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feat(sessions): add support for remote redis session store (#3345)

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Description
====================
zot currently stores session cookies in memory or in a local directory.
For cases where the session cookies should be independent of the
instance where they were created such as multiple instances of zot, or a
fully stateless zot instance, there is a need to support a remote
session storage.
This change adds support for using Redis and Redis-compatible services as a
remote session driver as well as introduces a new configuration option
for it.

What has changed
=======================
- New config added under Auth config to specify configuration for
  the session driver.
- Examples README updated with details of the new Auth config.
- The config supports only 2 drivers in this change - local and redis
- Using the local driver is backwards compatible and behaves the same
  way that zot currently works for local session storage.
- Omitting this config does not result in an error. In this case, zot
  behaves as it normally does for local session storage.
- When configured, zot can use redis for persisting cookie
  information for zot UI.
- The cookie in the store is deleted on logout or after the max
  expiry time for the cookie.
- Configuration for the redis session driver accepts the same configuration
  values as that of the remote meta cache.
- A separate connection is established for the session driver. An
  existing connection for meta cache will not be re-used for the
  session driver.
- A key prefix is configurable for the redis session driver. The value will be
  converted into a string for use. If no value is provided, a default
  prefix of "zotsession" will be used.
- Redis sessions does not support hash key or encryption in this change.
- New BATS test added to verify zot behavior with Redis session store.
- Github workflow updated to install valkey-tools dependency for BATS.

Signed-off-by: Vishwas Rajashekar <dev@vrajashkr.com>
This commit is contained in:
Vishwas Rajashekar
2025-10-05 12:43:38 +05:30
committed by GitHub
parent cbbd39745c
commit 86af38abfc
16 changed files with 1342 additions and 48 deletions
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@@ -1873,6 +1873,8 @@ github.com/prometheus/procfs v0.16.1 h1:hZ15bTNuirocR6u0JZ6BAHHmwS1p8B4P6MRqxtzM
github.com/prometheus/procfs v0.16.1/go.mod h1:teAbpZRB1iIAJYREa1LsoWUXykVXA1KlTmWl8x/U+Is=
github.com/protocolbuffers/txtpbfmt v0.0.0-20241112170944-20d2c9ebc01d h1:HWfigq7lB31IeJL8iy7jkUmU/PG1Sr8jVGhS749dbUA=
github.com/protocolbuffers/txtpbfmt v0.0.0-20241112170944-20d2c9ebc01d/go.mod h1:jgxiZysxFPM+iWKwQwPR+y+Jvo54ARd4EisXxKYpB5c=
github.com/rbcervilla/redisstore/v9 v9.0.0 h1:wOPbBaydbdxzi1gTafDftCI/Z7vnsXw0QDPCuhiMG0g=
github.com/rbcervilla/redisstore/v9 v9.0.0/go.mod h1:q/acLpoKkTZzIsBYt0R4THDnf8W/BH6GjQYvxDSSfdI=
github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 h1:N/ElC8H3+5XpJzTSTfLsJV/mx9Q9g7kxmchpfZyxgzM=
github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
github.com/redis/go-redis/extra/rediscmd/v9 v9.0.5 h1:EaDatTxkdHG+U3Bk4EUr+DZ7fOGwTfezUiUJMaIcaho=