#!/bin/sh
BUILD=${BUILD:=default}
LAB=${LAB:=0}

[ -r .lock${LAB} ] && {
  echo "Lock file for LAB${LAB}, bailing"
  exit
}

## Do not touch below this line
LABDIR=/var/lab
STAGING=$LABDIR/staging
HVN="hvn${LAB}.lab.ipng.ch"
CMD=$1

[ "$CMD" != "start" -a "$CMD" != "shutdown" -a "$CMD" != "destroy" -a "$CMD" != "pristine" ] && {
  echo "Usage: LAB=0 ./command start|shutdown|destroy|pristine"
  exit
}

VMS=$(ls -1 build/${BUILD}/${HVN}/)

for VM in $VMS; do
  echo "[$VM] Executing $CMD"
  case $CMD in
	  pristine)
    echo "[$VM] Destroying VM"
    ssh root@$HVN "/usr/bin/virsh list --all | grep $VM.*running >/dev/null && virsh destroy $VM"
    echo "[$VM] Rolling VM back to pristine snapshot"
    ssh root@$HVN "zfs rollback ssd-vol0/${VM}@pristine"
    ;;
	  start|shutdown)
    echo "[$VM] Sending $CMD to VM"
    ssh root@$HVN "virsh $CMD $VM"
    ;;
	  destroy)
    echo "[$VM] Destroying VM"
    ssh root@$HVN "/usr/bin/virsh list --all | grep $VM.*running >/dev/null && virsh destroy $VM"
    echo "[$VM] Destroying ZFS image"
    ssh root@$HVN "zfs destroy -r ssd-vol0/$VM"
    ;;
  esac
done

[ "$CMD" = "start" ] && {
  echo "*  Committing OVS config"
  scp overlays/$BUILD/ovs-config.sh root@$HVN:$LABDIR
  ssh root@$HVN "set -x; LAB=${LAB} $LABDIR/ovs-config.sh"
}