service/library/contentaudit/video_moderation/video_moderation.go

package videomoderation

import (
	"encoding/json"
	"net/http"
	"service/api/consts"
	video_moderation_task_proto "service/api/proto/video_moderation_task/proto"
	"service/bizcommon/util"
	"service/dbstruct"
	"service/library/logger"
	"service/library/mediafiller"
	"time"

	green20220302 "github.com/alibabacloud-go/green-20220302/client"

	teautils "github.com/alibabacloud-go/tea-utils/v2/service"
	"github.com/alibabacloud-go/tea/tea"
	goproto "google.golang.org/protobuf/proto"

	"github.com/gin-gonic/gin"
)

// 刷新批次号
func RefreshBatchId() string {
	batchId := defaultVideoModerationTaskScheduler.batchId
	defaultVideoModerationTaskScheduler.batchId = genereteBatchId()
	return batchId
}

// 视频审核主逻辑
func Run(batchId string) (successNum int, failNum int, err error) {

	// 1.查询该批次所有审核任务
	videoModerationTasks, err := _DefaultVideoModerationTask.OpList(&gin.Context{}, &video_moderation_task_proto.OpListReq{
		BatchId: goproto.String(batchId),
		Status:  goproto.Int64(consts.VideoModeration_Created),
		Sort:    "ct",
	})
	if err != nil {
		logger.Info("_DefaultVideoModerationTask OpList fail: %v", err)
	}

	if len(videoModerationTasks) == 0 {
		return 0, 0, nil
	}

	logger.Info("Video moderation batch started, batchId : %v, task number : %v", batchId, len(videoModerationTasks))

	// 2.创建批量任务控制块，获取待审核的视频及其dataId(视频审核表Id)，将批量任务控制块暂时保存
	btcb, videos, dataIds := createVideoModerationTaskBatchControlBlock(videoModerationTasks)
	btcb.BatchId = batchId
	defaultVideoModerationTaskScheduler.btcbMp[btcb.BatchId] = btcb

	// 3.创建审核请求
	reqs := createVideoModerationRequest(videos, dataIds)

	// 4.调用阿里的服务，接收应答由callback处理
	runtime := &teautils.RuntimeOptions{
		ReadTimeout:    tea.Int(10000),
		ConnectTimeout: tea.Int(10000),
	}
	for i, req := range reqs {
		_result, err := defaultVideoModerationClient.VideoModerationWithOptions(req, runtime)
		handleVideoModerationResponse(_result, err, dataIds[i])
	}

	successNum = len(videoModerationTasks)
	return
}

func createVideoModerationTaskBatchControlBlock(tasks []*dbstruct.VideoModerationTask) (batchTaskCtrlBlock *VideoModerationTaskBatchControlBlock, videos []*dbstruct.MediaComponent, dataIds []string) {
	// 填充媒体，获取url和dataId，创建action信息
	videos = make([]*dbstruct.MediaComponent, 0)
	mediaFillables := make([]mediafiller.MediaFillable, 0)
	dataIds = make([]string, 0)
	batchTaskCtrlBlock = &VideoModerationTaskBatchControlBlock{
		TaskCtrlBlockMap: make(map[string]*VideoModerationTaskControlBlock),
		VidmodId2taskMap: make(map[string]*VideoModerationTaskControlBlock),
		ActionMap:        make(map[string]*VideoModerationAction),
		TaskNum:          int64(len(tasks)),
		FinishedTaskNum:  0,
		Ct:               time.Now().Unix(),
	}

	// 以batchId+视频审核表的Id作为dataId
	for _, task := range tasks {
		tcb := NewVideoModerationTaskControlBlock(task)
		// 未分片
		if task.GetIsFragmented() == 0 {
			videos = append(videos, task.AuditedMedia)
			mediaFillables = append(mediaFillables, task.AuditedMedia)
			dataIds = append(dataIds, task.GetBatchId()+task.GetVideoModerationId())

			batchTaskCtrlBlock.TaskCtrlBlockMap[tcb.VideoModerationTask.GetId()] = tcb
			batchTaskCtrlBlock.VidmodId2taskMap[task.GetVideoModerationId()] = tcb
			batchTaskCtrlBlock.RecordAction(tcb)
		} else { // 已分片
			videoIds := task.AuditedMedia.GetVideoIds()
			videoAuditIds := task.GetVideoModerationFragmentIds()

			batchTaskCtrlBlock.TaskCtrlBlockMap[tcb.VideoModerationTask.GetId()] = tcb
			batchTaskCtrlBlock.RecordAction(tcb)
			for i, videoId := range videoIds {
				video := &dbstruct.MediaComponent{
					VideoIds: util.Int64Slice([]int64{videoId}),
				}
				videos = append(videos, video)
				mediaFillables = append(mediaFillables, video)
				dataIds = append(dataIds, defaultVideoModerationTaskScheduler.batchId+videoAuditIds[i])

				batchTaskCtrlBlock.VidmodId2taskMap[videoAuditIds[i]] = tcb
			}
		}
	}

	mediafiller.FillList(&gin.Context{}, mediaFillables)
	return
}

func createVideoModerationRequest(videos []*dbstruct.MediaComponent, dataIds []string) (requests []*green20220302.VideoModerationRequest) {
	requests = make([]*green20220302.VideoModerationRequest, 0)
	for i, video := range videos {
		serviceParameters, _ := json.Marshal(
			map[string]interface{}{
				"url":      video.Videos[0].Urls[0],
				"dataId":   dataIds[i],
				"callback": _defaultConfig.NotifyUrl,
				"seed":     _defaultConfig.Seed,
			},
		)
		request := &green20220302.VideoModerationRequest{
			Service:           tea.String("videoDetection"),
			ServiceParameters: tea.String(string(serviceParameters)),
		}
		requests = append(requests, request)
	}

	logger.Info("本次打包:%v", requests)
	return
}

func handleVideoModerationResponse(resp *green20220302.VideoModerationResponse, err error, dataId string) {

	logger.Info("Receive the response from VideoModerationResponse: %v", resp.String())

	isSuccess := true
	code := int32(http.StatusOK)
	msg := ""

	// 针对错误和发送失败的情况，写入信息，移交handler处理
	if err != nil {
		if _t, ok := err.(*tea.SDKError); ok {
			logger.Error("VideoModerationWithOptions fail, errinfo: %v", util.DerefString(_t.Data))
			isSuccess = false

			code = http.StatusInternalServerError
			msg = err.Error()
		}
	} else if util.DerefInt32(resp.StatusCode) != http.StatusOK {
		logger.Error("response not success. status: %d", util.DerefInt32(resp.StatusCode))
		isSuccess = false

		code = util.DerefInt32(resp.StatusCode)
		msg = util.DerefString(resp.Body.Message)
	}

	if !isSuccess {
		rErr := handleVideoModerationResultResponseBody(&green20220302.VideoModerationResultResponseBody{
			Code:    goproto.Int32(code),
			Message: goproto.String(msg),
			Data: &green20220302.VideoModerationResultResponseBodyData{
				DataId: goproto.String(dataId),
			},
		})
		if rErr != nil {
			logger.Error("handleVideoModerationResultResponseBody fail, err: %v", rErr)
		}
	}
}