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fix: substreampartitionrouter state migration from child when it is empty #444

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merged 2 commits into from
Mar 25, 2025
Merged

fix: substreampartitionrouter state migration from child when it is empty #444

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af400e5
fix substreampartitionrouter state migration from child when it is empty
maxi297 Mar 25, 2025
26095cb
Auto-fix lint and format issues
Mar 25, 2025
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2 changes: 1 addition & 1 deletion airbyte_cdk/sources/declarative/partition_routers/substream_partition_router.py
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Original file line number Diff line number Diff line change
Expand Up @@ -374,7 +374,7 @@ def _migrate_child_state_to_parent_state(self, stream_state: StreamState) -> Str
# Ignore per-partition states or invalid formats.
if isinstance(substream_state, (list, dict)) or len(substream_state_values) != 1:
# If a global state is present under the key "state", use its first value.
if "state" in stream_state and isinstance(stream_state["state"], dict):
if "state" in stream_state and isinstance(stream_state["state"], dict) and stream_state["state"] != {}:
substream_state = list(stream_state["state"].values())[0]
else:
return {}
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14 changes: 14 additions & 0 deletions unit_tests/sources/declarative/partition_routers/test_substream_partition_router.py
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Expand Up @@ -473,6 +473,19 @@ def test_substream_partition_router_invalid_parent_record_type():
},
{"parent_stream_cursor": "2023-05-27T00:00:00Z"},
),
# Case 7: Migrate child state to parent state but child state is empty
(
{
"state": {},
"states": [],
"parent_state": {
"posts": {}
},
"lookback_window": 1,
"use_global_cursor": False
},
{},
),
],
ids=[
"empty_initial_state",
Expand All @@ -481,6 +494,7 @@ def test_substream_partition_router_invalid_parent_record_type():
"initial_state_no_parent_per_partition_state",
"initial_state_with_parent_state",
"initial_state_no_parent_global_state_declarative",
"initial_state_no_parent_and_no_child",
],
)
def test_set_initial_state(initial_state, expected_parent_state):
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