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feat: add thread data middleware (#2)

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DanielWalnut
2026-01-15 13:22:30 +08:00
committed by GitHub
parent ab427731dc
commit c92eedc572
8 changed files with 181 additions and 14 deletions
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11
backend/src/sandbox/middleware.py
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@@ -4,7 +4,7 @@ from langchain.agents import AgentState
from langchain.agents.middleware import AgentMiddleware
from langgraph.runtime import Runtime
from src.agents.thread_state import SandboxState
from src.agents.thread_state import SandboxState, ThreadDataState
from src.sandbox import get_sandbox_provider
@@ -12,6 +12,7 @@ class SandboxMiddlewareState(AgentState):
"""Compatible with the `ThreadState` schema."""
sandbox: NotRequired[SandboxState | None]
thread_data: NotRequired[ThreadDataState | None]
class SandboxMiddleware(AgentMiddleware[SandboxMiddlewareState]):
@@ -19,15 +20,17 @@ class SandboxMiddleware(AgentMiddleware[SandboxMiddlewareState]):
state_schema = SandboxMiddlewareState
def _acquire_sandbox(self) -> str:
def _acquire_sandbox(self, thread_id: str) -> str:
provider = get_sandbox_provider()
sandbox_id = provider.acquire()
sandbox_id = provider.acquire(thread_id)
print(f"Acquiring sandbox {sandbox_id}")
return sandbox_id
@override
def before_agent(self, state: SandboxMiddlewareState, runtime: Runtime) -> dict | None:
if "sandbox" not in state or state["sandbox"] is None:
sandbox_id = self._acquire_sandbox()
thread_id = runtime.context["thread_id"]
print(f"Thread ID: {thread_id}")
sandbox_id = self._acquire_sandbox(thread_id)
return {"sandbox": {"sandbox_id": sandbox_id}}
return super().before_agent(state, runtime)