In what ways does PROJEN streamline project configuration for infrastructure and application projects?

Exploring PROJEN and AWS CDK has raised questions for me regarding how PROJEN contributes to standardizing project configurations in the context of multiple projects or repositories. While I see its usefulness for a single project or repository through the projen.js file, I am curious about how it serves as a centralized source of truth for dependencies and configurations across all projects within an organization.

How can PROJEN ensure consistency in dependency management and configuration settings across different project teams and repositories? Is it necessary to manually duplicate the projen.js file for each project, or is there a way to share and enforce a common projen.js template across all projects?

Answer №1

Let me provide an example of how our team utilizes this tool, which may offer some insight.

Within our infrastructure, we utilize a kubernetes platform housing multiple microservices developed and deployed independently by different teams. Despite the individual pace at which each team writes code, there is a shared need for standardized testing and deployment procedures across all microservices within the cluster.

We have implemented a projen construct to represent each 'microservice' project. Within this construct, we define GitHub Actions pipeline files that automate the build and deployment processes to various environments based on branch or designated stages (such as staging and production). Other essential GitHub resources such as PR templates and Issue templates are also included within these constructs. We maintain separate projen constructs for JavaScript-based projects, TypeScript projects, and Python projects, each tailored with language-specific configurations in addition to general GitHub settings.

In conjunction with the projen constructs, we incorporate Dockerfile constructs to outline the structure for building Docker images for the respective projects.

Any modifications to the pipeline logic are addressed centrally within the 'microservice' projen construct. After making updates, a new version is released, notifying all teams about the changes. Teams can then update their repos by running npx projen to integrate the latest features, like the recent inclusion of PR title linting and label checking functionality.

Creating a new repository is simplified by initializing it using the --from argument, ensuring that developers can quickly begin their work with standardized project structures in place.

This framework streamlines project management and promotes consistency across development efforts within our organization.

Answer №2

To create a foundational projen setup, you first establish the configuration and then distribute it to desired projects through a shared NPM registry package.

Whenever adjustments are made to the base setup, you would need to visit the target repositories, update the package, apply any necessary modifications, such as for major changes, re-implement the updates, and submit a pull request.

In essence, this workflow is similar to what you might already be familiar with when using a shared ESLint configuration package.

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