Class: Smith::Commands::Dump

Inherits:
Smith::CommandBase show all
Defined in:
lib/smith/commands/smithctl/dump.rb

Instance Attribute Summary

Attributes inherited from Smith::CommandBase

#options, #target

Instance Method Summary collapse

Methods inherited from Smith::CommandBase

#banner, #format_help, #initialize, #parse_options

Methods included from Logger

included

Constructor Details

This class inherits a constructor from Smith::CommandBase

Instance Method Details

#dump ⇒ Object 



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# File 'lib/smith/commands/smithctl/dump.rb', line 13

def dump
  case target.size
  when 0
    "No queue specified. Please specify a queue."
  when 1
    queue = target.first
    Messaging::Queue.number_of_messages(queue) do |queue_length|
      Messaging::Receiver.new(queue, :auto_ack => false, :prefetch => 1000, :passive => true) do |receiver|

        count = 0
        t_start = Time.now.to_f

        receiver.on_error do |ch,channel_close|
          raise
          case channel_close.reply_code
          when 404
            responder.succeed("Queue does not exist: #{queue}")
          else
            responder.succeed("Unknown error: #{channel_close.reply_text}")
          end
          Smith.stop
        end

        if queue_length > 0
          EM.add_periodic_timer(1) do
            Messaging::Queue.number_of_messages(queue) do |queue_length|
              if queue_length == 0
                t_end = Time.now.to_f
                if options[:verbose]
                  responder.succeed("dumped #{count} messages in #{t_end - t_start} seconds.")
                else
                  responder.succeed("")
                end
              end
            end
          end

          receiver.subscribe do |payload, r|
            if payload
              EM.next_tick do
                STDOUT.puts MultiJson.dump(payload)
              end
            end
            count += 1
            r.ack(true)
          end
        else
          responder.succeed("No messages on queue: #{queue}")
        end
      end
    end
  else
    "You can only specify one queue at a time"
  end
end

#execute ⇒ Object 



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# File 'lib/smith/commands/smithctl/dump.rb', line 8

def execute
  MultiJson.use(:oj)
  dump
end