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  • Committer: Scott Moser
  • Date: 2016-03-14 16:55:34 UTC
  • Revision ID: smoser@ubuntu.com-20160314165534-6gf0d2zdeoya6xwg
https://launchpad.net/bugs/1549403
cloud-localds: support --vendor-data, network-config and 'tar'
output.  This is in support of the work going into cloud-init
under LP: #1549403.

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bin/cloud-localds
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   Create a disk for cloud-init to utilize nocloud
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   options:
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     -h | --help            show usage
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     -d | --disk-format D   disk format to output. default: raw
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     -H | --hostname    H   set hostname in metadata to H
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     -f | --filesystem  F   filesystem format (vfat or iso), default: iso9660
 
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     -h | --help             show usage
 
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     -d | --disk-format D    disk format to output. default: raw
 
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                             can be anything supported by qemu-img or
 
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                             tar, tar-seed-local, tar-seed-net
 
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     -H | --hostname    H    set hostname in metadata to H
 
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     -f | --filesystem  F    filesystem format (vfat or iso), default: iso9660
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     -i | --interfaces  F   write network interfaces file into metadata
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     -m | --dsmode      M   add 'dsmode' ('local' or 'net') to the metadata
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                            default in cloud-init is 'net', meaning network is
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                            required.
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     -v | --verbose         increase verbosity
 
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     -i | --interfaces  F    write network interfaces file into metadata
 
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     -N | --network-config F write network config file to local datasource
 
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     -m | --dsmode      M    add 'dsmode' ('local' or 'net') to the metadata
 
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                             default in cloud-init is 'net', meaning network is
 
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                             required.
 
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     -V | --vendor-data F    vendor-data file
 
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     -v | --verbose          increase verbosity
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   Note, --dsmode, --hostname, and --interfaces are incompatible
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   with metadata.
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        error "${@}"
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}
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short_opts="hH:i:d:f:m:o:v"
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long_opts="disk-format:,dsmode:,filesystem:,help,hostname:,interfaces:,output:,verbose"
 
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short_opts="hH:i:d:f:m:N:o:V:v"
 
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long_opts="disk-format:,dsmode:,filesystem:,help,hostname:,interfaces:,"
 
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long_opts="${long_opts}network-config:,output:,vendor-data:,verbose"
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getopt_out=$(getopt --name "${0##*/}" \
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        --options "${short_opts}" --long "${long_opts}" -- "$@") &&
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        eval set -- "${getopt_out}" ||
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output=""
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userdata=""
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metadata=""
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filesystem=$DEF_FILESYSTEM
 
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vendordata=""
 
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filesystem=""
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diskformat=$DEF_DISK_FORMAT
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interfaces=_unset
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dsmode=""
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hostname=""
 
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ncname="network-config"
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while [ $# -ne 0 ]; do
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        cur=${1}; next=${2};
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        case "$cur" in
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                -h|--help) Usage ; exit 0;;
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                -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
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                -d|--disk-format) diskformat=$next; shift;;
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                -f|--filesystem) filesystem=$next; shift;;
 
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                -H|--hostname) hostname=$next; shift;;
 
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                -i|--interfaces) interfaces=$next; shift;;
 
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                -N|--network-config) netcfg=$next; shift;;
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                -m|--dsmode) dsmode=$next; shift;;
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                -i|--interfaces) interfaces=$next; shift;;
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                -H|--hostname) hostname=$next; shift;;
 
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                -v|--verbose) VERBOSITY=$((${VERBOSITY}+1));;
 
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                -V|--vendor-data) vendordata="$next";;
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                --) shift; break;;
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        esac
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        shift;
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                        "--interfaces, --hostname, --dsmode"
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fi
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case "$diskformat" in
 
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        tar|tar-seed-local|tar-seed-net)
 
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                if [ "${filesystem:-tar}" != "tar" ]; then
 
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                        fail "diskformat=tar is incompatible with filesystem"
 
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                fi
 
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                filesystem="$diskformat"
 
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                ;;
 
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        tar*)
 
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                fail "supported 'tar' formats are tar, tar-seed-local, tar-seed-net"
 
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esac
 
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if [ -z "$filesystem" ]; then
 
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        filesystem="$DEF_FILESYSTEM"
 
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fi
 
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[ "$interfaces" = "_unset" -o -r "$interfaces" ] ||
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        fail "$interfaces: not a readable file"
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        fail "failed to make tempdir"
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trap cleanup EXIT
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files=( "${TEMP_D}/user-data" "${TEMP_D}/meta-data" )
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if [ -n "$metadata" ]; then
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        cp "$metadata" "$TEMP_D/meta-data" || fail "$metadata: failed to copy"
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else
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        printf "{\n%s\n}\n" "$mdata" > "${TEMP_D}/meta-data"
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fi
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if [ -n "$netcfg" ]; then
 
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        cp "$netcfg" "${TEMP_D}/$ncname" ||
 
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                fail "failed to copy network config"
 
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        files[${#files[@]}]="$TEMP_D/$ncname"
 
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fi
 
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if [ -n "$vendordata" ]; then
 
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        cp "$vendordata" "${TEMP_D}/vendor-data" ||
 
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                fail "failed to copy vendor data"
 
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        files[${#files[@]}]="$TEMP_D/vendor-data"
 
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fi
 
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files_rel=( )
 
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for f in "${files[@]}"; do
 
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        files_rel[${#files_rel[@]}]="${f#${TEMP_D}/}"
 
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done
 
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if [ "$userdata" = "-" ]; then
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        cat > "$TEMP_D/user-data" || fail "failed to read from stdin"
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else
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fi
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## alternatively, create a vfat filesystem with same files
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img="$TEMP_D/seed.img"
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truncate --size 100K "$img" || fail "failed truncate image"
 
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img="$TEMP_D/seed-data"
 
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tar_opts=( --owner=root --group=root )
 
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case "$filesytem" in
 
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        iso9660|iso|vfat)
 
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                truncate --size 100K "$img" || fail "failed truncate image";;
 
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esac
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case "$filesystem" in
 
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        tar)
 
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                tar "${tar_opts[@]}" -C "${TEMP_D}" -cf "$img" "${files_rel[@]}" ||
 
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                        fail "failed to create tarball of ${files_rel[*]}"
 
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                ;;
 
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        tar-seed-local|tar-seed-net)
 
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                if [ "$filesystem" = "tar-seed-local" ]; then
 
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                        path="var/lib/cloud/seed/nocloud"
 
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                else
 
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                        path="var/lib/cloud/seed/nocloud-net"
 
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                fi
 
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                mkdir -p "${TEMP_D}/${path}" ||
 
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                        fail "failed making path for seed files"
 
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                mv "${files[@]}" "${TEMP_D}/$path" ||
 
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                        fail "failed moving files"
 
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                tar "${tar_opts[@]}" -C "${TEMP_D}" -cf "$img" "${path}" ||
 
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                        fail "failed to create tarball with $path"
 
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                ;;
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        iso9660|iso)
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                genisoimage  -output "$img" -volid cidata \
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                        -joliet -rock "$TEMP_D/user-data" "$TEMP_D/meta-data" \
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                        > "$TEMP_D/err" 2>&1 ||
 
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                        -joliet -rock "${files[@]}" > "$TEMP_D/err" 2>&1 ||
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                        { cat "$TEMP_D/err" 1>&2; fail "failed to genisoimage"; }
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                ;;
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        vfat)
 
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                truncate --size 100K "$img" || fail "failed truncate image"
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                mkfs.vfat -n cidata "$img" || fail "failed mkfs.vfat"
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                mcopy -oi "$img" "$TEMP_D/user-data" "$TEMP_D/meta-data" :: ||
 
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                mcopy -oi "$img" "${files[@]}" :: ||
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                        fail "failed to copy user-data, meta-data to img"
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                ;;
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        *) fail "unknown filesystem $filesystem";;
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esac
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[ "$output" = "-" ] && output="$TEMP_D/final"
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if [ "$diskformat" != "raw" ]; then
 
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if [ "${diskformat#tar}" != "$diskformat" -o "$diskformat" = "raw" ]; then
 
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        cp "$img" "$output" ||
 
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                fail "failed to copy image to $output"
 
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else
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        qemu-img convert -f raw -O "$diskformat" "$img" "$output" ||
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                fail "failed to convert to disk format $diskformat"
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else
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        cp "$img" "$output" ||
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                fail "failed to copy image to $output"
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fi
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[ "$output" != "$TEMP_D/final" ] || { cat "$output" && output="-"; } ||