feat: print all resources #78

mlavacca · 2023-10-19T16:12:03Z

What type of PR is this?

/kind feature

What this PR does / why we need it:

When reading the resources from a file, it is now possible to display all the resources, not only the Gateway API ones. Besides, the PROVIDER.md file has been properly formatted.

Which issue(s) this PR fixes:

Fixes #73

Does this PR introduce a user-facing change?:

By setting the flag `--all-resources`, it is now possible to print all the resources, not only the Gateway API ones. This flag is available only when reading the resources from a file.

k8s-ci-robot · 2023-10-19T16:12:05Z

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levikobi

Thank you @mlavacca!
I have some questions regarding a few things but overall it's seems like another great contribution to me.

PROVIDER.md

cmd/print.go

pkg/i2gw/provider.go

cmd/print.go

LiorLieberman · 2024-05-07T07:44:59Z

pkg/i2gw/providers/apisix/resource_reader.go

@@ -39,7 +38,7 @@ func (r *resourceReader) readResourcesFromCluster(ctx context.Context) (*storage
 	// read apisix related resources from cluster.
 	storage := newResourcesStorage()

-	ingresses, err := common.ReadIngressesFromCluster(ctx, r.conf.Client, ApisixIngressClass)
+	ingresses, err := i2gw.ReadIngressesFromCluster(ctx, r.conf.Client, ApisixIngressClass)


I needed to move the resource-reader files to the i2gw package to avoid the import cycle as with this change we read resources not only from the provider packages but from i2gw as well, as we want to read resources that do not have to be converted.

LiorLieberman · 2024-05-09T11:45:28Z

pkg/i2gw/ingress2gateway.go

+		if _, ok := FilteredResources[o.GetObjectKind().GroupVersionKind().GroupKind()]; ok {
+			continue


Trying to think if there is a different way to do it. I less like the fact that every provider needs to register its resources and that we depends on it.. I have not thought on anything smart yet.
But.. we should have all the resources the provider cares about (which are the resources that we need to filter out from the file) in its storage.. Maybe we can leverage that?

I guess we can add a GetCRDs() method to the provider interface. We have access to all the providers in i2gw package, so we can do the registration in this package. Instead of having each one registering his own CRDs

I followed @levikobi's suggestion and added a GetCRDs method to the provider interface. Let me know if it looks better now. In that case, I'll add documentation about the new method for the providers to implement.

cmd/print.go

levikobi · 2024-05-10T07:09:37Z

pkg/i2gw/ingress2gateway.go

+		if _, ok := FilteredResources[o.GetObjectKind().GroupVersionKind().GroupKind()]; ok {
+			continue


I guess we can add a GetCRDs() method to the provider interface. We have access to all the providers in i2gw package, so we can do the registration in this package. Instead of having each one registering his own CRDs

levikobi

@mlavacca you moved some logic from common to i2gw, can you please explain why?

mlavacca · 2024-06-05T08:32:33Z

@mlavacca you moved some logic from common to i2gw, can you please explain why?

I needed to move the resource-reader files to the i2gw package to avoid the import cycle as with this change we read resources not only from the provider packages but from i2gw as well, as we want to read resources that do not have to be converted.

Signed-off-by: Mattia Lavacca <[email protected]>

k8s-ci-robot · 2024-06-13T21:12:03Z

PR needs rebase.

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LiorLieberman

Thanks @mlavacca, left some comments.
the move of logic from common to i2gw a bit bothers me because the function moved are actually common functions. Maybe we can come up with different package structure that will still accommodate the changes you introduced?

LiorLieberman · 2024-06-15T18:45:31Z

pkg/i2gw/ingress2gateway.go

@@ -30,7 +32,7 @@ import (
 	gatewayv1beta1 "sigs.k8s.io/gateway-api/apis/v1beta1"
 )

-func ToGatewayAPIResources(ctx context.Context, namespace string, inputFile string, providers []string, providerSpecificFlags map[string]map[string]string) ([]GatewayResources, error) {
+func GetResources(ctx context.Context, namespace string, inputFile string, allresources bool, providers []string, providerSpecificFlags map[string]map[string]string) ([]client.Object, error) {


Can we leave some version of the old name (ToGatewayAPIResources) and return []client.Object, []client.Object, error ? GetResources does not really reflect what the function is doing

or []GatewayResources, []client.Object, error

LiorLieberman · 2024-06-15T18:47:50Z

pkg/i2gw/ingress2gateway.go

+	return append(gatewayResourcesToObjects(gatewayResources), genericResources...), nil
+}
+
+func gatewayResourcesToObjects(gatewayResources []GatewayResources) []client.Object {


Can we add a small function comment, also mention the order it returns the resources

LiorLieberman · 2024-06-15T18:50:29Z

pkg/i2gw/ingress2gateway.go

+	for _, p := range providerByName {
+		for _, crd := range p.GetCRDs() {
+			FilteredResources[crd] = struct{}{}
+		}
+	}


haven't thought much about it, but what are your thoughts on this approach VS every provider registers the resources he cares about in init().

I am not sure what I prefer, slight preference to what you currently have but wanted to discuss this

LiorLieberman · 2024-06-15T18:53:28Z

pkg/i2gw/providers/apisix/apisix.go

+func (p *Provider) GetCRDs() []schema.GroupKind {
+	return nil
+}


similar comment below on how we handle, provider == kong but ingress is gce. The implemented approach here would not print the gce ingress (although it hasn't been converted)

LiorLieberman · 2024-06-15T18:57:24Z

pkg/i2gw/resources.go

+		ingressClassGK: {},
+		ingressGK:      {},
+	}


re mentioning the comment about not differentiating between ingress of different providers when running with --all-resources

LiorLieberman · 2024-06-15T18:58:12Z

pkg/i2gw/utils.go

+	networkingv1beta1 "k8s.io/api/networking/v1beta1"
+)
+
+func GetIngressClass(ingress networkingv1.Ingress) string {


we already have similar function in common, why not using it?

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mlavacca mentioned this pull request Jun 13, 2024

Support Gateway API extensions (output providers) #125

Open

mlavacca added 2 commits June 13, 2024 10:15

feat: --all-resources enables all resources fetch

f0b9fc2

address review comments

25cff88

Signed-off-by: Mattia Lavacca <[email protected]>

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feat: print all resources #78

feat: print all resources #78

mlavacca commented Oct 19, 2023 •

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		if _, ok := FilteredResources[o.GetObjectKind().GroupVersionKind().GroupKind()]; ok {
		continue

feat: print all resources #78

feat: print all resources #78

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