This document outlines the CI/CD automation scripts used within the Cilium project. It serves as a comprehensive guide for developers who are looking to understand how continuous integration and continuous deployment are automated in this project.

Overview of CI/CD Setup

Currently, the CI/CD processes are implemented through a combination of JavaScript, shell scripts, and CSS for integration with testing and deployment processes. The specific scripts that support the CI/CD workflow include pre-commit checks and integration tests.

Existing CI/CD Scripts

1. Husky Hooks: The Cilium project leverages Husky to manage Git hooks.

   • Pre-commit Hook (.husky/pre-commit): This script runs before each commit is made. It can be used to enforce linting rules, check for uncommitted changes, or run tests.

     #!/bin/sh
     . "$(dirname "$0")/_/husky.sh"
     
     # Run lint checks
     npm run lint
     
     # Run tests
     npm test
     

   • Commit Message Hook (.husky/commit-msg): This checks the format of commit messages to ensure they adhere to conventions.

     #!/bin/sh
     . "$(dirname "$0")/_/husky.sh"
     
     commit_msg_file="$1"
     commit_msg=$(cat "$commit_msg_file")
     
     # Simple regex check on commit message format
     if ! echo "$commit_msg" | grep -qE '^\[JIRA-[0-9]+\] '; then
       echo "Commit message must start with [JIRA-XXXX] format."
       exit 1
     fi
     

Scripts for Testing and Validation

The following script patterns provide insight into automated testing practices.

2. Integration Testing: Integration tests can be set up with commands defined in your package.json file.

   In package.json:

   {
     "scripts": {
       "test": "jest",
       "lint": "eslint ."
     }
   }
   

3. Shell Script for Environment Setup: You might also find shell scripts that set the environment for the CI/CD process.

   Example: setup-environment.sh

   #!/bin/bash
   
   echo "Setting up environment..."
   npm install
   # Additional setup commands
   

Workflow Steps

Here’s a typical workflow showcasing how CI/CD automation operates.

1. Developer Commit: A developer gets started with coding and commits the changes.

2. Pre-commit Hooks:

   • The pre-commit hook runs checking for code quality and tests.
   • If the checks fail, the commit is rejected with appropriate error messages.

3. Integration Tests:

   • After a merge to the main branch, CI services run integration scripts via CI/CD tools such as GitHub Actions or Travis CI.
   • These tools execute defined scripts that may look like, for example:

   name: CI
   
   on:
     push:
       branches:
         - main
   
   jobs:
     build:
       runs-on: ubuntu-latest
   
       steps:
       - name: Checkout code
         uses: actions/checkout@v2
       
       - name: Setup Node.js
         uses: actions/setup-node@v2
         with:
           node-version: '14'
       
       - name: Install dependencies
         run: npm install
       
       - name: Run tests
         run: npm test
   

Next Steps

If CI/CD automation is not set up in the project, there are several recommended next steps:

1. Define CI/CD Requirements: Establish the criteria for continuous integration and deployment that align with the project’s needs.

2. Choose CI/CD Tool: Decide on a CI/CD tool, such as GitHub Actions, Travis CI, or CircleCI, based on team familiarity and project requirements.

3. Set Up Initial Scripts: Create the basic scripts to handle pre-commit checks, builds, and testing.

4. Create Documentation: Document the CI/CD pipeline for future contributors and to ensure adherence to established practices.

5. Iterate and Improve: Regularly review CI/CD processes for improvements and to incorporate new best practices.

In conclusion, the CI/CD process is vital to maintain code quality and streamline deployments. By employing scripts effectively, the Cilium project can enhance its development efficiency.

Source: Cilium Directory Listing