复制项目

pkg/common/db/cache/user_login_ip.go

@@ -0,0 +1,86 @@
+// Copyright © 2023 OpenIM open source community. 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/openimsdk/tools/errs"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	userLoginIPPrefix = "CHAT:USER_LOGIN_IP:"
+	// 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）
+	userLoginIPExpire = 7 * 24 * time.Hour
+)
+
+func getUserLoginIPKey(userID string) string {
+	return userLoginIPPrefix + userID
+}
+
+type UserLoginIPInterface interface {
+	// GetLatestLoginIP 获取用户最新登录IP（从缓存）
+	// 返回值：(ip, found, error)
+	// - ip: 缓存的IP值（如果found为false，则ip为空字符串）
+	// - found: 是否在缓存中找到（true表示缓存命中，false表示缓存未命中）
+	// - error: 错误信息
+	GetLatestLoginIP(ctx context.Context, userID string) (string, bool, error)
+	// SetLatestLoginIP 设置用户最新登录IP到缓存
+	SetLatestLoginIP(ctx context.Context, userID, ip string) error
+	// DeleteLatestLoginIP 删除用户最新登录IP缓存（用于保证缓存一致性）
+	DeleteLatestLoginIP(ctx context.Context, userID string) error
+}
+
+type userLoginIPCacheRedis struct {
+	rdb redis.UniversalClient
+}
+
+func NewUserLoginIPInterface(rdb redis.UniversalClient) UserLoginIPInterface {
+	return &userLoginIPCacheRedis{rdb: rdb}
+}
+
+func (u *userLoginIPCacheRedis) GetLatestLoginIP(ctx context.Context, userID string) (string, bool, error) {
+	key := getUserLoginIPKey(userID)
+	ip, err := u.rdb.Get(ctx, key).Result()
+	if err != nil {
+		if err == redis.Nil {
+			// 缓存不存在，返回 false 表示缓存未命中
+			return "", false, nil
+		}
+		return "", false, errs.Wrap(err)
+	}
+	// 缓存命中，返回 true
+	return ip, true, nil
+}
+
+func (u *userLoginIPCacheRedis) SetLatestLoginIP(ctx context.Context, userID, ip string) error {
+	key := getUserLoginIPKey(userID)
+	err := u.rdb.Set(ctx, key, ip, userLoginIPExpire).Err()
+	if err != nil {
+		return errs.Wrap(err)
+	}
+	return nil
+}
+
+func (u *userLoginIPCacheRedis) DeleteLatestLoginIP(ctx context.Context, userID string) error {
+	key := getUserLoginIPKey(userID)
+	err := u.rdb.Del(ctx, key).Err()
+	if err != nil {
+		return errs.Wrap(err)
+	}
+	return nil
+}