mirror of https://github.com/docker/cli.git
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
package kubernetes
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import (
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apiv1alpha3 "github.com/docker/compose-on-kubernetes/api/compose/v1alpha3"
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apiv1beta1 "github.com/docker/compose-on-kubernetes/api/compose/v1beta1"
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apiv1beta2 "github.com/docker/compose-on-kubernetes/api/compose/v1beta2"
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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/discovery"
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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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// StackAPIV1Beta2 is returned if it's the most recent version available.
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StackAPIV1Beta2 = StackVersion("v1beta2")
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// StackAPIV1Alpha3 is returned if it's the most recent version available, and experimental flag is on.
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StackAPIV1Alpha3 = StackVersion("v1alpha3")
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)
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// GetStackAPIVersion returns the most appropriate stack API version installed.
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func GetStackAPIVersion(serverGroups discovery.ServerGroupsInterface) (StackVersion, error) {
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groups, err := serverGroups.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(apiv1alpha3.SchemeGroupVersion, groups.Groups):
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return StackAPIV1Alpha3, nil
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case findVersion(apiv1beta2.SchemeGroupVersion, groups.Groups):
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return StackAPIV1Beta2, nil
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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.New("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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