mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-11 22:10:11 +01:00
102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
/*
|
|
Copyright 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 sc
|
|
|
|
import (
|
|
"github.com/openebs/zfs-localpv/pkg/common/errors"
|
|
storagev1 "k8s.io/api/storage/v1"
|
|
)
|
|
|
|
// ListBuilder enables building an instance of StorageClassList
|
|
type ListBuilder struct {
|
|
list *StorageClassList
|
|
filters predicateList
|
|
errs []error
|
|
}
|
|
|
|
// NewListBuilder returns a instance of ListBuilder
|
|
func NewListBuilder() *ListBuilder {
|
|
return &ListBuilder{list: &StorageClassList{items: []*StorageClass{}}}
|
|
}
|
|
|
|
// ListBuilderForAPIList builds the ListBuilder object based on SC API list
|
|
func ListBuilderForAPIList(scl *storagev1.StorageClassList) *ListBuilder {
|
|
b := &ListBuilder{list: &StorageClassList{}}
|
|
if scl == nil {
|
|
b.errs = append(b.errs, errors.New("failed to build storageclass list: missing api list"))
|
|
return b
|
|
}
|
|
for _, sc := range scl.Items {
|
|
sc := sc
|
|
b.list.items = append(b.list.items, &StorageClass{object: &sc})
|
|
}
|
|
return b
|
|
}
|
|
|
|
// ListBuilderForObjects returns a instance of ListBuilder from SC instances
|
|
func ListBuilderForObjects(scl *StorageClassList) *ListBuilder {
|
|
b := &ListBuilder{list: &StorageClassList{}}
|
|
if scl == nil {
|
|
b.errs = append(b.errs, errors.New("failed to build storageclass list: missing object list"))
|
|
return b
|
|
}
|
|
b.list = scl
|
|
return b
|
|
}
|
|
|
|
// List returns the list of StorageClass instances that was built by this builder
|
|
func (b *ListBuilder) List() (*StorageClassList, error) {
|
|
if len(b.errs) > 0 {
|
|
return nil, errors.Errorf("failed to list storageclass: %+v", b.errs)
|
|
}
|
|
if b.filters == nil || len(b.filters) == 0 {
|
|
return b.list, nil
|
|
}
|
|
filtered := &StorageClassList{}
|
|
for _, sc := range b.list.items {
|
|
if b.filters.all(sc) {
|
|
sc := sc // Pin it
|
|
filtered.items = append(filtered.items, sc)
|
|
}
|
|
}
|
|
return filtered, nil
|
|
}
|
|
|
|
// WithFilter add filters on which the StorageClass has to be filtered
|
|
func (b *ListBuilder) WithFilter(pred ...Predicate) *ListBuilder {
|
|
b.filters = append(b.filters, pred...)
|
|
return b
|
|
}
|
|
|
|
// APIList builds core API PVC list using listbuilder
|
|
func (b *ListBuilder) APIList() (*storagev1.StorageClassList, error) {
|
|
l, err := b.List()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return l.ToAPIList(), nil
|
|
}
|
|
|
|
// Len returns the number of items present
|
|
// in the List of a builder
|
|
func (b *ListBuilder) Len() (int, error) {
|
|
l, err := b.List()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return l.Len(), nil
|
|
}
|