#!/bin/bash
# Manage VM nodes which have a specific set of hardware attributes.

if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

source "${DIR}/common.sh"

function main {
  case "$1" in
    "create-docker") create_docker;;
    "create-rkt") create_rkt;;
    "create-uefi") create_uefi;;
    "start") start;;
    "reboot") reboot;;
    "shutdown") shutdown;;
    "poweroff") poweroff;;
    "destroy") destroy;;
    *)
      usage
      exit 2
      ;;
  esac
}

function usage {
  echo "USAGE: ${0##*/} <command>"
  echo "Commands:"
  echo -e "\tcreate-docker\tcreate libvirt nodes on the docker0 bridge"
  echo -e "\tcreate-rkt\tcreate libvirt nodes on a rkt CNI metal0 bridge"
  echo -e "\tcreate-uefi\tcreate UEFI libvirt nodes on the rkt CNI metal0 bridge"
  echo -e "\tstart\t\tstart the libvirt nodes"
  echo -e "\treboot\t\treboot the libvirt nodes"
  echo -e "\tshutdown\tshutdown the libvirt nodes"
  echo -e "\tpoweroff\tpoweroff the libvirt nodes"
  echo -e "\tdestroy\t\tdestroy the libvirt nodes"
}
COMMON_VIRT_OPTS="--memory=1024 --vcpus=1 --os-type=linux --noautoconsole --pxe --disk pool=default,size=6 "

function create_docker {
  virt-install --name $NODE1_NAME --network=bridge:docker0,mac=$NODE1_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE2_NAME --network=bridge:docker0,mac=$NODE2_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE3_NAME --network=bridge:docker0,mac=$NODE3_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE4_NAME --network=bridge:docker0,mac=$NODE4_MAC $COMMON_VIRT_OPTS --boot=hd,network
}

function create_rkt {
  virt-install --name $NODE1_NAME --network=bridge:metal0,mac=$NODE1_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE2_NAME --network=bridge:metal0,mac=$NODE2_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE3_NAME --network=bridge:metal0,mac=$NODE3_MAC $COMMON_VIRT_OPTS --boot=hd,network
  virt-install --name $NODE4_NAME --network=bridge:metal0,mac=$NODE4_MAC $COMMON_VIRT_OPTS --boot=hd,network
}

function create_uefi {
  virt-install --name $NODE1_NAME --network=bridge=metal0,model=e1000,mac=$NODE1_MAC $COMMON_VIRT_OPTS --boot=uefi,network
  virt-install --name $NODE2_NAME --network=bridge=metal0,model=e1000,mac=$NODE2_MAC $COMMON_VIRT_OPTS --boot=uefi,network
  virt-install --name $NODE3_NAME --network=bridge=metal0,model=e1000,mac=$NODE3_MAC $COMMON_VIRT_OPTS --boot=uefi,network
  virt-install --name $NODE4_NAME --network=bridge=metal0,model=e1000,mac=$NODE4_MAC $COMMON_VIRT_OPTS --boot=uefi,network
}

nodes=(node1 node2 node3 node4)

function start {
  for node in ${nodes[@]}; do
    virsh start $node
  done
}

function reboot {
  for node in ${nodes[@]}; do
    virsh reboot $node
  done
}

function shutdown {
  for node in ${nodes[@]}; do
    virsh shutdown $node
  done
}

function poweroff {
  for node in ${nodes[@]}; do
    virsh destroy $node
  done
}

function destroy {
  for node in ${nodes[@]}; do
    virsh destroy $node
  done
  for node in ${nodes[@]}; do
    virsh undefine $node
  done
  virsh pool-refresh default
  for node in ${nodes[@]}; do
    virsh vol-delete --pool default $node.qcow2
  done
}

main $@