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113 lines
3.9 KiB
113 lines
3.9 KiB
package cache
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import (
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"OpenIM/pkg/common/db/relation"
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relationTb "OpenIM/pkg/common/db/table/relation"
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"OpenIM/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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friendExpireTime = time.Second * 60 * 60 * 12
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friendIDsKey = "FRIEND_IDS:"
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TwoWayFriendsIDsKey = "COMMON_FRIENDS_IDS:"
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friendKey = "FRIEND_INFO:"
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)
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// args fn will exec when no data in cache
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type FriendCache interface {
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GetFriendIDs(ctx context.Context, ownerUserID string, fn func(ctx context.Context, ownerUserID string) (friendIDs []string, err error)) (friendIDs []string, err error)
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// call when friendID List changed
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DelFriendIDs(ctx context.Context, ownerUserID string) (err error)
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// get single friendInfo from cache
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GetFriend(ctx context.Context, ownerUserID, friendUserID string, fn func(ctx context.Context, ownerUserID, friendUserID string) (friend *relationTb.FriendModel, err error)) (friend *relationTb.FriendModel, err error)
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// del friend when friend info changed
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DelFriend(ctx context.Context, ownerUserID, friendUserID string) (err error)
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}
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type FriendCacheRedis struct {
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friendDB *relation.FriendGorm
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expireTime time.Duration
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rcClient *rockscache.Client
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}
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func NewFriendCacheRedis(rdb redis.UniversalClient, friendDB *relation.FriendGorm, options rockscache.Options) *FriendCacheRedis {
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return &FriendCacheRedis{
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friendDB: friendDB,
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expireTime: friendExpireTime,
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rcClient: rockscache.NewClient(rdb, options),
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}
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}
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func (f *FriendCacheRedis) getFriendIDsKey(ownerUserID string) string {
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return friendIDsKey + ownerUserID
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}
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func (f *FriendCacheRedis) getTwoWayFriendsIDsKey(ownerUserID string) string {
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return TwoWayFriendsIDsKey + ownerUserID
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}
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func (f *FriendCacheRedis) getFriendKey(ownerUserID, friendUserID string) string {
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return friendKey + ownerUserID + "-" + friendUserID
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}
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func (f *FriendCacheRedis) GetFriendIDs(ctx context.Context, ownerUserID string) (friendIDs []string, err error) {
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return GetCache(ctx, f.rcClient, f.getFriendIDsKey(ownerUserID), f.expireTime, func(ctx context.Context) ([]string, error) {
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return f.friendDB.FindFriendUserIDs(ctx, ownerUserID)
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})
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}
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func (f *FriendCacheRedis) DelFriendIDs(ctx context.Context, ownerUserID string) (err error) {
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return f.rcClient.TagAsDeleted(f.getFriendIDsKey(ownerUserID))
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}
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func (f *FriendCacheRedis) GetTwoWayFriendIDs(ctx context.Context, ownerUserID string) (twoWayFriendIDs []string, err error) {
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friendIDs, err := f.GetFriendIDs(ctx, ownerUserID)
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if err != nil {
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return nil, err
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}
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for _, friendID := range friendIDs {
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friendFriendID, err := f.GetFriendIDs(ctx, friendID)
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if err != nil {
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return nil, err
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}
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if utils.IsContain(ownerUserID, friendFriendID) {
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twoWayFriendIDs = append(twoWayFriendIDs, ownerUserID)
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}
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}
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return twoWayFriendIDs, nil
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}
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func (f *FriendCacheRedis) DelTwoWayFriendIDs(ctx context.Context, ownerUserID string) (err error) {
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return f.rcClient.TagAsDeleted(f.getTwoWayFriendsIDsKey(ownerUserID))
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}
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func (f *FriendCacheRedis) GetFriend(ctx context.Context, ownerUserID, friendUserID string, fn func(ctx context.Context, ownerUserID, friendUserID string) (friend *relationTb.FriendModel, err error)) (friend *relationTb.FriendModel, err error) {
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getFriend := func() (string, error) {
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friend, err = f.friendDB.Take(ctx, ownerUserID, friendUserID)
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if err != nil {
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return "", err
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}
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bytes, err := json.Marshal(friend)
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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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friendStr, err := f.rcClient.Fetch(f.getFriendKey(ownerUserID, friendUserID), f.expireTime, getFriend)
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if err != nil {
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return nil, err
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}
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friend = &relationTb.FriendModel{}
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err = json.Unmarshal([]byte(friendStr), friend)
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return friend, utils.Wrap(err, "")
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}
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func (f *FriendCacheRedis) DelFriend(ctx context.Context, ownerUserID, friendUserID string) (err error) {
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return f.rcClient.TagAsDeleted(f.getFriendKey(ownerUserID, friendUserID))
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}
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