add IsBusyGroup() to rueidis.RedisError

[jhq0113]

When executing the XGROUP CREATE <key> <group> <id> command, if group already exists, Redis will return BUSYGROUP..., Generally, the caller BUSYGROUP needs to distinguish from other errors, and adding this judgment can facilitate differentiation from other errors

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.71%. Comparing base (ded6852) to head (c9e6d06).

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #485      +/-   ##
==========================================
- Coverage   95.72%   95.71%   -0.01%     
==========================================
  Files          77       77              
  Lines       33084    33091       +7     
==========================================
+ Hits        31669    31673       +4     
- Misses       1210     1211       +1     
- Partials      205      207       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[rueian]

Cool! Thanks @jhq0113!

Would you like to also add a global helper IsRedisBusyGroup? I guess that could help further streamline the developer experience:

err := client.Do(context.Background(), client.B().XgroupCreate().Key("").Group("").Id("").Build()).Error()
if rueidis.IsRedisBusyGroup(err) {
	// ...
}

[jhq0113]

Yes, I do