Porsche Chen
360533393f
Major Features: - ✅ Multi-tenant architecture (tenant isolation) - ✅ Employee CRUD with lifecycle management (onboarding/offboarding) - ✅ Department tree structure with email domain management - ✅ Company info management (single-record editing) - ✅ System functions CRUD (permission management) - ✅ Email account management (multi-account per employee) - ✅ Keycloak SSO integration (auth.lab.taipei) - ✅ Redis session storage (10.1.0.254:6379) - Solves Cookie 4KB limitation - Cross-system session sharing - Sliding expiration (8 hours) - Automatic token refresh Technical Stack: Backend: - FastAPI + SQLAlchemy - PostgreSQL 16 (10.1.0.20:5433) - Keycloak Admin API integration - Docker Mailserver integration (SSH) - Alembic migrations Frontend: - Next.js 14 (App Router) - NextAuth 4 with Keycloak Provider - Redis session storage (ioredis) - Tailwind CSS Infrastructure: - Redis 7 (10.1.0.254:6379) - Session + Cache - Keycloak 26.1.0 (auth.lab.taipei) - Docker Mailserver (10.1.0.254) Architecture Highlights: - Session管理由 Keycloak + Redis 統一控制 - 支援多系統 (HR/WebMail/Calendar/Drive/Office) 共享 session - Token 自動刷新,異質服務整合 - 未來可無縫遷移到雲端 Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
53 lines
1.2 KiB
Python
53 lines
1.2 KiB
Python
"""
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資料庫連線管理
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"""
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from sqlalchemy import create_engine
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from sqlalchemy.orm import sessionmaker, Session
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from typing import Generator
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from app.core.config import settings
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# 延遲初始化避免模組導入時就連接資料庫
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_engine = None
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_SessionLocal = None
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def get_engine():
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"""獲取資料庫引擎 (延遲初始化)"""
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global _engine
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if _engine is None:
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_engine = create_engine(
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settings.DATABASE_URL,
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echo=settings.DATABASE_ECHO,
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pool_pre_ping=True,
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pool_size=10,
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max_overflow=20,
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)
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return _engine
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def get_session_local():
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"""獲取 Session 工廠 (延遲初始化)"""
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global _SessionLocal
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if _SessionLocal is None:
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_SessionLocal = sessionmaker(
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autocommit=False,
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autoflush=False,
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bind=get_engine(),
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)
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return _SessionLocal
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# 向後兼容
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engine = property(lambda self: get_engine())
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SessionLocal = property(lambda self: get_session_local())
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def get_db() -> Generator[Session, None, None]:
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"""
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取得資料庫 Session
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用於 FastAPI 依賴注入
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"""
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db = get_session_local()()
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try:
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yield db
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finally:
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db.close()
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