Victor Chudnovsky

This commit **upgrades the minimum required Python version to 3.9** for the `gapic-generator` and its generated client libraries. This **maintenance** and **refactoring** effort updates the generator's internal `noxfile.py` and dependency requirements, along with the **templates** (`setup.py.j2`, `noxfile.py.j2`, `constraints-3.9.txt.j2`) used for new client library generation. Consequently, **CI/CD workflows** (`tests.yaml`) and **golden integration tests** are adjusted to remove Python 3.7 and 3.8 from their test matrices and dependency configurations. This change streamlines dependency management, simplifies the testing environment, and allows generated libraries to leverage newer Python features.

This commit performs a **cleanup** and **simplification** of the **test suite** for the `google-api-core` package. It specifically targets `test_grpc_helpers.py`, **removing conditional logic** related to the `HAS_GRPC_GCP` flag from various `create_channel` tests. This **maintenance** effort enhances test readability and reduces complexity within the **testing infrastructure**, with no impact on the library's runtime behavior.

This commit performs a significant **maintenance upgrade** for the `google-api-core` package, **requiring Python 3.9+** and **protobuf 4.25.8+**. This change involves **refactoring** the build system, CI workflows, and documentation to remove support for older Python versions (3.7 and 3.8). Consequently, internal code in `google/api_core/_python_package_support.py` and `google/api_core/grpc_helpers.py` is simplified by removing legacy conditional logic and deprecated `grpcio-gcp` support. This update streamlines the development environment, removes technical debt, and ensures compatibility with modern dependencies across the project.

This commit performs **maintenance** on the **testing infrastructure** by removing obsolete `nox.options.sessions` from the `noxfile`. These specific session options were inadvertently left behind after their corresponding test sessions were removed in a prior change (#873). The update ensures the `noxfile` accurately reflects the available test sessions, improving the clarity and efficiency of the test suite configuration.

This commit is a **maintenance chore** that **updates the designated code owners** for the **`google-api-core` package**. It modifies both the `.github/CODEOWNERS` file and the `codeowner_team` field within `.repo-metadata.json` to reflect this change. The new owner team is now **`@googleapis/cloud-sdk-python-team`**, ensuring that the correct group is responsible for code reviews and ongoing maintenance of this critical library and its associated samples.

This commit **prepares for the release of `google-auth` version 2.44.0**, updating the library's version string and state configuration. The new release introduces **significant features** such as mTLS for MDS connections, Python 3.14 support, ECDSA P-384 support, and token revocation capabilities in the STS client. It also includes **critical bug fixes** addressing workload certificate logic for Cloud Run and credential refreshing in `ImpersonatedCredentials`. This **maintenance** commit ensures the **`google-auth` library** provides enhanced security, broader compatibility, and improved reliability for all users.

This commit **exposes** the `parse_version_to_tuple` utility function directly under the **`google.api_core`** module, making it part of the public API. Previously an internal helper, this **new capability** allows external consumers and other library components to easily parse version strings into comparable tuple formats. This change enhances the public interface of `google-api-core` by providing a standardized and accessible method for version string manipulation, improving reusability and consistency across projects.

This commit introduces **new capabilities** to the **`google.api_core`** package by integrating robust checks for Python version and package dependency support. It provides utilities to proactively warn users when running in unsupported Python environments or with outdated package dependencies, improving stability and guiding users to supported configurations. This **feature** enhances the developer experience by providing early feedback on potential compatibility issues, ensuring the library operates within its intended parameters.

This commit introduces a **new capability** to the **GAPIC generator**, enabling generated Python client libraries to perform runtime checks for compatible Python and dependency versions. Specifically, the `__init__.py` template is updated to include version validation logic using the `_get_version` function, and the `setup.py` template now declares `packaging` as a dependency. This ensures that **all future generated GAPIC clients** will proactively verify their execution environment, providing clearer feedback to users about missing or incompatible dependencies. Supporting changes include updating the generator's `noxfile.py` to include necessary build dependencies and adjusting integration test goldens and their associated unit tests to reflect the new generated code and suppress `FutureWarning`s.

This commit **fixes** issues within the **`google-api-core` test suite** by addressing both incorrect asynchronous test designations and potential floating-point comparison errors. It **converts several test methods to `async`** in `packages/google-api-core/tests/asyncio/test_operation_async.py` to properly test asynchronous operations. Additionally, assertions for timeout values in `packages/google-api-core/tests/asyncio/gapic/test_method_async.py` and `packages/google-api-core/tests/unit/gapic/test_method.py` now utilize **`pytest.approx`** to robustly handle floating-point round-off. This **maintenance** work ensures the **reliability and stability of the test suite**, preventing flaky failures and improving the accuracy of test expectations for the **`google-api-core` library**.

This commit performs a **chore** to update the dependency management within the **`gapic-generator`**. It specifically modifies the `_pypi_packages.j2` template to adjust the version bounds for the `google-shopping-type` package. This ensures that all generated Python GAPIC client libraries will now depend on a **stable version** of `google-shopping-type`, improving consistency and reliability for downstream consumers.

This commit performs a **maintenance chore** by updating the `.release-please-manifest.json` file. It specifically corrects the version of the `packages/google-shopping-type` module from `0.1.12` to `1.0.0` within the **release-please configuration**. This update ensures that the **release automation** accurately reflects the current state of the `google-shopping-type` package, rectifying an omission from a prior commit and preventing potential versioning discrepancies in future releases.

This commit performs a **release chore** for the **`google-shopping-type`** Python client library, specifically **updating its package version** from `0.1.12` to `1.0.0`. This change, reflected in `gapic_version.py`, signifies a major version bump, indicating the library is now considered stable and generally available. The update allows users to install or upgrade to the `1.0.0` release, providing a production-ready version of the `google-shopping-type` definitions.

This commit performs a **build maintenance** task by **updating the version number** for the **`google-shopping-merchant-issueresolution` client library**. It specifically **resets the package version from `0.1.0` to `0.0.0`** within the `gapic_version.py` files for both the main `merchant_issueresolution` and its `v1beta` sub-package. This change is crucial for ensuring proper versioning alignment, likely in preparation for future releases, and primarily impacts the **packaging and release process** of the library.

This commit introduces several **new features** to the **Google Cloud Private CA client library**, primarily within the `privateca_v1` module. It adds support for **Relative Distinguished Name (RDN) sequences**, **user-defined access URLs**, and **backdate duration** for certificates, alongside including `tbs_certificate_digest` in the `CertificateDescription`. These additions expand the library's capabilities for more granular certificate management and description. The changes involve exposing new types like `AttributeType` and `RelativeDistinguishedName`, updating docstrings, and adjusting unit tests to reflect the new API fields.

This commit introduces a **new capability** to the **Network Services V1 API client library** by adding **isolation support** for service load balancing policies. It prevents cross-region overflow by introducing an `isolation_config` field to the `ServiceLbPolicy` message. This feature includes new `IsolationGranularity` and `IsolationMode` enums, and an `IsolationConfig` message, impacting how users define and manage their load balancing policies. The changes are reflected in the `service_lb_policy.py` type definitions and corresponding unit tests for `create_service_lb_policy` and `update_service_lb_policy`.

This **feature update** to the **Compute Engine v1beta API** introduces the new `perform_maintenance` method for **ReservationSubBlocks**, allowing users to programmatically initiate maintenance operations. It includes new client methods, request types like `PerformMaintenanceReservationSubBlockRequest`, and updates to existing data structures such as `GroupMaintenanceInfo` and `ReservationSubBlock`. This **API enhancement** provides expanded control over compute resources within the `google-cloud-compute-v1beta` library. The update also adds comprehensive unit tests and new samples for the `perform_maintenance` method, ensuring robust functionality and ease of adoption.

This commit **updates the Compute Engine v1 API client** to revision 20250626, introducing significant **new capabilities** for resource management within the `google-cloud-compute` library. It adds a new `perform_maintenance` method to the **`ReservationSubBlocks` service**, allowing users to programmatically manage maintenance operations for reserved resources, complete with new request types and client implementations. Additionally, **`BackendService` configurations now support new TLS settings**, enhancing security and flexibility for load balancing. This **feature update** expands the library's functionality, providing more granular control over Compute Engine resources and aligning with the latest API specification.

This commit introduces **new capabilities** for **TLS configuration** within the **`google-cloud-managedkafka` client library**, specifically for the `v1` API. It adds new message types, `TlsConfig` and `TrustConfig`, and integrates a `tls_config` field into the `Cluster` resource, allowing users to define TLS settings for their Kafka clusters. Furthermore, static helper methods like `ca_pool_path` and `parse_ca_pool_path` are added to the client to facilitate handling CA pool resource paths. These updates enable enhanced security configurations for **Managed Kafka clusters**, accompanied by routine version updates and new unit tests.

This commit introduces a **new capability** to the **Google Cloud Dataplex API** by adding a `semantic_search` boolean field to the `SearchEntriesRequest` message. This enhancement allows users to specify a new search parameter when querying Dataplex entries, potentially enabling more advanced or semantically aware search operations. The change primarily affects the `google-cloud-dataplex` client library, updating its type definitions in `catalog.py`, internal keyword lists, and unit tests for the `search_entries` method. This feature extends the search functionality within the Dataplex service.