breaking: move ShuffleConfig from sagemaker.session to sagemaker.inputs

src/sagemaker/cli/compatibility/v2/ast_transformer.py

@@ -35,6 +35,7 @@
     modifiers.renamed_params.SessionCreateEndpointImageURIRenamer(),
     modifiers.training_params.TrainPrefixRemover(),
     modifiers.training_input.TrainingInputConstructorRefactor(),
+    modifiers.training_input.ShuffleConfigModuleRenamer(),
     modifiers.serde.SerdeConstructorRenamer(),
 ]
 
@@ -51,6 +52,7 @@
     modifiers.predictors.PredictorImportFromRenamer(),
     modifiers.tfs.TensorFlowServingImportFromRenamer(),
     modifiers.training_input.TrainingInputImportFromRenamer(),
+    modifiers.training_input.ShuffleConfigImportFromRenamer(),
     modifiers.serde.SerdeImportFromAmazonCommonRenamer(),
     modifiers.serde.SerdeImportFromPredictorRenamer(),
 ]

src/sagemaker/cli/compatibility/v2/modifiers/training_input.py

@@ -100,3 +100,73 @@ def modify_node(self, node):
             if node.module == "sagemaker.session":
                 node.module = "sagemaker.inputs"
         return node
+
+
+class ShuffleConfigModuleRenamer(Modifier):
+    """A class to change ``ShuffleConfig`` usage to use ``sagemaker.inputs.ShuffleConfig``."""
+
+    def node_should_be_modified(self, node):
+        """Checks if the ``ast.Call`` node instantiates a class of interest.
+
+        This looks for the following calls:
+
+        - ``sagemaker.session.ShuffleConfig``
+        - ``session.ShuffleConfig``
+
+        Args:
+            node (ast.Call): a node that represents a function call. For more,
+                see https://docs.python.org/3/library/ast.html#abstract-grammar.
+
+        Returns:
+            bool: If the ``ast.Call`` instantiates a class of interest.
+        """
+        if isinstance(node.func, ast.Name):
+            return False
+
+        return matching.matches_name_or_namespaces(
+            node, "ShuffleConfig", ("sagemaker.session", "session")
+        )
+
+    def modify_node(self, node):
+        """Modifies the ``ast.Call`` node to call ``sagemaker.inputs.ShuffleConfig``.
+
+        Args:
+            node (ast.Call): a node that represents a ``sagemaker.session.ShuffleConfig``
+                constructor.
+
+        Returns:
+            ast.Call: the original node, with its namespace changed to use the ``inputs`` module.
+        """
+        _rename_namespace(node, "session")
+        return node
+
+
+class ShuffleConfigImportFromRenamer(Modifier):
+    """A class to update import statements of ``ShuffleConfig``."""
+
+    def node_should_be_modified(self, node):
+        """Checks if the import statement imports ``sagemaker.session.ShuffleConfig``.
+
+        Args:
+            node (ast.ImportFrom): a node that represents a ``from ... import ... `` statement.
+                For more, see https://docs.python.org/3/library/ast.html#abstract-grammar.
+
+        Returns:
+            bool: If the import statement imports ``sagemaker.session.ShuffleConfig``.
+        """
+        return node.module == "sagemaker.session" and any(
+            name.name == "ShuffleConfig" for name in node.names
+        )
+
+    def modify_node(self, node):
+        """Changes the ``ast.ImportFrom`` node's namespace to ``sagemaker.inputs``.
+
+        Args:
+            node (ast.ImportFrom): a node that represents a ``from ... import ... `` statement.
+                For more, see https://docs.python.org/3/library/ast.html#abstract-grammar.
+
+        Returns:
+            ast.ImportFrom: the original node, with its module modified to ``"sagemaker.inputs"``.
+        """
+        node.module = "sagemaker.inputs"
+        return node

src/sagemaker/inputs.py

@@ -72,8 +72,8 @@ def __init__(
                 found in a specified AugmentedManifestFile.
             target_attribute_name (str): The name of the attribute will be predicted (classified)
                 in a SageMaker AutoML job. It is required if the input is for SageMaker AutoML job.
-            shuffle_config (ShuffleConfig): If specified this configuration enables shuffling on
-                this channel. See the SageMaker API documentation for more info:
+            shuffle_config (sagemaker.inputs.ShuffleConfig): If specified this configuration enables
+                shuffling on this channel. See the SageMaker API documentation for more info:
                 https://docs.aws.amazon.com/sagemaker/latest/dg/API_ShuffleConfig.html
         """
         self.config = {
@@ -102,6 +102,22 @@ def __init__(
             self.config["ShuffleConfig"] = {"Seed": shuffle_config.seed}
 
 
+class ShuffleConfig(object):
+    """For configuring channel shuffling using a seed.
+
+    For more detail, see the AWS documentation:
+    https://docs.aws.amazon.com/sagemaker/latest/dg/API_ShuffleConfig.html
+    """
+
+    def __init__(self, seed):
+        """Create a ShuffleConfig.
+
+        Args:
+            seed (long): the long value used to seed the shuffled sequence.
+        """
+        self.seed = seed
+
+
 class FileSystemInput(object):
     """Amazon SageMaker channel configurations for file system data sources.
 

src/sagemaker/session.py

@@ -3362,21 +3362,6 @@ def get_execution_role(sagemaker_session=None):
     raise ValueError(message.format(arn))
 
 
-class ShuffleConfig(object):
-    """
-    Used to configure channel shuffling using a seed. See SageMaker documentation for
-    more detail: https://docs.aws.amazon.com/sagemaker/latest/dg/API_ShuffleConfig.html
-    """
-
-    def __init__(self, seed):
-        """
-        Create a ShuffleConfig.
-        Args:
-            seed (long): the long value used to seed the shuffled sequence.
-        """
-        self.seed = seed
-
-
 def _create_model_request(
     name, role, container_def=None, tags=None
 ):  # pylint: disable=redefined-outer-name

tests/unit/sagemaker/cli/compatibility/v2/modifiers/test_shuffle_config.py

@@ -0,0 +1,74 @@
+# Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"). You
+# may not use this file except in compliance with the License. A copy of
+# the License is located at
+#
+#     http://aws.amazon.com/apache2.0/
+#
+# or in the "license" file accompanying this file. This file is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+# ANY KIND, either express or implied. See the License for the specific
+# language governing permissions and limitations under the License.
+from __future__ import absolute_import
+
+import pasta
+import pytest
+
+from sagemaker.cli.compatibility.v2.modifiers import training_input
+from tests.unit.sagemaker.cli.compatibility.v2.modifiers.ast_converter import ast_call, ast_import
+
+
+@pytest.fixture
+def constructors():
+    return (
+        "sagemaker.session.ShuffleConfig(seed)",
+        "session.ShuffleConfig(seed)",
+    )
+
+
+@pytest.fixture
+def modified_constructors(constructors):
+    return [c.replace("session", "inputs") for c in constructors]
+
+
+def test_constructor_node_should_be_modified(constructors):
+    modifier = training_input.ShuffleConfigModuleRenamer()
+    for constructor in constructors:
+        node = ast_call(constructor)
+        assert modifier.node_should_be_modified(node)
+
+
+def test_constructor_node_should_be_modified_random_call():
+    modifier = training_input.ShuffleConfigModuleRenamer()
+    node = ast_call("FileSystemInput()")
+    assert not modifier.node_should_be_modified(node)
+
+
+def test_constructor_modify_node(constructors, modified_constructors):
+    modifier = training_input.ShuffleConfigModuleRenamer()
+
+    for before, expected in zip(constructors, modified_constructors):
+        node = ast_call(before)
+        modifier.modify_node(node)
+        assert expected == pasta.dump(node)
+
+
+def test_import_from_node_should_be_modified_training_input():
+    modifier = training_input.ShuffleConfigImportFromRenamer()
+    node = ast_import("from sagemaker.session import ShuffleConfig")
+    assert modifier.node_should_be_modified(node)
+
+
+def test_import_from_node_should_be_modified_random_import():
+    modifier = training_input.ShuffleConfigImportFromRenamer()
+    node = ast_import("from sagemaker.session import Session")
+    assert not modifier.node_should_be_modified(node)
+
+
+def test_import_from_modify_node():
+    modifier = training_input.ShuffleConfigImportFromRenamer()
+    node = ast_import("from sagemaker.session import ShuffleConfig")
+
+    modifier.modify_node(node)
+    assert "from sagemaker.inputs import ShuffleConfig" == pasta.dump(node)

tests/unit/test_estimator.py

@@ -26,9 +26,9 @@
 from sagemaker import TrainingInput, utils, vpc_utils
 from sagemaker.algorithm import AlgorithmEstimator
 from sagemaker.estimator import Estimator, EstimatorBase, Framework, _TrainingJob
+from sagemaker.inputs import ShuffleConfig
 from sagemaker.model import FrameworkModel
 from sagemaker.predictor import Predictor
-from sagemaker.session import ShuffleConfig
 from sagemaker.transformer import Transformer
 
 MODEL_DATA = "s3://bucket/model.tar.gz"