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Open-IM-Server/pkg/common/db/cache/black.go

95 lines
2.5 KiB

// Copyright © 2023 OpenIM. All rights reserved.
//
// 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 (
"context"
"time"
"github.com/dtm-labs/rockscache"
"github.com/redis/go-redis/v9"
relationtb "github.com/openimsdk/open-im-server/v3/pkg/common/db/table/relation"
)
const (
blackIDsKey = "BLACK_IDS:"
blackExpireTime = time.Second * 60 * 60 * 12
)
// args fn will exec when no data in msgCache.
type BlackCache interface {
// get blackIDs from msgCache
metaCache
NewCache() BlackCache
GetBlackIDs(ctx context.Context, userID string) (blackIDs []string, err error)
// del user's blackIDs msgCache, exec when a user's black list changed
DelBlackIDs(ctx context.Context, userID string) BlackCache
}
type BlackCacheRedis struct {
metaCache
expireTime time.Duration
rcClient *rockscache.Client
blackDB relationtb.BlackModelInterface
}
func NewBlackCacheRedis(
rdb redis.UniversalClient,
blackDB relationtb.BlackModelInterface,
options rockscache.Options,
) BlackCache {
rcClient := rockscache.NewClient(rdb, options)
return &BlackCacheRedis{
expireTime: blackExpireTime,
rcClient: rcClient,
metaCache: NewMetaCacheRedis(rcClient),
blackDB: blackDB,
}
}
func (b *BlackCacheRedis) NewCache() BlackCache {
return &BlackCacheRedis{
expireTime: b.expireTime,
rcClient: b.rcClient,
blackDB: b.blackDB,
metaCache: NewMetaCacheRedis(b.rcClient, b.metaCache.GetPreDelKeys()...),
}
}
func (b *BlackCacheRedis) getBlackIDsKey(ownerUserID string) string {
return blackIDsKey + ownerUserID
}
func (b *BlackCacheRedis) GetBlackIDs(ctx context.Context, userID string) (blackIDs []string, err error) {
return getCache(
ctx,
b.rcClient,
b.getBlackIDsKey(userID),
b.expireTime,
func(ctx context.Context) ([]string, error) {
return b.blackDB.FindBlackUserIDs(ctx, userID)
},
)
}
func (b *BlackCacheRedis) DelBlackIDs(ctx context.Context, userID string) BlackCache {
cache := b.NewCache()
cache.AddKeys(b.getBlackIDsKey(userID))
return cache
}