Module: Uc::ShellHelper

Included in:
Server, Status
Defined in:
lib/uc/shell_helper.rb

Instance Method Summary collapse

Instance Method Details

#cmd(command, error_msg: nil, return_output: false) ⇒ Object

Raises:



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# File 'lib/uc/shell_helper.rb', line 4

def cmd(command, error_msg: nil, return_output: false)
  puts "#{"Running".bold.green} #{command}"
  if return_output
    output = `#{command}`
  else
    output = ""
    system "#{command} 2>&1"
  end 
  return_value = $?.exitstatus
  error_msg ||= "Non zero exit for \"#{command}\""
  raise ::Uc::Error, error_msg if return_value !=0 
  return output
end

#kill(pid, timeout) ⇒ Object 



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# File 'lib/uc/shell_helper.rb', line 18

def kill(pid, timeout)
  Process.kill(:TERM, pid)
  logger.debug "TERM signal sent to #{pid}"
  (1..timeout).each do
    if not process_running? pid
      logger.info "Stopped #{pid}"
      return
    end
    sleep 1
  end
  Process.kill(9, pid)
  sleep 1
  logger.info "Killed #{pid}"
end

#process_running?(pid) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uc/shell_helper.rb', line 33

def process_running?(pid)
  return false if pid <= 0
  Process.getpgid pid
  return true
rescue Errno::ESRCH
    return false
end