mirror of
https://github.com/arangodb/kube-arangodb.git
synced 2024-12-14 11:57:37 +00:00
93 lines
1.9 KiB
Go
93 lines
1.9 KiB
Go
//
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// DISCLAIMER
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//
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// Copyright 2023 ArangoDB GmbH, Cologne, Germany
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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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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package agency
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import (
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"context"
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"sync"
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"time"
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agencyCache "github.com/arangodb/kube-arangodb/pkg/deployment/agency/cache"
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)
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func RefreshLoader[T interface{}](loader agencyCache.StateLoader[T], delay time.Duration) agencyCache.StateLoader[T] {
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if delay <= 0 {
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return loader
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}
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return &refresherLoader[T]{
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parent: loader,
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delay: delay,
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}
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}
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type refresherLoader[T interface{}] struct {
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lock sync.Mutex
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last time.Time
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delay time.Duration
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parent agencyCache.StateLoader[T]
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}
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func (i *refresherLoader[T]) UpdateTime() time.Time {
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i.lock.Lock()
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defer i.lock.Unlock()
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return i.parent.UpdateTime()
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}
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func (i *refresherLoader[T]) Valid() bool {
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i.lock.Lock()
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defer i.lock.Unlock()
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return i.parent.Valid()
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}
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func (i *refresherLoader[T]) State() (*T, uint64, bool) {
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i.lock.Lock()
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defer i.lock.Unlock()
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return i.parent.State()
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}
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func (i *refresherLoader[T]) Invalidate() {
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i.lock.Lock()
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defer i.lock.Unlock()
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i.parent.Invalidate()
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}
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func (i *refresherLoader[T]) Refresh(ctx context.Context, discovery agencyCache.LeaderDiscovery) error {
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i.lock.Lock()
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defer i.lock.Unlock()
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if i.last.IsZero() || time.Since(i.last) > i.delay {
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i.last = time.Now()
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i.parent.Invalidate()
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}
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if err := i.parent.Refresh(ctx, discovery); err != nil {
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return err
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}
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return nil
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}
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