mirror of https://github.com/kortix-ai/suna.git
291 lines
11 KiB
Python
291 lines
11 KiB
Python
import os
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import sys
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import json
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import asyncio
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import subprocess
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from typing import Dict, Any
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from concurrent.futures import ThreadPoolExecutor
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from fastapi import HTTPException # type: ignore
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from utils.logger import logger
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from mcp import ClientSession
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from mcp.client.sse import sse_client # type: ignore
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windows_executor = ThreadPoolExecutor(max_workers=4)
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def run_mcp_stdio_sync(command, args, env_vars, timeout=30):
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try:
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env = os.environ.copy()
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env.update(env_vars)
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full_command = [command] + args
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process = subprocess.Popen(
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full_command,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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env=env,
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text=True,
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bufsize=0,
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creationflags=subprocess.CREATE_NEW_PROCESS_GROUP if sys.platform == "win32" else 0
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)
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init_request = {
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"jsonrpc": "2.0",
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"id": 1,
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"method": "initialize",
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"params": {
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"protocolVersion": "2024-11-05",
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"capabilities": {},
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"clientInfo": {"name": "mcp-client", "version": "1.0.0"}
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}
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}
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process.stdin.write(json.dumps(init_request) + "\n")
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process.stdin.flush()
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init_response_line = process.stdout.readline().strip()
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if not init_response_line:
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raise Exception("No response from MCP server during initialization")
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init_response = json.loads(init_response_line)
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init_notification = {
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"jsonrpc": "2.0",
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"method": "notifications/initialized"
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}
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process.stdin.write(json.dumps(init_notification) + "\n")
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process.stdin.flush()
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tools_request = {
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"jsonrpc": "2.0",
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"id": 2,
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"method": "tools/list",
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"params": {}
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}
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process.stdin.write(json.dumps(tools_request) + "\n")
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process.stdin.flush()
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tools_response_line = process.stdout.readline().strip()
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if not tools_response_line:
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raise Exception("No response from MCP server for tools list")
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tools_response = json.loads(tools_response_line)
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tools_info = []
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if "result" in tools_response and "tools" in tools_response["result"]:
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for tool in tools_response["result"]["tools"]:
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tool_info = {
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"name": tool["name"],
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"description": tool.get("description", ""),
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"input_schema": tool.get("inputSchema", {})
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}
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tools_info.append(tool_info)
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return {
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"status": "connected",
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"transport": "stdio",
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"tools": tools_info
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}
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except subprocess.TimeoutExpired:
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return {
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"status": "error",
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"error": f"Process timeout after {timeout} seconds",
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"tools": []
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}
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except json.JSONDecodeError as e:
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return {
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"status": "error",
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"error": f"Invalid JSON response: {str(e)}",
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"tools": []
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}
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except Exception as e:
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return {
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"status": "error",
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"error": str(e),
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"tools": []
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}
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finally:
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try:
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if 'process' in locals():
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process.terminate()
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process.wait(timeout=5)
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except:
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pass
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async def connect_stdio_server_windows(server_name, server_config, all_tools, timeout):
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"""Windows-compatible stdio connection using subprocess"""
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logger.info(f"Connecting to {server_name} using Windows subprocess method")
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command = server_config["command"]
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args = server_config.get("args", [])
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env_vars = server_config.get("env", {})
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loop = asyncio.get_event_loop()
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result = await loop.run_in_executor(
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windows_executor,
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run_mcp_stdio_sync,
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command,
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args,
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env_vars,
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timeout
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)
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all_tools[server_name] = result
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if result["status"] == "connected":
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logger.info(f" {server_name}: Connected via Windows subprocess ({len(result['tools'])} tools)")
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else:
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logger.error(f" {server_name}: Error - {result['error']}")
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async def list_mcp_tools_mixed_windows(config, timeout=15):
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all_tools = {}
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if "mcpServers" not in config:
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return all_tools
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mcp_servers = config["mcpServers"]
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for server_name, server_config in mcp_servers.items():
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logger.info(f"Connecting to MCP server: {server_name}")
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if server_config.get("disabled", False):
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all_tools[server_name] = {"status": "disabled", "tools": []}
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logger.info(f" {server_name}: Disabled")
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continue
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try:
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await connect_stdio_server_windows(server_name, server_config, all_tools, timeout)
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except asyncio.TimeoutError:
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all_tools[server_name] = {
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"status": "error",
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"error": f"Connection timeout after {timeout} seconds",
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"tools": []
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}
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logger.error(f" {server_name}: Timeout after {timeout} seconds")
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except Exception as e:
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error_msg = str(e)
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all_tools[server_name] = {
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"status": "error",
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"error": error_msg,
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"tools": []
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}
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logger.error(f" {server_name}: Error - {error_msg}")
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import traceback
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logger.debug(f"Full traceback for {server_name}: {traceback.format_exc()}")
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return all_tools
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async def discover_custom_tools(request_type: str, config: Dict[str, Any]):
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logger.info(f"Received custom MCP discovery request: type={request_type}")
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logger.debug(f"Request config: {config}")
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tools = []
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server_name = None
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if request_type == 'json':
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try:
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all_tools = await list_mcp_tools_mixed_windows(config, timeout=30)
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if "mcpServers" in config and config["mcpServers"]:
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server_name = list(config["mcpServers"].keys())[0]
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if server_name in all_tools:
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server_info = all_tools[server_name]
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if server_info["status"] == "connected":
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tools = server_info["tools"]
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logger.info(f"Found {len(tools)} tools for server {server_name}")
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else:
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error_msg = server_info.get("error", "Unknown error")
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logger.error(f"Server {server_name} failed: {error_msg}")
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raise HTTPException(
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status_code=400,
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detail=f"Failed to connect to MCP server '{server_name}': {error_msg}"
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)
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else:
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logger.error(f"Server {server_name} not found in results")
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raise HTTPException(status_code=400, detail=f"Server '{server_name}' not found in results")
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else:
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logger.error("No MCP servers configured")
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raise HTTPException(status_code=400, detail="No MCP servers configured")
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except HTTPException:
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raise
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except Exception as e:
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logger.error(f"Error connecting to stdio MCP server: {e}")
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import traceback
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logger.error(f"Full traceback: {traceback.format_exc()}")
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raise HTTPException(status_code=400, detail=f"Failed to connect to MCP server: {str(e)}")
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elif request_type == 'sse':
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if 'url' not in config:
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raise HTTPException(status_code=400, detail="SSE configuration must include 'url' field")
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url = config['url']
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headers = config.get('headers', {})
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try:
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async with asyncio.timeout(15):
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try:
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async with sse_client(url, headers=headers) as (read, write):
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async with ClientSession(read, write) as session:
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await session.initialize()
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tools_result = await session.list_tools()
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tools_info = []
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for tool in tools_result.tools:
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tool_info = {
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"name": tool.name,
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"description": tool.description,
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"input_schema": tool.inputSchema
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}
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tools_info.append(tool_info)
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for tool_info in tools_info:
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tools.append({
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"name": tool_info["name"],
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"description": tool_info["description"],
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"inputSchema": tool_info["input_schema"]
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})
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except TypeError as e:
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if "unexpected keyword argument" in str(e):
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async with sse_client(url) as (read, write):
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async with ClientSession(read, write) as session:
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await session.initialize()
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tools_result = await session.list_tools()
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tools_info = []
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for tool in tools_result.tools:
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tool_info = {
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"name": tool.name,
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"description": tool.description,
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"input_schema": tool.inputSchema
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}
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tools_info.append(tool_info)
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for tool_info in tools_info:
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tools.append({
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"name": tool_info["name"],
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"description": tool_info["description"],
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"inputSchema": tool_info["input_schema"]
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})
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else:
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raise
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except asyncio.TimeoutError:
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raise HTTPException(status_code=408, detail="Connection timeout - server took too long to respond")
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except Exception as e:
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logger.error(f"Error connecting to SSE MCP server: {e}")
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raise HTTPException(status_code=400, detail=f"Failed to connect to MCP server: {str(e)}")
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else:
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raise HTTPException(status_code=400, detail="Invalid server type. Must be 'json' or 'sse'")
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response_data = {"tools": tools, "count": len(tools)}
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if server_name:
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response_data["serverName"] = server_name
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logger.info(f"Returning {len(tools)} tools for server {server_name}")
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return response_data |