feat(updates): check Gitea automatically and deploy on owner confirmation

Add owner-only update controls, a read-only SSH checker and independent systemd deployment services. Build before maintenance; back up code and database; restore on failed deployment. Preserve runtime configuration and gate business writes during the switch.

backend/app/api/system_updates.py

@@ -0,0 +1,87 @@
+"""Installation-wide updates are restricted to the configured deployment owner."""
+from __future__ import annotations
+
+import asyncio
+import json
+from pathlib import Path
+from typing import Any
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from pydantic import BaseModel, Field
+
+from app.core.auth import check_permissions, get_current_user
+from app.models.user import User
+
+CONFIG_FILE = Path('/etc/replypier-updater/config.json')
+AGENT = '/opt/replypier-updater/cli.py'
+router = APIRouter()
+
+
+class UpdateRequest(BaseModel):
+    revision: str = Field(pattern=r'^[0-9a-f]{40}$')
+
+
+def installation_config() -> dict[str, Any] | None:
+    if not CONFIG_FILE.exists():
+        return None
+    return json.loads(CONFIG_FILE.read_text())
+
+
+def can_manage(user: User, cfg: dict[str, Any] | None) -> bool:
+    # super_admin is organization-scoped; other tenants must not deploy server code.
+    return bool(cfg and str(user.id) in cfg['owner_ids'] and check_permissions(user, ['super_admin']))
+
+
+def require_owner(user: User) -> dict[str, Any]:
+    cfg = installation_config()
+    if not can_manage(user, cfg):
+        raise HTTPException(status_code=403, detail='仅部署管理员可以管理系统更新。')
+    return cfg  # type: ignore[return-value]
+
+
+async def command(*args: str) -> dict[str, Any]:
+    proc = await asyncio.create_subprocess_exec(
+        '/usr/bin/python3', AGENT, *args,
+        stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.DEVNULL,
+    )
+    try:
+        stdout, _ = await asyncio.wait_for(proc.communicate(), timeout=15)
+    except TimeoutError:
+        proc.kill()
+        await proc.wait()
+        raise HTTPException(status_code=503, detail='更新服务响应超时，请刷新状态后再试。')
+    try:
+        result = json.loads(stdout)
+    except (ValueError, UnicodeDecodeError):
+        raise HTTPException(status_code=503, detail='更新服务响应异常，请检查服务器日志。')
+    if proc.returncode:
+        raise HTTPException(status_code=409, detail=result.get('error', '更新请求未被接受。'))
+    return result
+
+
+@router.get('')
+async def get_status(current_user: User = Depends(get_current_user)) -> dict[str, Any]:
+    cfg = installation_config()
+    if not can_manage(current_user, cfg):
+        return {'configured': bool(cfg), 'can_manage': False}
+    state_file = Path(cfg['state_dir']) / 'status.json'
+    if not state_file.exists():
+        raise HTTPException(status_code=503, detail='更新服务尚未初始化。')
+    state = json.loads(state_file.read_text())
+    latest = (state.get('latest') or {}).get('revision')
+    return {**state, 'configured': True, 'can_manage': True,
+            'repository_url': cfg['web_url'], 'branch': cfg['branch'],
+            'check_interval_minutes': 30,
+            'update_available': bool(latest and latest != state['current']['revision'] and not state.get('check_error'))}
+
+
+@router.post('/check', status_code=status.HTTP_202_ACCEPTED)
+async def check_updates(current_user: User = Depends(get_current_user)) -> dict[str, Any]:
+    require_owner(current_user)
+    return await command('request-check')
+
+
+@router.post('/apply', status_code=status.HTTP_202_ACCEPTED)
+async def apply_update(body: UpdateRequest, current_user: User = Depends(get_current_user)) -> dict[str, Any]:
+    require_owner(current_user)
+    return await command('request', '--revision', body.revision, '--actor', str(current_user.id))

backend/app/core/system_maintenance.py

@@ -0,0 +1,30 @@
+"""Gate business traffic during deployment and database recovery, including sockets."""
+import asyncio
+from pathlib import Path
+from starlette.types import ASGIApp, Receive, Scope, Send
+from starlette.responses import JSONResponse
+
+MAINTENANCE_FILE = Path('/var/lib/replypier-updater/maintenance')
+
+
+class SystemMaintenanceMiddleware:
+    def __init__(self, app: ASGIApp) -> None:
+        self.app = app
+
+    async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
+        path = scope.get('path', '')
+        exempt = path == '/health' or (path == '/api/v1/system-updates' and scope.get('method') == 'GET')
+        if scope['type'] in {'http', 'websocket'} and MAINTENANCE_FILE.exists() and not exempt:
+            if scope['type'] == 'websocket':
+                await send({'type': 'websocket.close', 'code': 1013})
+            else:
+                response = JSONResponse({'detail': '系统更新中，接待将在更新完成后恢复。'},
+                                        status_code=503, headers={'Retry-After': '5'})
+                await response(scope, receive, send)
+            return
+        await self.app(scope, receive, send)
+
+
+async def wait_for_deployment() -> None:
+    while MAINTENANCE_FILE.exists():
+        await asyncio.sleep(1)

backend/app/main.py

@@ -22,6 +22,7 @@ os.environ.setdefault('TOKENIZERS_PARALLELISM', 'false')
 from fastapi.staticfiles import StaticFiles
 import socketio
 from app.api import chat, organizations, users, ai_setup, knowledge, agent, notification, widget, widget_apps, user_groups, roles, analytics, jira, shopify, workflow, workflow_node, mcp_tool, file_upload, token, lead_capture, people, tickets
+from app.api import system_updates
 from app.api import help_center as help_center_api
 from app.api import help_center_images
 from app.api import channels as channels_api
@@ -113,6 +114,7 @@ async def startup_event(api: FastAPI):
     api.state.auto_closer_task = asyncio.create_task(run_auto_closer_loop())
 
 # Include routers
+app.include_router(system_updates.router, prefix=f"{settings.API_V1_STR}/system-updates", tags=["system-updates"])
 app.include_router(
     chat.router,
     prefix=f"{settings.API_V1_STR}/chats",
@@ -385,4 +387,6 @@ install_crawler_policy(app)
 from app.api.help_center_public import public_app
 from app.core.help_center_host import HelpCenterHostMiddleware
 
-app = socketio.ASGIApp(sio, HelpCenterHostMiddleware(app, public_app))
+from app.core.system_maintenance import SystemMaintenanceMiddleware
+
+app = SystemMaintenanceMiddleware(socketio.ASGIApp(sio, HelpCenterHostMiddleware(app, public_app)))

backend/app/workers/chat_auto_closer.py

@@ -22,6 +22,8 @@ from pathlib import Path
 # Add the parent directory to Python path to allow imports
 sys.path.append(str(Path(__file__).parent.parent.parent))
 
+from app.core.system_maintenance import wait_for_deployment
+
 from app.database import SessionLocal
 from app.repositories.session_to_agent import SessionToAgentRepository
 from app.core.logger import get_logger
@@ -64,6 +66,7 @@ async def run_auto_closer_loop():
         iteration = 0
         
         while True:
+            await wait_for_deployment()
             iteration += 1
             start_time = asyncio.get_event_loop().time()
             

backend/app/workers/run_knowledge_processor.py

@@ -27,6 +27,8 @@ from pathlib import Path
 # Add the parent directory to Python path to allow imports
 sys.path.append(str(Path(__file__).parent.parent.parent))
 
+from app.core.system_maintenance import wait_for_deployment
+
 from app.workers.knowledge_processor import run_processor
 from app.core.logger import get_logger
 from app.services.firebase import initialize_firebase
@@ -54,6 +56,7 @@ async def run_processor_loop():
         iteration = 0
         
         while True:
+            await wait_for_deployment()
             iteration += 1
             start_time = asyncio.get_event_loop().time()