forgejo/models
Jason Song a627b885c7
Support compression for Actions logs (#31761)
Support compression for Actions logs to save storage space and
bandwidth. Inspired by
https://github.com/go-gitea/gitea/issues/24256#issuecomment-1521153015

The biggest challenge is that the compression format should support
[seekable](https://github.com/facebook/zstd/blob/dev/contrib/seekable_format/zstd_seekable_compression_format.md).
So when users are viewing a part of the log lines, Gitea doesn't need to
download the whole compressed file and decompress it.

That means gzip cannot help here. And I did research, there aren't too
many choices, like bgzip and xz, but I think zstd is the most popular
one. It has an implementation in Golang with
[zstd](https://github.com/klauspost/compress/tree/master/zstd) and
[zstd-seekable-format-go](https://github.com/SaveTheRbtz/zstd-seekable-format-go),
and what is better is that it has good compatibility: a seekable format
zstd file can be read by a regular zstd reader.

This PR introduces a new package `zstd` to combine and wrap the two
packages, to provide a unified and easy-to-use API.

And a new setting `LOG_COMPRESSION` is added to the config, although I
don't see any reason why not to use compression, I think's it's a good
idea to keep the default with `none` to be consistent with old versions.

`LOG_COMPRESSION` takes effect for only new log files, it adds `.zst` as
an extension to the file name, so Gitea can determine if it needs
decompression according to the file name when reading. Old files will
keep the format since it's not worth converting them, as they will be
cleared after #31735.

<img width="541" alt="image"
src="https://github.com/user-attachments/assets/e9598764-a4e0-4b68-8c2b-f769265183c9">

(cherry picked from commit 33cc5837a655ad544b936d4d040ca36d74092588)

Conflicts:
	assets/go-licenses.json
	go.mod
	go.sum
  resolved with make tidy
2024-08-13 06:51:49 +02:00
..
actions Support compression for Actions logs (#31761) 2024-08-13 06:51:49 +02:00
activities
admin
asymkey [CHORE] Remove SSH DSA tests 2024-08-05 20:34:19 +02:00
auth
avatars
db Adjust codespell config + make it fix few typos which sneaked in since addition of codespell support (#4857) 2024-08-08 16:07:35 +00:00
dbfs
fixtures
forgefed
forgejo/semver
forgejo_migrations
git Rename head branch of pull requests when renaming a branch (#31759) 2024-08-04 18:24:10 +02:00
issues Fix null requested_reviewer from API (#31773) 2024-08-13 06:51:49 +02:00
migrations Clear up old Actions logs (#31735) 2024-08-04 18:24:10 +02:00
organization
packages Arch packages implementation (#4785) 2024-08-04 06:16:29 +00:00
perm
project Fix the display of project type for deleted projects (#31732) 2024-08-04 10:14:34 +02:00
pull
quota
repo Remove unused code from models/repos/release.go (#31756) 2024-08-04 18:24:10 +02:00
secret Clarify Actions resources ownership (#31724) 2024-08-04 18:24:10 +02:00
shared/types
system
unit
unittest
user Adjust codespell config + make it fix few typos which sneaked in since addition of codespell support (#4857) 2024-08-08 16:07:35 +00:00
webhook
error.go
fixture_generation.go
fixture_test.go
main_test.go
org.go
org_team.go
org_team_test.go
org_test.go
repo.go
repo_test.go
repo_transfer.go
repo_transfer_test.go