495 lines
16 KiB
Go
495 lines
16 KiB
Go
package task
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"os"
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"strings"
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"sync"
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"time"
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"unicode/utf8"
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"model-gateway/common/util"
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"model-gateway/consts/public"
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"model-gateway/dao"
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"model-gateway/model/dto"
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"model-gateway/model/entity"
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"model-gateway/service/gateway"
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"model-gateway/service/queue"
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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/util/gconv"
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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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// handleOne 执行一次完整的任务
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func (w *asyncWorker) handleOne(ctx context.Context, task *entity.AsynchTask, model *entity.AsynchModel, req *dto.CreateTaskReq) {
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body := util.GetModelBody(task.RequestPayload) // 核心请求参数
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maxRetry := model.RetryTimes // 重试次数
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startTime := time.Now()
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g.Log().Infof(ctx, "[执行任务][开始] taskId=%s model=%s", task.TaskID, task.ModelName)
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// 1) 分布式并发控制
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semKey := fmt.Sprintf("asynch:sem:%s", task.ModelName)
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maxC := queue.GetRuntimeMaxConcurrency(ctx, task.ModelName, model.MaxConcurrency)
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acquired, err := queue.AcquireSemaphore(ctx, semKey, maxC, 3600)
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if err != nil {
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task.DurationSeconds = int64(time.Since(startTime).Seconds())
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w.failTask(ctx, task, startTime, 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", task.TaskID)
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_ = w.rollbackToPending(ctx, task.Id)
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return
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}
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defer func() { _ = queue.ReleaseSemaphore(ctx, semKey) }()
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// 2) 调用模型
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switch {
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case model.CallMode != nil && *model.CallMode == public.CallModeStream:
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rawBytes, err := w.callModelStream(ctx, task, model, body)
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if err != nil {
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w.failTask(ctx, task, startTime, err.Error())
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return
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}
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body, err = util.ParseStreamResponse(rawBytes, model.StreamConfig)
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if err != nil {
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w.failTask(ctx, task, startTime, err.Error())
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return
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}
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case model.CallMode != nil && *model.CallMode == public.CallModeAsync:
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body, err = w.callModel(ctx, task, model, body)
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if err != nil {
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w.failTask(ctx, task, startTime, err.Error())
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return
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}
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body, err = util.PullTaskResult(ctx, body, model.QueryConfig, model.HeadMsg)
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if err != nil {
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w.failTask(ctx, task, startTime, err.Error())
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return
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}
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default:
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body, err = w.callModel(ctx, task, model, body)
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if err != nil {
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w.failTask(ctx, task, startTime, err.Error())
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return
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}
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}
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// 3) 保存临时文件
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tmpPath, err := util.SaveTempFileByType(task.TaskID, body, task.TmpFile)
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if err == nil && tmpPath != "" {
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task.TmpFile = tmpPath
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task.Phase = 1
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_ = dao.Task.UpdateTmpAfterModelGlobal(ctx, task.Id, tmpPath)
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}
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// 4) 解析校验 + 响应映射（可重试，失败重新调模型）
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body, err = w.parseAndRetry(ctx, body, task, model, req, maxRetry, startTime)
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if err != nil {
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task.TextResult = body
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w.failTask(ctx, task, startTime, 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, task.TaskID)
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}
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oss, err = w.uploadOSS(ctx, task)
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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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task.TaskID, attempt, maxRetry, err)
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if attempt == maxRetry {
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_ = dao.Task.UpdateFailedKeepTmpGlobal(ctx, task.Id, err.Error())
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w.failTask(ctx, task, startTime, 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) 成功回调
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task.State = 2
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task.DurationSeconds = int64(time.Since(startTime).Seconds())
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task.OssFile = oss.FileAddressPrefix + oss.FileURL
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task.FileType = oss.FileFormat
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task.TextResult = body
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task.FileSize = int64(oss.FileSize)
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if err = dao.Task.UpdateSuccessGlobal(ctx, task); 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", task.TaskID, err)
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return
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}
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queue.ReleaseQueueSlot(ctx, task.ModelName, task.TaskID)
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go gateway.TriggerCallback(context.WithoutCancel(ctx), task)
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if req.EpicycleId != 0 {
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go gateway.TriggerPromptsCallback(context.WithoutCancel(ctx), task, req.EpicycleId)
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}
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g.Log().Infof(ctx, "[执行任务][成功] taskId=%s duration=%ds fileType=%s textLen=%d callbackUrl=%s",
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task.TaskID, task.DurationSeconds, oss.FileFormat, len(body), task.CallbackURL)
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// 7) 删除临时文件
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_ = os.Remove(task.TmpFile)
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}
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// callModelStream 调用模型，返回原始字节（不做响应映射，用于流式输出）
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func (w *asyncWorker) callModelStream(ctx context.Context, task *entity.AsynchTask, model *entity.AsynchModel, body map[string]any) ([]byte, error) {
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var data []byte
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var err error
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if task.Phase == 1 && strings.TrimSpace(task.TmpFile) != "" {
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data, err = os.ReadFile(task.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(task.TenantId), task.Creator, task.ModelName)
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data, err = InvokeModel(ctx, model, body, task.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 := util.SaveTmpResult(task.TaskID, data, "")
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if tmpErr == nil && tmpPath != "" {
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task.TmpFile = tmpPath
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task.Phase = 1
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_ = dao.Task.UpdateTmpAfterModelGlobal(ctx, task.Id, tmpPath)
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}
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}
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return data, nil
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}
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// asyncResult 异步任务结果
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type asyncResult struct {
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result map[string]any
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err error
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}
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// asyncTaskChan 全局异步任务等待通道
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var asyncTaskChan = sync.Map{} // taskID → chan asyncResult
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func (w *asyncWorker) callModelAsync(ctx context.Context, task *entity.AsynchTask, model *entity.AsynchModel, body map[string]any) (map[string]any, error) {
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// 1. 提交异步任务
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body, err := w.callModel(ctx, task, model, body)
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if err != nil {
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return nil, err
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}
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// 2. 拿到 task_id
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taskID := gjson.New(body).Get(model.ResponseBody).String()
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// 3. 创建等待通道
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ch := make(chan asyncResult, 1)
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asyncTaskChan.Store(taskID, ch)
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defer func() {
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asyncTaskChan.Delete(taskID)
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close(ch)
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}()
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// 4. 阻塞等待回调或超时
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timeout := time.Duration(model.TimeoutSeconds) * time.Second
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ctx, cancel := context.WithTimeout(ctx, timeout)
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defer cancel()
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g.Log().Infof(ctx, "[异步任务] 开始等待结果 taskID=%s timeout=%v", taskID, timeout)
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select {
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case res, ok := <-ch:
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if !ok {
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return nil, fmt.Errorf("异步任务通道已关闭: taskID=%s", taskID)
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}
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g.Log().Infof(ctx, "[异步任务] 获取结果成功 taskID=%s", taskID)
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return res.result, res.err
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case <-ctx.Done():
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return nil, fmt.Errorf("异步任务超时: taskID=%s", taskID)
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}
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}
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// NotifyAsyncResult 回调接口调用此方法通知结果
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func NotifyAsyncResult(taskID string, result map[string]any, err error) {
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if ch, ok := asyncTaskChan.Load(taskID); ok {
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ch.(chan asyncResult) <- asyncResult{result: result, err: err}
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}
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}
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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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// 返回: 解析后的响应体, error
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func (w *asyncWorker) callModel(ctx context.Context, task *entity.AsynchTask, model *entity.AsynchModel, body map[string]any) (map[string]any, error) {
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var data []byte
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var err error
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// 1) 如果已有临时文件且 phase=1，直接读取
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if task.Phase == 1 && strings.TrimSpace(task.TmpFile) != "" {
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data, err = os.ReadFile(task.TmpFile)
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if err != nil || len(data) == 0 {
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g.Log().Warningf(ctx, "[callModel] 读取临时文件失败，重新调用模型 taskId=%s err=%v", task.TaskID, err)
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data = nil
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}
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}
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// 2) 没有可用数据，调用模型
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if data == nil {
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_ = dao.Stat.IncRequestCount(ctx, time.Now(), int64(task.TenantId), task.Creator, task.ModelName)
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data, err = InvokeModel(ctx, model, body, task.ModelKey)
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if err != nil {
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return nil, err
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}
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// 3) 检测文件类型，保存临时文件
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_, ext := util.DetectFileType(data)
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tmpPath, tmpErr := util.SaveTmpResult(task.TaskID, data, ext)
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if tmpErr == nil && tmpPath != "" {
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task.TmpFile = tmpPath
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task.Phase = 1
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_ = dao.Task.UpdateTmpAfterModelGlobal(ctx, task.Id, tmpPath)
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}
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}
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// 4) 检测文件类型，提取文本结果
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contentType, _ := util.DetectFileType(data)
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var textResult string
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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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// 5) 非文本内容，返回错误
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if textResult == "" {
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return nil, fmt.Errorf("模型返回非文本内容，contentType=%s", contentType)
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}
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// 6) 解析并返回
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return gjson.New(textResult).Map(), nil
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}
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// parseAndRetry 解析模型返回结果，并重试
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func (w *asyncWorker) parseAndRetry(ctx context.Context, body map[string]any, task *entity.AsynchTask, model *entity.AsynchModel, req *dto.CreateTaskReq, maxRetry int, startTime time.Time) (map[string]any, error) {
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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, task.TaskID)
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}
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// 1) 响应映射
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mapped, err := util.MapResponsePayload(model.ResponseMapping, body)
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if err != nil {
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g.Log().Warningf(ctx, "[执行任务][映射失败] taskId=%s attempt=%d/%d err=%v", task.TaskID, attempt, maxRetry, err)
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if attempt == maxRetry {
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return nil, fmt.Errorf("响应映射重试耗尽: %w", err)
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}
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continue
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}
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// 2) 先存 token 到数据库，防止后续失败丢失
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if tokens, ok := mapped[model.ResponseTokenField]; ok {
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task.ExpendTokens = gconv.Int64(tokens)
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_ = dao.Task.UpdateColumns(ctx, task.Id, entity.AsynchTask{
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ExpendTokens: gconv.Int64(body[model.ResponseTokenField]),
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})
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}
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// 3) 解析 + 校验
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var parsed map[string]any
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switch req.BuildType {
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case public.BuildTypePrompt, public.BuildTypeNode:
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parsed, err = util.ParseAndValidate(mapped, model)
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if err == nil {
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return parsed, nil
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}
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case public.BuildTypeStruct:
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parsed = util.ParseStructResult(mapped, model.ResponseBody)
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return parsed, nil
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default:
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return mapped, nil
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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", task.TaskID, attempt, maxRetry, err)
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if attempt == maxRetry {
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return nil, fmt.Errorf("JSON解析重试耗尽: %w", err)
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}
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// 4) 重新调模型（直接调，不走缓存）
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_ = dao.Task.IncRetryCountGlobal(ctx, task.Id)
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reqBody := util.GetModelBody(task.RequestPayload)
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rawData, callErr := InvokeModel(ctx, model, reqBody, task.ModelKey)
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if callErr != nil {
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g.Log().Warningf(ctx, "[执行任务][重调模型失败] taskId=%s attempt=%d/%d err=%v", task.TaskID, attempt, maxRetry, callErr)
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continue
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}
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// 5) 解析原始响应，覆盖 body 进入下一轮
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var rawResp map[string]any
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if err := json.Unmarshal(rawData, &rawResp); err != nil {
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g.Log().Warningf(ctx, "[执行任务][Unmarshal失败] taskId=%s err=%v", task.TaskID, err)
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continue
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}
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body = rawResp
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}
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return body, nil
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}
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// InvokeModel 调用模型服务，返回二进制结果
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// modelKey 用于覆盖/补充模型配置 head_msg（例如每次请求携带不同的 X-API-Key）
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func InvokeModel(ctx context.Context, model *entity.AsynchModel, body map[string]any, modelKey string) ([]byte, error) {
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// 1）请求参数映射：将标准 payload 按模型配置的 requestMapping 转为模型需要的格式
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//—— 请求映射实际处理为提示词构建请求，因为有附加字段及其他字段的拼接。这里不方便做请求映射
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//mappedPayload := util.ReverseMap(model.RequestMapping, payload)
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// 2）构建请求 URL 和超时
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baseURL := strings.TrimRight(model.BaseURL, "/")
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timeout := time.Duration(model.TimeoutSeconds) * time.Second
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client := &http.Client{Timeout: timeout}
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method := strings.ToUpper(strings.TrimSpace(model.HttpMethod))
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// 3）构建 HTTP 请求
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var req *http.Request
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switch method {
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case http.MethodGet:
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q, err := util.BodyToQuery(body)
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if err != nil {
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return nil, err
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}
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if len(q) > 0 {
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if strings.Contains(baseURL, "?") {
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baseURL = baseURL + "&" + q.Encode()
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} else {
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baseURL = baseURL + "?" + q.Encode()
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}
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}
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req, err = http.NewRequestWithContext(ctx, http.MethodGet, baseURL, nil)
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default:
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bodyBytes, err := json.Marshal(body)
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if err != nil {
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return nil, err
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}
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req, err = http.NewRequestWithContext(ctx, http.MethodPost, baseURL, bytes.NewReader(bodyBytes))
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}
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// 4）注入请求头：先模型静态配置，再动态 modelKey（后者可覆盖前者）
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for hk, hv := range util.ParseHeadMsgHeaders(model.HeadMsg) {
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req.Header.Set(hk, hv)
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}
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if modelKey != "" {
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req.Header.Set("Authorization", "Bearer "+modelKey)
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}
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if method != http.MethodGet {
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req.Header.Set("Content-Type", "application/json")
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}
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// 5）发送请求
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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// 6）读取响应体
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b, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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// 7）检查 HTTP 状态码
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if resp.StatusCode < 200 || resp.StatusCode >= 300 {
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msg := string(b)
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return nil, fmt.Errorf("模型服务返回非2xx: %d, body=%s", resp.StatusCode, msg)
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}
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return b, nil
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}
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// // InvokeModel 调用模型服务，返回二进制结果
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//
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// func InvokeModel(ctx context.Context, m *entity.AsynchModel, payload any, modelKey string) ([]byte, error) {
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// if m == nil || m.BaseURL == "" {
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// return nil, fmt.Errorf("模型配置不完整")
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// }
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// // 请求参数映射
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// mappedPayload, err := mapRequestPayload(m.RequestMapping, payload)
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// if err != nil {
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// return nil, fmt.Errorf("请求参数映射失败: %w", err)
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// }
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// // 合并请求头
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// headers := util.ForwardHeaders(ctx)
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// for hk, hv := range parseHeadMsgHeaders(m.HeadMsg) {
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// headers[hk] = hv
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// }
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// for hk, hv := range parseHeadMsgHeaders(modelKey) {
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// headers[hk] = hv
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// }
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//
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// // 设置超时
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// timeout := time.Duration(m.TimeoutSeconds) * time.Second
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// if timeout <= 0 {
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// timeout = 600 * time.Second
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// }
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// ctx, cancel := context.WithTimeout(ctx, timeout)
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// defer cancel()
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//
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// invokeUrl := strings.TrimRight(m.BaseURL, "/")
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// method := strings.ToUpper(strings.TrimSpace(m.HttpMethod))
|
||
// if method == "" {
|
||
// method = http.MethodPost
|
||
// }
|
||
//
|
||
// var respBytes []byte
|
||
//
|
||
// switch method {
|
||
// case http.MethodGet:
|
||
// err = commonHttp.Get(ctx, invokeUrl, headers, &respBytes, mappedPayload)
|
||
// default:
|
||
// err = commonHttp.Post(ctx, invokeUrl, headers, &respBytes, mappedPayload)
|
||
// }
|
||
// if err != nil {
|
||
// return nil, err
|
||
// }
|
||
// // 响应参数映射
|
||
// mappedResponse, err := mapResponsePayload(m.ResponseMapping, respBytes)
|
||
// if err != nil {
|
||
// g.Log().Warningf(ctx, "响应参数映射失败: %v，返回原始数据", err)
|
||
// return respBytes, nil
|
||
// }
|
||
// return mappedResponse, nil
|
||
// }
|
||
|
||
// uploadOSS 从临时文件上传 OSS
|
||
func (w *asyncWorker) uploadOSS(ctx context.Context, t *entity.AsynchTask) (*gateway.UploadFileResponse, error) {
|
||
data, err := os.ReadFile(t.TmpFile)
|
||
if err != nil {
|
||
return nil, fmt.Errorf("读取临时文件失败: %w", err)
|
||
}
|
||
_, ext := util.DetectFileType(data)
|
||
return gateway.UploadByTask(ctx, data, ext)
|
||
}
|
||
|
||
// failTask 任务失败统一处理：更新数据库 + 释放排队 + 回调
|
||
func (w *asyncWorker) failTask(ctx context.Context, t *entity.AsynchTask, startTime time.Time, errMsg string) {
|
||
t.State = 3
|
||
t.ErrorMsg = errMsg
|
||
t.DurationSeconds = int64(time.Since(startTime).Seconds())
|
||
_ = dao.Task.UpdateFailedGlobal(ctx, t)
|
||
queue.ReleaseQueueSlot(ctx, t.ModelName, t.TaskID)
|
||
go gateway.TriggerCallback(context.WithoutCancel(ctx), t)
|
||
}
|
||
|
||
// rollbackToPending 恢复任务状态为 PENDING
|
||
func (w *asyncWorker) rollbackToPending(ctx context.Context, id int64) error {
|
||
return dao.Task.RollbackToPendingGlobal(ctx, id)
|
||
}
|