Add a ingresses-only flag

[LiorLieberman]

What would you like to be added:
Add a ingresses-only flag to scope the tool to only convert resources without looking for providers CRDs

Why this is needed:
Provider specific support is in early stage support now with only few providers support the conversion. Users might want to scope the tool invocation to only read and convert their ingresses

/good-first-issue
/help-wanted

[k8s-ci-robot]

@LiorLieberman: The label(s) /label good-first-issue cannot be applied. These labels are supported: api-review, tide/merge-method-merge, tide/merge-method-rebase, tide/merge-method-squash, team/katacoda, refactor. Is this label configured under labels -> additional_labels or labels -> restricted_labels in plugin.yaml?

In response to this:

What would you like to be added:
Add a ingresses-only flag to scope the tool to only convert resources without looking for providers CRDs

Why this is needed:
Provider specific support is in early stage support now with only few providers support the conversion. Users might want to scope the tool invocation to only read and convert their ingresses

/label good-first-issue
/help-wanted

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[camperjett]

Hi! Can I take up this issue? I'll be glad to help

[levikobi]

Hi @camperjett! Sure, thanks!
Let us know if you have any questions or if you need any help

/assign @camperjett

[camperjett]

Hi! I have made the required changes to cmd/print.go file. How do I test it?

[levikobi]

@camperjett, the first thing you'll want to do is make sure existing unit tests are passing. After that, you can build the binary and use the tool with the new flag you added.
You should use ingress manifest files that contain ingress-nginx-related headers (such as canary headers). See if those headers are translated without specifying your flag and if they are not translated when using it.

I think this can be a good place to start with

[camperjett]

How do I use the tool? I am totally new to CNCF eco-system

[levikobi]

You can use the make build target to build it.
Then, I recommend you start playing around with it. Take a look at https://github.com/kubernetes-sigs/ingress2gateway#usage for some details.

[prakrit55]

@camperjett are you still working on it, I would like to give it a try 🙂

[mlavacca]

Since we have multiple providers on board now, I'm not sure this is still something we may want to implement. What do you think, @LiorLieberman?