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https://github.com/kubernetes-sigs/external-dns.git
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51 lines
1.6 KiB
Go
51 lines
1.6 KiB
Go
/*
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Copyright 2024 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package azure
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import (
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"time"
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)
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// zonesCache is a cache for Azure zones(private or public)
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type zonesCache[T any] struct {
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age time.Time
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duration time.Duration
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zones []T
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}
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// Reset method to reset the zones and update the age. This will be used to update the cache
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// after making a new API call to get the zones.
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func (z *zonesCache[T]) Reset(zones []T) {
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if z.duration > time.Duration(0) {
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z.age = time.Now()
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z.zones = zones
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}
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}
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// Get method to retrieve the cached zones. If cache is not expired, this will be used
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// instead of making a new API call to get the zones.
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func (z *zonesCache[T]) Get() []T {
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return z.zones
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}
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// Expired method to check if the cache has expired based on duration or if zones are empty.
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// If cache is expired, a new API call will be made to get the zones. If zones are empty, a new
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// API call will be made to get the zones. This case comes in at the time of initialization.
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func (z *zonesCache[T]) Expired() bool {
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return len(z.zones) < 1 || time.Since(z.age) > z.duration
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}
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