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persistentvolumeclaim.go
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/
persistentvolumeclaim.go
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// Copyright © 2018-2019 The OpenEBS Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v1alpha1
import (
"strings"
corev1 "k8s.io/api/core/v1"
)
// PVC is a wrapper over persistentvolumeclaim api
// object. It provides build, validations and other common
// logic to be used by various feature specific callers.
type PVC struct {
object *corev1.PersistentVolumeClaim
}
// PVCList is a wrapper over persistentvolumeclaim api
// object. It provides build, validations and other common
// logic to be used by various feature specific callers.
type PVCList struct {
items []*PVC
}
// Len returns the number of items present
// in the PVCList
func (p *PVCList) Len() int {
return len(p.items)
}
// ToAPIList converts PVCList to API PVCList
func (p *PVCList) ToAPIList() *corev1.PersistentVolumeClaimList {
plist := &corev1.PersistentVolumeClaimList{}
for _, pvc := range p.items {
plist.Items = append(plist.Items, *pvc.object)
}
return plist
}
type pvcBuildOption func(*PVC)
// NewForAPIObject returns a new instance of PVC
func NewForAPIObject(obj *corev1.PersistentVolumeClaim, opts ...pvcBuildOption) *PVC {
p := &PVC{object: obj}
for _, o := range opts {
o(p)
}
return p
}
// Predicate defines an abstraction
// to determine conditional checks
// against the provided pvc instance
type Predicate func(*PVC) bool
// IsBound returns true if the pvc is bounded
func (p *PVC) IsBound() bool {
return p.object.Status.Phase == corev1.ClaimBound
}
// IsBound is a predicate to filter out pvcs
// which is bounded
func IsBound() Predicate {
return func(p *PVC) bool {
return p.IsBound()
}
}
// IsNil returns true if the PVC instance
// is nil
func (p *PVC) IsNil() bool {
return p.object == nil
}
// IsNil is predicate to filter out nil PVC
// instances
func IsNil() Predicate {
return func(p *PVC) bool {
return p.IsNil()
}
}
// ContainsName is filter function to filter pvc's
// based on the name
func ContainsName(name string) Predicate {
return func(p *PVC) bool {
return strings.Contains(p.object.GetName(), name)
}
}
// PredicateList holds a list of predicate
type PredicateList []Predicate
// all returns true if all the predicates
// succeed against the provided pvc
// instance
func (l PredicateList) all(p *PVC) bool {
for _, pred := range l {
if !pred(p) {
return false
}
}
return true
}