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refactor(config): eliminate global mutable state, wire DeerFlowContext into runtime

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- Freeze all config models (AppConfig + 15 sub-configs) with frozen=True
- Purify from_file() — remove 9 load_*_from_dict() side-effect calls
- Replace mtime/reload/push/pop machinery with single ContextVar + init_app_config()
- Delete 10 sub-module globals and their getters/setters/loaders
- Migrate 50+ consumers from get_*_config() to get_app_config().xxx

- Expand DeerFlowContext: app_config + thread_id + agent_name (frozen dataclass)
- Wire into Gateway runtime (worker.py) and DeerFlowClient via context= parameter
- Remove sandbox_id from runtime.context — flows through ThreadState.sandbox only
- Middleware/tools access runtime.context directly via Runtime[DeerFlowContext] generic
- resolve_context() retained at server entry points for LangGraph Server fallback
This commit is contained in:
greatmengqi
2026-04-13 23:49:31 +08:00
parent c4d273a68a
commit edf345cd72
111 changed files with 4848 additions and 4079 deletions
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backend/packages/harness/deerflow/sandbox/middleware.py
+5 -10
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@@ -6,6 +6,7 @@ from langchain.agents.middleware import AgentMiddleware
from langgraph.runtime import Runtime
from deerflow.agents.thread_state import SandboxState, ThreadDataState
from deerflow.config.deer_flow_context import DeerFlowContext
from deerflow.sandbox import get_sandbox_provider
logger = logging.getLogger(__name__)
@@ -49,15 +50,15 @@ class SandboxMiddleware(AgentMiddleware[SandboxMiddlewareState]):
return sandbox_id
@override
def before_agent(self, state: SandboxMiddlewareState, runtime: Runtime) -> dict | None:
def before_agent(self, state: SandboxMiddlewareState, runtime: Runtime[DeerFlowContext]) -> dict | None:
# Skip acquisition if lazy_init is enabled
if self._lazy_init:
return super().before_agent(state, runtime)
# Eager initialization (original behavior)
if "sandbox" not in state or state["sandbox"] is None:
thread_id = (runtime.context or {}).get("thread_id")
if thread_id is None:
thread_id = runtime.context.thread_id
if not thread_id:
return super().before_agent(state, runtime)
sandbox_id = self._acquire_sandbox(thread_id)
logger.info(f"Assigned sandbox {sandbox_id} to thread {thread_id}")
@@ -65,7 +66,7 @@ class SandboxMiddleware(AgentMiddleware[SandboxMiddlewareState]):
return super().before_agent(state, runtime)
@override
def after_agent(self, state: SandboxMiddlewareState, runtime: Runtime) -> dict | None:
def after_agent(self, state: SandboxMiddlewareState, runtime: Runtime[DeerFlowContext]) -> dict | None:
sandbox = state.get("sandbox")
if sandbox is not None:
sandbox_id = sandbox["sandbox_id"]
@@ -73,11 +74,5 @@ class SandboxMiddleware(AgentMiddleware[SandboxMiddlewareState]):
get_sandbox_provider().release(sandbox_id)
return None
if (runtime.context or {}).get("sandbox_id") is not None:
sandbox_id = runtime.context.get("sandbox_id")
logger.info(f"Releasing sandbox {sandbox_id} from context")
get_sandbox_provider().release(sandbox_id)
return None
# No sandbox to release
return super().after_agent(state, runtime)