Bad checksums (invalid format) in streams

[Stéphane Graber]

curl -s https://cloud-images.ubuntu.com/releases/streams/v1/com.ubuntu.cloud:released:download.json | grep " -"

This will show an alarmingly high number of entries such as these:
       "combined_sha256": "3dbfa75b75a6101205d5d63d477808b80ef2f8aff1351a7b715b986f9ece0138 -",
       "combined_rootxz_sha256": "214b2839247c8171ccb5081cad7f55fd07d9a2d150160a2263e6ad615550013f -",

This suggests that those are generated from a call to "sha256sum" where the output isn't parsed to be restricted to its first column.

This was noticed while working on improved error handling in LXD's simplestreams parser.

[Stéphane Graber (stgraber)]

As far as I can tell, this only affects older images, though those images are still published and so their records should be valid.

[Dan Watkins (oddbloke)]

This exists in the .qindex.json files for releases that have already been archived to S3. We've never had to modify content there, so we don't have any tooling to handle it.

We could look in to fixing these during the actual generation of streams.