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adding new module spanner in cluster toolkit.#5592

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arpit974 merged 2 commits into
GoogleCloudPlatform:developfrom
arpit974:new-spanner-module
May 11, 2026
Merged

adding new module spanner in cluster toolkit.#5592
arpit974 merged 2 commits into
GoogleCloudPlatform:developfrom
arpit974:new-spanner-module

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@arpit974 arpit974 commented May 4, 2026

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Adding a Spanner module for instance, database, and IAM management.

This module provides a standardized way to provision Google Cloud Spanner infrastructure. It supports the creation of Spanner instances and multiple databases within a single declarative block, including automated IAM configuration for database-level access.

Key Changes:

Instance Provisioning: Supports configurable processing units, regional configurations, and instance editions.
Multi-Database Management: Uses a map-based variable to provision multiple databases with individual deletion protection settings.
Automated IAM: Includes logic to flatten and apply IAM member bindings across all created databases, specifically for the roles/spanner.databaseUser role.
Service Enablement: Ensures the spanner.googleapis.com API is enabled in the target project before resource creation.

Submission Checklist

NOTE: Community submissions can take up to 2 weeks to be reviewed.

Please take the following actions before submitting this pull request.

  • Fork your PR branch from the Toolkit "develop" branch (not main)
  • Test all changes with pre-commit in a local branch #
  • Confirm that "make tests" passes all tests
  • Add or modify unit tests to cover code changes
  • Ensure that unit test coverage remains above 80%
  • Update all applicable documentation
  • Follow Cluster Toolkit Contribution guidelines #

@gemini-code-assist

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Summary of Changes

Hello, 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 introduces a new module to the Cluster Toolkit, enabling users to provision and configure Google Cloud Spanner resources. The module supports instance creation, database definition, and IAM member management, providing a structured way to integrate Spanner into infrastructure deployments.

Highlights

  • New Spanner Module: Added a new Terraform module to facilitate the creation and management of Google Cloud Spanner instances and databases within the Cluster Toolkit.
  • IAM Support: Included support for configuring IAM members for Spanner databases directly through the module.
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Code Review

This pull request introduces a new Spanner module for the Cluster Toolkit, providing functionality to manage Spanner instances, databases, and IAM permissions. The review identifies several necessary improvements: relaxing the pinned Terraform version to a range for better compatibility, increasing the minimum Google provider version to support the 'edition' attribute, and evaluating the inclusion of the Spanner API resource to avoid blueprint conflicts. Furthermore, the module must be added to the global modules index as per the style guide, and the documentation should be updated to reflect the corrected version constraints.

Comment thread modules/database/spanner/versions.tf
Comment thread modules/database/spanner/versions.tf Outdated
Comment thread modules/database/spanner/main.tf Outdated
Comment thread modules/database/spanner/README.md
Comment thread modules/database/spanner/README.md Outdated
Comment thread modules/database/spanner/README.md Outdated
@arpit974 arpit974 marked this pull request as ready for review May 4, 2026 06:46
@arpit974 arpit974 requested a review from a team as a code owner May 4, 2026 06:46
@arpit974 arpit974 added the release-new-modules Added to release notes under the "New Modules" heading. label May 4, 2026

@kvenkatachala333 kvenkatachala333 left a comment

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LGTM. Just a minor nit: please handle the gemini suggestion of ensuring new module is added to the index in the root modules/README.md file as required by the repository style guide

@arpit974 arpit974 merged commit c04df13 into GoogleCloudPlatform:develop May 11, 2026
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2 participants