fix: CDK nags for sagemaker custom kernel module

modules/sagemaker/sagemaker-custom-kernel/app.py

@@ -4,6 +4,7 @@
 import os
 
 import aws_cdk as cdk
+import cdk_nag
 from aws_cdk import CfnOutput
 
 from stack import CustomKernelStack
@@ -25,19 +26,13 @@ def _param(name: str) -> str:
     return f"SEEDFARMER_PARAMETER_{name}"
 
 
-sagemaker_image_name = os.getenv(
-    _param("SAGEMAKER_IMAGE_NAME"), DEFAULT_SAGEMAKER_IMAGE_NAME
-)
+sagemaker_image_name = os.getenv(_param("SAGEMAKER_IMAGE_NAME"), DEFAULT_SAGEMAKER_IMAGE_NAME)
 ecr_repo_name = os.getenv(_param("ECR_REPO_NAME"))  # type: ignore
-app_image_config_name = os.getenv(
-    _param("APP_IMAGE_CONFIG_NAME"), DEFAULT_APP_IMAGE_CONFIG_NAME
-)
+app_image_config_name = os.getenv(_param("APP_IMAGE_CONFIG_NAME"), DEFAULT_APP_IMAGE_CONFIG_NAME)
 custom_kernel_name = os.getenv(_param("CUSTOM_KERNEL_NAME"), DEFAULT_CUSTOM_KERNEL_NAME)
 kernel_user_uid = os.getenv(_param("KERNEL_USER_UID"), DEFAULT_USER_UID)
 kernel_user_gid = os.getenv(_param("KERNEL_USER_GID"), DEFAULT_USER_GID)
-mount_path = os.getenv(
-    _param("KERNEL_USER_HOME_MOUNT_PATH"), DEFAULT_KERNEL_USER_HOME_MOUNT_PATH
-)
+mount_path = os.getenv(_param("KERNEL_USER_HOME_MOUNT_PATH"), DEFAULT_KERNEL_USER_HOME_MOUNT_PATH)
 sm_studio_domain_id = os.getenv(_param("STUDIO_DOMAIN_ID"))
 sm_studio_domain_name = os.getenv(_param("STUDIO_DOMAIN_NAME"))
 
@@ -80,4 +75,6 @@ def _param(name: str) -> str:
     ),
 )
 
+cdk.Aspects.of(app).add(cdk_nag.AwsSolutionsChecks(log_ignores=True))
+
 app.synth()

modules/sagemaker/sagemaker-custom-kernel/pyproject.toml

@@ -1,35 +1,42 @@
-[tool.black]
+[tool.ruff]
+exclude = [
+    ".eggs",
+    ".git",
+    ".hg",
+    ".mypy_cache",
+    ".ruff_cache",
+    ".tox",
+    ".venv",
+    "_build",
+    "buck-out",
+    "build",
+    "dist",
+    "codeseeder",
+]
 line-length = 120
-target-version = ["py36", "py37", "py38", "py39"]
-exclude = '''
-/(
-    \.eggs
-  | \.git
-  | \.hg
-  | \.mypy_cache
-  | \.tox
-  | \.venv
-  | \.env
-  | _build
-  | buck-out
-  | build
-  | dist
-  | codeseeder.out
-)/
-'''
+target-version = "py38"
+
+[tool.ruff.lint]
+select = ["F", "I", "E", "W"]
+fixable = ["ALL"]
+
+[tool.mypy]
+python_version = "3.8"
+strict = true
+ignore_missing_imports = true
+disallow_untyped_decorators = false
+exclude = "codeseeder.out/|example/|tests/|scripts/"
+warn_unused_ignores = false
 
-[tool.isort]
-multi_line_output = 3
-include_trailing_comma = true
-force_grid_wrap = 0
-use_parentheses = true
-ensure_newline_before_comments = true
-line_length = 120
-py_version = 38
-skip_gitignore = false
 
 [tool.pytest.ini_options]
-addopts = "-v --cov=. --cov-report term --cov-config=coverage.ini --cov-fail-under=80"
+addopts = "-v --cov=. --cov-report term"
 pythonpath = [
   "."
-]
+]
+
+[tool.coverage.run]
+omit = ["tests/*"]
+
+[tool.coverage.report]
+fail_under = 80

modules/sagemaker/sagemaker-custom-kernel/scripts/update_domain.py

@@ -12,9 +12,7 @@
 
 # Module Parameters
 image_name = os.getenv("SEEDFARMER_PARAMETER_SAGEMAKER_IMAGE_NAME", "echo-kernel")
-app_image_config_name = os.getenv(
-    "SEEDFARMER_PARAMETER_APP_IMAGE_CONFIG_NAME", "echo-kernel"
-)
+app_image_config_name = os.getenv("SEEDFARMER_PARAMETER_APP_IMAGE_CONFIG_NAME", "echo-kernel")
 sm_studio_domain_id = os.environ.get("SEEDFARMER_PARAMETER_STUDIO_DOMAIN_ID")
 sm_studio_domain_name = os.environ.get("SEEDFARMER_PARAMETER_STUDIO_DOMAIN_NAME")
 
@@ -47,13 +45,9 @@ def update_domain():
         merged_distinct_custom_images = list(
             dict((v["AppImageConfigName"], v) for v in existing_custom_images).values(),
         )
-        default_user_settings["KernelGatewayAppSettings"]["CustomImages"] = (
-            merged_distinct_custom_images
-        )
+        default_user_settings["KernelGatewayAppSettings"]["CustomImages"] = merged_distinct_custom_images
 
-        print(
-            f"Updating Sagemaker Studio Domain - {sm_studio_domain_name} ({sm_studio_domain_id})"
-        )
+        print(f"Updating Sagemaker Studio Domain - {sm_studio_domain_name} ({sm_studio_domain_id})")
         print(default_user_settings)
         sm_client.update_domain(
             DomainId=sm_studio_domain_id,

modules/sagemaker/sagemaker-custom-kernel/setup.cfg

@@ -18,12 +18,3 @@ exclude =
     codeseeder.out,
     bundle
     tests
-
-[mypy]
-python_version = 3.7
-strict = True
-ignore_missing_imports = True
-allow_untyped_decorators = True
-exclude =
-  codeseeder.out/|example/|tests/|scripts/
-warn_unused_ignores = False

modules/sagemaker/sagemaker-custom-kernel/stack.py

@@ -4,8 +4,7 @@
 import os
 from typing import Any
 
-import cdk_nag
-from aws_cdk import Aspects, Stack, Tags
+from aws_cdk import Stack, Tags
 from aws_cdk import aws_ecr as ecr
 from aws_cdk import aws_iam as iam
 from aws_cdk import aws_sagemaker as sagemaker
@@ -35,9 +34,7 @@ def __init__(
         Tags.of(self).add(key="Deployment", value=app_prefix[:64])
 
         # ECR Image deployment
-        repo = ecr.Repository.from_repository_name(
-            self, id=f"{app_prefix}-ecr-repo", repository_name=ecr_repo_name
-        )
+        repo = ecr.Repository.from_repository_name(self, id=f"{app_prefix}-ecr-repo", repository_name=ecr_repo_name)
 
         local_image = DockerImageAsset(
             self,
@@ -63,9 +60,7 @@ def __init__(
             role_name=f"{app_prefix}-image-role",
             assumed_by=iam.ServicePrincipal("sagemaker.amazonaws.com"),
             managed_policies=[
-                iam.ManagedPolicy.from_aws_managed_policy_name(
-                    "AmazonSageMakerFullAccess"
-                ),
+                iam.ManagedPolicy.from_aws_managed_policy_name("AmazonSageMakerFullAccess"),
             ],
         )
 
@@ -107,22 +102,20 @@ def __init__(
         )
         app_image_config.node.add_dependency(image_version)
 
-        Aspects.of(self).add(cdk_nag.AwsSolutionsChecks())
         NagSuppressions.add_stack_suppressions(
             self,
-            apply_to_nested_stacks=True,
             suppressions=[
                 NagPackSuppression(
-                    **{
-                        "id": "AwsSolutions-IAM4",
-                        "reason": "Image Role needs Sagemaker Full Access",
-                    }
+                    id="AwsSolutions-IAM4",
+                    reason="Image Role needs Sagemaker Full Access",
+                    applies_to=[
+                        "Policy::arn:<AWS::Partition>:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole",
+                        "Policy::arn:<AWS::Partition>:iam::aws:policy/AmazonSageMakerFullAccess",
+                    ],
                 ),
                 NagPackSuppression(
-                    **{
-                        "id": "AwsSolutions-IAM5",
-                        "reason": "ECR Deployment Service Role needs Full Access",
-                    }
+                    id="AwsSolutions-IAM5",
+                    reason="ECR Deployment Service Role needs Full Access",
                 ),
             ],
         )

modules/sagemaker/sagemaker-custom-kernel/tests/test_stack.py

@@ -5,8 +5,9 @@
 import sys
 
 import aws_cdk as cdk
+import cdk_nag
 import pytest
-from aws_cdk.assertions import Template
+from aws_cdk.assertions import Annotations, Match, Template
 
 
 @pytest.fixture(scope="function")
@@ -20,7 +21,8 @@ def stack_defaults():
         del sys.modules["stack"]
 
 
-def test_synthesize_stack(stack_defaults):
+@pytest.fixture(scope="function")
+def stack(stack_defaults) -> cdk.Stack:
     import stack
 
     app = cdk.App()
@@ -36,7 +38,7 @@ def test_synthesize_stack(stack_defaults):
     kernel_user_gid = 100
     mount_path = "/root"
 
-    stack = stack.CustomKernelStack(
+    return stack.CustomKernelStack(
         app,
         app_prefix,
         env=cdk.Environment(
@@ -53,9 +55,21 @@ def test_synthesize_stack(stack_defaults):
         mount_path=mount_path,
     )
 
+
+def test_synthesize_stack(stack: cdk.Stack) -> None:
     template = Template.from_stack(stack)
 
     template.resource_count_is("AWS::IAM::Role", 2)
     template.resource_count_is("AWS::SageMaker::Image", 1)
     template.resource_count_is("AWS::SageMaker::ImageVersion", 1)
     template.resource_count_is("AWS::SageMaker::AppImageConfig", 1)
+
+
+def test_no_cdk_nag_errors(stack: cdk.Stack) -> None:
+    cdk.Aspects.of(stack).add(cdk_nag.AwsSolutionsChecks())
+
+    nag_errors = Annotations.from_stack(stack).find_error(
+        "*",
+        Match.string_like_regexp(r"AwsSolutions-.*"),
+    )
+    assert not nag_errors, f"Found {len(nag_errors)} CDK nag errors"