That is not yet possible. I plan to add that over the coming winter, unless someone beats me to it.

Is it possible to back with this problem ? Like it was in Influx1 plugin
Ignore All
Send only selected manually pathes.

This option which is now - 'ignore with regexp', i do have to try build one big regexp query:
^(?!electrical|environment).*$ to exclude this pathes from excluded list, when we need only - i.e - 20 pathes to be sent do influx2, from 300 that we have in system, to save a/ space, b/ lifetime of sd card. then 'allow' list would be much better -)

What do you think ?

Certainly doable

@tkurki can we document which is applied first sources or path filtering? Second as an interim I used a regex to create a whitelist. My guess is that filters are applied in sequential order so it's not easy to do complex whitelist filtering. It might be good to add some regex examples into the repo of known working examples.

Filter All Sources Except 0.35 & 0.42
To match all strings except one that starts with "0.35" or "0.42":^(?!(0.35|0.42)).*$

@scurvy-dog an incoming datum is ignored (not written) if the path matches an ignored path OR the source matches an ignored source. It does not matter which is applied first. Or am I missing something here?

Regular expressions are such a complex subject that I am not especially keen to start documenting them. If you can provide a documentation snippet with examples that you'd want to add please do so, I am not strictly against it. But please open another issue, as this is a bit separate from this issue.

btw you can have chatgpt write regexps for you, translating from english to regexp. It will even include an explanation of how it works!

Please see and comment on #66, where I am addressing the need to pick some paths in addition to not writing some.