Add white list of consumer groups

[seglo]

Allow user to only report certain groups that match a list of regex.

[seglo]

An array of RegEx patterns to match polled consumer group topic partitions against. If any of the patterns match then report that topics offsets.

When configuration is undefined or list is empty. Report all topics.

Use cases

Report all topics

whitelist = []

Report only topics with the suffix .xyzcorp-topics.

whitelist = [
  ".*\.xyzcorp-topics"
]

[gholickar]

As discussed over email, I would like to have this feature implemented so we can filter consumer topic in our production environment that contains lot of Spark consumer topic names that are not interest to us. George

[graphex]

A blacklist in addition to the whitelist would also be useful for ignoring console consumers, for example. I might make another issue for black+whitelists for topic names, which tends to be useful when using kafka streams.

[seglo]

That's true. I'm sort of on the fence vs white or black lists. Could a whitelist with a regex satisfy the use case you describe?

[seglo]

@gholickar Hi George. I've implemented this in 0.5.2. Check it out and LMK!