infrastructure/scripts/cache-node.sh

# SPDX-FileCopyrightText: 2024 Ryan Lahfa <ryan.lahfa@dgnum.eu>
# SPDX-FileCopyrightText: 2024 Tom Hubrecht <tom.hubrecht@dgnum.eu>
#
# SPDX-License-Identifier: EUPL-1.2

set -o errexit
set -o nounset
set -o pipefail
shopt -s lastpipe

# Remove the `nixpkgs=` default input.
export NIX_PATH="nixpkgs="

system_type="$(colmena eval -E "{ nodes, ... }: nodes.${BUILD_NODE}.config.deployment.systemType" --show-trace)"
# Get rid of surrounding quotes.
system_type="${system_type%\"}"
system_type="${system_type#\"}"

case "$system_type" in
  nixos)
    toplevel_path="config.system.build.toplevel"
    ;;
  zyxel-nwa50ax)
    toplevel_path="config.system.outputs.zyxel-nwa-fit"
    ;;
  netconf)
    toplevel_path="config.netconf.rpc"
    ;;
  *)
    echo "Unsupported system type '$system_type' for caching; add an entry in 'scripts/cache-node.sh'"
    exit 1
    ;;
esac

drv=$(colmena eval --instantiate -E "{ nodes, ... }: nodes.${BUILD_NODE}.${toplevel_path}" --show-trace)

# Build the derivation and send it to the great beyond
nix-store --query --requisites --force-realise --include-outputs "$drv" | grep -v '.*\.drv' >paths.txt

if [ "$STORE_PASSWORD" == "" ]; then
  echo "No password given for the remote cache, uploading cannot take place."
  exit 0
fi

cat <<EOF >.netrc
default
login $STORE_USER
password $STORE_PASSWORD
EOF

nix copy \
  --extra-experimental-features nix-command \
  --to "$STORE_ENDPOINT?compression=none" \
  --netrc-file .netrc \
  "$(nix-store --realise "$drv")"

rm .netrc