create-image-manifest

#!/usr/bin/env bash
#
# Copyright (c) 2017 Joyent Inc., All rights reserved.
#

set -o errexit

now=$(date -u +%Y-%m-%dT%TZ)
vm_uuid=$(uuid)
SUM=/usr/bin/sum

usage() {
    cat <<USAGE
Usage: $0 -f filename -n <name> -s <size> -v <version>

    -d <image description> (optional, default: "<NAME> <VERSION> KVM Image")
    -D <disk driver> (optional, default: "virtio")
    -f <filename of VM image> (required)
    -n <name of VM image> (required)
    -N <NIC driver> (optional, default: "virtio")
    -o <OS name> (optional, default: bsd)
    -s <size of virtual disk (as seen by VM, MiB)> (required)
    -v <version of VM image> (required)
    -h <homepage link> (optional)

Example:

    $0 -f freebsd-11-20161019.zfs.gz -n freebsd-11 -s 10240 -v 20161019 -o bsd

USAGE
    exit 1
}

while getopts d:D:f:n:N:o:s:v:h:? c; do
    case ${c} in
    d)
        description=${OPTARG}
        ;;
    D)
        disk_driver=${OPTARG}
        ;;
    f)
        filename=${OPTARG}
        ;;
    n)
        name=${OPTARG}
        ;;
    N)
        nic_driver=${OPTARG}
        ;;
    o)
        os=${OPTARG}
        ;;
    s)
        image_size=${OPTARG}
        ;;
    v)
        version=${OPTARG}
        ;;
    h)
        homepage=${OPTARG}
        ;;
    \?)
        usage
        ;;
    esac
done

if [[ -z ${filename} || -z ${name} || -z ${version} || -z ${image_size} ]]; then
    echo "FATAL: All of -f, -n, -s and -v are required."
    usage
fi

if [[ -z ${description} ]]; then
    description="${name} ${version} KVM image"
fi

if [[ -z ${os} ]]; then
    os=bsd
fi

if [[ -z ${homepage} ]]; then
    homepage=http://docs.joyent.com/
fi

if [[ ! -f ${filename} ]]; then
    echo "FATAL: ${filename} does not exist."
    usage
fi

if [[ -z ${disk_driver} ]]; then
    disk_driver="virtio"
fi

if [[ -z ${nic_driver} ]]; then
    nic_driver="virtio"
fi

shasum=$($SUM -x sha1 ${filename} | cut -d' ' -f1)
filesize=$(wc -c < ${filename})

cat <<EOF
{
  "v": "2",
  "name": "${name}",
  "version": "${version}",
  "type": "zvol",
  "cpu_type": "host",
  "description": "${description}",
  "homepage": "${homepage}",
  "published_at": "${now}",
  "os": "${os}",
  "image_size": "${image_size}",
  "files": [
    {
      "sha1": "${shasum}",
      "size": ${filesize},
      "compression": "gzip"
    }
  ],
  "requirements": {
    "networks": [
      {
        "name": "net0",
        "description": "public"
      }
    ],
    "ssh_key": true
  },
  "disk_driver": "virtio",
  "nic_driver": "virtio",
  "uuid": "${vm_uuid}",
  "public": false,
  "owner": "00000000-0000-0000-0000-000000000000",
  "users": [{"name": "root"}],
   "tags": {
    "role": "os"
  }
}
EOF