From PolyRepo to MonoRepo architecture using Github CI/CD

Managing MonoRepo having its own positives and negatives. But most of the products are moving towards MonoRepo architecture.

I am having some example to maintain a MonoRepo from MultiRepo architecture.

For this experiment we can have two individual repositories (repo1, repo2). The objective is to push these two codes to mono_repo when commit new changes.

muthugit/repo1

muthugit/repo2

muthugit/mono_repo

Private Access Token

Create Private Access Token (PAT) in your github https://github.com/settings/tokens to give the access to commit the code programmatically. And select all repo access and give the name as PAT_TOKEN

Add workflow.yaml on both repo1 and repo2

on: push
jobs:
    replicate-file:
        runs-on: ubuntu-latest
        name: Replicate File
steps:
        - name: Checkout current repo
          uses: actions/checkout@v2
          with:
            path: ./repo
- name: Checkout MonoRepo
          uses: actions/checkout@master
          with: 
            repository: muthugit/mono_repo
            token: ${{ secrets.PAT_TOKEN }}
            path: ./mono_repo
- name: Copy/Create file
          run: |
            cp ./repo/README.md ./mono_repo/repo1.md
        - name: Push to mono_repo
          run: |
            cd ./mono_repo
            git add .
            git config user.name github-actions
            git config user.email github-actions@github.com
            git commit -am "File Replicated from Project A"
            git push

Copy the same YAML in repo2

When you commit code on either repo1 or repo2 the latest code will be available on the mono_repo

Conclusion

This way we can manage MonoRepo for a project where multiple dependencies are there