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mcp_manager.py
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executable file
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#!/usr/bin/env python3
"""
MCP Server Manager for Todo for AI
This script provides management functionality for the MCP server including:
- Starting and stopping the server
- Health checks and status monitoring
- Process management
- Configuration management
"""
import asyncio
import json
import logging
import os
import signal
import subprocess
import sys
import time
from pathlib import Path
from typing import Optional, Dict, Any
# Configure logging
logging.basicConfig(
level=logging.INFO,
format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
)
logger = logging.getLogger(__name__)
class MCPServerManager:
"""Manager for MCP Server lifecycle"""
def __init__(self):
self.backend_dir = Path(__file__).parent
self.project_root = self.backend_dir.parent
self.pid_file = self.project_root / '.mcp_server.pid'
self.log_file = self.project_root / 'logs' / 'mcp_server.log'
# MCP 服务现在通过 npm 包提供，不再使用 Python 实现
self.server_script = None
# Ensure logs directory exists
self.log_file.parent.mkdir(exist_ok=True)
def is_running(self) -> bool:
"""Check if MCP server is running"""
if not self.pid_file.exists():
return False
try:
with open(self.pid_file, 'r') as f:
pid = int(f.read().strip())
# Check if process exists
os.kill(pid, 0)
return True
except (OSError, ValueError, ProcessLookupError):
# Process doesn't exist, clean up pid file
if self.pid_file.exists():
self.pid_file.unlink()
return False
def get_status(self) -> Dict[str, Any]:
"""Get detailed server status"""
status = {
'running': self.is_running(),
'pid': None,
'uptime': None,
'log_file': str(self.log_file),
'pid_file': str(self.pid_file)
}
if status['running']:
try:
with open(self.pid_file, 'r') as f:
status['pid'] = int(f.read().strip())
# Get process start time for uptime calculation
import psutil
process = psutil.Process(status['pid'])
start_time = process.create_time()
status['uptime'] = time.time() - start_time
status['memory_usage'] = process.memory_info().rss / 1024 / 1024 # MB
status['cpu_percent'] = process.cpu_percent()
except Exception as e:
logger.warning(f"Could not get detailed status: {e}")
return status
def start(self, background: bool = True) -> bool:
"""Start the MCP server - now deprecated, use npm package instead"""
logger.warning("MCP server Python implementation has been removed.")
logger.info("Please use the npm package 'todo-for-ai-mcp' instead.")
logger.info("Install with: npm install -g todo-for-ai-mcp")
logger.info("Configure your IDE to use the npm package.")
return False
def stop(self, force: bool = False) -> bool:
"""Stop the MCP server"""
if not self.is_running():
logger.info("MCP server is not running")
return True
try:
with open(self.pid_file, 'r') as f:
pid = int(f.read().strip())
logger.info(f"Stopping MCP server (PID: {pid})...")
if force:
os.kill(pid, signal.SIGKILL)
else:
os.kill(pid, signal.SIGTERM)
# Wait for process to stop
for _ in range(10):
if not self.is_running():
break
time.sleep(1)
if self.is_running():
if not force:
logger.warning("Server didn't stop gracefully, forcing...")
return self.stop(force=True)
else:
logger.error("Failed to stop server even with force")
return False
# Clean up PID file
if self.pid_file.exists():
self.pid_file.unlink()
logger.info("MCP server stopped successfully")
return True
except Exception as e:
logger.error(f"Failed to stop MCP server: {e}")
return False
def restart(self) -> bool:
"""Restart the MCP server"""
logger.info("Restarting MCP server...")
if self.is_running():
if not self.stop():
return False
return self.start()
def health_check(self) -> Dict[str, Any]:
"""Perform health check on the server"""
health = {
'status': 'unknown',
'responsive': False,
'error': None
}
if not self.is_running():
health['status'] = 'stopped'
return health
try:
# Try to send a simple request to the server
# This is a basic check - in a real implementation you might
# want to send an actual MCP request
health['status'] = 'running'
health['responsive'] = True
except Exception as e:
health['status'] = 'error'
health['error'] = str(e)
return health
def get_logs(self, lines: int = 50) -> str:
"""Get recent log entries"""
if not self.log_file.exists():
return "No log file found"
try:
with open(self.log_file, 'r') as f:
log_lines = f.readlines()
# Return last N lines
return ''.join(log_lines[-lines:])
except Exception as e:
return f"Error reading logs: {e}"
def main():
"""Main CLI interface"""
import argparse
parser = argparse.ArgumentParser(description='MCP Server Manager')
parser.add_argument('command', choices=['start', 'stop', 'restart', 'status', 'health', 'logs'],
help='Command to execute')
parser.add_argument('--force', action='store_true', help='Force stop the server')
parser.add_argument('--foreground', action='store_true', help='Run in foreground (for start command)')
parser.add_argument('--lines', type=int, default=50, help='Number of log lines to show')
args = parser.parse_args()
manager = MCPServerManager()
if args.command == 'start':
success = manager.start(background=not args.foreground)
sys.exit(0 if success else 1)
elif args.command == 'stop':
success = manager.stop(force=args.force)
sys.exit(0 if success else 1)
elif args.command == 'restart':
success = manager.restart()
sys.exit(0 if success else 1)
elif args.command == 'status':
status = manager.get_status()
print(json.dumps(status, indent=2))
if status['running']:
print(f"\n✅ MCP Server is running (PID: {status['pid']})")
if 'uptime' in status:
uptime_hours = status['uptime'] / 3600
print(f" Uptime: {uptime_hours:.1f} hours")
if 'memory_usage' in status:
print(f" Memory: {status['memory_usage']:.1f} MB")
else:
print("\n❌ MCP Server is not running")
elif args.command == 'health':
health = manager.health_check()
print(json.dumps(health, indent=2))
if health['responsive']:
print("\n✅ MCP Server is healthy")
else:
print(f"\n❌ MCP Server health check failed: {health.get('error', 'Unknown error')}")
elif args.command == 'logs':
logs = manager.get_logs(args.lines)
print(logs)
if __name__ == "__main__":
main()