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293 lines
8.1 KiB
293 lines
8.1 KiB
// Copyright © 2023 OpenIM. All rights reserved.
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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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package cache
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import (
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"context"
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"encoding/json"
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"hash/crc32"
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"strconv"
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"time"
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"github.com/OpenIMSDK/protocol/constant"
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"github.com/OpenIMSDK/protocol/user"
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"github.com/OpenIMSDK/tools/errs"
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"github.com/dtm-labs/rockscache"
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"github.com/redis/go-redis/v9"
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relationtb "github.com/openimsdk/open-im-server/v3/pkg/common/db/table/relation"
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)
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const (
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userExpireTime = time.Second * 60 * 60 * 12
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userInfoKey = "USER_INFO:"
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userGlobalRecvMsgOptKey = "USER_GLOBAL_RECV_MSG_OPT_KEY:"
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olineStatusKey = "ONLINE_STATUS:"
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userOlineStatusExpireTime = time.Second * 60 * 60 * 24
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statusMod = 501
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platformID = "_PlatformIDSuffix"
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)
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type UserCache interface {
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metaCache
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NewCache() UserCache
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GetUserInfo(ctx context.Context, userID string) (userInfo *relationtb.UserModel, err error)
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GetUsersInfo(ctx context.Context, userIDs []string) ([]*relationtb.UserModel, error)
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DelUsersInfo(userIDs ...string) UserCache
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GetUserGlobalRecvMsgOpt(ctx context.Context, userID string) (opt int, err error)
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DelUsersGlobalRecvMsgOpt(userIDs ...string) UserCache
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GetUserStatus(ctx context.Context, userIDs []string) ([]*user.OnlineStatus, error)
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SetUserStatus(ctx context.Context, list []*user.OnlineStatus) error
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}
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type UserCacheRedis struct {
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metaCache
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rdb redis.UniversalClient
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userDB relationtb.UserModelInterface
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expireTime time.Duration
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rcClient *rockscache.Client
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}
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func NewUserCacheRedis(
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rdb redis.UniversalClient,
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userDB relationtb.UserModelInterface,
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options rockscache.Options,
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) UserCache {
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rcClient := rockscache.NewClient(rdb, options)
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return &UserCacheRedis{
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rdb: rdb,
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metaCache: NewMetaCacheRedis(rcClient),
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userDB: userDB,
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expireTime: userExpireTime,
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rcClient: rcClient,
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}
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}
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func (u *UserCacheRedis) NewCache() UserCache {
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return &UserCacheRedis{
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rdb: u.rdb,
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metaCache: NewMetaCacheRedis(u.rcClient, u.metaCache.GetPreDelKeys()...),
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userDB: u.userDB,
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expireTime: u.expireTime,
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rcClient: u.rcClient,
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}
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}
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func (u *UserCacheRedis) getUserInfoKey(userID string) string {
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return userInfoKey + userID
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}
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func (u *UserCacheRedis) getUserGlobalRecvMsgOptKey(userID string) string {
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return userGlobalRecvMsgOptKey + userID
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}
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func (u *UserCacheRedis) getUserStatusHashKey(userID string, Id int32) string {
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return userID + "_" + string(Id) + platformID
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}
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func (u *UserCacheRedis) GetUserInfo(ctx context.Context, userID string) (userInfo *relationtb.UserModel, err error) {
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return getCache(
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ctx,
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u.rcClient,
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u.getUserInfoKey(userID),
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u.expireTime,
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func(ctx context.Context) (*relationtb.UserModel, error) {
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return u.userDB.Take(ctx, userID)
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},
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)
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}
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func (u *UserCacheRedis) GetUsersInfo(ctx context.Context, userIDs []string) ([]*relationtb.UserModel, error) {
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var keys []string
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for _, userID := range userIDs {
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keys = append(keys, u.getUserInfoKey(userID))
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}
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return batchGetCache(
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ctx,
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u.rcClient,
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keys,
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u.expireTime,
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func(user *relationtb.UserModel, keys []string) (int, error) {
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for i, key := range keys {
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if key == u.getUserInfoKey(user.UserID) {
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return i, nil
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}
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}
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return 0, errIndex
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},
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func(ctx context.Context) ([]*relationtb.UserModel, error) {
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return u.userDB.Find(ctx, userIDs)
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},
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)
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}
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func (u *UserCacheRedis) DelUsersInfo(userIDs ...string) UserCache {
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var keys []string
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for _, userID := range userIDs {
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keys = append(keys, u.getUserInfoKey(userID))
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}
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cache := u.NewCache()
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cache.AddKeys(keys...)
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return cache
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}
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func (u *UserCacheRedis) GetUserGlobalRecvMsgOpt(ctx context.Context, userID string) (opt int, err error) {
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return getCache(
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ctx,
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u.rcClient,
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u.getUserGlobalRecvMsgOptKey(userID),
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u.expireTime,
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func(ctx context.Context) (int, error) {
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return u.userDB.GetUserGlobalRecvMsgOpt(ctx, userID)
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},
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)
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}
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func (u *UserCacheRedis) DelUsersGlobalRecvMsgOpt(userIDs ...string) UserCache {
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var keys []string
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for _, userID := range userIDs {
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keys = append(keys, u.getUserGlobalRecvMsgOptKey(userID))
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}
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cache := u.NewCache()
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cache.AddKeys(keys...)
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return cache
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}
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func (u *UserCacheRedis) getOnlineStatusKey(userID string) string {
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return olineStatusKey + userID
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}
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// GetUserStatus get user status.
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func (u *UserCacheRedis) GetUserStatus(ctx context.Context, userIDs []string) ([]*user.OnlineStatus, error) {
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var res []*user.OnlineStatus
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for _, userID := range userIDs {
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UserIDNum := crc32.ChecksumIEEE([]byte(userID))
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modKey := strconv.Itoa(int(UserIDNum % statusMod))
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var onlineStatus user.OnlineStatus
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key := olineStatusKey + modKey
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result, err := u.rdb.HGet(ctx, key, userID).Result()
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if err != nil {
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if err == redis.Nil {
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// key or field does not exist
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res = append(res, &user.OnlineStatus{
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UserID: userID,
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Status: constant.Offline,
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PlatformIDs: nil,
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})
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continue
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} else {
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return nil, errs.Wrap(err)
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}
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}
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err = json.Unmarshal([]byte(result), &onlineStatus)
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if err != nil {
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return nil, errs.Wrap(err)
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}
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onlineStatus.UserID = userID
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res = append(res, &onlineStatus)
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}
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return res, nil
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}
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// SetUserStatus Set the user status and save it in redis.
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func (u *UserCacheRedis) SetUserStatus(ctx context.Context, list []*user.OnlineStatus) error {
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for _, status := range list {
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var isNewKey int64
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UserIDNum := crc32.ChecksumIEEE([]byte(status.UserID))
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modKey := strconv.Itoa(int(UserIDNum % statusMod))
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key := olineStatusKey + modKey
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jsonData, err := json.Marshal(status)
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if err != nil {
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return errs.Wrap(err)
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}
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isNewKey, err = u.rdb.Exists(ctx, key).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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if isNewKey == 0 {
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_, err = u.rdb.HSet(ctx, key, status.UserID, string(jsonData)).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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u.rdb.Expire(ctx, key, userOlineStatusExpireTime)
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} else {
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result, err := u.rdb.HGet(ctx, key, status.UserID).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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var onlineStatus user.OnlineStatus
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err = json.Unmarshal([]byte(result), &onlineStatus)
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if err != nil {
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return errs.Wrap(err)
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}
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onlineStatus.UserID = status.UserID
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if status.Status == constant.Offline {
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var newPlatformIDs []int32
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for _, val := range onlineStatus.PlatformIDs {
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if val != status.PlatformIDs[0] {
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newPlatformIDs = append(newPlatformIDs, val)
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}
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}
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if newPlatformIDs == nil {
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onlineStatus.Status = constant.Offline
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onlineStatus.PlatformIDs = []int32{}
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newjsonData, err := json.Marshal(&onlineStatus)
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if err != nil {
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return errs.Wrap(err)
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}
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_, err = u.rdb.HSet(ctx, key, status.UserID, string(newjsonData)).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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} else {
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onlineStatus.PlatformIDs = newPlatformIDs
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newjsonData, err := json.Marshal(&onlineStatus)
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if err != nil {
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return errs.Wrap(err)
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}
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_, err = u.rdb.HSet(ctx, key, status.UserID, string(newjsonData)).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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}
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} else {
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onlineStatus.Status = constant.Online
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// Judging whether to be kicked out.
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flag := false
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for _, val := range onlineStatus.PlatformIDs {
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if val == status.PlatformIDs[0] {
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flag = true
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break
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}
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}
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if !flag {
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onlineStatus.PlatformIDs = append(onlineStatus.PlatformIDs, status.PlatformIDs[0])
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}
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newjsonData, err := json.Marshal(&onlineStatus)
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if err != nil {
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return errs.Wrap(err)
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}
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_, err = u.rdb.HSet(ctx, key, status.UserID, string(newjsonData)).Result()
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if err != nil {
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return errs.Wrap(err)
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}
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}
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}
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}
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return nil
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}
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