fix(serialization): fix asset unique and asset alias unique serializa…

…tion

airflow/serialization/enums.py

@@ -60,6 +60,8 @@ class DagAttributeTypes(str, Enum):
     ASSET_ANY = "asset_any"
     ASSET_ALL = "asset_all"
     ASSET_REF = "asset_ref"
+    ASSET_UNIQUE_KEY = "asset_unique_key"
+    ASSET_ALIAS_UNIQUE_KEY = "asset_alias_unique_key"
     SIMPLE_TASK_INSTANCE = "simple_task_instance"
     BASE_JOB = "Job"
     TASK_INSTANCE = "task_instance"

airflow/serialization/serialized_objects.py

@@ -59,9 +59,11 @@
 from airflow.sdk.definitions.asset import (
     Asset,
     AssetAlias,
+    AssetAliasUniqueKey,
     AssetAll,
     AssetAny,
     AssetRef,
+    AssetUniqueKey,
     BaseAsset,
 )
 from airflow.sdk.definitions.baseoperator import BaseOperator as TaskSDKBaseOperator
@@ -316,19 +318,35 @@ def decode_outlet_event_accessor(var: dict[str, Any]) -> OutletEventAccessor:
     outlet_event_accessor = OutletEventAccessor(
         key=BaseSerialization.deserialize(var["key"]),
         extra=var["extra"],
-        asset_alias_events=[AssetAliasEvent(**e) for e in asset_alias_events],
+        asset_alias_events=[
+            AssetAliasEvent(
+                source_alias_name=e["source_alias_name"],
+                dest_asset_key=AssetUniqueKey(
+                    name=e["dest_asset_key"]["name"], uri=e["dest_asset_key"]["uri"]
+                ),
+                extra=e["extra"],
+            )
+            for e in asset_alias_events
+        ],
     )
     return outlet_event_accessor
 
 
 def encode_outlet_event_accessors(var: OutletEventAccessors) -> dict[str, Any]:
-    return {k: encode_outlet_event_accessor(v) for k, v in var._dict.items()}  # type: ignore[attr-defined]
+    return {
+        "__type": DAT.ASSET_EVENT_ACCESSORS,
+        "_dict": [
+            {"key": BaseSerialization.serialize(k), "value": encode_outlet_event_accessor(v)}
+            for k, v in var._dict.items()
+        ],
+    }
 
 
 def decode_outlet_event_accessors(var: dict[str, Any]) -> OutletEventAccessors:
     d = OutletEventAccessors()  # type: ignore[assignment]
     d._dict = {  # type: ignore[attr-defined]
-        k: decode_outlet_event_accessor(v) for k, v in var.items()
+        BaseSerialization.deserialize(row["key"]): decode_outlet_event_accessor(row["value"])
+        for row in var["_dict"]
     }
     return d
 
@@ -694,6 +712,16 @@ def serialize(
                 encode_outlet_event_accessors(var),
                 type_=DAT.ASSET_EVENT_ACCESSORS,
             )
+        elif isinstance(var, AssetUniqueKey):
+            return cls._encode(
+                attrs.asdict(var),
+                type_=DAT.ASSET_UNIQUE_KEY,
+            )
+        elif isinstance(var, AssetAliasUniqueKey):
+            return cls._encode(
+                attrs.asdict(var),
+                type_=DAT.ASSET_ALIAS_UNIQUE_KEY,
+            )
         elif isinstance(var, DAG):
             return cls._encode(SerializedDAG.serialize_dag(var), type_=DAT.DAG)
         elif isinstance(var, Resources):
@@ -858,6 +886,10 @@ def deserialize(cls, encoded_var: Any, use_pydantic_models=False) -> Any:
             return {k: cls.deserialize(v, use_pydantic_models) for k, v in var.items()}
         elif type_ == DAT.ASSET_EVENT_ACCESSORS:
             return decode_outlet_event_accessors(var)
+        elif type_ == DAT.ASSET_UNIQUE_KEY:
+            return AssetUniqueKey(name=var["name"], uri=var["uri"])
+        elif type_ == DAT.ASSET_ALIAS_UNIQUE_KEY:
+            return AssetAliasUniqueKey(name=var["name"])
         elif type_ == DAT.DAG:
             return SerializedDAG.deserialize_dag(var)
         elif type_ == DAT.OP:

tests/serialization/test_serialized_objects.py

@@ -49,7 +49,7 @@
 from airflow.models.xcom_arg import XComArg
 from airflow.operators.empty import EmptyOperator
 from airflow.providers.standard.operators.python import PythonOperator
-from airflow.sdk.definitions.asset import Asset, AssetAlias, AssetAliasUniqueKey, AssetUniqueKey
+from airflow.sdk.definitions.asset import Asset, AssetAlias, AssetUniqueKey
 from airflow.serialization.enums import DagAttributeTypes as DAT, Encoding
 from airflow.serialization.pydantic.asset import AssetEventPydantic, AssetPydantic
 from airflow.serialization.pydantic.dag import DagModelPydantic, DagTagPydantic
@@ -150,6 +150,16 @@ class Test:
 DAG_RUN.id = 1
 
 
+def create_outlet_event_accessors(
+    key: Asset | AssetAlias, extra: dict, asset_alias_events: list[AssetAliasEvent]
+) -> OutletEventAccessors:
+    o = OutletEventAccessors()
+    o[key].extra = extra
+    o[key].asset_alias_events = asset_alias_events
+
+    return o
+
+
 def equals(a, b) -> bool:
     return a == b
 
@@ -162,6 +172,12 @@ def equal_exception(a: AirflowException, b: AirflowException) -> bool:
     return a.__class__ == b.__class__ and str(a) == str(b)
 
 
+def equal_outlet_event_accessors(a: OutletEventAccessors, b: OutletEventAccessors) -> bool:
+    return a._dict.keys() == b._dict.keys() and all(
+        equal_outlet_event_accessor(a._dict[key], b._dict[key]) for key in a._dict
+    )
+
+
 def equal_outlet_event_accessor(a: OutletEventAccessor, b: OutletEventAccessor) -> bool:
     return a.key == b.key and a.extra == b.extra and a.asset_alias_events == b.asset_alias_events
 
@@ -257,30 +273,26 @@ def __len__(self) -> int:
             lambda a, b: a.get_uri() == b.get_uri(),
         ),
         (
-            OutletEventAccessor(
-                key=AssetUniqueKey.from_asset(Asset(uri="test", name="test", group="test-group")),
-                extra={"key": "value"},
-                asset_alias_events=[],
+            create_outlet_event_accessors(
+                Asset(uri="test", name="test", group="test-group"), {"key": "value"}, []
             ),
-            DAT.ASSET_EVENT_ACCESSOR,
-            equal_outlet_event_accessor,
+            DAT.ASSET_EVENT_ACCESSORS,
+            equal_outlet_event_accessors,
         ),
         (
-            OutletEventAccessor(
-                key=AssetAliasUniqueKey.from_asset_alias(
-                    AssetAlias(name="test_alias", group="test-alias-group")
-                ),
-                extra={"key": "value"},
-                asset_alias_events=[
+            create_outlet_event_accessors(
+                AssetAlias(name="test_alias", group="test-alias-group"),
+                {"key": "value"},
+                [
                     AssetAliasEvent(
                         source_alias_name="test_alias",
                         dest_asset_key=AssetUniqueKey(name="test_name", uri="test://asset-uri"),
                         extra={},
                     )
                 ],
             ),
-            DAT.ASSET_EVENT_ACCESSOR,
-            equal_outlet_event_accessor,
+            DAT.ASSET_EVENT_ACCESSORS,
+            equal_outlet_event_accessors,
         ),
         (
             AirflowException("test123 wohoo!"),