ProcessPending set different destination per file

[james-hinton]

Describe the bug
I want to be able to set a different destination for each file. I have to add filename to the destination URL (Azure blob).

Expected behavior
That it sends the file individually, but it processes every file with the same destination URL and ends up overwriting all the files with the same file

Versions
1.1.0

Code
Sorry I really struggle to format this, it just doesnt want to format

      for (let i = 0; i < toDownload.length; i++) {
        const destination = {
          url:
            "https://#.blob.core.windows.net/files/" +
            toDownload[i].path +
            "?sv=2021-06-08&ss=b&srt=sco&sp=rwdlactfx&se=2022-10-21T01:04:32Z&st=2022-09-20T17:04:32Z&spr=https&sig=#",
        };

        processPending({
          destination,
          fileFilter: (file) => file.item === toDownload[i].file.item,
          headers: {
            "x-ms-blob-type": "BlockBlob",
          },
          grouped: false,
        });
      }

[yoavniran]

hey @james-hinton
processPending isnt meant for individual handling of options.

What you're looking for is: useRequestPreSend
it allows overriding options per file just before its uploaded.

This guide should help get you started with that.

Let me know if you have questions. In the meantime ill convert this into a discussion.

[james-hinton]

Thanks for pointing me in the right direction, by changing the batch size to one I was then able to set the unique destination per file using that hook.

  useRequestPreSend(async ({ items, options }) => {
    const filename = items[0].file.name;

    const sasToken = await axios.get(
      `${process.env.REACT_APP_PORTAL_BACKEND_URL}/file/sas_token/${filename}/`
    );

    return Promise.resolve({
      options: {
        destination: {
          url: sasToken.data.endpoint,
        },
        method: "PUT",
      },
    });
  });

[woodybriggs]

How to do this while using a batch size greater than 1? To me it would make more sense to return an array of options

[yoavniran]

@woodybriggs

batching means sending multiple files in one request.
Only one set of options can be used per request.
So I dont see what would an array of options do.

If you want to send information about the files, you can add an array param that will be turned into a comma delimited string that you can parse on your server:

options: {
   ids: [1,2,3]
}