build_icon.sh

# Get some variables provided by autosubmit.
# TODO: What do we do to ensure that these variables are defined in the proj file?
WORKDIR=%HPCROOTDIR%
ICON_VERSION=%ICON.VERSION%
COMPILER=%SPACK.COMPILER%

# If the workdir directory does not exist create it
if [ ! -d ${WORKDIR} ]; then
  mkdir -p ${WORKDIR}
fi

# Go to the working directory
cd ${WORKDIR} || exit


. ${WORKDIR}/proj/platforms/common/spack_utils.sh
load_spack "%spack.init%" "%spack.root%" "%spack.url%" "%spack.branch%" "%spack.externals%" "%spack.compiler%" "%spack.disable_local_config%" "%spack.user_cache_path%" "%spack.user_config_path%" "%spack.upstreams%"


if [ ! $(rpm -qa | grep bzip2) ]; then
  spack install --reuse bzip2
  spack load --first bzip2
fi

SPACK_BUILD_ICON="%ICON.BUILD_CMD%"
if [ ! -z "$SPACK_BUILD_ICON" ]; then
  echo "Installing ICON with spack!"
  echo "cmd=$SPACK_BUILD_ICON"
  # In case the autosubmit repository with the icon-nwp receipt doesn't exist, add it
  if [[ $(spack repo list | grep "${WORKDIR}/proj/spack_repo") ]]; then
    echo "icon spack repo was already added to repo list"
  else
    spack repo add ${WORKDIR}/proj/spack_repo
  fi
  spack spec $SPACK_BUILD_ICON
  spack install --reuse $SPACK_BUILD_ICON
  #TODO: had some problems with spack load when more than one version is available, adding --first to overcome that
  # although in principle we should not install the model if its already installed.
  spack load --first "icon-nwp@${ICON_VERSION}%${COMPILER}"
else
  echo "\%icon.build_cmd\% is not defined. If you want to compile icon with spack, please provide a spack compile instruction string in your build.yml"
fi

# Need to get ECCODES DWD definitions:
eccodes_version=$(spack spec icon-nwp@${ICON_VERSION}%${COMPILER} | grep eccodes | grep -o "@.*%" | grep -o "[0-9\.]*")

definitions_tar_file=eccodes_definitions.edzw-${eccodes_version}-1.tar.bz2
if [ ! -f "${definitions_tar_file}" ]; then
  defs_url=https://opendata.dwd.de/weather/lib/grib/${definitions_tar_file}
  wget "${defs_url}"

  # Decompress definitions file
  tar -xf "${definitions_tar_file}"
  # Create a file containing the environment variable that needs to be set in order to use DWD's definitions:
  echo "export ECCODES_DEFINITION_PATH=${WORKDIR}/definitions.edzw-${eccodes_version}-1" >eccodes_defs.env
fi