volumes

type ActualVolume struct {
	Desired *DesiredVolume
	PVC     *corev1.PersistentVolumeClaim
	Phase   VolumePhase
	// it may be nil if there is no permission to get pvc
	PV *corev1.PersistentVolume
	// it may be nil if there is no permission to get storage class
	StorageClass *storagev1.StorageClass
}

type DesiredVolume struct {
	Name v1alpha1.StorageVolumeName
	Size resource.Quantity
	// it may be nil if there is no permission to get storage class
	StorageClass *storagev1.StorageClass
	// it is sc name specified by user
	// the sc may not exist
	StorageClassName *string
}

type FakePodVolumeModifier struct {
	ModifyFunc            func(actual []ActualVolume) error
	ShouldModifyFunc      func(actual []ActualVolume) bool
	GetDesiredVolumesFunc func(tc *v1alpha1.TidbCluster, mt v1alpha1.MemberType) ([]DesiredVolume, error)
	GetActualVolumesFunc  func(pod *corev1.Pod, vs []DesiredVolume) ([]ActualVolume, error)
}

type PVCModifierInterface interface {
	Sync(tc *v1alpha1.TidbCluster) error
}

type PodVolumeModifier interface {
	GetDesiredVolumes(tc *v1alpha1.TidbCluster, mt v1alpha1.MemberType) ([]DesiredVolume, error)
	GetActualVolumes(pod *corev1.Pod, vs []DesiredVolume) ([]ActualVolume, error)

	ShouldModify(actual []ActualVolume) bool
	Modify(actual []ActualVolume) error
}

type VolumePhase int