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serve_upload.go
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/
serve_upload.go
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package server
import (
"database/sql"
"fmt"
"io"
"mime/multipart"
"net/http"
"os"
"strconv"
"strings"
"time"
"github.com/AudiusProject/audius-protocol/mediorum/cidutil"
"github.com/labstack/echo/v4"
"github.com/oklog/ulid/v2"
"golang.org/x/sync/errgroup"
)
var (
filesFormFieldName = "files"
)
func (ss *MediorumServer) serveUploadDetail(c echo.Context) error {
var upload *Upload
err := ss.crud.DB.First(&upload, "id = ?", c.Param("id")).Error
if err != nil {
return echo.NewHTTPError(404, err.Error())
}
if upload.Status == JobStatusError {
return c.JSON(422, upload)
}
return c.JSON(200, upload)
}
func (ss *MediorumServer) serveUploadList(c echo.Context) error {
afterCursor, _ := time.Parse(time.RFC3339Nano, c.QueryParam("after"))
var uploads []Upload
err := ss.crud.DB.
Where("created_at > ?", afterCursor).
Order(`created_at`).Limit(2000).Find(&uploads).Error
if err != nil {
return err
}
return c.JSON(200, uploads)
}
type UpdateUploadBody struct {
PreviewStartSeconds string `json:"previewStartSeconds"`
}
func (ss *MediorumServer) updateUpload(c echo.Context) error {
if !ss.diskHasSpace() {
return c.String(http.StatusServiceUnavailable, "disk is too full to accept new uploads")
}
var upload *Upload
err := ss.crud.DB.First(&upload, "id = ?", c.Param("id")).Error
if err != nil {
return err
}
// Validate signer wallet matches uploader's wallet
signerWallet, ok := c.Get("signer-wallet").(string)
if !ok || signerWallet == "" {
return c.String(http.StatusBadRequest, "error recovering wallet from signature")
}
if !upload.UserWallet.Valid {
return c.String(http.StatusBadRequest, "upload cannot be updated because it does not have an associated user wallet")
}
if !strings.EqualFold(signerWallet, upload.UserWallet.String) {
return c.String(http.StatusUnauthorized, "request signer's wallet does not match uploader's wallet")
}
body := new(UpdateUploadBody)
if err := c.Bind(body); err != nil {
return c.String(http.StatusBadRequest, err.Error())
}
selectedPreview := sql.NullString{Valid: false}
if body.PreviewStartSeconds != "" {
previewStartSeconds, err := strconv.ParseFloat(body.PreviewStartSeconds, 64)
if err != nil {
return c.String(http.StatusBadRequest, "error parsing previewStartSeconds: "+err.Error())
}
selectedPreviewString := fmt.Sprintf("320_preview|%g", previewStartSeconds)
selectedPreview = sql.NullString{
Valid: true,
String: selectedPreviewString,
}
}
// Update supported editable fields
// Do not support deleting previews
if selectedPreview.Valid && selectedPreview != upload.SelectedPreview {
upload.SelectedPreview = selectedPreview
upload.UpdatedAt = time.Now().UTC()
if _, alreadyTranscoded := upload.TranscodeResults[selectedPreview.String]; !alreadyTranscoded {
// Have not transcoded a preview at this start time yet
// Set status to trigger retranscode job
upload.Status = JobStatusRetranscode
}
err = ss.crud.Update(upload)
if err != nil {
ss.logger.Warn("update upload failed", "err", err)
}
}
return c.JSON(200, upload)
}
func (ss *MediorumServer) postUpload(c echo.Context) error {
if !ss.diskHasSpace() {
return c.String(http.StatusServiceUnavailable, "disk is too full to accept new uploads")
}
// Parse X-User-Wallet header
userWalletHeader := c.Request().Header.Get("X-User-Wallet-Addr")
userWallet := sql.NullString{Valid: false}
if userWalletHeader != "" {
userWallet = sql.NullString{
String: userWalletHeader,
Valid: true,
}
}
// Multipart form
form, err := c.MultipartForm()
if err != nil {
return err
}
template := JobTemplate(c.FormValue("template"))
selectedPreview := sql.NullString{Valid: false}
previewStart := c.FormValue("previewStartSeconds")
var placementHosts []string = nil
if v := c.FormValue("placement_hosts"); v != "" {
placementHosts = strings.Split(v, ",")
}
if previewStart != "" {
previewStartSeconds, err := strconv.ParseFloat(previewStart, 64)
if err != nil {
return c.String(http.StatusBadRequest, "error parsing previewStartSeconds: "+err.Error())
}
selectedPreviewString := fmt.Sprintf("320_preview|%g", previewStartSeconds)
selectedPreview = sql.NullString{
Valid: true,
String: selectedPreviewString,
}
}
files := form.File[filesFormFieldName]
defer form.RemoveAll()
// each file:
// - hash contents
// - send to server in hashring for processing
// - some task queue stuff
uploads := make([]*Upload, len(files))
wg, _ := errgroup.WithContext(c.Request().Context())
for idx, formFile := range files {
idx := idx
formFile := formFile
wg.Go(func() error {
now := time.Now().UTC()
upload := &Upload{
ID: ulid.Make().String(),
UserWallet: userWallet,
Status: JobStatusNew,
Template: template,
SelectedPreview: selectedPreview,
CreatedBy: ss.Config.Self.Host,
CreatedAt: now,
UpdatedAt: now,
OrigFileName: formFile.Filename,
TranscodeResults: map[string]string{},
PlacementHosts: placementHosts,
}
uploads[idx] = upload
tmpFile, err := copyUploadToTempFile(formFile)
if err != nil {
upload.Error = err.Error()
return err
}
defer os.Remove(tmpFile.Name())
formFileCID, err := cidutil.ComputeFileCID(tmpFile)
if err != nil {
upload.Error = err.Error()
return err
}
upload.OrigFileCID = formFileCID
// ffprobe:
upload.FFProbe, err = ffprobe(tmpFile.Name())
if err != nil && upload.Template == JobTemplateAudio {
// fail audio upload if ffprobe fails
upload.Error = err.Error()
return err
}
// ffprobe: restore orig filename
upload.FFProbe.Format.Filename = formFile.Filename
upload.Mirrors, err = ss.replicateFileParallel(formFileCID, tmpFile.Name(), placementHosts)
if err != nil {
upload.Error = err.Error()
return err
}
ss.logger.Info("mirrored", "name", formFile.Filename, "uploadID", upload.ID, "cid", formFileCID, "mirrors", upload.Mirrors)
if template == JobTemplateImgSquare || template == JobTemplateImgBackdrop {
upload.TranscodeResults["original.jpg"] = formFileCID
}
return ss.crud.Create(upload)
})
}
status := 200
if err := wg.Wait(); err != nil {
status = 422
}
return c.JSON(status, uploads)
}
func copyUploadToTempFile(file *multipart.FileHeader) (*os.File, error) {
temp, err := os.CreateTemp("", "mediorumUpload")
if err != nil {
return nil, err
}
r, err := file.Open()
if err != nil {
return nil, err
}
defer r.Close()
_, err = io.Copy(temp, r)
if err != nil {
return nil, err
}
temp.Sync()
temp.Seek(0, 0)
return temp, nil
}