WIP - Add --disable flag to render command

[ulyssessouza]

Adds a set/map with the services to be ignored by the render command.
All other usages of render.Render() just pass 'nil'.

Note that it's a WIP PR.
Maybe we could use a better name for the flag and use the concept of filtering for other concepts.

Closes #396

- What I did
Added the capability to remove services from the render by specifying them in the command line.

- How I did it
Added a new flag in the "render" command called "disable"

- How to verify it
Given an already existing application package that contains 3 services called "service1", "service2" and "service3" run:

docker-app render --disable service1 --disable service2

Only "service3" should be rendered

- Description for the changelog
Add a flag to the render command and pass the service names collected through the render.Render to be filtered afterwards

[mikesir87]

Awesome! And this would resolve #396. 😄

[codecov]

Codecov Report

Merging #418 into master will decrease coverage by 1.85%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #418      +/-   ##
==========================================
- Coverage    60.4%   58.55%   -1.86%     
==========================================
  Files          60       59       -1     
  Lines        3791     3378     -413     
==========================================
- Hits         2290     1978     -312     
+ Misses       1242     1140     -102     
- Partials      259      260       +1

Impacted Files	Coverage Δ
pkg/yatee/yatee.go	68.5% <0%> (-11.13%)	⬇️
render/render.go	73.25% <0%> (-8.13%)	⬇️
internal/helm/helm.go	52.8% <0%> (-3.22%)	⬇️
types/types.go	88.59% <0%> (-2.11%)	⬇️
types/settings/merge.go	100% <0%> (ø)	⬆️
cmd/docker-app/renderfile.go
cmd/docker-app/render.go	76.66% <0%> (+1.66%)	⬆️
cmd/docker-app/root.go	77.35% <0%> (+2.78%)	⬆️
cmd/docker-app/deploy.go	32.6% <0%> (+11.6%)	⬆️
types/settings/settings.go	96.82% <0%> (+15.43%)	⬆️

---

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[mikesir87]

Any word on this one? If this gets merged, it’ll tweak and simplify some of my DockerCon talk (for the better).

[silvin-lubecki]

I think you can add a WithDisabledService function, like WithName and add disabledServices to the app type, so you can remove it from the Render signature.

[ulyssessouza]

Just added a test and refactored by adding a WithDisabledService as suggested by @silvin-lubecki

[mikesir87]

Sorry to keep poking, but wondering if this might be merged/released before DockerCon (I know there are probably a ton of other prep stuff you're all working on). We have a tool that builds on top of Docker App (mikesir87/devdock-node) that is using the old x-enabled method to disable services. Would be much simpler to use this approach, so would prefer to show off this method. But, would need time to update the tool and slides.

[chris-crone]

@mikesir87 Unfortunately we don't want to add any new features just before DockerCon so this is on hold. Looking forward to meeting you there in person!

[mikesir87]

@chris-crone Ok! I'll go ahead and plan my slides using what currently exists, but then hint that a better way is in the works. Looking forward to seeing you there too! 🎉

[mikesir87]

Been a while since I've checked in here... any chance this might make it or will this feature just get dropped?

[silvin-lubecki]

Hello @mikesir87 , thanks for pinging us on this PR 👍 .
We are actively investigating this use case, along with the one blocking parametrization on image name. We need more time as we are looking for a generic solution and I don't think this PR will fit with it. That's why I think it makes more sense to close this PR for now.

[mikesir87]

Makes sense. Thanks @silvin-lubecki 👍