Module: LogStash::PluginMixins::Jdbc::Scheduler::JobDecorator

Defined in:
lib/logstash/plugin_mixins/jdbc/scheduler.rb

Instance Method Summary collapse

Instance Method Details

#start_work_thread ⇒ Object 



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# File 'lib/logstash/plugin_mixins/jdbc/scheduler.rb', line 110

def start_work_thread
  prev_thread_count = @scheduler.work_threads.size

  ret = super() # does not return Thread instance in 3.0

  work_threads = @scheduler.work_threads(:__all_no_cache__)
  while prev_thread_count == work_threads.size # very unlikely
    Thread.pass
    work_threads = @scheduler.work_threads(:__all_no_cache__)
  end

  work_thread_name_prefix = @scheduler.work_thread_name_prefix

  work_threads.sort! do |t1, t2|
    if t1[:name].nil?
      t2[:name].nil? ? 0 : +1 # nils at the end
    elsif t2[:name].nil?
      t1[:name].nil? ? 0 : -1
    else
      t1[:name] <=> t2[:name]
    end
  end

  work_threads.each_with_index do |thread, i|
    unless thread[:name]
      thread[:name] = "#{work_thread_name_prefix}#{sprintf('%02i', i)}"
      thread.name = thread[:name] if thread.respond_to?(:name=)
      # e.g. "[oracle]<jdbc_scheduler_worker-00"
    end
  end

  ret
end