249 lines
6.4 KiB
Go
249 lines
6.4 KiB
Go
package jobs
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import (
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"context"
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"crypto/md5"
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"encoding/hex"
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"errors"
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"io"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strings"
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"time"
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"quyun/v2/app/jobs/args"
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"quyun/v2/database/fields"
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"quyun/v2/database/models"
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"quyun/v2/pkg/consts"
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"quyun/v2/providers/storage"
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"github.com/riverqueue/river"
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log "github.com/sirupsen/logrus"
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"go.ipao.vip/gen/types"
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"gorm.io/gorm"
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)
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// @provider(job)
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type MediaProcessWorker struct {
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river.WorkerDefaults[args.MediaAssetProcessJob]
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storage *storage.Storage
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}
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func (j *MediaProcessWorker) Work(ctx context.Context, job *river.Job[args.MediaAssetProcessJob]) error {
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arg := job.Args
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// 1. 获取媒体资源，保证租户隔离。
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tbl, q := models.MediaAssetQuery.QueryContext(ctx)
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q = q.Where(tbl.ID.Eq(arg.AssetID))
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if arg.TenantID > 0 {
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q = q.Where(tbl.TenantID.Eq(arg.TenantID))
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}
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asset, err := q.First()
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if err != nil {
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if errors.Is(err, gorm.ErrRecordNotFound) {
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log.Warnf("media asset not found: %d", arg.AssetID)
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return river.JobCancel(err)
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}
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return err
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}
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if asset.Status == consts.MediaAssetStatusReady || asset.Status == consts.MediaAssetStatusDeleted {
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return nil
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}
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// 2. 更新状态为处理中，标识处理已开始。
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if err := models.MediaAssetQuery.WithContext(ctx).
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UnderlyingDB().
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Model(&models.MediaAsset{}).
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Where("id = ?", asset.ID).
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Updates(map[string]any{
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"status": consts.MediaAssetStatusProcessing,
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"updated_at": time.Now(),
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}).Error; err != nil {
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return err
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}
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finalStatus := consts.MediaAssetStatusReady
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// 3. 处理视频（FFmpeg，未安装时走模拟流程）。
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if asset.Type == consts.MediaAssetTypeVideo {
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if strings.ToLower(asset.Provider) == "local" {
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localPath := j.storage.Config.LocalPath
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if localPath == "" {
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localPath = "./storage"
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}
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inputFile := filepath.Join(localPath, asset.ObjectKey)
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if _, err := os.Stat(inputFile); err != nil {
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log.Errorf("media file missing: %s, err=%v", inputFile, err)
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finalStatus = consts.MediaAssetStatusFailed
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} else if _, err := exec.LookPath("ffmpeg"); err != nil {
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log.Warn("ffmpeg not found, skipping real transcoding")
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} else {
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outputDir := filepath.Dir(inputFile)
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coverTempKey := asset.ObjectKey + ".jpg"
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coverFile := filepath.Join(outputDir, filepath.Base(coverTempKey))
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// 生成封面，作为后续管线的占位输出。
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cmd := exec.CommandContext(
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ctx,
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"ffmpeg",
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"-y",
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"-i",
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inputFile,
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"-ss",
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"00:00:00.000",
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"-vframes",
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"1",
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"-vf",
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"format=yuv420p",
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"-update",
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"1",
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coverFile,
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)
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if out, err := cmd.CombinedOutput(); err != nil {
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log.Errorf("ffmpeg failed: %s, output: %s", err, string(out))
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finalStatus = consts.MediaAssetStatusFailed
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} else {
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log.Infof("Generated cover: %s", coverFile)
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// 生成封面资产记录，便于后台可追踪产物。
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if err := j.registerCoverAsset(ctx, asset, coverFile); err != nil {
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log.Errorf("register cover failed: %s", err)
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finalStatus = consts.MediaAssetStatusFailed
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}
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}
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}
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} else {
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log.Warn("non-local provider, skipping ffmpeg processing")
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}
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}
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// 4. 更新最终状态。
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if err := models.MediaAssetQuery.WithContext(ctx).
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UnderlyingDB().
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Model(&models.MediaAsset{}).
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Where("id = ?", asset.ID).
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Updates(map[string]any{
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"status": finalStatus,
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"updated_at": time.Now(),
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}).Error; err != nil {
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return err
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}
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return nil
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}
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func (j *MediaProcessWorker) registerCoverAsset(ctx context.Context, asset *models.MediaAsset, coverFile string) error {
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if asset == nil || coverFile == "" {
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return nil
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}
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if _, err := os.Stat(coverFile); err != nil {
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return err
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}
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// 已存在封面派生资产时直接跳过。
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tbl, q := models.MediaAssetQuery.QueryContext(ctx)
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existing, err := q.Where(
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tbl.SourceAssetID.Eq(asset.ID),
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tbl.Type.Eq(consts.MediaAssetTypeImage),
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).First()
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if err == nil && existing != nil {
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return nil
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}
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if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
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return err
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}
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hash, size, err := fileMD5(coverFile)
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if err != nil {
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return err
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}
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var tenant *models.Tenant
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if asset.TenantID > 0 {
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tenant, err = models.TenantQuery.WithContext(ctx).
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Where(models.TenantQuery.ID.Eq(asset.TenantID)).
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First()
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if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
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return err
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}
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}
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filename := asset.Meta.Data().Filename
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if filename == "" {
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filename = filepath.Base(asset.ObjectKey)
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}
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coverName := coverFilename(filename)
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objectKey := buildObjectKey(tenant, hash, coverName)
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// 本地存储将文件移动到目标 objectKey 位置，保持路径规范。
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localPath := j.storage.Config.LocalPath
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if localPath == "" {
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localPath = "./storage"
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}
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dstPath := filepath.Join(localPath, filepath.FromSlash(objectKey))
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if coverFile != dstPath {
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if err := os.MkdirAll(filepath.Dir(dstPath), 0o755); err != nil {
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return err
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}
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if _, err := os.Stat(dstPath); err == nil {
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_ = os.Remove(coverFile)
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} else if err := os.Rename(coverFile, dstPath); err != nil {
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return err
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}
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}
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coverAsset := &models.MediaAsset{
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TenantID: asset.TenantID,
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UserID: asset.UserID,
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Type: consts.MediaAssetTypeImage,
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Status: consts.MediaAssetStatusReady,
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Provider: asset.Provider,
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Bucket: asset.Bucket,
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ObjectKey: objectKey,
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Hash: hash,
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Variant: consts.MediaAssetVariantMain,
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SourceAssetID: asset.ID,
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Meta: types.NewJSONType(fields.MediaAssetMeta{
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Filename: coverName,
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Size: size,
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}),
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}
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if err := models.MediaAssetQuery.WithContext(ctx).Create(coverAsset); err != nil {
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return err
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}
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return nil
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}
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func coverFilename(filename string) string {
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base := strings.TrimSuffix(filename, filepath.Ext(filename))
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if base == "" {
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base = "cover"
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}
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return base + "_cover.jpg"
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}
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func buildObjectKey(tenant *models.Tenant, hash, filename string) string {
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// 按租户维度组织对象路径：quyun/<tenant_uuid>/<hash>.<ext>
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tenantUUID := "public"
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if tenant != nil && tenant.UUID.String() != "" {
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tenantUUID = tenant.UUID.String()
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}
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ext := strings.ToLower(filepath.Ext(filename))
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return path.Join("quyun", tenantUUID, hash+ext)
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}
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func fileMD5(filename string) (string, int64, error) {
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f, err := os.Open(filename)
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if err != nil {
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return "", 0, err
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}
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defer f.Close()
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h := md5.New()
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size, err := io.Copy(h, f)
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if err != nil {
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return "", size, err
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}
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return hex.EncodeToString(h.Sum(nil)), size, nil
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}
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