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Russ Cox 84e091eef0 cmd/go: record origin metadata during module download
This change adds an "Origin" JSON key to the output of
go list -json -m and go mod download -json. The associated value is a
JSON object with metadata about the source control system. For Git,
that metadata is sufficient to evaluate whether the remote server has
changed in any interesting way that might invalidate the cached data.
In most cases, it will not have, and a fetch could then avoid
downloading a full repo from the server.

This origin metadata is also now recorded in the .info file for a
given module@version, for informational and debugging purposes.

This change only adds the metadata. It does not use it to optimize
away unnecessary git fetch operations. (That's the next change.)

For #53644.

Change-Id: I4a1712a2386d1d8ab4e02ffdf0f72ba75d556115
Reviewed-on: https://go-review.googlesource.com/c/go/+/411397
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2022-07-05 12:57:42 +00:00
.github .github: remove duplicate security link 2022-01-07 17:55:09 +00:00
api debug/pe: add IMAGE_FILE_MACHINE_LOONGARCH{64,32} 2022-06-29 22:29:34 +00:00
doc spec: retitle section on "Assignments" to "Assignment statements" 2022-06-30 00:58:41 +00:00
lib/time lib/time, time/tzdata: update to 2022a 2022-05-31 08:53:53 +00:00
misc cmd/internal/obj/arm64: save LR and SP in one instruction for small frames 2022-06-29 22:26:58 +00:00
src cmd/go: record origin metadata during module download 2022-07-05 12:57:42 +00:00
test cmd/compile: fix prove pass when upper condition is <= maxint 2022-06-30 15:11:19 +00:00
.gitattributes
.gitignore internal/buildcfg: move build configuration out of cmd/internal/objabi 2021-04-16 19:20:53 +00:00
AUTHORS A+C: add Jinzhu Zhang 2022-05-08 17:28:26 +00:00
CONTRIBUTING.md
CONTRIBUTORS A+C: add Jinzhu Zhang 2022-05-08 17:28:26 +00:00
LICENSE
PATENTS
README.md README.md: update wiki link 2022-04-26 16:21:18 +00:00
SECURITY.md SECURITY.md: replace golang.org with go.dev 2022-04-26 19:59:47 +00:00
codereview.cfg

README.md

The Go Programming Language

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