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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_none_fix.py
+4 -4
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@@ -12,14 +12,14 @@ class TestCheckpointerNoneFix:
@pytest.mark.anyio
async def test_async_make_checkpointer_returns_in_memory_saver_when_not_configured(self):
"""make_checkpointer should return InMemorySaver when config.checkpointer is None."""
from deerflow.agents.checkpointer.async_provider import make_checkpointer
from deerflow.runtime.checkpointer.async_provider import make_checkpointer
# Mock get_app_config to return a config with checkpointer=None and database=None
mock_config = MagicMock()
mock_config.checkpointer = None
mock_config.database = None
with patch("deerflow.agents.checkpointer.async_provider.get_app_config", return_value=mock_config):
with patch("deerflow.runtime.checkpointer.async_provider.get_app_config", return_value=mock_config):
async with make_checkpointer() as checkpointer:
# Should return InMemorySaver, not None
assert checkpointer is not None
@@ -36,13 +36,13 @@ class TestCheckpointerNoneFix:
def test_sync_checkpointer_context_returns_in_memory_saver_when_not_configured(self):
"""checkpointer_context should return InMemorySaver when config.checkpointer is None."""
from deerflow.agents.checkpointer.provider import checkpointer_context
from deerflow.runtime.checkpointer.provider import checkpointer_context
# Mock get_app_config to return a config with checkpointer=None
mock_config = MagicMock()
mock_config.checkpointer = None
with patch("deerflow.agents.checkpointer.provider.get_app_config", return_value=mock_config):
with patch("deerflow.runtime.checkpointer.provider.get_app_config", return_value=mock_config):
with checkpointer_context() as checkpointer:
# Should return InMemorySaver, not None
assert checkpointer is not None