Class: JobDispatch::Status

Inherits:
Object
  • Object
show all
Defined in:
lib/job_dispatch/status.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(connect_address) ⇒ Status

Returns a new instance of Status.



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# File 'lib/job_dispatch/status.rb', line 9

def initialize(connect_address)
  @connect_address = connect_address
end

Instance Attribute Details

#socket ⇒ Object (readonly)

Returns the value of attribute socket.



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# File 'lib/job_dispatch/status.rb', line 6

def socket
  @socket
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/job_dispatch/status.rb', line 13

def connect
  if @socket.nil?
    @socket = JobDispatch.context.socket(ZMQ::REQ)
    @socket.connect(@connect_address)
  end
end

#disconnect ⇒ Object 



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# File 'lib/job_dispatch/status.rb', line 20

def disconnect
  @socket.close
  @socket = nil
end

#fetch ⇒ Object 



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# File 'lib/job_dispatch/status.rb', line 25

def fetch
  @socket.send(JSON.dump({command:'status'}))
  json = @socket.recv
  @status = JSON.parse(json).with_indifferent_access
  @time = Time.now
end

#print ⇒ Object 



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# File 'lib/job_dispatch/status.rb', line 32

def print
  puts "Job Dispatcher status: #{@status[:status]} at #{@time}"
  puts ""

  table = Text::Table.new
  table.head = ['Queue', 'Worker ID', 'Worker Name', 'Status', 'Job ID', 'Job Details']
  table.rows = []

  @status[:queues].each do |queue, workers|
    if workers.empty?
      table.rows << [
          queue,
          '- no workers -',
          '',
          '',
          '',
          '',
      ]
    else
      workers.each_pair do |worker_id, worker_status|

        job = worker_status[:job]
        if job
          params_str = if job[:parameters]
                         job[:parameters].map(&:inspect).join(',')[0..20]
                       else
                         ''
                       end
          job_details = "#{job[:target]}.#{job[:method]}(#{params_str})"
        end

        table.rows << [
            queue,
            worker_id,
            worker_status[:name],
            worker_status[:status],
            worker_status[:job_id],
            job_details,
        ]
      end
    end
  end

  puts table.to_s
end