Maas-Agent/apps/application/flow/step_node/mcp_node/i_mcp_node.py

# coding=utf-8

from typing import Type

from django.utils.translation import gettext_lazy as _
from rest_framework import serializers

from application.flow.common import WorkflowMode
from application.flow.i_step_node import INode, NodeResult


class McpNodeSerializer(serializers.Serializer):
    mcp_servers = serializers.JSONField(required=True, label=_("Mcp servers"))
    mcp_server = serializers.CharField(required=True, label=_("Mcp server"))
    mcp_tool = serializers.CharField(required=True, label=_("Mcp tool"))
    mcp_tool_id = serializers.CharField(required=False, label=_("Mcp tool"), allow_null=True, allow_blank=True)
    mcp_source = serializers.CharField(required=False, label=_("Mcp source"), allow_blank=True, allow_null=True)
    tool_params = serializers.DictField(required=True, label=_("Tool parameters"))


class IMcpNode(INode):
    type = 'mcp-node'
    support = [WorkflowMode.APPLICATION, WorkflowMode.APPLICATION_LOOP, WorkflowMode.KNOWLEDGE,
               WorkflowMode.KNOWLEDGE_LOOP, WorkflowMode.TOOL, WorkflowMode.TOOL_LOOP]

    def get_node_params_serializer_class(self) -> Type[serializers.Serializer]:
        return McpNodeSerializer

    def _run(self):
        return self.execute(**self.node_params_serializer.data, **self.flow_params_serializer.data)

    def execute(self, mcp_servers, mcp_server, mcp_tool, mcp_tool_id, mcp_source, tool_params, **kwargs) -> NodeResult:
        pass