Make cqlsh work with unix domain sockets

[sylwiaszunejko]

In order to use unix domain sockets with python-driver, we have to wrap hostname in UnixSocketEndPoint (like in this example: http://opensource.docs.scylladb.com/master/operating-scylla/admin-tools/maintenance-socket.html#with-python-driver).

This PR adds checking if hostname is a socket, and if so, it adds wrapping hostname into UnixSocketEndPoint.

I tested it locally using python-driver.

To work correctly it needs 3.26.5 python-driver release (there was no support for unix domain sockets in WhiteListRoundRobinPolicy before).

Fixes: scylladb/scylladb#16489

[fruch]

Lgtm

But I think we need to wait for
scylladb/python-driver#287

To be merged and released

And then update that cqlsh is dependent on that (and update the requirements.txt, cause this what would be packged by scylla core)

[kbr-scylla]

But I think we need to wait for
scylladb/python-driver#287

To be merged and released

@fruch @avelanarius that fix was merged -- will we get a driver release soon?

(Sorry for asking for so many driver releases recently... I hope it's not too much of a PITA)

[avelanarius]

@kbr-scylla @Lorak-mmk will release today.

[avelanarius]

Release in progress https://github.com/scylladb/python-driver/actions/runs/7555507244/job/20570631061

[kbr-scylla]

Nice, thanks.

[avelanarius]

@sylwiaszunejko Python Driver is now released, you can bump the version in

scylla-cqlsh/requirements.txt

Line 1 in 8bd3367

scylla-driver==3.26.3

[sylwiaszunejko]

I updated the python-driver version in requirements.txt.

[fruch]

Lgtm

[fruch]

Now we need to update the cqlsh submodule in scylla core to take this change

[kbr-scylla]

Now we need to update the cqlsh submodule in scylla core to take this change

Queued scylladb/scylladb@cc03949

Do we have some test suite for cqlsh? It would be good to have a regression test

[fruch]

Now we need to update the cqlsh submodule in scylla core to take this change

Queued scylladb/scylladb@cc03949

Do we have some test suite for cqlsh? It would be good to have a regression test

It has its own tests/CI, and quite good coverage in dtest gating (not the newly introduced feature, but that should be easy to add)