Fix(gcloud): Correct service account email format and improve creation

[cjac]

This commit addresses issues in the create-dpgce script related to service account handling, particularly for domain-scoped projects.

• lib/env.sh:

  • Correctly formats the service account email (GSA) for domain-scoped projects (e.g., c9h.org:project-id) by including the domain in the email address (e.g., [email protected]).

• lib/shared-functions.sh:

  • Replaced gcloud iam service-accounts describe with list --filter for a more reliable existence check, as describe was failing to find existing service accounts.
  • Added a retry loop for gcloud projects add-iam-policy-binding to handle potential IAM propagation delays after service account creation.
  • Ensured the script exits if role bindings fail after multiple retries.
  • Cleaned up role binding logic into a loop.

These changes ensure the script can reliably create and configure the necessary service account and its IAM roles, unblocking cluster creation.

[gemini-code-assist[bot]]

Summary of Changes

Hello @cjac, I'm Gemini Code Assist[^1]! 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 significantly enhances the reliability and correctness of service account management within the create-dpgce script. It specifically addresses issues related to service account email formatting for domain-scoped projects and improves the robustness of service account creation and IAM role assignment. By implementing more reliable existence checks and retry mechanisms for IAM policy bindings, these changes ensure that the script can consistently and successfully configure the necessary Google Cloud resources, thereby unblocking cluster creation workflows.

Highlights

• Service Account Email Formatting: The script now correctly formats Google Service Account (GSA) emails for domain-scoped projects (e.g., c9h.org:project-id) by including the domain in the email address, resolving previous issues with incorrect GSA identification.
• Improved Service Account Existence Check: The method for checking if a service account already exists has been made more robust. It now uses gcloud iam service-accounts list --filter instead of describe, which was failing to find existing service accounts reliably.
• Robust IAM Role Binding with Retries: A retry loop has been implemented for gcloud projects add-iam-policy-binding commands. This addresses potential IAM propagation delays after service account creation, ensuring roles are successfully bound. The script will now exit if role bindings fail after multiple retries.
• Streamlined Role Assignment: The logic for assigning IAM roles has been refactored into a loop, making it cleaner and easier to manage. Additionally, the roles/bigquery.dataEditor role has been added to the default set of roles assigned to the service account.

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[cjac]

/gemini review