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from typing import TYPE_CHECKING
from fastapi import FastAPI
if TYPE_CHECKING:
from .agent import Agent
class AgentMiddleware:
"""
Middleware that injects the agent instance into the request scope.
"""
def __init__(self, app: FastAPI, agent: "Agent"):
"""
Args:
app: The FastAPI app - automatically injected by FastAPI.
agent: The agent instance to inject into the request scope.
Examples:
>>> from fastapi import FastAPI, Request
>>> from agent_protocol.agent import Agent
>>> from agent_protocol.middlewares import AgentMiddleware
>>> app = FastAPI()
>>> @app.get("/")
>>> async def root(request: Request):
>>> agent = request["agent"]
>>> task = agent.db.create_task("Do something.")
>>> return {"task_id": a.task_id}
>>> agent = Agent()
>>> app.add_middleware(AgentMiddleware, agent=agent)
"""
self.app = app
self.agent = agent
async def __call__(self, scope, receive, send):
scope["agent"] = self.agent
await self.app(scope, receive, send)
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