Platform-Wide OpenRewrite Implementation Strategy

# Platform-Wide OpenRewrite Implementation Strategy

This document outlines a strategy for automating and managing OpenRewrite recipes across multiple development teams within the platform. It incorporates ideas from our initial discussion and subsequent refinements.

## 1. Centralized Recipe Management

Goal: To establish a single source of truth for OpenRewrite recipes, promoting consistency, quality, and discoverability.

*Dedicated Git Repository (`openrewrite-recipes`):**

    * A central Git repository will store and version-control all custom OpenRewrite recipes.

    * Teams will contribute their specific recipes through pull requests.

    * A central team will manage and curate the recipes, ensuring quality and consistency.

    * This repository will serve as the single source of truth for organization-wide recipes.

*Categorization of Recipes:**

    * Within the central repository, recipes will be organized into categories (e.g., `java`, `kotlin`, `maven`, `gradle`, `security`, `style`).

    * This categorization will facilitate easier discovery of relevant recipes by development teams.

## 2. Automation of Recipe Application

Goal: To seamlessly integrate OpenRewrite into the development workflow.

*Build Tool Integration:**

    * Leverage the OpenRewrite plugins for Maven and Gradle.

    * Standardized build configurations (either inherited in parent POM/build files or provided as templates) will include the OpenRewrite plugin.

*Configuration via `rewrite.yml`:**

    * Each project will contain a `rewrite.yml` file.

    * This file will:

        * Reference organization-wide recipes by name (resolved by the OpenRewrite plugin).

        * Configure parameters for both organization-wide and project-specific recipes.

        * Include any team-specific recipes (either defined directly or referencing Java recipes within the project).

    * Consider providing default `rewrite.yml` templates with common organization-wide recipes.

*Orchestration Pipelines (Optional):**

    * For broader application or scheduled runs, OpenRewrite can be integrated into CI/CD pipelines.

    * This could involve dedicated stages to run OpenRewrite or triggering recipe runs based on events (e.g., pull requests).

## 3. Handling Different Recipe Needs

Goal: To allow teams flexibility while benefiting from centralized recipes.

*Mix and Match:** Teams can combine organization-wide recipes with their project-specific recipes within their `rewrite.yml`.

*Templating:** Provide templates for `rewrite.yml` files that include common recipes and placeholders for team-specific additions.

## 4. Initial Focus Areas

We will initially focus on creating recipes for the following cross-cutting concerns:

* Code Style and Formatting

* Dependency Management (updates, vulnerability checks)

* Basic Security Checks

## 5. Central Recipe Repository Structure (Further Discussion)

To optimize discoverability and maintainability of the central recipe repository (`openrewrite-recipes`), we should consider the following organizational strategies:

*Clear Categorization:** As mentioned above, well-defined categories are crucial.

*Standardized Naming Conventions:** Implement a consistent naming scheme for recipes (e.g., `java.spring.boot-upgrade-3`).

*Comprehensive Documentation:** Each recipe should have clear documentation explaining its purpose, usage, and any configurable parameters. This documentation could be part of the recipe definition (e.g., in a YAML comment or a separate README within the recipe's directory).

*Examples:** Providing example `rewrite.yml` configurations demonstrating how to use each recipe would be beneficial.

## Potential Workflow

1.  The central `openrewrite-recipes` Git repository is maintained with categorized and well-documented recipes.

2.  Standardized Maven/Gradle build configurations include the OpenRewrite plugin.

3.  Each team includes a `rewrite.yml` in their project, referencing organization-wide recipes and adding project-specific ones.

4.  OpenRewrite runs as part of the local build and/or CI/CD pipelines, applying the configured recipes.

---

This outlines our current thinking. What are your initial reactions to this consolidated plan? Is there anything you'd like to refine or add?