How to import images from tar using stream

[x1a0b0]

bollard/src/image.rs

Line 1351 in d258ede

/// let bytes = byte_stream.next().await.unwrap().unwrap();

The issue: byte_stream.next()only read the first frame(the default capacity is 8k), not the complete content for large tar file.

Think aloud, import_image use Bytes as root_fs's type, which means we should read the tar file into memory one time, If the file is several gigabytes, this will be annoying.

[fussybeaver]

Yes, I believe it's bounded by 8k due to tokio's default Framing configuration ... happy to take any PR adjustments to make this better.

Re. your second point, it got changed to Bytes because Hyper changed Body to become less dependent on Tokio. Is there an obvious streaming byte implementation to use here, one that also doesn't use Tokio ?

[x1a0b0]

Maybe just use http-body-util's StreamBody