project plugin for meta
Usage: meta project [<options>] <command>
Commands:
create create and initialize a new child repository
import import an existing child repository via git clone
migrate migrate from a monorepo to a metarepo
help <cmd> display help for <cmd>
Options:
-h, --help output usage information
To create a new project, use meta project create <folder> <repo url>
meta project create new-dir [email protected]/org/repo
To import an existing project, use meta project import <folder> [<repo url>]
meta project import projects/example [email protected]/your-org/example
To import existing project which is already checked out at <folder>, <repo-url> can be omitted
meta project import projects/example
'meta project migrate' helps you move from a monorepo to a meta repo by moving directories from your existing repo into separate child repos, with git history intact. These are then referenced in your '.meta' file and cloned, making the operation transparent to your codebase.
For example, given the following monorepo structure:
- monorepo-base
- project-a
- project-b
- project-c
Create git repos for project-a, project-b, and project-c, then run:
cd monorepo-base
meta init
meta project migrate project-a [email protected]/yourorg/project-a
meta project migrate project-b [email protected]/yourorg/project-b
meta project migrate project-c [email protected]/yourorg/project-c
This will keep the git history of each subproject in tact, using some git magic:
- Explanation: https://help.github.com/en/articles/splitting-a-subfolder-out-into-a-new-repository
- Implementation: https://github.com/mateodelnorte/meta-project/blob/master/lib/splitSubtree.js
A) Migrate will first create a copy of your project in a temporary directory and replace the remote 'origin' with the provided
B) It will split the history from and push to the provided : https://help.github.com/en/articles/splitting-a-subfolder-out-into-a-new-repository
C) Next is removed from your monorepo, and then cloned back into the same location.
In the eyes of the monorepo, the only thing that has changed is the .meta file, however, now also has it's own distinct history.
If you need the monorepos structure to stay in tact for any extended duration, such as supporting legacy CI systems, you can stop here.
While in this 'migration' phase, you need to commit to the child directory's git history as well as the monorepo's git history. These commits can literally be made twice by cd-ing around or both can be made at once using 'meta git commit'.
When the monorepo no longer needs to be maintained you can simply add the migrated project to your '.gitignore'.
This will cause changes to only be tracked in the child repo, rather than both, such as during the migration phase.