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fix(DatabaseSessionService): Align event filtering and ordering logic #915

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fix(DatabaseSessionService): Align event filtering and ordering logic #915

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d01a8fd
fix(DatabaseSessionService): Align event filtering and ordering logic
ystory May 24, 2025
5cc8cf5
Merge branch 'main' into fix/database-session-timestamp-recency
DeanChensj May 27, 2025
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11 changes: 4 additions & 7 deletions src/google/adk/sessions/database_session_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,6 @@
# limitations under the License.
import copy
from datetime import datetime
from datetime import timezone
import json
import logging
from typing import Any
Expand Down Expand Up @@ -371,18 +370,16 @@ async def get_session(
return None

if config and config.after_timestamp:
after_dt = datetime.fromtimestamp(
config.after_timestamp, tz=timezone.utc
)
timestamp_filter = StorageEvent.timestamp > after_dt
after_dt = datetime.fromtimestamp(config.after_timestamp)
timestamp_filter = StorageEvent.timestamp >= after_dt
else:
timestamp_filter = True

storage_events = (
session_factory.query(StorageEvent)
.filter(StorageEvent.session_id == storage_session.id)
.filter(timestamp_filter)
.order_by(StorageEvent.timestamp.asc())
.order_by(StorageEvent.timestamp.desc())
.limit(
config.num_recent_events
if config and config.num_recent_events
Expand Down Expand Up @@ -429,7 +426,7 @@ async def get_session(
error_message=e.error_message,
interrupted=e.interrupted,
)
for e in storage_events
for e in reversed(storage_events)
]
return session

Expand Down
2 changes: 1 addition & 1 deletion tests/unittests/sessions/test_session_service.py
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Expand Up @@ -315,7 +315,7 @@ async def test_append_event_complete(service_type):


@pytest.mark.asyncio
@pytest.mark.parametrize('service_type', [SessionServiceType.IN_MEMORY])
@pytest.mark.parametrize('service_type', [SessionServiceType.IN_MEMORY, SessionServiceType.DATABASE])
async def test_get_session_with_config(service_type):
session_service = get_session_service(service_type)
app_name = 'my_app'
Expand Down