88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
/*
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* Copyright 2020 The Dragonfly 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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*/
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package cache
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import (
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"fmt"
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"time"
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"github.com/go-redis/cache/v8"
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"d7y.io/dragonfly/v2/manager/config"
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"d7y.io/dragonfly/v2/manager/database"
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)
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const (
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// Seed Peer prefix of cache key.
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SeedPeerNamespace = "seed-peer"
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// Scheduler prefix of cache key.
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SchedulerNamespace = "scheduler"
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// Schedulers prefix of cache key.
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SchedulersNamespace = "schedulers"
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)
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// Cache is cache client.
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type Cache struct {
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*cache.Cache
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TTL time.Duration
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}
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// New cache instance.
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func New(cfg *config.Config) (*Cache, error) {
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var localCache *cache.TinyLFU
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if cfg.Cache != nil {
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localCache = cache.NewTinyLFU(cfg.Cache.Local.Size, cfg.Cache.Local.TTL)
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}
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rdb, err := database.NewRedis(cfg.Database.Redis)
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if err != nil {
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return nil, err
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}
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// If the attribute TTL of cache.Item(cache's instance) is 0, redis expiration time is 1 hour.
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// cfg.TTL Set the expiration time of TinyLFU.
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return &Cache{
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Cache: cache.New(&cache.Options{
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Redis: rdb,
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LocalCache: localCache,
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}),
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TTL: cfg.Cache.Redis.TTL,
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}, nil
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}
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// Make cache key
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func MakeCacheKey(namespace string, id string) string {
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return fmt.Sprintf("manager:%s:%s", namespace, id)
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}
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// Make cache key for seed peer
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func MakeSeedPeerCacheKey(hostname string, clusterID uint) string {
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return MakeCacheKey(SeedPeerNamespace, fmt.Sprintf("%s-%d", hostname, clusterID))
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}
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// Make cache key for scheduler
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func MakeSchedulerCacheKey(hostname string, clusterID uint) string {
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return MakeCacheKey(SchedulerNamespace, fmt.Sprintf("%s-%d", hostname, clusterID))
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}
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// Make cache key for schedulers
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func MakeSchedulersCacheKey(hostname, ip string) string {
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return MakeCacheKey(SchedulersNamespace, fmt.Sprintf("%s-%s", hostname, ip))
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}
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