#!/usr/bin/env bash

# **create-nodes**

# Creates baremetal poseur nodes for ironic testing purposes

set -exu

# Keep track of the devstack directory
TOP_DIR=$(cd $(dirname "$0")/.. && pwd)

CPU=$1
MEM=$(( 1024 * $2 ))
# extra G to allow fuzz for partition table : flavor size and registered size
# need to be different to actual size.
DISK=$(( $3 + 1))

case $4 in
    i386) ARCH='i686' ;;
    amd64) ARCH='x86_64' ;;
    *) echo "Unsupported arch $4!" ; exit 1 ;;
esac

TOTAL=$(($5 - 1))
BRIDGE=$6
EMULATOR=$7

LIBVIRT_NIC_DRIVER=${LIBVIRT_NIC_DRIVER:-"e1000"}
LIBVIRT_STORAGE_POOL=${LIBVIRT_STORAGE_POOL:-"default"}

if ! virsh pool-list --all | grep -q $LIBVIRT_STORAGE_POOL; then
    virsh pool-define-as --name $LIBVIRT_STORAGE_POOL dir --target /var/lib/libvirt/images >&2
    virsh pool-autostart $LIBVIRT_STORAGE_POOL >&2
    virsh pool-start $LIBVIRT_STORAGE_POOL >&2
fi

pool_state=$(virsh pool-info $LIBVIRT_STORAGE_POOL | grep State | awk '{ print $2 }')
if [ "$pool_state" != "running" ] ; then
  [ ! -d /var/lib/libvirt/images ] && sudo mkdir /var/lib/libvirt/images
  virsh pool-start $LIBVIRT_STORAGE_POOL >&2
fi

PREALLOC=
if [ -f /etc/debian_version ]; then
    PREALLOC="--prealloc-metadata"
fi

DOMS=""
for idx in $(seq 0 $TOTAL) ; do
    NAME="baremetal${BRIDGE}_${idx}"
    DOMS="$DOMS $NAME"
    VOL_NAME="baremetal${BRIDGE}-${idx}.qcow2"
    (virsh list --all | grep -q $NAME) && continue

    virsh vol-list --pool $LIBVIRT_STORAGE_POOL | grep -q $VOL_NAME &&
        virsh vol-delete $VOL_NAME --pool $LIBVIRT_STORAGE_POOL >&2
    virsh vol-create-as $LIBVIRT_STORAGE_POOL ${VOL_NAME} ${DISK}G --format qcow2 $PREALLOC >&2
    volume_path=$(virsh vol-path --pool $LIBVIRT_STORAGE_POOL $VOL_NAME)
    # Pre-touch the VM to set +C, as it can only be set on empty files.
    sudo touch "$volume_path"
    sudo chattr +C "$volume_path" || true
    $TOP_DIR/scripts/configure-vm --bootdev network --name $NAME --image "$volume_path" --arch $ARCH --cpus $CPU --memory $MEM --libvirt-nic-driver $LIBVIRT_NIC_DRIVER --emulator $EMULATOR --network $BRIDGE >&2
done

for dom in $DOMS ; do
    # echo mac
    virsh dumpxml $dom | grep "mac address" | head -1 | cut -d\' -f2
done