sshpc_verify.sh

Conteúdo do arquivo

#!/bin/bash

#########################################################################################
## SSHPC - Cluster de processamento distribuído baseado em SSH                         ##
##                                                                                     ##
## Local:   Laboratório Multiusuário de Bioinformática e Análise de Dados (LAMBDA)     ##
##          Centro de Biotecnologia (CBiotec), Universidade Federal da Paraíba (UFPB)  ##
## Data:   30/05/2023                                                                  ##
## Coordenador: Edson Luiz Folador                                                     ##
## IC: Arthur Araújo de Lacerda                                                        ##
#########################################################################################

readonly PROGNAME=$(basename "$0")
readonly PROGDIR=$(readlink -m $(dirname "$0"))
readonly SSHPC_DIRECTORY="/home/sshpc"


# debugging flag
debugging() { ${debug} && echo -e "$1"; }

send_availability() {
  ### Gets information from connection attempt
  local invalid_attempt="${1}" 
  while IFS=$'\t' read -r lab mac free_cores ip; do 
    debugging "\nlab: $lab\nmac: $mac\navailable cores: $free_cores\nip: $ip\n"
    if $debug
      then "${SSHPC_DIRECTORY}"/.bin/sshpc_run.sh "${ip}" "${mac}" "${free_cores}" "${lab}" &
      else "${SSHPC_DIRECTORY}"/.bin/sshpc_run.sh -q "${ip}" "${mac}" "${free_cores}" "${lab}" &
    fi
  done <<< "${invalid_attempt}"
}

scan_for_availability() {
    # Select only the login attempts that are Invalid User attempts
  # sshpc.log is wherer attemps are stored
  local invalid_attempt
  local invalid_attempt=$(grep 'Invalid user sshpc' < "/home/sshpc/sshpc.log" | sed -E 's/ +|_/\t/g'| cut -f 9,10,11,13 | sort -k 3 | awk '!a[$4]++') 
  echo "" > "${SSHPC_DIRECTORY}/sshpc.log" 

  if [[ -z "${invalid_attempt}" ]]; then
    debugging "no sshpc calls"
    return 0
  else
    send_availability "${invalid_attempt}"
    return 0
  fi

}

main () {
  # Debug 
  local debug=true
  while true; do
    case "$1" in
      -q | --quiet) debug=false; shift;;
      --) break;;
      *) break;;
    esac
  done
  debugging "=====================================\n|||    Running ${PROGNAME}    |||\n====================================="

  scan_for_availability
}

main "$@"