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197: commit objects to memory when fake K8s apply method is invoked #200

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Jun 5, 2024
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197: commit objects to memory when fake K8s apply method is invoked #200

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22 changes: 17 additions & 5 deletions pkg/k8s/fake/clientset.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import (

tektonv1beta1api "github.com/tektoncd/pipeline/pkg/apis/pipeline/v1beta1"
tektonv1beta1fakeclient "github.com/tektoncd/pipeline/pkg/client/clientset/versioned/typed/pipeline/v1beta1/fake"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/api/meta/testrestmapper"
"k8s.io/apimachinery/pkg/runtime"
Expand Down Expand Up @@ -39,9 +40,9 @@ func NewSchemeAndCodecs() (*runtime.Scheme, *serializer.CodecFactory, error) {

var _ k8s.ClientInterface = (*DraconClientSet)(nil)

// ApplyHookType is the signature of the function that will be called to mock
// an Apply invocation
type ApplyHookType func(clientset ClientsetSubset, obj runtime.Object, namespace string, forceConflicts bool) error
// ApplyHookType is the signature of the function that will be called to
// examine the parameters that the apply function was called with.
type ApplyHookType func(obj runtime.Object, namespace string, forceConflicts bool) error

// ClientsetSubset is just the fake clientset struct
type ClientsetSubset struct {
Expand All @@ -52,6 +53,7 @@ type ClientsetSubset struct {
// DraconClientSet is a mock implementation of the `k8s.Clientset`
type DraconClientSet struct {
ClientsetSubset
objectTracker testing.ObjectTracker
discovery *fakediscovery.FakeDiscovery
ApplyHook ApplyHookType
MetaRESTMapper meta.RESTMapper
Expand All @@ -62,7 +64,7 @@ type DraconClientSet struct {
// a correct response for all known types offered by the `k8s.ClientInterface`.
func NewFakeTypedClient(objects ...runtime.Object) (DraconClientSet, error) {
return NewFakeTypedClientWithApplyHook(
func(_ ClientsetSubset, _ runtime.Object, _ string, _ bool) error { return nil },
func(_ runtime.Object, _ string, _ bool) error { return nil },
objects...,
)
}
Expand Down Expand Up @@ -96,6 +98,7 @@ func NewFakeTypedClientWithApplyHook(applyHook ApplyHookType, objects ...runtime
})

return DraconClientSet{
objectTracker: objectTracker,
discovery: &fakediscovery.FakeDiscovery{
Fake: &fakeCoreK8sClient.Fake,
FakedServerVersion: &version.Info{
Expand All @@ -118,7 +121,16 @@ func NewFakeTypedClientWithApplyHook(applyHook ApplyHookType, objects ...runtime

// Apply mocks the `kubectl apply`
func (f DraconClientSet) Apply(_ context.Context, obj runtime.Object, namespace string, forceConflicts bool) error {
return f.ApplyHook(f.ClientsetSubset, obj, namespace, forceConflicts)
if err := f.ApplyHook(obj, namespace, forceConflicts); err != nil {
return err
}
gvk := obj.GetObjectKind().GroupVersionKind()
gvr, _ := meta.UnsafeGuessKindToResource(gvk)

if err := f.objectTracker.Create(gvr, obj, namespace); k8serrors.IsAlreadyExists(err) {
return f.objectTracker.Update(gvr, obj, namespace)
}
return nil
}

// RESTMapper returns an instance implementing the `meta.RESTMapper` interface
Expand Down
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