21a844cb8a
A previous `git pull --rebase origin main` dropped 177 local commits,
losing 3400+ files across admin-v2, backend, studio-v2, website,
klausur-service, and many other services. The partial restore attempt
(660295e2) only recovered some files.
This commit restores all missing files from pre-rebase ref 98933f5e
while preserving post-rebase additions (night-scheduler, night-mode UI,
NightModeWidget dashboard integration).
Restored features include:
- AI Module Sidebar (FAB), OCR Labeling, OCR Compare
- GPU Dashboard, RAG Pipeline, Magic Help
- Klausur-Korrektur (8 files), Abitur-Archiv (5+ files)
- Companion, Zeugnisse-Crawler, Screen Flow
- Full backend, studio-v2, website, klausur-service
- All compliance SDKs, agent-core, voice-service
- CI/CD configs, documentation, scripts
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
132 lines
3.7 KiB
Python
132 lines
3.7 KiB
Python
"""
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Classroom API - Database Persistence Service
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Handles hybrid storage: In-Memory + PostgreSQL for sessions.
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"""
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import logging
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from typing import Dict, Optional
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from fastapi import HTTPException
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from classroom_engine import LessonSession, LessonPhase
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logger = logging.getLogger(__name__)
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# Database imports (Feature f22)
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try:
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from classroom_engine.database import get_db, init_db, SessionLocal
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from classroom_engine.repository import SessionRepository
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DB_ENABLED = True
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except ImportError:
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DB_ENABLED = False
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SessionLocal = None
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logger.warning("Classroom DB not available, using in-memory storage only")
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# === Hybrid Storage: In-Memory + DB (Feature f22) ===
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# In-Memory fuer schnellen Zugriff, DB fuer Persistenz
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sessions: Dict[str, LessonSession] = {}
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_db_initialized = False
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def init_db_if_needed():
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"""Initialisiert DB und laedt aktive Sessions beim ersten Aufruf."""
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global _db_initialized
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if _db_initialized or not DB_ENABLED:
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return
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try:
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init_db()
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load_active_sessions_from_db()
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_db_initialized = True
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logger.info("Classroom DB initialized, loaded active sessions")
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except Exception as e:
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logger.error(f"Failed to initialize Classroom DB: {e}")
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def load_active_sessions_from_db():
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"""Laedt alle aktiven Sessions aus der DB in den Memory-Cache."""
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if not DB_ENABLED:
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return
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try:
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db = SessionLocal()
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repo = SessionRepository(db)
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# Lade alle nicht-beendeten Sessions
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from classroom_engine.db_models import LessonSessionDB, LessonPhaseEnum
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active_db_sessions = db.query(LessonSessionDB).filter(
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LessonSessionDB.current_phase != LessonPhaseEnum.ENDED
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).all()
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for db_session in active_db_sessions:
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session = repo.to_dataclass(db_session)
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sessions[session.session_id] = session
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logger.info(f"Loaded session {session.session_id} from DB")
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db.close()
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except Exception as e:
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logger.error(f"Failed to load sessions from DB: {e}")
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def persist_session(session: LessonSession):
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"""Speichert/aktualisiert Session in der DB."""
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if not DB_ENABLED:
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return
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try:
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db = SessionLocal()
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repo = SessionRepository(db)
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existing = repo.get_by_id(session.session_id)
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if existing:
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repo.update(session)
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else:
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repo.create(session)
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db.close()
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except Exception as e:
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logger.error(f"Failed to persist session {session.session_id}: {e}")
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def get_session_or_404(session_id: str) -> LessonSession:
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"""Holt eine Session oder wirft 404. Prueft auch DB bei Cache-Miss."""
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init_db_if_needed()
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session = sessions.get(session_id)
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if session:
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return session
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# Feature f22: Bei Cache-Miss aus DB laden
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if DB_ENABLED:
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try:
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db = SessionLocal()
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repo = SessionRepository(db)
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db_session = repo.get_by_id(session_id)
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if db_session:
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session = repo.to_dataclass(db_session)
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sessions[session.session_id] = session # In Cache laden
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db.close()
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return session
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db.close()
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except Exception as e:
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logger.error(f"Failed to load session {session_id} from DB: {e}")
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raise HTTPException(status_code=404, detail="Session nicht gefunden")
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def delete_session_from_db(session_id: str):
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"""Loescht Session aus der DB."""
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if not DB_ENABLED:
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return
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try:
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db = SessionLocal()
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repo = SessionRepository(db)
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repo.delete(session_id)
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db.close()
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except Exception as e:
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logger.error(f"Failed to delete session {session_id} from DB: {e}")
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