Class: Kafkat::Command::ElectLeaders

Inherits:
Base
  • Object
show all
Defined in:
lib/kafkat/command/elect-leaders.rb

Instance Attribute Summary

Attributes inherited from Base

#config

Instance Method Summary collapse

Methods inherited from Base

#admin, #initialize, #kafka_logs, register_as, usage, usages, #zookeeper

Methods included from Logging

#print_err

Methods included from Kafkat::CommandIO

#prompt_and_execute_assignments

Methods included from Formatting

#justify, #print_assignment, #print_assignment_header, #print_broker, #print_broker_header, #print_partition, #print_partition_header, #print_topic, #print_topic_header, #print_topic_name

Constructor Details

This class inherits a constructor from Kafkat::Command::Base

Instance Method Details

#run ⇒ Object 



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# File 'lib/kafkat/command/elect-leaders.rb', line 9

def run
  topic_name = ARGV[0] && ARGV.shift
  topic_names = topic_name && [topic_name]

  topics = zookeeper.get_topics(topic_names)
  partitions = topics.values.map(&:partitions).flatten

  topics_s = topic_name ? "'#{topic_name}'" : "all topics"
  print "This operation elects the preferred replicas for #{topics_s}.\n"
  return unless agree("Proceed (y/n)?")

  result = nil
  begin
    print "\nBeginning.\n"
    result = admin.elect_leaders!(partitions)
    print "Started.\n"
  rescue Interface::Admin::ExecutionFailedError
    print result
  end
end