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9f8eac6540
Most of this hinges on the --upload option being passed, and it never is any more. Much of it also uses Google Buckets, which we no longer use, save for some GCE-specific bits. Signed-off-by: James Le Cuirot <jlecuirot@microsoft.com>
102 lines
4.1 KiB
Bash
102 lines
4.1 KiB
Bash
# Copyright (c) 2013 The CoreOS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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DEFAULT_IMAGE_COMPRESSION_FORMAT="bz2"
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DEFINE_string image_compression_formats "${DEFAULT_IMAGE_COMPRESSION_FORMAT}" \
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"Compress the resulting images using thise formats. This option acceps a list of comma separated values. Options are: none, bz2, gz, zip, zst"
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DEFINE_boolean only_store_compressed ${FLAGS_TRUE} \
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"Delete input file when compressing, except when 'none' is part of the compression formats or the generic image is the input"
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compress_file() {
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local filepath="$1"
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local compression_format="$2"
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[ ! -f "${filepath}" ] && die "Image file ${filepath} does not exist"
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[ -z "${compression_format}" ] && die "compression format parameter is mandatory"
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case "${compression_format}" in
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"none"|"")
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echo -n "${filepath}"
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return 0
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;;
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"bz2")
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IMAGE_ZIPPER="lbzip2 --compress --keep"
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;;
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"gz")
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IMAGE_ZIPPER="pigz --keep"
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;;
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"zip")
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IMAGE_ZIPPER="pigz --keep --zip"
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;;
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"zst")
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IMAGE_ZIPPER="zstd --format=zstd -k -q --no-progress"
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;;
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*)
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die "Unsupported compression format ${compression_format}"
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;;
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esac
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# Check if symlink in which case we set up a "compressed" symlink
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local compressed_name="${filepath}.${compression_format}"
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if [ -L "${filepath}" ]; then
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# We could also test if the target exists and otherwise do the compression
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# but we might then end up with two different compressed artifacts
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local link_target
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link_target=$(readlink -f "${filepath}")
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local target_basename
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target_basename=$(basename "${link_target}")
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ln -fs "${target_basename}.${compression_format}" "${compressed_name}"
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else
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${IMAGE_ZIPPER} -f "${filepath}" 2>&1 >/dev/null || die "failed to compress ${filepath}"
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fi
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echo -n "${compressed_name}"
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}
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compress_disk_images() {
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# An array of files that are to be evaluated and possibly compressed if images are
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# among them.
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local -n local_files_to_evaluate="$1"
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info "Compressing ${#local_files_to_evaluate[@]} images"
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# We want to compress images, but we also want to remove the uncompressed files
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# from the list of uploadable files.
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for filename in "${local_files_to_evaluate[@]}"; do
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if [[ "${filename}" =~ \.(img|bin|vdi|vhd|vhdx|vmdk|qcow[2]?)$ ]]; then
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# Parse the formats as an array. This will yield an extra empty
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# array element at the end.
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readarray -td, FORMATS<<<"${FLAGS_image_compression_formats},"
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# unset the last element
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unset 'FORMATS[-1]'
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# An associative array we set an element on whenever we process a format.
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# This way we don't process the same format twice. A unique for array elements.
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# (But first we need to unset the previous loop or we can only compress a single
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# file per list of files).
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unset processed_format
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declare -A processed_format
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for format in "${FORMATS[@]}";do
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if [ -z "${processed_format[${format}]}" ]; then
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info "Compressing ${filename##*/} to ${format}"
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COMPRESSED_FILENAME=$(compress_file "${filename}" "${format}")
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processed_format["${format}"]=1
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fi
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done
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# If requested, delete the input file after compression (only if 'none' is not part of the formats)
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# Exclude the generic image and update payload because they are needed for generating other formats
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if [ "${FLAGS_only_store_compressed}" -eq "${FLAGS_TRUE}" ] &&
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[ "${filename##*/}" != "flatcar_production_image.bin" ] &&
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[ "${filename##*/}" != "flatcar_production_update.bin" ] &&
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! echo "${FORMATS[@]}" | grep -q "none"; then
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info "Removing ${filename}"
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rm "${filename}"
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else
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info "Keeping ${filename}"
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fi
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fi
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done
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}
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