code: def assign_rank(
      self, rank, wait_conn, tree_map, parent_map, ring_map
  ):
      self.rank = rank
      nnset = set(tree_map[rank])
      rprev, rnext = ring_map[rank]
      self.sock.sendint(rank)
      # send parent rank
      self.sock.sendint(parent_map[rank])
      # send world size
      self.sock.sendint(len(tree_map))
      self.sock.sendint(len(nnset))
      # send the rprev and next link
      for r in nnset:
          self.sock.sendint(r)
      # send prev link
      if rprev != -1 and rprev != rank:
          nnset.add(rprev)
          self.sock.sendint(rprev)
      else:
          self.sock.sendint(-1)
      # send next link
      if rnext != -1 and rnext != rank:
          nnset.add(rnext)
          self.sock.sendint(rnext)
      else:
          self.sock.sendint(-1)
      while True:
          ngood = self.sock.recvint()
          goodset = set([])
          for _ in range(ngood):
              goodset.add(self.sock.recvint())
          assert goodset.issubset(nnset)
          badset = nnset - goodset
          conset = []
          for r in badset:
              if r in wait_conn:
                  conset.append(r)
          self.sock.sendint(len(conset))
          self.sock.sendint(len(badset) - len(conset))
          for r in conset:
              self.sock.sendstr(wait_conn[r].host)
              self.sock.sendint(wait_conn[r].port)
              self.sock.sendint(r)
          nerr = self.sock.recvint()
          if nerr != 0:
              continue
          self.port = self.sock.recvint()
          rmset = []
          # all connection was successuly setup
          for r in conset:
              wait_conn[r].wait_accept -= 1
              if wait_conn[r].wait_accept == 0:
                  rmset.append(r)
          for r in rmset:
              wait_conn.pop(r, None)
          self.wait_accept = len(badset) - len(conset)
          return rmset
  
imports: from __future__ import absolute_import
  import os
  import sys
  import socket
  import struct
  import subprocess
  import argparse
  import time
  import logging
  from threading import Thread
label_desc: Use image node_id 3 for calling the SlaveEntry obj's underlying member method code with example usage: obj.assign_rank(rank, wait_conn, tree_map, parent_map, ring_map) and returns: rmset