Running games always continue; new work is refused when there is no
capacity; abuse is rejected immediately.

- Docker: CPU/memory/pids caps per container (overridable in .env);
  uvicorn message size, queue and concurrency limits
- Server abuse limits: connections total/per IP (close 1013), message
  rate per connection (token bucket, close 1008 on floods), lobby
  creation rate per IP
- Load monitor: event loop lag, CPU of the own cgroup quota and
  throttling, with hysteresis (normal/busy/overloaded, severe lag
  overloads immediately)
- Admission control: create_lobby and start_game refused while
  overloaded or MAX_ACTIVE_GAMES are running; server_status message
  broadcast on changes; /health reports load but stays ok
- AI bridge: timeout sent with requests, in-flight cap, circuit breaker
- AI service: bounded workers and queue ("overloaded"), drops expired
  requests, degrades to the heuristic agent when busy or too slow
- Website: busy notices, Create/Start disabled when not accepting
  games, slow retry when the server is full
- Tests for limiters, load levels, admission control and AI service
  limits; docs updated

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-27 12:51:46 +02:00
..
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wizard_ai

AI player for the Wizard server. The actual RL model is still to be implemented; this package provides everything around it.

  • agents/ — Agent interface (act(observation) -> action) plus RandomAgent, HeuristicAgent (baseline / fallback) and ModelAgent (wraps a Policy)
  • model/encoding.py — observation → fixed-size feature vector (FEATURE_SIZE), and the fixed action space (21 bids + 60 cards) with legal-action masks; works for 3–6 players
  • model/policy.py — the place to plug in the model: subclass Policy, implement select, update, save_weights/load, register with @register_policy. UniformPolicy is a placeholder so the pipeline runs end to end.
  • training/env.py — turn-based multi-agent environment around wizard_game (reward = score change per round / 100)
  • training/self_play.py — self-play loop collecting per-player trajectories and calling Policy.update, with checkpointing
  • training/evaluate.py — play agents against each other (mean score, win rate)
  • service/client.py — production: connects to ws://wizard_server:8083/internal/ai, answers decide requests, reconnects automatically
pip install -r requirements-dev.txt
python -m wizard_ai train --episodes 5000 --out models/latest
python -m wizard_ai evaluate --agents model,heuristic,random,random --games 200
python -m wizard_ai serve   # env: SERVER_URL, AI_SHARED_SECRET, AGENT, MODEL_PATH
pytest