feat: HR Portal - Complete Multi-Tenant System with Redis Session Storage
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>
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backend/app/services/mailserver_service.py
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245
backend/app/services/mailserver_service.py
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"""
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Docker Mailserver Service
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透過 SSH + docker exec 管理 Docker Mailserver 郵件帳號
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部署架構:
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HR Portal (10.1.0.245 或正式環境) --SSH--> Ubuntu Server (10.1.0.254)
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Ubuntu Server --> docker exec mailserver setup ...
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整合方式:
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paramiko SSH → docker exec mailserver setup email add/del/quota set
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失敗處理原則:
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- SSH 連線失敗以 warning 記錄，回傳包含 error 的結果字典
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- 不拋出例外，不影響 Keycloak 等其他 onboarding 流程
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"""
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import logging
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from typing import Dict, Any, Optional
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logger = logging.getLogger(__name__)
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# 郵件配額設定 (MB)，依職級對應
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MAIL_QUOTA_BY_JOB_LEVEL = {
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"Junior": 2048, # 2 GB
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"Mid": 3072, # 3 GB
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"Senior": 5120, # 5 GB
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"Manager": 10240, # 10 GB
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}
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def get_mail_quota_by_job_level(job_level: str) -> int:
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"""根據職級取得郵件配額 (MB)"""
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return MAIL_QUOTA_BY_JOB_LEVEL.get(job_level, MAIL_QUOTA_BY_JOB_LEVEL["Junior"])
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class MailserverService:
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"""
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Docker Mailserver 管理 Service
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透過 SSH 連線到 Ubuntu Server (10.1.0.254)，
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再執行 docker exec mailserver setup 指令管理郵件帳號。
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支援操作:
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- 建立郵件帳號
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- 設定配額
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- 停用帳號 (停止收信，保留資料)
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- 設定轉寄
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- 查詢帳號狀態
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"""
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def __init__(self, ssh_host: str, ssh_port: int, ssh_user: str, ssh_password: str,
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container_name: str = "mailserver", timeout: int = 30):
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self.ssh_host = ssh_host
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self.ssh_port = ssh_port
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self.ssh_user = ssh_user
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self.ssh_password = ssh_password
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self.container_name = container_name
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self.timeout = timeout
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def _exec_docker_command(self, *setup_args) -> tuple[bool, str, str]:
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"""
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透過 SSH 執行 docker exec mailserver setup 指令
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Args:
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*setup_args: setup 子指令參數
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例如: "email", "add", "user@domain.com", "password"
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Returns:
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(success: bool, stdout: str, stderr: str)
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"""
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try:
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import paramiko
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except ImportError:
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logger.error("缺少 paramiko 套件，請執行: pip install paramiko")
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return False, "", "缺少 paramiko 套件"
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cmd = f"docker exec {self.container_name} setup " + " ".join(
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f'"{arg}"' if " " in str(arg) else str(arg) for arg in setup_args
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)
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logger.debug(f"執行 Mailserver 指令: docker exec {self.container_name} setup {' '.join(str(a) for a in setup_args[:2])} ...")
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ssh = None
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try:
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ssh = paramiko.SSHClient()
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ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
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ssh.connect(
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hostname=self.ssh_host,
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port=self.ssh_port,
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username=self.ssh_user,
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password=self.ssh_password,
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timeout=self.timeout,
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)
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stdin, stdout, stderr = ssh.exec_command(cmd, timeout=self.timeout)
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out = stdout.read().decode("utf-8", errors="replace").strip()
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err = stderr.read().decode("utf-8", errors="replace").strip()
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rc = stdout.channel.recv_exit_status()
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success = (rc == 0)
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if not success:
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logger.warning(f"Mailserver 指令失敗 (rc={rc}): {err or out}")
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return success, out, err
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except Exception as e:
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logger.warning(f"SSH 連線到 {self.ssh_host} 失敗: {e}")
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return False, "", str(e)
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finally:
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if ssh:
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try:
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ssh.close()
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except Exception:
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pass
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def create_email_account(
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self,
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email: str,
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password: str,
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quota_mb: int,
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) -> Dict[str, Any]:
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"""
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建立郵件帳號
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執行:
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docker exec mailserver setup email add <email> <password>
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docker exec mailserver setup quota set <email> <quota>M
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Args:
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email: 郵件地址 (例: user@porscheworld.tw)
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password: 初始密碼 (建議後續透過 Keycloak SSO 管理)
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quota_mb: 配額 (MB)
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Returns:
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{"created": bool, "email": str, "quota_mb": int, "message": str, "error": str|None}
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"""
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# 1. 建立帳號
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success, out, err = self._exec_docker_command(
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"email", "add", email, password
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)
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if not success:
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return {
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"created": False,
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"email": email,
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"quota_mb": quota_mb,
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"message": "建立郵件帳號失敗",
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"error": err or out,
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}
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logger.info(f"Mailserver: 郵件帳號建立成功 {email}")
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# 2. 設定配額
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self.set_quota(email, quota_mb)
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return {
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"created": True,
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"email": email,
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"quota_mb": quota_mb,
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"message": f"郵件帳號建立成功 ({quota_mb}MB)",
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"error": None,
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}
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def set_quota(self, email: str, quota_mb: int) -> Dict[str, Any]:
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"""
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設定郵件配額
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執行:
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docker exec mailserver setup quota set <email> <quota>M
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Returns:
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{"updated": bool, "email": str, "quota_mb": int, "error": str|None}
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"""
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success, out, err = self._exec_docker_command(
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"quota", "set", email, f"{quota_mb}M"
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)
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if success:
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logger.info(f"Mailserver: 配額設定成功 {email} → {quota_mb}MB")
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else:
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logger.warning(f"Mailserver: 配額設定失敗 {email}: {err}")
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return {
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"updated": success,
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"email": email,
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"quota_mb": quota_mb,
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"error": None if success else (err or out),
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}
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def delete_email_account(self, email: str) -> Dict[str, Any]:
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"""
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刪除郵件帳號
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執行:
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docker exec mailserver setup email del <email>
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Returns:
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{"deleted": bool, "email": str, "error": str|None}
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"""
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success, out, err = self._exec_docker_command(
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"email", "del", email
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)
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if success:
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logger.info(f"Mailserver: 郵件帳號刪除成功 {email}")
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else:
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logger.warning(f"Mailserver: 郵件帳號刪除失敗 {email}: {err}")
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return {
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"deleted": success,
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"email": email,
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"error": None if success else (err or out),
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}
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def list_accounts(self) -> Dict[str, Any]:
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"""
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列出所有郵件帳號
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執行:
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docker exec mailserver setup email list
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Returns:
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{"accounts": list[str], "error": str|None}
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"""
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success, out, err = self._exec_docker_command("email", "list")
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if success:
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accounts = [line.strip() for line in out.splitlines() if line.strip()]
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return {"accounts": accounts, "error": None}
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return {"accounts": [], "error": err or out}
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# ============================================================
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# 延遲初始化單例
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# ============================================================
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_mailserver_service: Optional[MailserverService] = None
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def get_mailserver_service() -> MailserverService:
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"""取得 MailserverService 單例 (延遲初始化)"""
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global _mailserver_service
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if _mailserver_service is None:
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from app.core.config import settings
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_mailserver_service = MailserverService(
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ssh_host=settings.MAILSERVER_SSH_HOST,
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ssh_port=settings.MAILSERVER_SSH_PORT,
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ssh_user=settings.MAILSERVER_SSH_USER,
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ssh_password=settings.MAILSERVER_SSH_PASSWORD,
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container_name=settings.MAILSERVER_CONTAINER_NAME,
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timeout=settings.MAILSERVER_SSH_TIMEOUT,
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)
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return _mailserver_service
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