285 lines
8.4 KiB
Go
285 lines
8.4 KiB
Go
package service
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import (
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"context"
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"errors"
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"fmt"
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"model-gateway/common/util"
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"model-gateway/model/dto"
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"model-gateway/service/gateway"
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"os"
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"path/filepath"
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"strings"
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"time"
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"unicode/utf8"
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"model-gateway/dao"
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"model-gateway/model/entity"
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"github.com/gogf/gf/v2/encoding/gjson"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/os/grpool"
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)
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var AsyncWorker = &asyncWorker{}
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type asyncWorker struct {
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}
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// RunOnce 由上层定时任务触发：一次性抢占并处理一批任务
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// - batchSize: 本次抢占数量
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// - goroutines: 本次并发数（协程池大小）
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func (w *asyncWorker) RunOnce(ctx context.Context, req *dto.RunWorkReq) (res *dto.RunWorkRes, err error) {
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if req.BatchSize <= 0 {
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req.BatchSize = 10
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}
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if req.Goroutines <= 0 {
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req.Goroutines = 1
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}
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tasks, err := dao.Task.ClaimPendingGlobal(ctx, req.BatchSize)
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if err != nil {
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return nil, err
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}
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if len(tasks) == 0 {
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return nil, errors.New("no task to run")
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}
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pool := grpool.New(req.Goroutines)
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defer pool.Close()
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claimed := len(tasks)
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done := make(chan struct{}, claimed)
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for _, t := range tasks {
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task := t
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_ = pool.AddWithRecover(ctx, func(ctx context.Context) {
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w.handleOne(ctx, task, &dto.CreateTaskReq{EpicycleId: 0})
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done <- struct{}{}
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}, func(ctx context.Context, e error) {
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if e != nil {
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task.ErrorMsg = fmt.Sprintf("worker panic: %v", e)
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_ = dao.Task.UpdateFailedGlobal(ctx, task)
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ReleaseQueueSlot(ctx, task.ModelName, task.TaskID)
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}
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done <- struct{}{}
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})
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}
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for i := 0; i < claimed; i++ {
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<-done
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}
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return &dto.RunWorkRes{
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Claimed: claimed,
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}, nil
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}
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// RunByTaskID 创建任务后立即异步尝试执行当前任务：
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// - 只定向抢占当前 taskId 对应的 pending 任务
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// - 若任务已被其它 worker 抢走/已不在 pending，则直接返回
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func (w *asyncWorker) RunByTaskID(ctx context.Context, taskID string, req *dto.CreateTaskReq) error {
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task, err := dao.Task.ClaimPendingByTaskIDGlobal(ctx, taskID)
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if err != nil {
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return err
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}
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if task == nil {
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return nil
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}
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w.handleOne(ctx, task, req)
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return nil
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}
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// handleOne 执行一次完整的任务
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func (w *asyncWorker) handleOne(ctx context.Context, t *entity.AsynchTask, req *dto.CreateTaskReq) {
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payload := util.ParseStoredPayload(t.RequestPayload)
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maxRetry := 0 // 后面从 model 取
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g.Log().Infof(ctx, "[执行任务][开始] taskId=%s model=%s", t.TaskID, t.ModelName)
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// 1) 获取模型配置
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model, err := dao.Model.GetByModelNameForTenant(ctx, t.TenantId, t.ModelName)
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if err != nil || model == nil {
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w.failTask(ctx, t, "模型不存在或未启用")
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return
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}
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maxRetry = model.RetryTimes
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// 2) 分布式并发控制
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semKey := fmt.Sprintf("asynch:sem:%s", t.ModelName)
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maxC := GetRuntimeMaxConcurrency(ctx, t.ModelName, model.MaxConcurrency)
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acquired, err := acquireSemaphore(ctx, semKey, maxC, 3600)
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if err != nil {
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w.failTask(ctx, t, err.Error())
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return
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}
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if !acquired {
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g.Log().Infof(ctx, "[执行任务][排队] 并发已满，放回队列 taskId=%s", t.TaskID)
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_ = w.rollbackToPending(ctx, t.Id)
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return
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}
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defer func() { _ = releaseSemaphore(ctx, semKey) }()
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// 3) request_payload 校验
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if payload == nil {
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w.failTask(ctx, t, "request_payload 为空")
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return
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}
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// 4) 调用模型（不重试，失败直接回调）
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textResult, err := w.callModel(ctx, t, model, payload)
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if err != nil {
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w.failTask(ctx, t, err.Error())
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return
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}
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// 5) 上传 OSS（可重试）
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var oss *gateway.UploadFileResponse
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for attempt := 0; attempt <= maxRetry; attempt++ {
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if attempt > 0 {
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g.Log().Infof(ctx, "[执行任务][重试] OSS上传 第%d/%d次 taskId=%s", attempt, maxRetry, t.TaskID)
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}
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oss, err = w.uploadOSS(ctx, t)
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if err == nil {
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break
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}
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g.Log().Errorf(ctx, "[执行任务][失败] OSS上传失败 taskId=%s attempt=%d/%d err=%v",
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t.TaskID, attempt, maxRetry, err)
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if attempt == maxRetry {
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_ = dao.Task.UpdateFailedKeepTmpGlobal(ctx, t.Id, err.Error())
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w.failTask(ctx, t, fmt.Sprintf("OSS上传重试耗尽: %v", err))
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return
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}
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}
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// 6) 解析校验（可重试，失败重新调模型）
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if req.BuildType == 1 {
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for attempt := 0; attempt <= maxRetry; attempt++ {
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if attempt > 0 {
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g.Log().Infof(ctx, "[执行任务][重试] JSON解析 第%d/%d次 taskId=%s", attempt, maxRetry, t.TaskID)
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}
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err = util.ValidatePromptResult(textResult, model.RequestMapping)
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if err == nil {
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break
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}
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g.Log().Warningf(ctx, "[执行任务][解析失败] taskId=%s attempt=%d/%d err=%v",
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t.TaskID, attempt, maxRetry, err)
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if attempt == maxRetry {
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w.failTask(ctx, t, fmt.Sprintf("JSON解析重试耗尽: %v", err))
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return
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}
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// 重新调模型
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newResult, modelErr := w.callModel(ctx, t, model, payload)
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if modelErr != nil {
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g.Log().Warningf(ctx, "[执行任务][重试] 重新调模型失败 taskId=%s attempt=%d/%d err=%v",
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t.TaskID, attempt, maxRetry, modelErr)
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continue
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}
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textResult = newResult
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}
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}
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// 7) 成功回调
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t.State = 2
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t.OssFile = oss.FileAddressPrefix + oss.FileURL
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t.FileType = oss.FileFormat
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t.TextResult = textResult
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t.FileSize = int64(oss.FileSize)
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t.ExpendTokens = int64(GetExpendTokens(model.ResponseTokenField, textResult))
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if err = dao.Task.UpdateSuccessGlobal(ctx, t); err != nil {
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g.Log().Errorf(ctx, "[执行任务][失败] 更新数据库失败 taskId=%s err=%v", t.TaskID, err)
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return
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}
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ReleaseQueueSlot(ctx, t.ModelName, t.TaskID)
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go gateway.TriggerCallback(context.WithoutCancel(ctx), t)
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if req.EpicycleId != 0 {
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go gateway.TriggerPromptsCallback(context.WithoutCancel(ctx), t, req.EpicycleId)
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}
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g.Log().Infof(ctx, "[执行任务][成功] taskId=%s fileType=%s textLen=%d callbackUrl=%s",
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t.TaskID, oss.FileFormat, len(textResult), t.CallbackURL)
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_ = os.Remove(t.TmpFile)
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}
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// 返回: ossURL(成功时有值), fileType, textResult(失败时是错误信息), retryable(是否可重试)
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// callModel 调用模型 + 检测文件类型 + 保存临时文件
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func (w *asyncWorker) callModel(ctx context.Context, t *entity.AsynchTask, m *entity.AsynchModel, payload map[string]any) (map[string]any, error) {
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var data []byte
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var contentType, ext, textResult string
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var err error
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if t.Phase == 1 && strings.TrimSpace(t.TmpFile) != "" {
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data, err = os.ReadFile(t.TmpFile)
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if err != nil || len(data) == 0 {
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data = nil
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}
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}
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if data == nil {
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_ = dao.Stat.IncRequestCount(ctx, time.Now(), int64(t.TenantId), t.Creator, t.ModelName)
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data, err = InvokeModel(ctx, m, payload, t.ModelKey)
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if err != nil {
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return nil, err
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}
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tmpPath, tmpErr := saveTmpResult(t.TaskID, data, ext)
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if tmpErr == nil && tmpPath != "" {
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t.TmpFile = tmpPath
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t.Phase = 1
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_ = dao.Task.UpdateTmpAfterModelGlobal(ctx, t.Id, tmpPath)
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}
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}
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contentType, ext = util.DetectFileType(data)
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if utf8.Valid(data) && (strings.HasPrefix(contentType, "text/") || contentType == "application/json") {
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textResult = string(data)
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}
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return gjson.New(textResult).Map(), nil
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}
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// uploadOSS 从临时文件上传 OSS
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func (w *asyncWorker) uploadOSS(ctx context.Context, t *entity.AsynchTask) (*gateway.UploadFileResponse, error) {
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data, err := os.ReadFile(t.TmpFile)
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if err != nil {
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return nil, fmt.Errorf("读取临时文件失败: %w", err)
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}
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_, ext := util.DetectFileType(data)
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return gateway.UploadByTask(ctx, data, ext)
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}
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// failTask 任务失败统一处理：更新数据库 + 释放排队 + 回调
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func (w *asyncWorker) failTask(ctx context.Context, t *entity.AsynchTask, errMsg string) {
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t.State = 3
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t.ErrorMsg = errMsg
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_ = dao.Task.UpdateFailedGlobal(ctx, t)
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ReleaseQueueSlot(ctx, t.ModelName, t.TaskID)
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go gateway.TriggerCallback(context.WithoutCancel(ctx), t)
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}
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// saveTmpResult 将模型输出写入临时文件，用于 OSS 上传失败后的“仅重试 OSS”。
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func saveTmpResult(taskID string, data []byte, ext string) (string, error) {
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dir := filepath.Join(os.TempDir(), "model-asynch")
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if err := os.MkdirAll(dir, 0o755); err != nil {
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return "", err
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}
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if ext == "" {
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ext = ".bin"
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}
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if ext[0] != '.' {
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ext = "." + ext
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}
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path := filepath.Join(dir, fmt.Sprintf("%s%s", taskID, ext))
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if err := os.WriteFile(path, data, 0o644); err != nil {
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return "", err
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}
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return path, nil
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}
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func (w *asyncWorker) rollbackToPending(ctx context.Context, id int64) error {
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return dao.Task.RollbackToPendingGlobal(ctx, id)
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}
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// GetExpendTokens 根据映射路径从 result 中提取消耗 token 值
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func GetExpendTokens(responseTokenField string, result map[string]any) int {
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val := gjson.New(result).Get(responseTokenField)
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if val.IsNil() {
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return 0
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}
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return val.Int()
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}
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