prevent crash on non Linux-based OS

[izemlyanskiy]

related to #1786
on the latest version of netty-incubator-transport-native-io_uring class IOUring may throw an exception during initializing.
For example on Mac OS Redis connection doesn't work because of this exception https://github.com/netty/netty-incubator-transport-io_uring/blob/main/src/main/java/io/netty/incubator/channel/uring/Native.java#L277

[QIvan]

hi @mp911de, sorry to bother you. Could you take a look, please?
at the neighbor issue you told

we intend to pick up the latest io_uring version with our next release

this is, probably, the first issue you would meet, if you develop on Mac.
thank you in advance.

[mp911de]

I'm somewhat confused why io_uring specifically causes issues. The native support code looks pretty similar to epoll and kqueue which do not seem to interfere. As a workaround, please do not include io_using when developing on unsupported platforms.

If we want to address the issue we need to make sure that we have a consistent behavior with the other libraries as well.

[QIvan]

thanks, @mp911de for your feedback!
To be honest, I was surprised when I first time saw the code for checking the availability for IO_uring, I expected lettuce would catch any exception or even Throwable, but for some reason, it caught only ClassNotFoundException...
Why? During initialization, everything might happen. I know other libraries throw nothing in static blocks, but, in my opinion, we were just lucky so far.
I can make the same adjustment for other providers if you bless =)

[mp911de]

I was able to reproduce the issue with version 0.0.7. In version 0.0.8 that issue is fixed and handled properly within netty. So all that is left to do is upgrading to 0.0.8.