Build: Print version (hash) tag whenever app starts

[Cahb]

Sample output:

docker logs openlan_cgw 
[2024-07-01T09:55:30Z INFO  ucentral_cgw] Starting CGW application, rev tag: 5149edb
[2024-07-01T09:55:30Z INFO  ucentral_cgw] (1048576, 1048576)
[2024-07-01T09:55:30Z INFO  ucentral_cgw] (1048576, 1048576)

...

docker logs openlan_cgw 
[2024-07-01T09:58:01Z INFO  ucentral_cgw] Starting CGW application, rev tag: 5149edb-dirty
[2024-07-01T09:58:01Z INFO  ucentral_cgw] (1048576, 1048576)
[2024-07-01T09:58:01Z INFO  ucentral_cgw] (1048576, 1048576)

[Cahb]

Don't mind the pushes;
Just poking around the github actions to find the right flow;

[Cahb]

@carsten989 i've added you to the reviewer list to only address the issue i'm having with CI integration: it seems like i cannot simply pass for docker action, as this action is included furthermore the action hierarchy;

Please note, that this PR currently doesn't work OK with CI, so it's not to be merged yet;

NOTE: sample of warning that pops-up

Warning: Unexpected input(s) 'build-args', valid inputs are ['image_name', 'registry', 'registry_user', 'registry_password', 'checkout_fetch_depth']

[carsten989]

So it looks like setting CGW_WSS_THREAD_NUM is no longer supported?
I would have taken care of the CI part of this at least on that side, but thanks!
Please also take a look at https://reproducible-builds.org/docs/source-date-epoch/
See the Dockerfile part. Just adding ARG SOURCE_DATE_EPOCH high up in the target copying portion, should allow you to reference that env var.

[Cahb]

@carsten989

So it looks like setting CGW_WSS_THREAD_NUM is no longer supported?

The confusion basically comes from the following:
Code uses the DEFAULT_WSS_THREAD_NUM:

191         let wss_t_num: usize = match env::var("DEFAULT_WSS_THREAD_NUM") {        

The script we used to run deployment manually through the make run actually pointed to enviroment variable:

-       -e CGW_WSS_THREAD_NUM      \

So i changed it to export right env:

+       -e DEFAULT_WSS_THREAD_NUM  \

(Because application expects exact name);

The pod config should be the same, i've just check it's the <DEFAULT_WSS_THREAD_NUM=8> env var that gets exported;

Or are you using the helper script as well, sorry? Did i brake your deployment?

[Cahb]

I would have taken care of the CI part of this at least on that side, but thanks!
Please also take a look at https://reproducible-builds.org/docs/source-date-epoch/
See the Dockerfile part. Just adding ARG SOURCE_DATE_EPOCH high up in the target copying portion, should allow you to reference that env var.

So, the problem is the changes in this pr still do not work and i think the doc you're referencing is purely for TS, righ?
Because i'd love to see the hash inside the CGW app;

[Cahb]

@carsten989 maybe we can jump into slack to discuss / find a potential fix or way-to-go for this issue (the docker build-args one)?