reboot-gen

#!/bin/sh

set -e

show_help() {
  cat << EOF

Simple tool to generate Mender Artifact suitable for reboot Update Module

Usage: $0 [options] [-- [options-for-mender-artifact] ]

    Options: [ -n|artifact-name -t|--device-type -o|--output_path -h|--help ]

        --artifact-name     - Artifact name
        --device-type       - Target device type identification (can be given more than once)
        --output-path       - Path to output artifact file. Default: reboot-artifact.mender
        --help              - Show help and exit

Anything after a '--' gets passed directly to the mender-artifact tool.

EOF
}

show_help_and_exit_error() {
  show_help
  exit 1
}

check_dependency() {
  if ! which "$1" > /dev/null; then
    echo "The $1 utility is not found but required to generate Artifacts." 1>&2
    return 1
  fi
}

if ! check_dependency mender-artifact; then
  echo "Please follow the instructions here to install mender-artifact and then try again: https://docs.mender.io/downloads#mender-artifact" 1>&2
  exit 1
fi

device_types=""
artifact_name=""
output_path="reboot-artifact.mender"
passthrough=0
passthrough_args=""

while [ -n "$1" ]; do
  if test $passthrough -eq 1
  then
    passthrough_args="$passthrough_args $1"
    shift
    continue
  fi
  case "$1" in
    --device-type | -t)
      if [ -z "$2" ]; then
        show_help_and_exit_error
      fi
      device_types="$device_types $1 $2"
      shift 2
      ;;
    --artifact-name | -n)
      if [ -z "$2" ]; then
        show_help_and_exit_error
      fi
      artifact_name=$2
      shift 2
      ;;
    --output-path | -o)
      if [ -z "$2" ]; then
        show_help_and_exit_error
      fi
      output_path=$2
      shift 2
      ;;
    -h | --help)
      show_help
      exit 0
      ;;
    --)
      passthrough=1
      shift
      ;;
    -*)
      echo "Error: unsupported option $1"
      show_help_and_exit_error
      ;;
    *)
      shift
      ;;
  esac
done

if [ -z "${artifact_name}" ]; then
  echo "Artifact name not specified. Aborting."
  show_help_and_exit_error
fi

if [ -z "${device_types}" ]; then
  echo "Device type not specified. Aborting."
  show_help_and_exit_error
fi

mender-artifact write module-image \
  -T reboot \
  $device_types \
  -o $output_path \
  -n $artifact_name \
  $passthrough_args

echo "Artifact $output_path generated successfully:"
mender-artifact read $output_path

exit 0