#!/usr/bin/bash

#

# deploy-openstack IMAGE USERDATA

#

# Starts an openstack instance, injecting configuration via cloud-init. It

# assumes that an openstackrc file has been sourced into the environment.

#

# CONFIG   -- A JSON file containing configuration for an openstack deployment,

#             containing "image", "flavor", "network" (same as openstack server

#             create arguments), and "extra-args".

#

# USERDATA -- A cloud-init user-data config file, or a directory of

#             configuration as accepted by the `gen-user-data` tool.

#

set -euo pipefail

if [[ "$#" != 2 ]]; then

  echo "usage: $0 CONFIG USERDATA"

  exit 1

fi

scriptdir=$(dirname "$0")

config=$1

userdata=$2

# Verify that an openstackrc file has been sourced. This will fail when the

# variables do not exist.

printenv OS_PROJECT_NAME OS_USERNAME > /dev/null

workdir=$(mktemp -d "$scriptdir/qemu-tmp-XXXXXX")

function cleanup() {

  rm -rf "$workdir"

}

trap cleanup EXIT

if [ -d "$userdata" ]; then

  "$scriptdir/gen-user-data" "$userdata" > "$workdir/user-data"

else

  cp "$userdata" "$workdir/user-data"

fi

name=$(jq -r '.name // ""' "$config")

image=$(jq -r '.image // ""' "$config")

flavor=$(jq -r '.flavor // ""' "$config")

network=$(jq -r '.network // ""' "$config")

extra_args=$(jq -r '.extra_args // ""' "$config")

if [[ -z "$name" || -z "$image" || -z "$flavor" ]]; then

  echo "at least 'name', 'image', and 'flavor' must be set in $config"

  exit 1

fi

if openstack server show "$name" 2>/dev/null >/dev/null; then

  echo "server '$name' already exists - delete it with"

  echo ""

  echo "    openstack server stop $name"

  echo "    openstack server delete $name"

  exit 1

fi

openstack server create \

  --wait \

  --image "$image" \

  --flavor "$flavor" \

  --user-data "$workdir/user-data" \

  ${network:+--network "$network"} \

  ${extra_args:+$extra_args} \

  "$name"