Start apps lazily.

[rwjblue]

If I have multiple ember-cli apps mounted at various routes (I am working on an app with 6), starting them all for each rails s can take quite a bit of time.

If each ember app takes 3-5 seconds to build, and I have 10 apps running it will take 30-50 seconds to boot rails server (we do a sync build AND an async watch for all apps on boot). This is regardless of hitting any of the ember routes (meaning, if I just want to hit a standard rails route I have to wait the total time).

Dissecting this a bit:

• Do not compile && run the EmberCLI app. Only one should be needed, it seems that a sync build is required to ensure content exists in dist/. I believe that the locking middleware in Add locking feature to prevent stale code #25 fixes this for us. Fixed in Add locking feature to prevent stale code #25.
• Only start apps when their routes are visited. Removes the need for SKIP_EMBER environment variable.

DISCLAIMER:

I could be missing something obvious that makes these points untrue.

[rwz]

I believe that the locking middleware in #25 fixes this for us.

Right.

Only start apps when their routes are visited. Removes the need for SKIP_EMBER environment variable.

Awesome idea and totally doable.

[rondale-sc]

The beginnings: https://github.com/rwz/ember-cli-rails/compare/wip-lazy-compile

[rwz]

Alright, that didn't work out as expected. Closing this issue for now. Will reopen/recreate if a better way to achieve the same effect is found.

[rondale-sc]

@rwz Understatement. lol. Good learning experience though.