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terminate_cluster.go
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/
terminate_cluster.go
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package handlers
import (
"github.com/go-openapi/runtime/middleware"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/sapcc/kubernikus/pkg/api"
"github.com/sapcc/kubernikus/pkg/api/models"
"github.com/sapcc/kubernikus/pkg/api/rest/operations"
"github.com/sapcc/kubernikus/pkg/apis/kubernikus/v1"
)
func NewTerminateCluster(rt *api.Runtime) operations.TerminateClusterHandler {
return &terminateCluster{rt}
}
type terminateCluster struct {
*api.Runtime
}
func (d *terminateCluster) Handle(params operations.TerminateClusterParams, principal *models.Principal) middleware.Responder {
kluster := d.Kubernikus.Kubernikus().Klusters(d.Namespace)
k, err := kluster.Get(qualifiedName(params.Name, principal.Account), metav1.GetOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
return NewErrorResponse(&operations.TerminateClusterDefault{}, 404, "Not found")
}
return NewErrorResponse(&operations.TerminateClusterDefault{}, 500, err.Error())
}
if k.Status.NodePools != nil && len(k.Status.NodePools) > 0 {
for _, nodepoolinfo := range k.Status.NodePools {
if nodepoolinfo.Running > 0 {
return NewErrorResponse(&operations.TerminateClusterDefault{}, 409, "Cluster still has Nodes in a Pool")
}
}
}
_, err = editCluster(kluster, principal, params.Name, func(kluster *v1.Kluster) {
kluster.Status.Phase = models.KlusterPhaseTerminating
kluster.Status.Message = "Cluster terminating"
})
if err != nil {
return NewErrorResponse(&operations.TerminateClusterDefault{}, 500, err.Error())
}
// This issues a delete request for the Kluster CRD
//
// It actually adds a `metadata.DeletionTimestamp` to the Kluster. The Garbage-
// Controller will pick up on that and delete the resource. But only when the
// metadata.Finalizers array is empty. Until then the Kluster will keep on
// existing.
//
// Kubernikus Controllers are required to add/remove Finalizers if clean-up is
// required once a Kluster is deleted.
if err := kluster.Delete(qualifiedName(params.Name, principal.Account), &metav1.DeleteOptions{}); err != nil {
return NewErrorResponse(&operations.TerminateClusterDefault{}, 500, err.Error())
}
return operations.NewTerminateClusterAccepted()
}