package main import ( "fmt" "k8s.io/kubernetes/pkg/labels" ) func main() { selector := labels.Set{"app": "myapp", "env": "production"} if selector.Matches(labels.Set{"app": "myapp", "env": "production", "version": "v1"}) { fmt.Println("The resource matches the selector!") } else { fmt.Println("The resource does not match the selector.") } }
package main import ( "fmt" "k8s.io/kubernetes/pkg/labels" ) func main() { selector1 := labels.Set{"app": "myapp", "env": "production"} selector2 := labels.Set{"version": "v1"} resourceLabels := labels.Set{"app": "myapp", "env": "development", "version": "v1"} if labels.RequiresSelector(resourceLabels, labels.SelectorFromSet(selector1, selector2)) { fmt.Println("The resource meets the selector requirements!") } else { fmt.Println("The resource does not meet the selector requirements.") } }In this example, we create two label selectors: one that matches resources with the labels `app=myapp` and `env=production`, and another that matches resources with the label `version=v1`. We then create a set of labels for a resource that has the labels `app=myapp`, `env=development`, and `version=v1`. We test if this resource meets the requirements of the label selectors by using the `RequiresSelector` function. The output of the program would be "The resource does not meet the selector requirements.", since the resource's labels do not match the criteria of the first selector (which requires `env=production`). Overall, the go k8s.io/kubernetes/pkg/labels Selector package library is a powerful tool for selecting and filtering Kubernetes resources based on their label metadata.