List topics available on nsqlookupds

[stuart-warren]

Add ability to fetch the list of existing topics using the /topics endpoint on the nsqlookupds

I want to write a Logstash (https://www.elastic.co/products/logstash) input plugin to pull logs from NSQ.
My current plan is to allow the user to specify a regex of topics to pull logs from, but to do that I need a list of topics...

Happy to have a crack at adding this to Krakow::Discovery

[mschneider82]

Hi Stuart- i already wrote a simple logstash nsq plugin, feel free to fork and enhance, unfortunately the processing speed with nsq-ruby was nearly 10x better than krakow with the same max_in_flight counts.

both versions(krakow and nsq-ruby) are online:
https://github.com/mschneider82?tab=repositories