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51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
package kubernetes
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import (
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apiv1beta1 "github.com/docker/cli/kubernetes/compose/v1beta1"
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"github.com/pkg/errors"
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apimachinerymetav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/kubernetes"
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)
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// StackVersion represents the detected Compose Component on Kubernetes side.
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type StackVersion string
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const (
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// StackAPIV1Beta1 is returned if it's the most recent version available.
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StackAPIV1Beta1 = StackVersion("v1beta1")
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)
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// GetStackAPIVersion returns the most recent stack API installed.
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func GetStackAPIVersion(clientSet *kubernetes.Clientset) (StackVersion, error) {
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groups, err := clientSet.Discovery().ServerGroups()
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if err != nil {
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return "", err
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}
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return getAPIVersion(groups)
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}
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func getAPIVersion(groups *metav1.APIGroupList) (StackVersion, error) {
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switch {
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case findVersion(apiv1beta1.SchemeGroupVersion, groups.Groups):
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return StackAPIV1Beta1, nil
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default:
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return "", errors.Errorf("failed to find a Stack API version")
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}
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}
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func findVersion(stackAPI schema.GroupVersion, groups []apimachinerymetav1.APIGroup) bool {
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for _, group := range groups {
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if group.Name == stackAPI.Group {
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for _, version := range group.Versions {
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if version.Version == stackAPI.Version {
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return true
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}
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}
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}
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}
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return false
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}
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