I have the following code snippet.
type workloadInterface interface {
*appsV1.Deployment | *appsV1.StatefulSet
}
.
.
.
func (a *adapter) processDepOrSSForSvc(client kubernetes.Interface,
ns, svcName, workloadName, svcVersionType string) {
switch svcVersionType {
case serviceDeployment:
dep, err := client.AppsV1().Deployments(ns).Get(
context.Background(), workloadName, v1.GetOptions{})
if err != nil {
log.Errorf("Deployment fetch failed: %v", err)
return
}
processWorkload[*appsV1.Deployment](dep) // <----- generics
call
case serviceStatefulSet:
ss, err := client.AppsV1().StatefulSets(ns).Get(
context.Background(), workloadName, v1.GetOptions{})
if err != nil {
log.Errorf("Statefulset fetch failed: %v", err)
return
}
processWorkload[*appsV1.StatefulSet](ss) // <------ generics
call
.
.
.
func processWorkload[V workloadInterface](w V) { //
<----------generic function
log.Debugf("Namespace: %s Service: %s Deployment: %s",
ns, t.ServiceName, w.Name) <--------- Error here
What am I doing wrong ? I am trying to use generics where the object could
be either a `Deployment` or `StatefulSet`.
If I compile, I get an error like:
internal/telegraf-adapter/service-details.go:143:24: w.Name undefined
(type V has no field or method Name)
internal/telegraf-adapter/service-details.go:144:23: w.Name undefined
(type V has no field or method Name)
internal/telegraf-adapter/service-details.go:146:11: w.Annotations
undefined (type V has no field or method Annotations)
Name and Annotations are methods available in both the Deployment and the
StatefulSet structs.
Thanks.
--
Sankar P
http://psankar.blogspot.com
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