curl - Why is etag "null" from the returned File object when uploading a file?

Question

When I upload a file, I would like to have the etag so I can delete it afterwards. With the current API, the etag always returns null when uploading the file. Is there a way that I can get the etag without making 2 API calls: uploading the file -> get information about the file?

Even the documentation example returns null for the etag: http://developers.box.com/docs/#files-upload-a-file

Thanks.

Answer 1

作为性能优化，Etag 计算与上传响应分开。在计算之前（通常在上传后的 100 毫秒内），我们将其保留为空。

如前所述，您可以在上传完成后不久在 /files/ 端点上调用 GET，并且 eTag 值将在那里。

我们确实计划将 eTag 计算与上传并行移动，并将其包含在对 POST /files/data 调用的响应中，但我们只会在性能是我们认为合理的情况下才会这样做。