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feat: flush memory before summarization (#2176)

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* feat: flush memory before summarization

* fix: keep agent-scoped memory on summarization flush

* fix: harden summarization hook plumbing

* fix: address summarization review feedback

* style: format memory middleware
This commit is contained in:
DanielWalnut
2026-04-14 15:01:06 +08:00
committed by GitHub
parent e4f896e90d
commit 4ba3167f48
10 changed files with 667 additions and 189 deletions
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backend/packages/harness/deerflow/agents/lead_agent/agent.py
+10 -3
View File
@@ -1,14 +1,16 @@
import logging
from langchain.agents import create_agent
from langchain.agents.middleware import AgentMiddleware, SummarizationMiddleware
from langchain.agents.middleware import AgentMiddleware
from langchain_core.runnables import RunnableConfig
from deerflow.agents.lead_agent.prompt import apply_prompt_template
from deerflow.agents.memory.summarization_hook import memory_flush_hook
from deerflow.agents.middlewares.clarification_middleware import ClarificationMiddleware
from deerflow.agents.middlewares.loop_detection_middleware import LoopDetectionMiddleware
from deerflow.agents.middlewares.memory_middleware import MemoryMiddleware
from deerflow.agents.middlewares.subagent_limit_middleware import SubagentLimitMiddleware
from deerflow.agents.middlewares.summarization_middleware import BeforeSummarizationHook, DeerFlowSummarizationMiddleware
from deerflow.agents.middlewares.title_middleware import TitleMiddleware
from deerflow.agents.middlewares.todo_middleware import TodoMiddleware
from deerflow.agents.middlewares.token_usage_middleware import TokenUsageMiddleware
@@ -17,6 +19,7 @@ from deerflow.agents.middlewares.view_image_middleware import ViewImageMiddlewar
from deerflow.agents.thread_state import ThreadState
from deerflow.config.agents_config import load_agent_config
from deerflow.config.app_config import get_app_config
from deerflow.config.memory_config import get_memory_config
from deerflow.config.summarization_config import get_summarization_config
from deerflow.models import create_chat_model
@@ -38,7 +41,7 @@ def _resolve_model_name(requested_model_name: str | None = None) -> str:
return default_model_name
def _create_summarization_middleware() -> SummarizationMiddleware | None:
def _create_summarization_middleware() -> DeerFlowSummarizationMiddleware | None:
"""Create and configure the summarization middleware from config."""
config = get_summarization_config()
@@ -77,7 +80,11 @@ def _create_summarization_middleware() -> SummarizationMiddleware | None:
if config.summary_prompt is not None:
kwargs["summary_prompt"] = config.summary_prompt
return SummarizationMiddleware(**kwargs)
hooks: list[BeforeSummarizationHook] = []
if get_memory_config().enabled:
hooks.append(memory_flush_hook)
return DeerFlowSummarizationMiddleware(**kwargs, before_summarization=hooks)
def _create_todo_list_middleware(is_plan_mode: bool) -> TodoMiddleware | None: