sequence-diagram.txt

title Promotion Workflow - Developer Experience

loop Commit changes till ready for next deploy
    Dev->+GitHub: Commit Code on a work branch and create PR
    GitHub-->-Dev: Approval
    Dev->GitHub: Merge branch to Master
end

Dev->+GitHub: Create a Release based on master
GitHub->GitHub: Trigger 'release' webhook
GitHub->-CI: Build an imaged tagged on release number
CI->GitHub: Attach Image to release (optional)

Dev->+GitHub: Update app HLD config to point to new \nimage tag and create PR to master
GitHub-->-Dev: Approval
Dev->GitHub: Merge to Master

loop repeat for all env until reaching prod
    Dev->+GitHub: PR to merge current promotion env to next env\n(ie. master->dev, dev->stage, stage->prod)
    GitHub->+CI: Ensure PR base & target are a whitelisted combination\n(ie. dev->stage, stage->prod)
    CI-->-GitHub: Approval
    GitHub-->-Dev: Approval
    
    Dev->GitHub: Merge to next env
    GitHub->+CI: Trigger `fab install && fab generate` \non all top level HLD using the app
    CI->-GitHub: Push updated K8s manifests to the\npromoted branch of the manifests repo
end