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71 lines
2.0 KiB
71 lines
2.0 KiB
package cache
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import (
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"Open_IM/pkg/common/tracelog"
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"Open_IM/pkg/utils"
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"context"
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"encoding/json"
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"github.com/dtm-labs/rockscache"
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"github.com/go-redis/redis/v8"
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"time"
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)
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const (
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blackIDsKey = "BLACK_IDS:"
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blackExpireTime = time.Second * 60 * 60 * 12
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)
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// args fn will exec when no data in cache
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type BlackCache interface {
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//get blackIDs from cache
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GetBlackIDs(ctx context.Context, userID string, fn func(ctx context.Context, userID string) ([]string, error)) (blackIDs []string, err error)
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//del user's blackIDs cache, exec when a user's black list changed
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DelBlackIDs(ctx context.Context, userID string) (err error)
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}
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type BlackCacheRedis struct {
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expireTime time.Duration
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rcClient *rockscache.Client
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}
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func NewBlackCacheRedis(rdb redis.UniversalClient, blackDB BlackCache, options rockscache.Options) *BlackCacheRedis {
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return &BlackCacheRedis{
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expireTime: blackExpireTime,
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rcClient: rockscache.NewClient(rdb, options),
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}
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}
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func (b *BlackCacheRedis) getBlackIDsKey(ownerUserID string) string {
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return blackIDsKey + ownerUserID
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}
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func (b *BlackCacheRedis) GetBlackIDs(ctx context.Context, userID string) (blackIDs []string, err error) {
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getBlackIDList := func() (string, error) {
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blackIDs, err := b.blackDB.GetBlackIDs(ctx, userID)
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if err != nil {
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return "", utils.Wrap(err, "")
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}
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bytes, err := json.Marshal(blackIDs)
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if err != nil {
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return "", utils.Wrap(err, "")
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}
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return string(bytes), nil
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}
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defer func() {
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tracelog.SetCtxDebug(ctx, utils.GetFuncName(1), err, "userID", userID, "blackIDList", blackIDs)
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}()
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blackIDListStr, err := b.rcClient.Fetch(blackListCache+userID, b.expireTime, getBlackIDList)
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if err != nil {
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return nil, utils.Wrap(err, "")
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}
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err = json.Unmarshal([]byte(blackIDListStr), &blackIDs)
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return blackIDs, utils.Wrap(err, "")
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}
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func (b *BlackCacheRedis) DelBlackIDs(ctx context.Context, userID string) (err error) {
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defer func() {
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tracelog.SetCtxDebug(ctx, utils.GetFuncName(1), err, "userID", userID)
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}()
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return b.rcClient.TagAsDeleted(blackListCache + userID)
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}
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