Class: ScbiMapreduce::WorkerLauncher

Inherits:
Object
  • Object
show all
Defined in:
lib/scbi_mapreduce/worker_launcher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server_ip, server_port, server_ip_list, workers, worker_file, log_file = nil, init_env_file = nil) ⇒ WorkerLauncher

Returns a new instance of WorkerLauncher.



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 13

def initialize(server_ip,server_port, server_ip_list,workers, worker_file, log_file=nil, init_env_file=nil)
  @server_ip = server_ip
  @server_port = server_port
  @worker_file = worker_file
  @workers=workers
  @init_env_file=init_env_file
  @server_ip_list=server_ip_list


  if log_file.nil?
    log_file = 'logs/launcher_log.txt'
  end

  FileUtils.mkdir_p(File.dirname(log_file)) if ((log_file!=STDOUT) && (!File.exists?(File.dirname(log_file))))


  $LAUNCHER_LOG = Logger.new(log_file)

  $LAUNCHER_LOG.datetime_format = "%Y-%m-%d %H:%M:%S"
end

Instance Attribute Details

#server_ip ⇒ Object

Returns the value of attribute server_ip.



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 11

def server_ip
  @server_ip
end

#server_port ⇒ Object

Returns the value of attribute server_port.



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 11

def server_port
  @server_port
end

Instance Method Details

#find_common_ip(machine_ip, ip_list) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 66

def find_common_ip(machine_ip,ip_list)

  def left_largest_common_substr(s1,s2)
    res=''

    s2.scan(/./).each_with_index do |l1,i|
      if s1[i]==l1
        res << l1
      else
        break
      end
    end
    res

  end

  def remove_final_dot(s)
    res=s
    # remove final dot
    if res[res.length-1]=='.'
      res=res[0,res.length-1]
    end

    return res
  end


  res=''
  common_ip=''

  ip_list.each do |ip|

    res=left_largest_common_substr(ip,machine_ip)
    res=remove_final_dot(res)

    if res.length>common_ip.length
      common_ip=res
    end
  end

  return common_ip
end

#launch_external_workers(workers) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 110

def launch_external_workers(workers)
  puts "Launching #{workers.count} external workers: #{workers}"
  worker_id=0
  init=''
  if @init_env_file
    init_path = File.expand_path(@init_env_file)
    # path = File.join($ROOT_PATH)
    # puts "init_env file: #{path}"
    if File.exists?(init_path)
      puts "File #{init_path} exists, using it"
      init=". #{init_path}; "
    end
  end

  init_dir=Dir.pwd

  cd =''

  if File.exists?(init_dir)
    cd = "cd #{init_dir}; "
  end

  log_file=File.join(init_dir,'logs','launchers')

  workers.each do |machine|

    # if server_ip is not in valid ips
    if !@server_ip_list.include?(@server_ip)
      # find matching ip between server and worker
      machine_ip = Resolv.getaddress(machine)
      matching_ip=find_common_ip(machine_ip,@server_ip_list)
      found_ip=@server_ip_list.select{|one_ip| one_ip.index(matching_ip)==0}.first
    else
      found_ip=@server_ip
    end

    if !found_ip.nil?
      # cmd = "ssh #{machine} \"#{init} #{cd} #{INTERPRETER} #{File.join(File.dirname(__FILE__),'main_worker.rb')} #{worker_id.to_s} #{@server_ip} #{@server_port} #{@worker_file}\""
      # cmd = "ssh #{machine} \"nohup #{File.join(File.dirname(__FILE__),'launcher.sh')} #{worker_id.to_s} #{@server_ip} #{@server_port} #{@worker_file} #{init_dir} #{init_path}  </dev/null >> #{log_file} 2>> #{log_file} & \""
      cmd = "ssh #{machine} \"nohup #{File.join(File.dirname(__FILE__),'launcher.sh')} #{worker_id.to_s} #{found_ip} #{@server_port} #{@worker_file} #{init_dir} #{init_path}  </dev/null >> #{log_file} 2>> #{log_file} & \""

      $LAUNCHER_LOG.info cmd

      pid=fork{
        exec(cmd)
      }

      worker_id+=1
    else
      $LAUNCHER_LOG.error("Couldn't find a matching ip between worker (#{machine_ip}) and server #{ip_list.to_json}")
    end
  end
end

#launch_worker(worker_id, server_ip, server_port) ⇒ Object

override this



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 59

def launch_worker(worker_id, server_ip, server_port)

  cmd = "#{INTERPRETER} #{File.join(File.dirname(__FILE__),'main_worker.rb')} #{worker_id.to_s} #{server_ip} #{server_port} #{@worker_file}"
  puts cmd
  exec(cmd)
end

#launch_workers ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 39

def launch_workers
  # TODO - si aqui falla algo, no peta, se bloquea
  $LAUNCHER_LOG.info "Launching #{@workers} local workers"
  if @workers > 0
    $LAUNCHER_LOG.info "Connecting #{@workers} local workers to #{@server_ip}:#{@server_port}"
    threads = []
    @workers.times do |i|
      pid=fork{
        launch_worker(i,@server_ip,@server_port)
        $LAUNCHER_LOG.info "Worker #{i} launched [#{@server_ip}:#{@server_port}]"
      }

      #threads.each { |aThread|  aThread.join }
    end
    #Process.waitall
    $LAUNCHER_LOG.info "All workers launched"
  end
end

#launch_workers_and_wait ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 34

def launch_workers_and_wait
  launch_workers
  Process.waitall
end

#left_largest_common_substr(s1, s2) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 68

def left_largest_common_substr(s1,s2)
  res=''

  s2.scan(/./).each_with_index do |l1,i|
    if s1[i]==l1
      res << l1
    else
      break
    end
  end
  res

end

#remove_final_dot(s) ⇒ Object 



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# File 'lib/scbi_mapreduce/worker_launcher.rb', line 82

def remove_final_dot(s)
  res=s
  # remove final dot
  if res[res.length-1]=='.'
    res=res[0,res.length-1]
  end

  return res
end