cache-apt-pkgs-action/install_and_cache_pkgs.sh

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#!/bin/bash
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# Fail on any error.
set -e
# Include library.
script_dir="$(dirname -- "$(realpath -- "${0}")")"
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source "${script_dir}/lib.sh"
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# Directory that holds the cached packages.
cache_dir="${1}"
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# List of the packages to use.
input_packages="${@:2}"
# Trim commas, excess spaces, and sort.
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normalized_packages="$(normalize_package_list "${input_packages}")"
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package_count=$(wc -w <<< "${normalized_packages}")
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log "Clean installing and caching ${package_count} package(s)."
log "Package list:"
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for package in ${normalized_packages}; do
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log "- ${package}"
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done
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log -n "Updating APT package list..."
sudo apt-get update > /dev/null
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echo "done."
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# Strictly contains the requested packages.
manifest_main=""
# Contains all packages including dependencies.
manifest_all=""
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log "Clean installing and caching ${package_count} packages..."
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for package in ${normalized_packages}; do
read package_name package_ver < <(get_package_name_ver "${package}")
# Comma delimited name:ver pairs in the main requested packages manifest.
manifest_main="${manifest_main}${package_name}:${package_ver},"
all_packages="$(apt-get install --dry-run --yes "${package_name}" | grep "^Inst" | awk '{print $2}')"
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dep_packages="$(echo ${all_packages} | grep -v "${package_name}" | tr '\n' ,)"
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log "- ${package_name}"
log " * Version: ${package_ver}"
log " * Dependencies: ${dep_packages:0:-1}"
log -n " * Installing..."
# Zero interaction while installing or upgrading the system via apt.
sudo DEBIAN_FRONTEND=noninteractive apt-get --yes install "${package}" > /dev/null
echo "done."
for cache_package in ${all_packages}; do
cache_filepath="${cache_dir}/${cache_package}.tar.gz"
if test ! -f "${cache_filepath}"; then
read cache_package_name cache_package_ver < <(get_package_name_ver "${cache_package}")
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log -n " * Caching ${cache_package_name} to ${cache_filepath}..."
# Pipe all package files (no folders) to Tar.
dpkg -L "${cache_package_name}" |
while IFS= read -r f; do
if test -f $f || test -L $f; then echo "${f:1}"; fi; #${f:1} removes the leading slash that Tar disallows
done |
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xargs tar -czf "${cache_filepath}" -C /
echo "done (compressed size $(du -k "${cache_filepath}" | cut -f1))."
fi
# Comma delimited name:ver pairs in the all packages manifest.
manifest_all="${manifest_all}${cache_package_name}:${cache_package_ver},"
done
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done
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log "done."
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manifest_all_filepath="${cache_dir}/manifest_all.log"
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log -n "Writing all packages manifest to ${manifest_all_filepath}..."
# Remove trailing comma and write to manifest_all file.
echo "${manifest_all:0:-1}" > "${manifest_all_filepath}"
echo "done."
manifest_main_filepath="${cache_dir}/manifest_main.log"
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log -n "Writing main requested packages manifest to ${manifest_main_filepath}..."
# Remove trailing comma and write to manifest_main file.
echo "${manifest_main:0:-1}" > "${manifest_main_filepath}"
echo "done."