container

#!/bin/sh -e
#
# Utility container for bootstrapping and configuring Talos Linux for Supernetes
# (c) Dennis Marttinen 2024
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.

_build() {
    # If _FULL_RECREATE is set, append --no-cache
    # If using Podman, the build process needs to be explicitly parallelized
    case "$RUNTIME" in */podman) _IS_PODMAN=1;; esac
    "$RUNTIME" build ${_IS_PODMAN+--jobs "$(nproc)"} -t supernetes-bootstrap ${_FULL_RECREATE+--no-cache} .
    unset _FULL_RECREATE # Don't keep re-downloading in case this loops
}

unset _RECREATE
unset _FULL_RECREATE

if [ -z "$RUNTIME" ]; then RUNTIME=$(command -v podman ||:); fi
if [ -z "$RUNTIME" ]; then RUNTIME=$(command -v docker ||:); fi
if [ -z "$RUNTIME" ]; then echo "Error: no container runtime found"; exit 1; fi

while [ "$#" -gt 0 ]; do
    case "$1" in
    -f | --full)
        _FULL_RECREATE=
        shift
        ;;
    -r | --recreate)
        _RECREATE=
        shift
        ;;
    *)
        echo "Usage: $0 [-r|--recreate [-f|--full]]"
        exit 1
        ;;
    esac
done

if [ -n "${_RECREATE+x}" ]; then
    "$RUNTIME" rm -f supernetes-bootstrap
    _build
fi

while
    "$RUNTIME" exec -it supernetes-bootstrap bash
    [ "$?" -eq 125 ] # Container not found
do
    while
        "$RUNTIME" run -d --rm \
            --name supernetes-bootstrap \
            --pull never \
            -p 13000-13009:13000-13009 \
            -v ./bootstrap:/bootstrap:Z \
            -v ./private/kube:/root/.kube:Z \
            -v ./private/talos:/root/.talos:Z \
            -v ./work:/work:Z \
            -w /work \
            supernetes-bootstrap
        [ "$?" -eq 125 ] # Image not found
    do
        _build
    done
done