87 lines
2.7 KiB
Go
87 lines
2.7 KiB
Go
// Copyright © 2023 OpenIM open source community. 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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"time"
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"github.com/openimsdk/tools/errs"
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"github.com/redis/go-redis/v9"
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)
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const (
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userLoginIPPrefix = "CHAT:USER_LOGIN_IP:"
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// 缓存过期时间：7天（用户登录IP变化不频繁，可以设置较长的过期时间）
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userLoginIPExpire = 7 * 24 * time.Hour
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)
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func getUserLoginIPKey(userID string) string {
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return userLoginIPPrefix + userID
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}
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type UserLoginIPInterface interface {
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// GetLatestLoginIP 获取用户最新登录IP（从缓存）
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// 返回值：(ip, found, error)
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// - ip: 缓存的IP值（如果found为false，则ip为空字符串）
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// - found: 是否在缓存中找到（true表示缓存命中，false表示缓存未命中）
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// - error: 错误信息
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GetLatestLoginIP(ctx context.Context, userID string) (string, bool, error)
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// SetLatestLoginIP 设置用户最新登录IP到缓存
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SetLatestLoginIP(ctx context.Context, userID, ip string) error
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// DeleteLatestLoginIP 删除用户最新登录IP缓存（用于保证缓存一致性）
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DeleteLatestLoginIP(ctx context.Context, userID string) error
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}
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type userLoginIPCacheRedis struct {
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rdb redis.UniversalClient
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}
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func NewUserLoginIPInterface(rdb redis.UniversalClient) UserLoginIPInterface {
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return &userLoginIPCacheRedis{rdb: rdb}
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}
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func (u *userLoginIPCacheRedis) GetLatestLoginIP(ctx context.Context, userID string) (string, bool, error) {
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key := getUserLoginIPKey(userID)
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ip, err := u.rdb.Get(ctx, key).Result()
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if err != nil {
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if err == redis.Nil {
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// 缓存不存在，返回 false 表示缓存未命中
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return "", false, nil
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}
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return "", false, errs.Wrap(err)
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}
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// 缓存命中，返回 true
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return ip, true, nil
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}
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func (u *userLoginIPCacheRedis) SetLatestLoginIP(ctx context.Context, userID, ip string) error {
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key := getUserLoginIPKey(userID)
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err := u.rdb.Set(ctx, key, ip, userLoginIPExpire).Err()
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if err != nil {
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return errs.Wrap(err)
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}
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return nil
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}
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func (u *userLoginIPCacheRedis) DeleteLatestLoginIP(ctx context.Context, userID string) error {
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key := getUserLoginIPKey(userID)
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err := u.rdb.Del(ctx, key).Err()
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if err != nil {
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return errs.Wrap(err)
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}
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return nil
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}
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