#!/bin/bash

exec 2> /dev/null

TOTALRESERVE=0
for SERVICENAME in $(docker service ls -q); do
  echo -n $( docker service inspect ${SERVICENAME} -f {{.Spec.Name}} )' '
  SERVICE_RESERVE=$(docker service inspect $SERVICENAME -f {{.Spec.TaskTemplate.Resources.Reservations.MemoryBytes}})
  if [ $? -eq 0 ]; then
    SERVICE_RESERVE=$(( SERVICE_RESERVE*$(docker service ps $SERVICENAME -q -f desired-state=running | wc -l)/1024/1024 )) 
  else
    SERVICE_RESERVE='none'
  fi
  echo ' Total service reserved '$SERVICE_RESERVE' M'
  TOTALRESERVE=$(( TOTALRESERVE+SERVICE_RESERVE ))
done
echo 'Summary reserved '$TOTALRESERVE' M'