Fix: Returning ModelPackage object on register of PipelineModel

src/sagemaker/pipeline.py

@@ -26,6 +26,7 @@
 )
 from sagemaker.drift_check_baselines import DriftCheckBaselines
 from sagemaker.metadata_properties import MetadataProperties
+from sagemaker.model import ModelPackage
 from sagemaker.model_card import (
     ModelCard,
     ModelPackageModelCard,
@@ -470,7 +471,18 @@ def register(
             model_card=model_card,
         )
 
-        self.sagemaker_session.create_model_package_from_containers(**model_pkg_args)
+        model_package = self.sagemaker_session.create_model_package_from_containers(
+            **model_pkg_args
+        )
+
+        if model_package is not None and "ModelPackageArn" in model_package:
+            return ModelPackage(
+                role=self.role,
+                model_package_arn=model_package.get("ModelPackageArn"),
+                sagemaker_session=self.sagemaker_session,
+                predictor_cls=self.predictor_cls,
+            )
+        return None
 
     def transformer(
         self,

tests/integ/test_inference_pipeline.py

@@ -150,6 +150,40 @@ def test_inference_pipeline_model_deploy(sagemaker_session, cpu_instance_type):
         assert "Could not find model" in str(exception.value)
 
 
+@pytest.mark.release
+def test_inference_pipeline_model_register(sagemaker_session):
+    sparkml_data_path = os.path.join(DATA_DIR, "sparkml_model")
+    endpoint_name = unique_name_from_base("test-inference-pipeline-deploy")
+    sparkml_model_data = sagemaker_session.upload_data(
+        path=os.path.join(sparkml_data_path, "mleap_model.tar.gz"),
+        key_prefix="integ-test-data/sparkml/model",
+    )
+
+    sparkml_model = SparkMLModel(
+        model_data=sparkml_model_data,
+        env={"SAGEMAKER_SPARKML_SCHEMA": SCHEMA},
+        sagemaker_session=sagemaker_session,
+    )
+
+    model = PipelineModel(
+        models=[sparkml_model],
+        role="SageMakerRole",
+        sagemaker_session=sagemaker_session,
+        name=endpoint_name,
+    )
+    model_package_group_name = unique_name_from_base("pipeline-model-package")
+    model_package = model.register(model_package_group_name=model_package_group_name)
+    assert model_package.model_package_arn is not None
+
+    sagemaker_session.sagemaker_client.delete_model_package(
+        ModelPackageName=model_package.model_package_arn
+    )
+
+    sagemaker_session.sagemaker_client.delete_model_package_group(
+        ModelPackageGroupName=model_package_group_name
+    )
+
+
 @pytest.mark.slow_test
 @pytest.mark.flaky(reruns=5, reruns_delay=2)
 def test_inference_pipeline_model_deploy_and_update_endpoint(

tests/unit/test_pipeline_model.py

@@ -420,3 +420,27 @@ def test_network_isolation(tfo, time, sagemaker_session):
         vpc_config=None,
         enable_network_isolation=True,
     )
+
+
+def test_pipeline_model_register(sagemaker_session):
+    sagemaker_session.create_model_package_from_containers = Mock(
+        name="create_model_package_from_containers",
+        return_value={
+            "ModelPackageArn": "arn:aws:sagemaker:us-west-2:123456789123:model-package/unit-test-package-version/1"
+        },
+    )
+    framework_model = DummyFrameworkModel(sagemaker_session)
+    sparkml_model = SparkMLModel(
+        model_data=MODEL_DATA_2, role=ROLE, sagemaker_session=sagemaker_session
+    )
+    model = PipelineModel(
+        models=[framework_model, sparkml_model],
+        role=ROLE,
+        sagemaker_session=sagemaker_session,
+        enable_network_isolation=True,
+    )
+    model_package = model.register()
+    assert (
+        model_package.model_package_arn
+        == "arn:aws:sagemaker:us-west-2:123456789123:model-package/unit-test-package-version/1"
+    )