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refactor(persistence): unify SQLite to single deerflow.db and move checkpointer to runtime

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Merge checkpoints.db and app.db into a single deerflow.db file (WAL mode
handles concurrent access safely). Move checkpointer module from
agents/checkpointer to runtime/checkpointer to better reflect its role
as a runtime infrastructure concern.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
rayhpeng
2026-04-10 10:08:23 +08:00
parent 9197000690
commit 03952eca53
17 changed files with 54 additions and 43 deletions
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backend/tests/test_checkpointer.py
+2 -2
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@@ -6,7 +6,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
import pytest
import deerflow.config.app_config as app_config_module
from deerflow.agents.checkpointer import get_checkpointer, reset_checkpointer
from deerflow.runtime.checkpointer import get_checkpointer, reset_checkpointer
from deerflow.config.checkpointer_config import (
CheckpointerConfig,
get_checkpointer_config,
@@ -78,7 +78,7 @@ class TestGetCheckpointer:
"""get_checkpointer should return InMemorySaver when not configured."""
from langgraph.checkpoint.memory import InMemorySaver
with patch("deerflow.agents.checkpointer.provider.get_app_config", side_effect=FileNotFoundError):
with patch("deerflow.runtime.checkpointer.provider.get_app_config", side_effect=FileNotFoundError):
cp = get_checkpointer()
assert cp is not None
assert isinstance(cp, InMemorySaver)