feat(zfs-localpv): vendor packages for zfs-localpv

Signed-off-by: Pawan <pawan@mayadata.io>

vendor/k8s.io/client-go/tools/cache/expiration_cache_fakes.go

@@ -0,0 +1,54 @@
+/*
+Copyright 2014 The Kubernetes 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 cache
+
+import (
+	"k8s.io/apimachinery/pkg/util/clock"
+	"k8s.io/apimachinery/pkg/util/sets"
+)
+
+type fakeThreadSafeMap struct {
+	ThreadSafeStore
+	deletedKeys chan<- string
+}
+
+func (c *fakeThreadSafeMap) Delete(key string) {
+	if c.deletedKeys != nil {
+		c.ThreadSafeStore.Delete(key)
+		c.deletedKeys <- key
+	}
+}
+
+type FakeExpirationPolicy struct {
+	NeverExpire     sets.String
+	RetrieveKeyFunc KeyFunc
+}
+
+func (p *FakeExpirationPolicy) IsExpired(obj *timestampedEntry) bool {
+	key, _ := p.RetrieveKeyFunc(obj)
+	return !p.NeverExpire.Has(key)
+}
+
+func NewFakeExpirationStore(keyFunc KeyFunc, deletedKeys chan<- string, expirationPolicy ExpirationPolicy, cacheClock clock.Clock) Store {
+	cacheStorage := NewThreadSafeStore(Indexers{}, Indices{})
+	return &ExpirationCache{
+		cacheStorage:     &fakeThreadSafeMap{cacheStorage, deletedKeys},
+		keyFunc:          keyFunc,
+		clock:            cacheClock,
+		expirationPolicy: expirationPolicy,
+	}
+}