src/workflows/graph_workflow.py

from src.utils.settings import settings
from llama_index.core.settings import Settings
from src.models.workflow_graph import GetResponseEvent, ConstructGraphEvent
from llama_index.core.workflow import (
    Event,
    StartEvent,
    StopEvent,
    Workflow,
    Context,
    step
)
import asyncio
from src.utils.helper import helper

class DesignGraphWorkflow(Workflow):

    @step
    async def GetRawWorkflow(self, ctx: Context, ev: StartEvent) -> GetResponseEvent:
        _project_description = ev._project_description
        llm = ev.llm

        modules = settings.moduleList
        prompt = helper._build_prompt(
            project_desc=_project_description,
            modules=modules
        )

        try:
            response = await llm.acomplete(prompt)
        except Exception as e:
            raise (f"Error: {e}")

        return GetResponseEvent(project_details=_project_description, rawResponse=response.text)

    @step
    def ExtractGraph(self, ctx: Context, ev: GetResponseEvent) -> ConstructGraphEvent:
        raw_llm_response = ev.rawResponse
        graph = helper._parse_llm_response(raw_response=raw_llm_response)

        return ConstructGraphEvent(workflowGraph=graph)

    @step
    def exportGraph(self, ctx: Context, ev: ConstructGraphEvent) -> StopEvent:
        graph = ev.workflowGraph
        helper._store_graph(graph_data=graph)

        return StopEvent(result=graph)