feat: add support for bucket encryption enforcement config #1742

rajeevpodar · 2026-02-05T10:52:45Z

Implemented bucket encryption enforcement configuration support.
Added EncryptionEnforcementConfig and BucketEncryption classes.
Added encryption property to Bucket.
Added unit tests.

PR created automatically by Jules for task 10151670798613550332 started by @rajeevpodar

This change introduces support for configuring bucket encryption enforcement, including: - `defaultKmsKeyName` (via `BucketEncryption`) - `googleManagedEncryptionEnforcementConfig` - `customerManagedEncryptionEnforcementConfig` - `customerSuppliedEncryptionEnforcementConfig` New classes `EncryptionEnforcementConfig` and `BucketEncryption` are added to `google/cloud/storage/bucket.py` to wrap the API configuration. The `Bucket` class now exposes an `encryption` property. Tests are added in `tests/unit/test_bucket.py`. Co-authored-by: rajeevpodar <3637722+rajeevpodar@users.noreply.github.com>

google-labs-jules · 2026-02-05T10:52:47Z

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gemini-code-assist · 2026-02-05T10:53:01Z

Summary of Changes

Hello @rajeevpodar, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the Google Cloud Storage client library by introducing robust support for managing bucket encryption enforcement configurations. It provides a structured API for users to define and apply various encryption policies, including setting restriction modes and handling different types of encryption (Google-managed, customer-managed, and customer-supplied) directly through the Bucket object. This feature allows for more granular control over data security and compliance within cloud storage buckets.

Highlights

New encryption property for Bucket: A new encryption property has been added to the Bucket class, allowing retrieval and setting of bucket-level encryption configurations.
Introduction of EncryptionEnforcementConfig class: A new class, EncryptionEnforcementConfig, has been introduced to represent and manage the restriction mode and effective time for encryption enforcement policies.
Introduction of BucketEncryption class: A new class, BucketEncryption, has been added to encapsulate the overall encryption configuration for a bucket, including the default KMS key name and specific enforcement configurations for Google-managed, customer-managed, and customer-supplied encryption.
New constants for encryption enforcement modes: Two new constants, ENFORCEMENT_MODE_FULLY_RESTRICTED and ENFORCEMENT_MODE_NOT_RESTRICTED, have been added to define bucket encryption restriction modes.
Comprehensive unit tests: Extensive unit tests have been added for the new encryption property on the Bucket class, as well as for the EncryptionEnforcementConfig and BucketEncryption classes, ensuring proper functionality and integration.

Changelog

google/cloud/storage/bucket.py
- Added encryption property (getter and setter) to the Bucket class.
- Introduced EncryptionEnforcementConfig class for managing encryption restriction modes and effective times.
- Introduced BucketEncryption class to manage default KMS keys and various encryption enforcement configurations.
google/cloud/storage/constants.py
- Added ENFORCEMENT_MODE_FULLY_RESTRICTED constant.
- Added ENFORCEMENT_MODE_NOT_RESTRICTED constant.
tests/unit/test_bucket.py
- Added unit tests for the Bucket.encryption property.
- Added a new test class Test_EncryptionEnforcementConfig with tests for its constructor, from_api_repr, and restriction_mode setter.
- Added a new test class Test_BucketEncryption with tests for its constructor, from_api_repr, and property setters that trigger _patch_property.

Activity

No human activity (comments, reviews, or progress updates) has been recorded for this pull request yet.

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Code Review

This pull request adds support for bucket encryption enforcement configuration, introducing EncryptionEnforcementConfig and BucketEncryption classes and adding an encryption property to the Bucket class. The changes are well-structured and include corresponding unit tests. I have a few suggestions to improve code quality and test robustness.

gemini-code-assist · 2026-02-05T10:56:11Z

google/cloud/storage/bucket.py

+        This value should normally only be set by the back-end API.
+    """
+
+    def __init__(self, restriction_mode=None, effective_time=None, **kw):


The **kw parameter in the EncryptionEnforcementConfig constructor is unused. Removing it would clean up the method signature and prevent accidental misuse with unsupported arguments.

Suggested change

def __init__(self, restriction_mode=None, effective_time=None, **kw):

def __init__(self, restriction_mode=None, effective_time=None):

gemini-code-assist · 2026-02-05T10:56:11Z

tests/unit/test_bucket.py

+    def test_restriction_mode_setter(self):
+        config = self._make_one()
+        self.assertIsNone(config.restriction_mode)
+        config.restriction_mode = "FULLY_RESTRICTED"


Throughout the new tests, hardcoded strings like "FULLY_RESTRICTED" and "NOT_RESTRICTED" are used. It would be better to use the constants ENFORCEMENT_MODE_FULLY_RESTRICTED and ENFORCEMENT_MODE_NOT_RESTRICTED from google.cloud.storage.constants. This improves maintainability and consistency. This applies here and in Test_BucketEncryption (e.g., lines 4841, 4850, 4859, 4866, 4878, 4883). You'll need to add the necessary import.

Suggested change

config.restriction_mode = "FULLY_RESTRICTED"

config.restriction_mode = ENFORCEMENT_MODE_FULLY_RESTRICTED

@rajeevpodar don't accept this, msged you privately

gemini-code-assist · 2026-02-05T10:56:11Z

tests/unit/test_bucket.py

+        encryption.default_kms_key_name = "new-key"
+        bucket._patch_property.assert_called_with("encryption", encryption)
+
+        config = EncryptionEnforcementConfig("NOT_RESTRICTED")
+        encryption.google_managed_encryption_enforcement_config = config
+        bucket._patch_property.assert_called_with("encryption", encryption)
+        self.assertEqual(
+            encryption.google_managed_encryption_enforcement_config.restriction_mode,
+            "NOT_RESTRICTED",
+        )
+
+        encryption.customer_managed_encryption_enforcement_config = config
+        bucket._patch_property.assert_called_with("encryption", encryption)
+
+        encryption.customer_supplied_encryption_enforcement_config = config
+        bucket._patch_property.assert_called_with("encryption", encryption)


The repeated use of assert_called_with only verifies the most recent call to bucket._patch_property. This can make the test brittle. To ensure that each setter triggers a call, it would be more robust to check the call_count after each call, or to use mock.assert_has_calls at the end of the test to verify all expected calls were made.

For example:

bucket = self._make_bucket() encryption = self._make_one(bucket) encryption.default_kms_key_name = "new-key" config = EncryptionEnforcementConfig("NOT_RESTRICTED") encryption.google_managed_encryption_enforcement_config = config encryption.customer_managed_encryption_enforcement_config = config encryption.customer_supplied_encryption_enforcement_config = config self.assertEqual(bucket._patch_property.call_count, 4) bucket._patch_property.assert_called_with("encryption", encryption)

This change introduces support for configuring bucket encryption enforcement, including: - `defaultKmsKeyName` (via `BucketEncryption`) - `googleManagedEncryptionEnforcementConfig` - `customerManagedEncryptionEnforcementConfig` - `customerSuppliedEncryptionEnforcementConfig` New classes `EncryptionEnforcementConfig` and `BucketEncryption` are added to `google/cloud/storage/bucket.py` to wrap the API configuration. The `Bucket` class now exposes an `encryption` property. Tests are added in `tests/unit/test_bucket.py` and `tests/system/test_bucket.py`. Co-authored-by: rajeevpodar <3637722+rajeevpodar@users.noreply.github.com>

This change introduces support for configuring bucket encryption enforcement, including: - `defaultKmsKeyName` (via `BucketEncryption`) - `googleManagedEncryptionEnforcementConfig` - `customerManagedEncryptionEnforcementConfig` - `customerSuppliedEncryptionEnforcementConfig` New classes `EncryptionEnforcementConfig` and `BucketEncryption` are added to `google/cloud/storage/bucket.py` to wrap the API configuration. The `Bucket` class now exposes an `encryption` property. Tests are added in `tests/unit/test_bucket.py` and `tests/system/test_bucket.py`. Addressed review comments regarding kwargs handling, constants usage in tests, and null safety in getters. Co-authored-by: rajeevpodar <3637722+rajeevpodar@users.noreply.github.com>

This change introduces support for configuring bucket encryption enforcement, including: - `defaultKmsKeyName` (via `BucketEncryption`) - `googleManagedEncryptionEnforcementConfig` - `customerManagedEncryptionEnforcementConfig` - `customerSuppliedEncryptionEnforcementConfig` New classes `EncryptionEnforcementConfig` and `BucketEncryption` are added to `google/cloud/storage/bucket.py` to wrap the API configuration. The `Bucket` class now exposes an `encryption` property. Tests are added in `tests/unit/test_bucket.py` and `tests/system/test_bucket.py`. Addressed review comments: - Handling `**kw` in `EncryptionEnforcementConfig.__init__` for forward compatibility. - Using constants for restriction modes in tests. - Improving test robustness. - Formatting with black. Co-authored-by: rajeevpodar <3637722+rajeevpodar@users.noreply.github.com>

chandra-siri · 2026-02-06T10:01:56Z

google/cloud/storage/constants.py

 """
+
+ENFORCEMENT_MODE_FULLY_RESTRICTED = "FULLY_RESTRICTED"
+"""Bucket encryption restriction mode where encryption is fully restricted."""


nit: comment should be above the variable name.

chandra-siri · 2026-02-06T10:04:06Z

google/cloud/storage/bucket.py

+    :type restriction_mode: str
+    :param restriction_mode:
+        (Optional) The restriction mode for the encryption type.
+        See: https://cloud.google.com/storage/docs/json_api/v1/buckets#encryption


nit: docs not yet updated.

chandra-siri · 2026-02-06T10:05:19Z

google/cloud/storage/bucket.py

+        if effective_time is not None:
+            data["effectiveTime"] = _datetime_to_rfc3339(effective_time)


this is server provided. We should not be mutating this. (I guess, server will ignore this field if it's set in request anyway)

chandra-siri · 2026-02-06T10:15:38Z

tests/unit/test_bucket.py

+    def test_restriction_mode_setter(self):
+        config = self._make_one()
+        self.assertIsNone(config.restriction_mode)
+        config.restriction_mode = "FULLY_RESTRICTED"


@rajeevpodar don't accept this, msged you privately

chandra-siri · 2026-02-06T10:16:37Z

tests/system/test_bucket.py

lot of tests are deleted. Jules hallucinated ?

rajeevpodar requested review from a team as code owners February 5, 2026 10:52

rajeevpodar requested a review from a team as a code owner February 5, 2026 10:52

product-auto-label bot added the size: l Pull request size is large. label Feb 5, 2026

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product-auto-label bot added the api: storage Issues related to the googleapis/python-storage API. label Feb 5, 2026

rajeevpodar marked this pull request as draft February 5, 2026 10:55

gemini-code-assist bot reviewed Feb 5, 2026

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google-labs-jules bot and others added 2 commits February 5, 2026 17:35

chandra-siri requested changes Feb 6, 2026

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feat: add support for bucket encryption enforcement config #1742

feat: add support for bucket encryption enforcement config #1742

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	def __init__(self, restriction_mode=None, effective_time=None, **kw):
	def __init__(self, restriction_mode=None, effective_time=None):

	config.restriction_mode = "FULLY_RESTRICTED"
	config.restriction_mode = ENFORCEMENT_MODE_FULLY_RESTRICTED

		if effective_time is not None:
		data["effectiveTime"] = _datetime_to_rfc3339(effective_time)

feat: add support for bucket encryption enforcement config #1742

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