Add FunctionStats to rueidiscompat

[rueian]

The rueidiscompat sub-module aims to provide the same interface as go-redis as closely as possible while utilizing rueidis under the hood.

go-redis has the following interface:

https://github.com/redis/go-redis/blob/40e049e67a4cce574f7972b53b1a8172bbe45d5e/scripting_commands.go#L24
type ScriptingFunctionsCmdable interface {
	...
	FunctionStats(ctx context.Context) *FunctionStatsCmd
	...
}

while in rueidiscompat, it is currently not implemented:

rueidis/rueidiscompat/adapter.go

Line 370 in 20fc2cd

// TODO FunctionStats(ctx context.Context) *FunctionStatsCmd

Therefore, we should catch up go-redis by implementing the function to the rueidiscompat.Compat and the rueidiscompat.Pipeline struct.

Take the below ACLDryRun as an example to implement the new function in rueidiscompat that provides the same interface as go-redis:

rueidis/rueidiscompat/adapter.go

Lines 3199 to 3203 in 93e9af3

	func (c *Compat) ACLDryRun(ctx context.Context, username string, command ...any) *StringCmd {
	cmd := c.client.B().AclDryrun().Username(username).Command(command[0].(string)).Arg(argsToSlice(command[1:])...).Build()
	resp := c.client.Do(ctx, cmd)
	return newStringCmd(resp)
	}

rueidis/rueidiscompat/pipeline.go

Lines 2086 to 2090 in 93e9af3

	func (c *Pipeline) ACLDryRun(ctx context.Context, username string, command ...any) *StringCmd {
	ret := c.comp.ACLDryRun(ctx, username, command...)
	c.rets = append(c.rets, ret)
	return ret
	}

[Yusin0903]

Can I try this ?

[rueian]

Hi @Yusin0903, thank you! Let me know if you have any problems during the work.