Class: Karafka::Fetcher

Inherits:
Object
  • Object
show all
Defined in:
lib/karafka/fetcher.rb

Overview

Note:

Creating multiple fetchers will result in having multiple connections to the same topics, which means that if there are no partitions, it won’t use them.

Class used to run the Karafka consumer and handle shutting down, restarting etc

Instance Method Summary collapse

Instance Method Details

#fetch_loop ⇒ Object

Starts listening on all the listeners asynchronously Fetch loop should never end, which means that we won’t create more actor clusters so we don’t have to terminate them



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# File 'lib/karafka/fetcher.rb', line 9

def fetch_loop
  futures = listeners.map do |listener|
    listener.future.public_send(:fetch_loop, consumer)
  end

  futures.map(&:value)
# If anything crashes here, we need to raise the error and crush the runner because it means
# that something really bad happened
rescue => e
  Karafka.monitor.notice_error(self.class, e)
  Karafka::App.stop!
  raise e
end