mirror of
https://github.com/yangjian102621/geekai.git
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250 lines
7.1 KiB
Go
250 lines
7.1 KiB
Go
package mj
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import (
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"chatplus/core/types"
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"chatplus/service/oss"
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"chatplus/store"
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"chatplus/store/model"
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"chatplus/store/vo"
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"chatplus/utils"
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"context"
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"encoding/base64"
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"fmt"
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"github.com/go-redis/redis/v8"
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"gorm.io/gorm"
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"time"
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)
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// MJ 绘画服务
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const RunningJobKey = "MidJourney_Running_Job"
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type Service struct {
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client *Client // MJ 客户端
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taskQueue *store.RedisQueue
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redis *redis.Client
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db *gorm.DB
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uploadManager *oss.UploaderManager
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Clients *types.LMap[string, *types.WsClient] // MJ 绘画页面 websocket 连接池，用户推送绘画消息
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ChatClients *types.LMap[string, *types.WsClient] // 聊天页面 websocket 连接池，用于推送绘画消息
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proxyURL string
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}
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func NewService(redisCli *redis.Client, db *gorm.DB, client *Client, manager *oss.UploaderManager, config *types.AppConfig) *Service {
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return &Service{
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redis: redisCli,
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db: db,
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taskQueue: store.NewRedisQueue("MidJourney_Task_Queue", redisCli),
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client: client,
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uploadManager: manager,
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Clients: types.NewLMap[string, *types.WsClient](),
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ChatClients: types.NewLMap[string, *types.WsClient](),
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proxyURL: config.ProxyURL,
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}
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}
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func (s *Service) Run() {
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logger.Info("Starting MidJourney job consumer.")
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ctx := context.Background()
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for {
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_, err := s.redis.Get(ctx, RunningJobKey).Result()
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if err == nil { // 队列串行执行
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time.Sleep(time.Second * 3)
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continue
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}
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var task types.MjTask
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err = s.taskQueue.LPop(&task)
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if err != nil {
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logger.Errorf("taking task with error: %v", err)
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continue
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}
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logger.Infof("Consuming Task: %+v", task)
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switch task.Type {
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case types.TaskImage:
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err = s.client.Imagine(task.Prompt)
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break
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case types.TaskUpscale:
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err = s.client.Upscale(task.Index, task.MessageId, task.MessageHash)
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break
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case types.TaskVariation:
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err = s.client.Variation(task.Index, task.MessageId, task.MessageHash)
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}
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if err != nil {
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logger.Error("绘画任务执行失败：", err)
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if task.RetryCount <= 5 {
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s.taskQueue.RPush(task)
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}
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task.RetryCount += 1
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time.Sleep(time.Second * 3)
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continue
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}
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// 更新任务的执行状态
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s.db.Model(&model.MidJourneyJob{}).Where("id = ?", task.Id).UpdateColumn("started", true)
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// 锁定任务执行通道，直到任务超时（5分钟）
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s.redis.Set(ctx, RunningJobKey, utils.JsonEncode(task), time.Minute*5)
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}
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}
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func (s *Service) PushTask(task types.MjTask) {
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logger.Infof("add a new MidJourney Task: %+v", task)
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s.taskQueue.RPush(task)
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}
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func (s *Service) Notify(data CBReq) {
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taskString, err := s.redis.Get(context.Background(), RunningJobKey).Result()
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if err != nil { // 过期任务，丢弃
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logger.Warn("任务已过期：", err)
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return
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}
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var task types.MjTask
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err = utils.JsonDecode(taskString, &task)
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if err != nil { // 非标准任务，丢弃
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logger.Warn("任务解析失败：", err)
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return
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}
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var job model.MidJourneyJob
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res := s.db.Where("message_id = ?", data.MessageId).First(&job)
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if res.Error == nil && data.Status == Finished {
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logger.Warn("重复消息：", data.MessageId)
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return
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}
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if task.Src == types.TaskSrcImg { // 绘画任务
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var job model.MidJourneyJob
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res := s.db.Where("id = ?", task.Id).First(&job)
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if res.Error != nil {
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logger.Warn("非法任务：", res.Error)
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return
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}
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job.MessageId = data.MessageId
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job.ReferenceId = data.ReferenceId
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job.Progress = data.Progress
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job.Prompt = data.Prompt
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job.Hash = data.Image.Hash
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// 任务完成，将最终的图片下载下来
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if data.Progress == 100 {
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imgURL, err := s.uploadManager.GetUploadHandler().PutImg(data.Image.URL, true)
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if err != nil {
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logger.Error("error with download img: ", err.Error())
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return
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}
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job.ImgURL = imgURL
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} else {
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// 临时图片直接保存，访问的时候使用代理进行转发
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job.ImgURL = data.Image.URL
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}
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res = s.db.Updates(&job)
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if res.Error != nil {
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logger.Error("error with update job: ", res.Error)
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return
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}
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var jobVo vo.MidJourneyJob
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err := utils.CopyObject(job, &jobVo)
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if err == nil {
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if data.Progress < 100 {
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image, err := utils.DownloadImage(jobVo.ImgURL, s.proxyURL)
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if err == nil {
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jobVo.ImgURL = "data:image/png;base64," + base64.StdEncoding.EncodeToString(image)
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}
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}
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// 推送任务到前端
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client := s.Clients.Get(task.SessionId)
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if client != nil {
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utils.ReplyChunkMessage(client, jobVo)
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}
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}
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} else if task.Src == types.TaskSrcChat { // 聊天任务
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wsClient := s.ChatClients.Get(task.SessionId)
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if data.Status == Finished {
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if wsClient != nil && data.ReferenceId != "" {
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content := fmt.Sprintf("**%s** 任务执行成功，正在从 MidJourney 服务器下载图片，请稍后...", data.Prompt)
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utils.ReplyMessage(wsClient, content)
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}
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// download image
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imgURL, err := s.uploadManager.GetUploadHandler().PutImg(data.Image.URL, true)
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if err != nil {
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logger.Error("error with download image: ", err)
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if wsClient != nil && data.ReferenceId != "" {
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content := fmt.Sprintf("**%s** 图片下载失败：%s", data.Prompt, err.Error())
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utils.ReplyMessage(wsClient, content)
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}
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return
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}
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tx := s.db.Begin()
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data.Image.URL = imgURL
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message := model.HistoryMessage{
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UserId: uint(task.UserId),
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ChatId: task.ChatId,
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RoleId: uint(task.RoleId),
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Type: types.MjMsg,
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Icon: task.Icon,
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Content: utils.JsonEncode(data),
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Tokens: 0,
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UseContext: false,
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}
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res = tx.Create(&message)
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if res.Error != nil {
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logger.Error("error with update database: ", err)
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return
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}
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// save the job
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job.UserId = task.UserId
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job.Type = task.Type.String()
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job.MessageId = data.MessageId
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job.ReferenceId = data.ReferenceId
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job.Prompt = data.Prompt
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job.ImgURL = imgURL
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job.Progress = data.Progress
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job.Hash = data.Image.Hash
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job.CreatedAt = time.Now()
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res = tx.Create(&job)
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if res.Error != nil {
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logger.Error("error with update database: ", err)
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tx.Rollback()
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return
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}
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tx.Commit()
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}
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if wsClient == nil { // 客户端断线，则丢弃
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logger.Errorf("Client is offline: %+v", data)
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return
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}
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if data.Status == Finished {
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utils.ReplyChunkMessage(wsClient, types.WsMessage{Type: types.WsMjImg, Content: data})
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utils.ReplyChunkMessage(wsClient, types.WsMessage{Type: types.WsEnd})
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// 本次绘画完毕，移除客户端
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s.ChatClients.Delete(task.SessionId)
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} else {
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// 使用代理临时转发图片
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if data.Image.URL != "" {
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image, err := utils.DownloadImage(data.Image.URL, s.proxyURL)
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if err == nil {
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data.Image.URL = "data:image/png;base64," + base64.StdEncoding.EncodeToString(image)
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}
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}
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utils.ReplyChunkMessage(wsClient, types.WsMessage{Type: types.WsMjImg, Content: data})
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}
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}
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// 更新用户剩余绘图次数
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// TODO: 放大图片是否需要消耗绘图次数？
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if data.Status == Finished {
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s.db.Model(&model.User{}).Where("id = ?", task.UserId).UpdateColumn("img_calls", gorm.Expr("img_calls - ?", 1))
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// 解除任务锁定
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s.redis.Del(context.Background(), RunningJobKey)
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}
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}
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