mirror of
https://github.com/linux-do/new-api.git
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366 lines
10 KiB
Go
366 lines
10 KiB
Go
package model
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import (
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"encoding/json"
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"errors"
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"fmt"
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"math/rand"
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"one-api/common"
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"sort"
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"strconv"
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"strings"
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"sync"
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"time"
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)
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var (
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TokenCacheSeconds = common.SyncFrequency
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UserId2GroupCacheSeconds = common.SyncFrequency
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UserId2QuotaCacheSeconds = common.SyncFrequency
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UserId2StatusCacheSeconds = common.SyncFrequency
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)
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// 仅用于定时同步缓存
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var token2UserId = make(map[string]int)
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var token2UserIdLock sync.RWMutex
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func cacheSetToken(token *Token) error {
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jsonBytes, err := json.Marshal(token)
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if err != nil {
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return err
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}
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err = common.RedisSet(fmt.Sprintf("token:%s", token.Key), string(jsonBytes), time.Duration(TokenCacheSeconds)*time.Second)
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if err != nil {
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common.SysError(fmt.Sprintf("failed to set token %s to redis: %s", token.Key, err.Error()))
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return err
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}
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token2UserIdLock.Lock()
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defer token2UserIdLock.Unlock()
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token2UserId[token.Key] = token.UserId
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return nil
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}
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// CacheGetTokenByKey 从缓存中获取 token 并续期时间，如果缓存中不存在，则从数据库中获取
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func CacheGetTokenByKey(key string) (*Token, error) {
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if !common.RedisEnabled {
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return GetTokenByKey(key)
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}
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var token *Token
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tokenObjectString, err := common.RedisGet(fmt.Sprintf("token:%s", key))
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if err != nil {
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// 如果缓存中不存在，则从数据库中获取
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token, err = GetTokenByKey(key)
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if err != nil {
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return nil, err
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}
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err = cacheSetToken(token)
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return token, nil
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}
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// 如果缓存中存在，则续期时间
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err = common.RedisExpire(fmt.Sprintf("token:%s", key), time.Duration(TokenCacheSeconds)*time.Second)
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err = json.Unmarshal([]byte(tokenObjectString), &token)
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return token, err
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}
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func SyncTokenCache(frequency int) {
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for {
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time.Sleep(time.Duration(frequency) * time.Second)
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common.SysLog("syncing tokens from database")
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token2UserIdLock.Lock()
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// 从token2UserId中获取所有的key
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var copyToken2UserId = make(map[string]int)
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for s, i := range token2UserId {
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copyToken2UserId[s] = i
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}
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token2UserId = make(map[string]int)
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token2UserIdLock.Unlock()
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for key := range copyToken2UserId {
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token, err := GetTokenByKey(key)
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if err != nil {
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// 如果数据库中不存在，则删除缓存
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common.SysError(fmt.Sprintf("failed to get token %s from database: %s", key, err.Error()))
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//delete redis
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err := common.RedisDel(fmt.Sprintf("token:%s", key))
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if err != nil {
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common.SysError(fmt.Sprintf("failed to delete token %s from redis: %s", key, err.Error()))
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}
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} else {
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// 如果数据库中存在，先检查redis
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_, err := common.RedisGet(fmt.Sprintf("token:%s", key))
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if err != nil {
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// 如果redis中不存在，则跳过
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continue
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}
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err = cacheSetToken(token)
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if err != nil {
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common.SysError(fmt.Sprintf("failed to update token %s to redis: %s", key, err.Error()))
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}
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}
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}
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}
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}
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func CacheGetUserGroup(id int) (group string, err error) {
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if !common.RedisEnabled {
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return GetUserGroup(id)
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}
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group, err = common.RedisGet(fmt.Sprintf("user_group:%d", id))
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if err != nil {
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group, err = GetUserGroup(id)
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if err != nil {
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return "", err
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}
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err = common.RedisSet(fmt.Sprintf("user_group:%d", id), group, time.Duration(UserId2GroupCacheSeconds)*time.Second)
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if err != nil {
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common.SysError("Redis set user group error: " + err.Error())
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}
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}
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return group, err
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}
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func CacheGetUsername(id int) (username string, err error) {
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if !common.RedisEnabled {
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return GetUsernameById(id)
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}
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username, err = common.RedisGet(fmt.Sprintf("user_name:%d", id))
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if err != nil {
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username, err = GetUsernameById(id)
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if err != nil {
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return "", err
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}
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err = common.RedisSet(fmt.Sprintf("user_name:%d", id), username, time.Duration(UserId2GroupCacheSeconds)*time.Second)
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if err != nil {
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common.SysError("Redis set user group error: " + err.Error())
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}
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}
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return username, err
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}
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func CacheGetUserQuota(id int) (quota int, err error) {
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if !common.RedisEnabled {
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return GetUserQuota(id)
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}
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quotaString, err := common.RedisGet(fmt.Sprintf("user_quota:%d", id))
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if err != nil {
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quota, err = GetUserQuota(id)
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if err != nil {
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return 0, err
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}
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err = common.RedisSet(fmt.Sprintf("user_quota:%d", id), fmt.Sprintf("%d", quota), time.Duration(UserId2QuotaCacheSeconds)*time.Second)
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if err != nil {
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common.SysError("Redis set user quota error: " + err.Error())
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}
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return quota, err
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}
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quota, err = strconv.Atoi(quotaString)
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return quota, err
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}
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func CacheUpdateUserQuota(id int) error {
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if !common.RedisEnabled {
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return nil
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}
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quota, err := GetUserQuota(id)
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if err != nil {
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return err
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}
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return cacheSetUserQuota(id, quota)
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}
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func cacheSetUserQuota(id int, quota int) error {
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err := common.RedisSet(fmt.Sprintf("user_quota:%d", id), fmt.Sprintf("%d", quota), time.Duration(UserId2QuotaCacheSeconds)*time.Second)
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return err
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}
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func CacheDecreaseUserQuota(id int, quota int) error {
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if !common.RedisEnabled {
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return nil
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}
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err := common.RedisDecrease(fmt.Sprintf("user_quota:%d", id), int64(quota))
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return err
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}
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func CacheIsUserEnabled(userId int) (bool, error) {
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if !common.RedisEnabled {
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return IsUserEnabled(userId)
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}
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enabled, err := common.RedisGet(fmt.Sprintf("user_enabled:%d", userId))
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if err == nil {
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return enabled == "1", nil
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}
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userEnabled, err := IsUserEnabled(userId)
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if err != nil {
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return false, err
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}
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enabled = "0"
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if userEnabled {
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enabled = "1"
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}
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err = common.RedisSet(fmt.Sprintf("user_enabled:%d", userId), enabled, time.Duration(UserId2StatusCacheSeconds)*time.Second)
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if err != nil {
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common.SysError("Redis set user enabled error: " + err.Error())
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}
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return userEnabled, err
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}
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func CacheIsLinuxDoEnabled(userId int) (bool, error) {
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if !common.RedisEnabled {
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return IsLinuxDoEnabled(userId)
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}
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enabled, err := common.RedisGet(fmt.Sprintf("linuxdo_enabled:%d", userId))
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if err == nil {
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return enabled == "1", nil
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}
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linuxDoEnabled, err := IsLinuxDoEnabled(userId)
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if err != nil {
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return false, err
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}
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enabled = "0"
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if linuxDoEnabled {
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enabled = "1"
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}
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err = common.RedisSet(fmt.Sprintf("linuxdo_enabled:%d", userId), enabled, time.Duration(UserId2StatusCacheSeconds)*time.Second)
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if err != nil {
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common.SysError("Redis set linuxdo enabled error: " + err.Error())
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}
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return linuxDoEnabled, err
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}
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var group2model2channels map[string]map[string][]*Channel
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var channelsIDM map[int]*Channel
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var channelSyncLock sync.RWMutex
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func InitChannelCache() {
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newChannelId2channel := make(map[int]*Channel)
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var channels []*Channel
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DB.Where("status = ?", common.ChannelStatusEnabled).Find(&channels)
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for _, channel := range channels {
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newChannelId2channel[channel.Id] = channel
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}
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var abilities []*Ability
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DB.Find(&abilities)
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groups := make(map[string]bool)
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for _, ability := range abilities {
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groups[ability.Group] = true
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}
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newGroup2model2channels := make(map[string]map[string][]*Channel)
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newChannelsIDM := make(map[int]*Channel)
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for group := range groups {
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newGroup2model2channels[group] = make(map[string][]*Channel)
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}
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for _, channel := range channels {
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newChannelsIDM[channel.Id] = channel
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groups := strings.Split(channel.Group, ",")
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for _, group := range groups {
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models := strings.Split(channel.Models, ",")
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for _, model := range models {
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if _, ok := newGroup2model2channels[group][model]; !ok {
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newGroup2model2channels[group][model] = make([]*Channel, 0)
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}
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newGroup2model2channels[group][model] = append(newGroup2model2channels[group][model], channel)
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}
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}
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}
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// sort by priority
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for group, model2channels := range newGroup2model2channels {
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for model, channels := range model2channels {
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sort.Slice(channels, func(i, j int) bool {
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return channels[i].GetPriority() > channels[j].GetPriority()
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})
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newGroup2model2channels[group][model] = channels
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}
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}
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channelSyncLock.Lock()
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group2model2channels = newGroup2model2channels
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channelsIDM = newChannelsIDM
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channelSyncLock.Unlock()
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common.SysLog("channels synced from database")
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}
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func SyncChannelCache(frequency int) {
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for {
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time.Sleep(time.Duration(frequency) * time.Second)
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common.SysLog("syncing channels from database")
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InitChannelCache()
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}
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}
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func CacheGetRandomSatisfiedChannel(group string, model string, retry int) (*Channel, error) {
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if strings.HasPrefix(model, "gpt-4-gizmo") {
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model = "gpt-4-gizmo-*"
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}
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// if memory cache is disabled, get channel directly from database
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if !common.MemoryCacheEnabled {
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return GetRandomSatisfiedChannel(group, model, retry)
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}
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channelSyncLock.RLock()
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defer channelSyncLock.RUnlock()
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channels := group2model2channels[group][model]
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if len(channels) == 0 {
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return nil, errors.New("channel not found")
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}
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uniquePriorities := make(map[int]bool)
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for _, channel := range channels {
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uniquePriorities[int(channel.GetPriority())] = true
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}
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var sortedUniquePriorities []int
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for priority := range uniquePriorities {
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sortedUniquePriorities = append(sortedUniquePriorities, priority)
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}
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sort.Sort(sort.Reverse(sort.IntSlice(sortedUniquePriorities)))
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if retry >= len(uniquePriorities) {
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retry = len(uniquePriorities) - 1
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}
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targetPriority := int64(sortedUniquePriorities[retry])
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// get the priority for the given retry number
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var targetChannels []*Channel
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for _, channel := range channels {
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if channel.GetPriority() == targetPriority {
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targetChannels = append(targetChannels, channel)
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}
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}
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// 平滑系数
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smoothingFactor := 10
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// Calculate the total weight of all channels up to endIdx
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totalWeight := 0
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for _, channel := range targetChannels {
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totalWeight += channel.GetWeight() + smoothingFactor
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}
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// Generate a random value in the range [0, totalWeight)
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randomWeight := rand.Intn(totalWeight)
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// Find a channel based on its weight
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for _, channel := range targetChannels {
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randomWeight -= channel.GetWeight() + smoothingFactor
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if randomWeight < 0 {
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return channel, nil
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}
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}
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// return null if no channel is not found
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return nil, errors.New("channel not found")
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}
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func CacheGetChannel(id int) (*Channel, error) {
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if !common.MemoryCacheEnabled {
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return GetChannelById(id, true)
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}
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channelSyncLock.RLock()
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defer channelSyncLock.RUnlock()
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c, ok := channelsIDM[id]
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if !ok {
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return nil, errors.New(fmt.Sprintf("当前渠道# %d，已不存在", id))
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}
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return c, nil
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}
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