Class: ScbiMapreduce::WorkerLauncher

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

Constant Summary collapse

@@worker_id = 
0

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 15

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_global_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 69

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 113

def launch_external_workers(workers)
  puts "Launching #{workers.count} external workers: #{workers}"
  puts "INIT_ENV_FILE: #{@init_env_file}"
  
  # This sleep is necessary to leave time to lustre fylesystems to sync the log folder between all nodes. If not, external workers will not be launched.
  if !workers.empty?
    puts "SLEEP 10 for logs folder sync in lustre fs"
    sleep 10
  end
  
  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

  

  workers.each do |machine|
    
    log_file=File.join(init_dir,'logs',"launcher_#{@@worker_id}")
    log_dir=File.join(init_dir,'logs')
    
    # 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 62

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 42

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(@@worker_id,@server_ip,@server_port)
        $LAUNCHER_LOG.info "Worker #{i} launched [#{@server_ip}:#{@server_port}]"
      }
      @@worker_id+=1
      #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 37

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 71

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 85

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