sum.golang.org: doesn't response correctly

[ysmood]

What did you do?

curl https://sum.golang.org/lookup/github.com/ysmood/kit@v0.19.2

What did you expect to see?

no error

What did you see instead?

not found: github.com/ysmood/kit@v0.19.2: invalid version: unknown revision v0.19.2

The version tag does exist, you can visit https://github.com/ysmood/kit/tree/v0.19.2 to check it.

If you do curl https://sum.golang.org/lookup/github.com/ysmood/kit@v0.19.1 it will work as expected.

Not sure if it's a bug of sum.golang.org or github.

[hyangah]

@ysmood I guess this is fixed now - the sum.golang.org learned about v0.19.2 on 2020-01-28 8:12 EST (8min after this bug was reported)

Based on the log, {proxy,sum}.golang.org tried to fetch that version 7:42:01 EST, and couldn't find the version from the repo (so, "unknown revision v0.19.2"). This result was cached for some time.
I guess the tagging happened around ~7:42 EST based on the github release page, so there must be a race between release(tagging) and that new tag gets accessible by {proxy,sum}.golang.org.

@heschik @katiehockman

[hyangah]

Actually, 7:42:01 EST was the logging timestamp, and the version fetch attempts were made before then. This is clearly because the request to {proxy,sum}.golang.org was sent too early. We will try to find a way to improve the user experience. For now, please make sure if the tagged version is available in the source - one option I can think of is to utilize GOPRIVATE to bypass {proxy,sum}.golang.org first and verify if the version can be fetched from the source.