mirror of
https://github.com/langgenius/dify.git
synced 2025-07-25 18:39:19 +00:00
105 lines
4.5 KiB
Python
105 lines
4.5 KiB
Python
from flask_restful import Resource, reqparse
|
|
from pydantic import ValidationError
|
|
|
|
from controllers.console.app.mcp_server import AppMCPServerStatus
|
|
from controllers.mcp import api
|
|
from core.app.app_config.entities import VariableEntity
|
|
from core.mcp import types
|
|
from core.mcp.server.streamable_http import MCPServerStreamableHTTPRequestHandler
|
|
from core.mcp.types import ClientNotification, ClientRequest
|
|
from core.mcp.utils import create_mcp_error_response
|
|
from extensions.ext_database import db
|
|
from libs import helper
|
|
from models.model import App, AppMCPServer, AppMode
|
|
|
|
|
|
class MCPAppApi(Resource):
|
|
def post(self, server_code):
|
|
def int_or_str(value):
|
|
if isinstance(value, (int, str)):
|
|
return value
|
|
else:
|
|
return None
|
|
|
|
parser = reqparse.RequestParser()
|
|
parser.add_argument("jsonrpc", type=str, required=True, location="json")
|
|
parser.add_argument("method", type=str, required=True, location="json")
|
|
parser.add_argument("params", type=dict, required=False, location="json")
|
|
parser.add_argument("id", type=int_or_str, required=False, location="json")
|
|
args = parser.parse_args()
|
|
|
|
request_id = args.get("id")
|
|
|
|
server = db.session.query(AppMCPServer).filter(AppMCPServer.server_code == server_code).first()
|
|
if not server:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_REQUEST, "Server Not Found")
|
|
)
|
|
|
|
if server.status != AppMCPServerStatus.ACTIVE:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_REQUEST, "Server is not active")
|
|
)
|
|
|
|
app = db.session.query(App).filter(App.id == server.app_id).first()
|
|
if not app:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_REQUEST, "App Not Found")
|
|
)
|
|
|
|
if app.mode in {AppMode.ADVANCED_CHAT.value, AppMode.WORKFLOW.value}:
|
|
workflow = app.workflow
|
|
if workflow is None:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_REQUEST, "App is unavailable")
|
|
)
|
|
|
|
user_input_form = workflow.user_input_form(to_old_structure=True)
|
|
else:
|
|
app_model_config = app.app_model_config
|
|
if app_model_config is None:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_REQUEST, "App is unavailable")
|
|
)
|
|
|
|
features_dict = app_model_config.to_dict()
|
|
user_input_form = features_dict.get("user_input_form", [])
|
|
converted_user_input_form: list[VariableEntity] = []
|
|
try:
|
|
for item in user_input_form:
|
|
variable_type = item.get("type", "") or list(item.keys())[0]
|
|
variable = item[variable_type]
|
|
converted_user_input_form.append(
|
|
VariableEntity(
|
|
type=variable_type,
|
|
variable=variable.get("variable"),
|
|
description=variable.get("description") or "",
|
|
label=variable.get("label"),
|
|
required=variable.get("required", False),
|
|
max_length=variable.get("max_length"),
|
|
options=variable.get("options") or [],
|
|
)
|
|
)
|
|
except ValidationError as e:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_PARAMS, f"Invalid user_input_form: {str(e)}")
|
|
)
|
|
|
|
try:
|
|
request: ClientRequest | ClientNotification = ClientRequest.model_validate(args)
|
|
except ValidationError as e:
|
|
try:
|
|
notification = ClientNotification.model_validate(args)
|
|
request = notification
|
|
except ValidationError as e:
|
|
return helper.compact_generate_response(
|
|
create_mcp_error_response(request_id, types.INVALID_PARAMS, f"Invalid MCP request: {str(e)}")
|
|
)
|
|
|
|
mcp_server_handler = MCPServerStreamableHTTPRequestHandler(app, request, converted_user_input_form)
|
|
response = mcp_server_handler.handle()
|
|
return helper.compact_generate_response(response)
|
|
|
|
|
|
api.add_resource(MCPAppApi, "/server/<string:server_code>/mcp")
|