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import json
import asyncio
from typing import Dict, Any
from agentpress.tool import ToolResult
from mcp import ClientSession, StdioServerParameters
from mcp.client.sse import sse_client
from mcp.client.stdio import stdio_client
from mcp.client.streamable_http import streamablehttp_client
from mcp_module import mcp_manager
from utils.logger import logger
class MCPToolExecutor:
def __init__(self, custom_tools: Dict[str, Dict[str, Any]], tool_wrapper=None):
self.mcp_manager = mcp_manager
self.custom_tools = custom_tools
self.tool_wrapper = tool_wrapper
async def execute_tool(self, tool_name: str, arguments: Dict[str, Any]) -> ToolResult:
logger.info(f"Executing MCP tool {tool_name} with arguments {arguments}")
try:
if tool_name in self.custom_tools:
return await self._execute_custom_tool(tool_name, arguments)
else:
return await self._execute_standard_tool(tool_name, arguments)
except Exception as e:
logger.error(f"Error executing MCP tool {tool_name}: {str(e)}")
return self._create_error_result(f"Error executing tool: {str(e)}")
async def _execute_standard_tool(self, tool_name: str, arguments: Dict[str, Any]) -> ToolResult:
result = await self.mcp_manager.execute_tool(tool_name, arguments)
if isinstance(result, dict):
if result.get('isError', False):
return self._create_error_result(result.get('content', 'Tool execution failed'))
else:
return self._create_success_result(result.get('content', result))
else:
return self._create_success_result(result)
async def _execute_custom_tool(self, tool_name: str, arguments: Dict[str, Any]) -> ToolResult:
tool_info = self.custom_tools[tool_name]
custom_type = tool_info['custom_type']
if custom_type == 'pipedream':
return await self._execute_pipedream_tool(tool_name, arguments, tool_info)
elif custom_type == 'sse':
return await self._execute_sse_tool(tool_name, arguments, tool_info)
elif custom_type == 'http':
return await self._execute_http_tool(tool_name, arguments, tool_info)
elif custom_type == 'json':
return await self._execute_json_tool(tool_name, arguments, tool_info)
else:
return self._create_error_result(f"Unsupported custom MCP type: {custom_type}")
async def _execute_pipedream_tool(self, tool_name: str, arguments: Dict[str, Any], tool_info: Dict[str, Any]) -> ToolResult:
custom_config = tool_info['custom_config']
original_tool_name = tool_info['original_name']
external_user_id = await self._resolve_external_user_id(custom_config)
if not external_user_id:
return self._create_error_result("No external_user_id available")
app_slug = custom_config.get('app_slug')
oauth_app_id = custom_config.get('oauth_app_id')
try:
import os
from pipedream.facade import PipedreamManager
pipedream_manager = PipedreamManager()
http_client = pipedream_manager._http_client
access_token = await http_client._ensure_access_token()
project_id = os.getenv("PIPEDREAM_PROJECT_ID")
environment = os.getenv("PIPEDREAM_X_PD_ENVIRONMENT", "development")
headers = {
"Authorization": f"Bearer {access_token}",
"x-pd-project-id": project_id,
"x-pd-environment": environment,
"x-pd-external-user-id": external_user_id,
"x-pd-app-slug": app_slug,
}
if http_client.rate_limit_token:
headers["x-pd-rate-limit"] = http_client.rate_limit_token
if oauth_app_id:
headers["x-pd-oauth-app-id"] = oauth_app_id
url = "https://remote.mcp.pipedream.net"
async with asyncio.timeout(30):
async with streamablehttp_client(url, headers=headers) as (read_stream, write_stream, _):
async with ClientSession(read_stream, write_stream) as session:
await session.initialize()
result = await session.call_tool(original_tool_name, arguments)
return self._create_success_result(self._extract_content(result))
except Exception as e:
logger.error(f"Error executing Pipedream MCP tool: {str(e)}")
return self._create_error_result(f"Error executing Pipedream tool: {str(e)}")
async def _execute_sse_tool(self, tool_name: str, arguments: Dict[str, Any], tool_info: Dict[str, Any]) -> ToolResult:
custom_config = tool_info['custom_config']
original_tool_name = tool_info['original_name']
url = custom_config['url']
headers = custom_config.get('headers', {})
async with asyncio.timeout(30):
try:
async with sse_client(url, headers=headers) as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
result = await session.call_tool(original_tool_name, arguments)
return self._create_success_result(self._extract_content(result))
except TypeError as e:
if "unexpected keyword argument" in str(e):
async with sse_client(url) as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
result = await session.call_tool(original_tool_name, arguments)
return self._create_success_result(self._extract_content(result))
else:
raise
async def _execute_http_tool(self, tool_name: str, arguments: Dict[str, Any], tool_info: Dict[str, Any]) -> ToolResult:
custom_config = tool_info['custom_config']
original_tool_name = tool_info['original_name']
url = custom_config['url']
try:
async with asyncio.timeout(30):
async with streamablehttp_client(url) as (read, write, _):
async with ClientSession(read, write) as session:
await session.initialize()
result = await session.call_tool(original_tool_name, arguments)
return self._create_success_result(self._extract_content(result))
except Exception as e:
logger.error(f"Error executing HTTP MCP tool: {str(e)}")
return self._create_error_result(f"Error executing HTTP tool: {str(e)}")
async def _execute_json_tool(self, tool_name: str, arguments: Dict[str, Any], tool_info: Dict[str, Any]) -> ToolResult:
custom_config = tool_info['custom_config']
original_tool_name = tool_info['original_name']
server_params = StdioServerParameters(
command=custom_config["command"],
args=custom_config.get("args", []),
env=custom_config.get("env", {})
)
async with asyncio.timeout(30):
async with stdio_client(server_params) as (read, write):
async with ClientSession(read, write) as session:
await session.initialize()
result = await session.call_tool(original_tool_name, arguments)
return self._create_success_result(self._extract_content(result))
async def _resolve_external_user_id(self, custom_config: Dict[str, Any]) -> str:
profile_id = custom_config.get('profile_id')
external_user_id = custom_config.get('external_user_id')
if not profile_id:
return external_user_id
try:
from services.supabase import DBConnection
from utils.encryption import decrypt_data
db = DBConnection()
supabase = await db.client
result = await supabase.table('user_mcp_credential_profiles').select(
'encrypted_config'
).eq('profile_id', profile_id).single().execute()
if result.data:
decrypted_config = decrypt_data(result.data['encrypted_config'])
config_data = json.loads(decrypted_config)
return config_data.get('external_user_id', external_user_id)
except Exception as e:
logger.error(f"Failed to resolve profile {profile_id}: {str(e)}")
return external_user_id
def _extract_content(self, result) -> str:
if hasattr(result, 'content'):
content = result.content
if isinstance(content, list):
text_parts = []
for item in content:
if hasattr(item, 'text'):
text_parts.append(item.text)
else:
text_parts.append(str(item))
return "\n".join(text_parts)
elif hasattr(content, 'text'):
return content.text
else:
return str(content)
else:
return str(result)
def _create_success_result(self, content: Any) -> ToolResult:
if self.tool_wrapper and hasattr(self.tool_wrapper, 'success_response'):
return self.tool_wrapper.success_response(content)
return ToolResult(
success=True,
content=str(content),
metadata={}
)
def _create_error_result(self, error_message: str) -> ToolResult:
if self.tool_wrapper and hasattr(self.tool_wrapper, 'fail_response'):
return self.tool_wrapper.fail_response(error_message)
return ToolResult(
success=False,
content=error_message,
metadata={}
) |