1. Staging Environments for AI Models with GitHub Branches.

    Python

    When dealing with AI model development, a common practice is to have different stages for testing and validation before deployment. One way to manage these stages is by using GitHub branches that represent different environments, such as development, staging, and production. We can use Pulumi to automate the creation of these environments using GitHub branches.

    In this context, a branch represents an isolated environment where you can develop and test your AI models. When a branch is pushed to GitHub, you could have CI/CD pipelines in place to test the models, and you may want to apply different settings or protections to these branches.

    Below is a Pulumi program that creates three GitHub branches for a given repository: development, staging, and production. Additionally, it sets up branch protection rules for the staging and production branches, ensuring that changes to these branches go through specific workflows, such as pull request reviews or status checks. We also make the production branch the default branch for the repository, implying that it's the main branch from which deployments to production environments are made.

    Please note that you need a Pulumi account and have the Pulumi CLI set up and authenticated with your cloud provider and GitHub. For setting up GitHub with Pulumi, check out the GitHub setup documentation.

    import pulumi import pulumi_github as github # Replace 'example-repo' with the name of your repository and 'your-github-username' with your GitHub username repo_name = 'example-repo' github_username = 'your-github-username' # Create branches for different staging environments # These branches are based on the 'main' branch development_branch = github.Branch("development", branch="development", source_branch="main", repository=repo_name) staging_branch = github.Branch("staging", branch="staging", source_branch="main", repository=repo_name) production_branch = github.Branch("production", branch="production", source_branch="main", repository=repo_name) # Apply branch protection to ensure certain checks are passed before merging into staging and production staging_protection = github.BranchProtection("staging_protection", pattern="staging", repository_id=github.Repository.get("repo", github_username + "/" + repo_name).node_id, enforce_admins=True, required_pull_request_reviews=github.BranchProtectionRequiredPullRequestReviewsArgs( required_approving_review_count=1)) production_protection = github.BranchProtection("production_protection", pattern="production", repository_id=github.Repository.get("repo", github_username + "/" + repo_name).node_id, enforce_admins=True, required_status_checks=github.BranchProtectionRequiredStatusChecksArgs( strict=True, contexts=["ci/travis"]), required_pull_request_reviews=github.BranchProtectionRequiredPullRequestReviewsArgs( required_approving_review_count=2)) # Optional: Set the production branch as the default branch for the repository set_default_branch = github.BranchDefault("set_default_branch", branch="production", repository=repo_name) # Export URLs of created branches pulumi.export('development_branch_url', development_branch.default_branch_ref.apply(lambda ref: ref.branch or "")) pulumi.export('staging_branch_url', staging_branch.default_branch_ref.apply(lambda ref: ref.branch or "")) pulumi.export('production_branch_url', production_branch.default_branch_ref.apply(lambda ref: ref.branch or ""))

    In this program, we are using the following resources from the Pulumi GitHub provider:

    • github.Branch: Used for creating and managing branches within a repository. (GitHub Branch Documentation)
    • github.BranchProtection: Used to set protection rules for branches, such as requiring status checks or review approvals before merging. (GitHub Branch Protection Documentation)
    • github.BranchDefault: (optional) Sets the default branch for the repository. Often the main or master branch is used as the default branch. In a continuous deployment workflow, you might want production to be the default. (GitHub Branch Default Documentation)

    The pulumi.export statements at the end of the program will output the URLs of the created branches for reference. After executing this program with pulumi up, your GitHub repository will have the new branches set up with the specified protections. This creates a structured workflow for evolving and validating AI models in different stages of your deployment pipeline.


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