mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-12 14:30:12 +01:00
117 lines
2.9 KiB
Go
117 lines
2.9 KiB
Go
// Copyright © 2020 The OpenEBS Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package snapbuilder
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import (
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apis "github.com/openebs/zfs-localpv/pkg/apis/openebs.io/zfs/v1"
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)
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// ZFSSnapshot is a wrapper over
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// ZFSSnapshot API instance
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type ZFSSnapshot struct {
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// ZFSSnap object
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Object *apis.ZFSSnapshot
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}
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// From returns a new instance of
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// zfssnap volume
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func From(snap *apis.ZFSSnapshot) *ZFSSnapshot {
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return &ZFSSnapshot{
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Object: snap,
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}
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}
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// Predicate defines an abstraction
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// to determine conditional checks
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// against the provided pod instance
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type Predicate func(*ZFSSnapshot) bool
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// PredicateList holds a list of predicate
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type predicateList []Predicate
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// ZFSSnapshotList holds the list
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// of zfs snapshot instances
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type ZFSSnapshotList struct {
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// List contains list of snapshots
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List apis.ZFSSnapshotList
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}
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// Len returns the number of items present
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// in the ZFSSnapshotList
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func (snapList *ZFSSnapshotList) Len() int {
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return len(snapList.List.Items)
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}
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// all returns true if all the predicates
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// succeed against the provided ZFSSnapshot
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// instance
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func (l predicateList) all(snap *ZFSSnapshot) bool {
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for _, pred := range l {
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if !pred(snap) {
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return false
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}
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}
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return true
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}
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// HasLabels returns true if provided labels
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// are present in the provided ZFSSnapshot instance
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func HasLabels(keyValuePair map[string]string) Predicate {
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return func(snap *ZFSSnapshot) bool {
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for key, value := range keyValuePair {
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if !snap.HasLabel(key, value) {
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return false
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}
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}
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return true
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}
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}
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// HasLabel returns true if provided label
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// is present in the provided ZFSSnapshot instance
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func (snap *ZFSSnapshot) HasLabel(key, value string) bool {
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val, ok := snap.Object.GetLabels()[key]
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if ok {
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return val == value
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}
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return false
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}
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// HasLabel returns true if provided label
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// is present in the provided ZFSSnapshot instance
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func HasLabel(key, value string) Predicate {
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return func(snap *ZFSSnapshot) bool {
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return snap.HasLabel(key, value)
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}
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}
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// IsNil returns true if the zfssnap volume instance
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// is nil
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func (snap *ZFSSnapshot) IsNil() bool {
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return snap.Object == nil
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}
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// IsNil is predicate to filter out nil zfssnap volume
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// instances
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func IsNil() Predicate {
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return func(snap *ZFSSnapshot) bool {
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return snap.IsNil()
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}
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}
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// GetAPIObject returns zfssnap volume's API instance
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func (snap *ZFSSnapshot) GetAPIObject() *apis.ZFSSnapshot {
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return snap.Object
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}
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