renameschemas

#!/usr/bin/env bash

# renameschemas

SCRIPTDIR=$(dirname "${0}")

. "${SCRIPTDIR}/mmfunctions" || { echo "Missing '${SCRIPTDIR}/mmfunctions'. Exiting." ; exit 1 ; }

unset VERSION
if [[ $(dirname $(command -v "${0}")) = "/usr/local/bin" || $(dirname $(command -v "${0}")) = "${HOME}/.linuxbrew/bin" ]] ; then
    VERSION=$(TMP=$(brew info ltopers | grep ".*\*$" | grep -Eo "/ltopers/.* \(") ; echo "${TMP:9:(${#TMP}-11)}")
fi

_usage(){
    cat <<EOF
$(basename "${0}") ${VERSION}

This script finds all .schema LTFS indexes in the LTO_LOGS directory and renames
them to use the top-level file system directory name rather than the UUID. Any
conflicting filenames are moved to another folder if needed.

Usage: $(basename "${0}") -u | -h
  -u  change dir-named schema files to the tape UUID
  -h  display this help
EOF
}

[[ -z "${#}" ]] && { _usage ; exit 1 ; }

OPTIND=1
while getopts ":uh" opt ; do
    case "${opt}" in
        u) RENAME2UUID="Y" ;;
        h) _usage ; exit 0 ;;
        *) echo "Error: Bad option -${OPTARG}" ; _usage ; exit 1 ;;
    esac
done
shift "$((OPTIND-1))"

_check_for_lto_index_dir
LTO_LOGS="${LTO_INDEX_DIR}"
OLD_LOGS="${LTO_LOGS}/old/"

if [[ ! -d "${OLD_LOGS}" ]] ; then
    mkdir -p "${OLD_LOGS}"
fi

if [[ "${RENAME2UUID}" = "Y" ]] ; then
    ls -1t "${LTO_LOGS}" | grep "[0-9a-f]\{8\}-[0-9a-f]\{4\}-[0-9a-f]\{4\}-[0-9a-f]\{4\}-[0-9a-f]\{12\}.schema" | while read UUID_NAME ; do
        UUID_PATH="${LTO_LOGS}/${UUID_NAME}"
        NAME_PATH="${LTO_LOGS}/$(xml sel -t -m "/ltfsindex" -v directory[1]/name "${LTO_LOGS}/${UUID_NAME}").schema"
        if [[ -f "${NAME_PATH}" ]] ; then
            UUID_UPDATETIME=$(xml sel -t -m "/ltfsindex" -v updatetime "${UUID_PATH}")
            NAME_UPDATETIME=$(xml sel -t -m "/ltfsindex" -v updatetime "${NAME_PATH}")
            if [[ "$UUID_UPDATETIME" < "$NAME_UPDATETIME" ]] ; then
                mv -v "${UUID_PATH}" "${OLD_LOGS}"
            else
                mv -v "${NAME_PATH}" "${OLD_LOGS}"
                mv -v -n "${UUID_PATH}" "${NAME_PATH}"
            fi
        else
            mv -v -n "${UUID_PATH}" "${NAME_PATH}"
        fi
    done
fi