oc create should support creating buildconfigs

[soltysh]

Our oc create supports several resources, but no buildConfigs, as of yet. The only CLI for creating BC is oc new-app or oc new-build which aside from the BC creates a few additional resources.

[bparees]

this is going to require a huge number of flags to be useful (even worse than new-build/new-app today).... can you give me a use case for why new-build/new-app are not the right answer?

[soltysh]

Simplicity of usage, I want to create BC and only that, without any other accompanying resources. I don't want to create BC by hand because I don't remember the yaml structure and I'm lazy to do it everytime I want to create a BC. With reasonable flags I should be able to create a sketch of a BC with oc create buildconfig and pick from there to do more when I need.

[bparees]

With reasonable flags I should be able to create a sketch of a BC with oc create buildconfig and pick from there to do more when I need.

i disagree that this is possible with anything less than a half dozen flags.

for a minimal buildconfig you need:

1. a source repo
2. a builder image
   a) is it an imagestream or a dockerimage reference?
3. a destination for the output
   a) is it an imagestream or a dockerimage reference?
4. a build strategy

i'll create the card, but i'm worried we're just creating another version of new-app where every person who goes to use it is going to come back and say "can you add a flag so i can specify X on my buildconfig? i don't want to edit it afterwards".

[bparees]

trello'd https://trello.com/c/vqI6QomG

[soltysh]

From what you've pointed out is just 4 flags where source repo is the required param. By definition oc create should be simple, that's the whole point, if you need more use oc new-app/new-build :)

[bparees]

From what you've pointed out is just 4 flags where source repo is the required param.

they're all required parameters. just the source repo is not sufficient for us to do anything.

And it's 6 flags because for flag (2) and (3) we either need:

--from-image-stream/--from-docker-image
--to-image-stream/--to-docker-image

or --from-image --as-imagestream/--as-dockerimage

or some other disambiguation as to whether the user is pointing us to a docker image, or an imagestream, for both the --to and --from fields. Otherwise you get into the searching/matching/guessing madness that new-app currently does.

Unless you're proposing that when creating a buildconfig you can only reference imagestreams (or only reference dockerimages).

[soltysh]

Only docker images, if you care about IS you'd use oc new-app.

[bparees]

Only docker images, if you care about IS you'd use oc new-app.

that seems silly. I don't want to introduce a command that creates buildconfigs that follow a structure we'd never recommend. imagestreams are the right tool for the job. Buildconfigs that don't use imagestreams are painful:

1. you can't imagechangetrigger them
2. you almost certainly need to add docker credential secrets because you're not going to be able to push the output anywhere

[bparees]

The most likely combination is:

from a docker image
to an imagestream