xmidt-org/svalinn

#!/usr/bin/env sh


set -e

# check to see if this file is being run or sourced from another script
_is_sourced() {
    # https://unix.stackexchange.com/a/215279
    [ "${#FUNCNAME[@]}" -ge 2 ] \
        && [ "${FUNCNAME[0]}" = '_is_sourced' ] \
        && [ "${FUNCNAME[1]}" = 'source' ]
}

# check arguments for an option that would cause /svalinn to stop
# return true if there is one
_want_help() {
    local arg
    for arg; do
        case "$arg" in
            -'?'|--help|-v)
                return 0
                ;;
        esac
    done
    return 1
}

_main() {
    # if command starts with an option, prepend svalinn
    if [ "${1:0:1}" = '-' ]; then
        set -- /svalinn "$@"
    fi
        # skip setup if they aren't running /svalinn or want an option that stops /svalinn
    if [ "$1" = '/svalinn' ] && ! _want_help "$@"; then
        echo "Entrypoint script for Svalinn Server ${VERSION} started."

        if [ ! -s /etc/svalinn/svalinn.yaml ]; then
          echo "Building out template for file"
          /spruce merge --prune service.fixed /svalinn.yaml /tmp/svalinn_spruce.yaml > /etc/svalinn/svalinn.yaml
        fi
    fi

    exec "$@"
}

# If we are sourced from elsewhere, don't perform any further actions
if ! _is_sourced; then
    _main "$@"
fi