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Add a shouldDelete method in the provisioner Qualifer interface #3

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Nov 5, 2018
Merged

Add a shouldDelete method in the provisioner Qualifer interface #3

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6 changes: 6 additions & 0 deletions controller/controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -848,6 +848,12 @@ func (ctrl *ProvisionController) shouldProvision(claim *v1.PersistentVolumeClaim
// shouldDelete returns whether a volume should have its backing volume
// deleted, i.e. whether a Delete is "desired"
func (ctrl *ProvisionController) shouldDelete(volume *v1.PersistentVolume) bool {
if deletionGuard, ok := ctrl.provisioner.(DeletionGuard); ok {
if !deletionGuard.ShouldDelete(volume) {
return false
}
}

// In 1.9+ PV protection means the object will exist briefly with a
// deletion timestamp even after our successful Delete. Ignore it.
if ctrl.kubeVersion.AtLeast(utilversion.MustParseSemantic("v1.9.0")) {
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7 changes: 7 additions & 0 deletions controller/volume.go
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Expand Up @@ -47,6 +47,13 @@ type Qualifier interface {
ShouldProvision(*v1.PersistentVolumeClaim) bool
}

// DeletionGuard is an optional interface implemented by provisioners to determine
// whether a PV should be deleted.
type DeletionGuard interface {
// ShouldDelete returns whether deleting the PV should be attempted.
ShouldDelete(volume *v1.PersistentVolume) bool
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}

// BlockProvisioner is an optional interface implemented by provisioners to determine
// whether it supports block volume.
type BlockProvisioner interface {
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