Standardize syntax, name casing and fix package versioning feature.

This commit is contained in:
awalsh128 2023-03-23 20:20:24 -07:00
parent bd5455834e
commit 971da5988a
4 changed files with 76 additions and 72 deletions

View file

@ -6,7 +6,7 @@ set -e
# Debug mode for diagnosing issues.
# Setup first before other operations.
debug="${2}"
test ${debug} == "true" && set -x
test "${debug}" = "true" && set -x
# Include library.
script_dir="$(dirname -- "$(realpath -- "${0}")")"
@ -18,17 +18,20 @@ cache_dir="${1}"
# List of the packages to use.
input_packages="${@:3}"
# Trim commas, excess spaces, and sort.
normalized_packages="$(normalize_package_list "${input_packages}")"
# Trim commas, excess spaces, sort, and version syntax.
#
# NOTE: Unless specified, all APT package listings of name and version use
# colon delimited and not equals delimited syntax (i.e. <name>[:=]<ver>).
packages="$(get_normalized_package_list "${input_packages}")"
package_count=$(wc -w <<< "${normalized_packages}")
package_count=$(wc -w <<< "${packages}")
log "Clean installing and caching ${package_count} package(s)."
log_empty_line
manifest_main=""
log "Package list:"
for package in ${normalized_packages}; do
for package in ${packages}; do
read package_name package_ver < <(get_package_name_ver "${package}")
manifest_main="${manifest_main}${package_name}:${package_ver},"
log "- ${package_name}:${package_ver}"
@ -63,8 +66,9 @@ manifest_all=""
install_log_filepath="${cache_dir}/install.log"
log "Clean installing ${package_count} packages..."
apt_syntax_packages="$(convert_action_to_apt_syntax_packages "${packages}")"
# Zero interaction while installing or upgrading the system via apt.
sudo DEBIAN_FRONTEND=noninteractive apt-fast --yes install ${normalized_packages} > "${install_log_filepath}"
sudo DEBIAN_FRONTEND=noninteractive apt-fast --yes install ${apt_syntax_packages} > "${install_log_filepath}"
log "done"
log "Installation log written to ${install_log_filepath}"
@ -78,20 +82,20 @@ done
log_empty_line
installed_package_count=$(wc -w <<< "${installed_packages}")
log "Caching ${installed_package_count} installed packages..."
installed_packages_count=$(wc -w <<< "${installed_packages}")
log "Caching ${installed_packages_count} installed packages..."
for installed_package in ${installed_packages}; do
cache_filepath="${cache_dir}/${installed_package}.tar"
# Sanity test in case APT enumerates duplicates.
if test ! -f "${cache_filepath}"; then
read installed_package_name installed_package_ver < <(get_package_name_ver "${installed_package}")
log " * Caching ${installed_package_name} to ${cache_filepath}..."
read package_name package_ver < <(get_package_name_ver "${installed_package}")
log " * Caching ${package_name} to ${cache_filepath}..."
# Pipe all package files (no folders) and installation control data to Tar.
{ dpkg -L "${installed_package_name}" \
& get_install_filepath "" "${package_name}" "preinst" \
& get_install_filepath "" "${package_name}" "postinst"; } |
{ dpkg -L "${package_name}" \
& get_install_script_filepath "" "${package_name}" "preinst" \
& get_install_script_filepath "" "${package_name}" "postinst"; } |
while IFS= read -r f; do test -f "${f}" -o -L "${f}" && get_tar_relpath "${f}"; done |
xargs -I {} echo \'{}\' | # Single quotes ensure literals like backslash get captured.
sudo xargs tar -cf "${cache_filepath}" -C /
@ -100,7 +104,7 @@ for installed_package in ${installed_packages}; do
fi
# Comma delimited name:ver pairs in the all packages manifest.
manifest_all="${manifest_all}${installed_package_name}:${installed_package_ver},"
manifest_all="${manifest_all}${package_name}:${package_ver},"
done
log "done (total cache size $(du -h ${cache_dir} | tail -1 | awk '{print $1}'))"

96
lib.sh
View file

@ -1,5 +1,17 @@
#!/bin/bash
###############################################################################
# Convert the APT syntax package (= delimited) to action syntax package
# (: delimited).
# Arguments:
# APT syntax package, with or without version.
# Returns:
# Action syntax package, with or without version.
###############################################################################
function convert_action_to_apt_syntax_packages() {
echo ${1} | sed 's/:/=/g'
}
###############################################################################
# Execute the Debian install script.
# Arguments:
@ -13,7 +25,7 @@
function execute_install_script {
local package_name=$(basename ${2} | awk -F\: '{print $1}')
local install_script_filepath=$(\
get_install_filepath "${1}" "${package_name}" "${3}")
get_install_script_filepath "${1}" "${package_name}" "${3}")
if test ! -z "${install_script_filepath}"; then
log "- Executing ${install_script_filepath}..."
# Don't abort on errors; dpkg-trigger will error normally since it is
@ -23,19 +35,37 @@ function execute_install_script {
fi
}
###############################################################################
# Gets the Debian install script filepath.
# Arguments:
# Root directory to search from.
# Name of the unqualified package to search for.
# Extension of the installation script (preinst, postinst)
# Returns:
# Filepath of the script file, otherwise an empty string.
###############################################################################
function get_install_script_filepath {
# Filename includes arch (e.g. amd64).
local filepath="$(\
ls -1 ${1}var/lib/dpkg/info/${2}*.${3} 2> /dev/null \
| grep -E ${2}'(:.*)?.'${3} | head -1 || true)"
test "${filepath}" && echo "${filepath}"
}
###############################################################################
# Gets a list of installed packages from a Debian package installation log.
# Arguments:
# The filepath of the Debian install log.
# Returns:
# The list of space delimited pairs with each pair colon delimited.
# <name>:<version> <name:version>...
# The list of colon delimited action syntax pairs with each pair equals
# delimited. <name>:<version> <name>:<version>...
###############################################################################
function get_installed_packages {
local install_log_filepath="${1}"
local regex="^Unpacking ([^ :]+)([^ ]+)? (\[[^ ]+\]\s)?\(([^ )]+)"
local dep_packages=""
while read -r line; do
# ${regex} should be unquoted since it isn't a literal.
if [[ "${line}" =~ ${regex} ]]; then
dep_packages="${dep_packages}${BASH_REMATCH[1]}:${BASH_REMATCH[4]} "
else
@ -51,48 +81,38 @@ function get_installed_packages {
}
###############################################################################
# Splits a fully qualified package into name and version.
# Splits a fully action syntax APT package into the name and version.
# Arguments:
# The colon delimited package pair or just the package name.
# The action syntax colon delimited package pair or just the package name.
# Returns:
# The package name and version pair.
###############################################################################
function get_package_name_ver {
local ORIG_IFS="${IFS}"
IFS=\: read name ver <<< "${1}"
# If version not found in the fully qualified package value.
if test -z "${ver}"; then
ver="$(grep "Version:" <<< "$(apt-cache show ${name})" | awk '{print $2}')"
fi
echo "${name}" "${ver}"
IFS="${ORIG_IFS}"
}
###############################################################################
# Gets the package name from the cached package filepath in the
# path/to/cache/dir/<name>:<version>.tar format.
# Sorts given packages by name and split on commas and/or spaces.
# Arguments:
# Filepath to the cached packaged.
# The comma and/or space delimited list of packages.
# Returns:
# The package name.
# Sorted list of space delimited packages.
###############################################################################
function get_package_name_from_cached_filepath {
basename ${cached_pkg_filepath} | awk -F\: '{print $1}'
}
###############################################################################
# Gets the Debian install script file location.
# Arguments:
# Root directory to search from.
# Name of the unqualified package to search for.
# Extension of the installation script (preinst, postinst)
# Returns:
# Filepath of the script file, otherwise an empty string.
###############################################################################
function get_install_filepath {
# Filename includes arch (e.g. amd64).
local filepath="$(\
ls -1 ${1}var/lib/dpkg/info/${2}*.${3} 2> /dev/null \
| grep -E ${2}'(:.*)?.'${3} | head -1 || true)"
test "${filepath}" && echo "${filepath}"
function get_normalized_package_list {
# Remove commas, and block scalar folded backslashes.
local stripped=$(echo "${1}" | sed 's/[,\]/ /g')
# Remove extraneous spaces at the middle, beginning, and end.
local trimmed="$(\
echo "${stripped}" \
| sed 's/\s\+/ /g; s/^\s\+//g; s/\s\+$//g')"
echo ${trimmed} | tr ' ' '\n' | sort | tr '\n' ' '
}
###############################################################################
@ -117,26 +137,6 @@ function log_err { >&2 echo "$(date +%H:%M:%S)" "${@}"; }
function log_empty_line { echo ""; }
###############################################################################
# Sorts given packages by name and split on commas and/or spaces.
# Arguments:
# The comma and/or space delimited list of packages.
# Returns:
# Sorted list of space delimited packages.
###############################################################################
function normalize_package_list {
# Remove commas, and block scalar folded backslashes.
local stripped=$(echo "${1}" | sed 's/[,\]/ /g')
# Remove extraneous spaces at the middle, beginning, and end.
local trimmed="$(\
echo "${stripped}" \
| sed 's/\s\+/ /g; s/^\s\+//g; s/\s\+$//g')"
local sorted="$(echo ${trimmed} | tr ' ' '\n' | sort | tr '\n' ' ')"
# Convert colon delimited package version pairs to APT syntax (i.e. <pkg>=<ver>).
local versioned="$(echo $sorted | sed 's/:/=/g')"
echo "${sorted}"
}
###############################################################################
# Validates an argument to be of a boolean value.
# Arguments:

View file

@ -23,12 +23,12 @@ execute_install_scripts="${4}"
# Debug mode for diagnosing issues.
debug="${5}"
test ${debug} == "true" && set -x
test "${debug}" = "true" && set -x
# List of the packages to use.
packages="${@:6}"
if [ "$cache_hit" == true ]; then
if test "${cache_hit}" = "true"; then
${script_dir}/restore_pkgs.sh "${cache_dir}" "${cache_restore_root}" "${execute_install_scripts}" "${debug}"
else
${script_dir}/install_and_cache_pkgs.sh "${cache_dir}" "${debug}" ${packages}

View file

@ -40,22 +40,22 @@ log "done"
log_empty_line
# Only search for archived results. Manifest and cache key also live here.
cached_pkg_filepaths=$(ls -1 "${cache_dir}"/*.tar | sort)
cached_pkg_filecount=$(echo ${cached_pkg_filepaths} | wc -w)
cached_filepaths=$(ls -1 "${cache_dir}"/*.tar | sort)
cached_filecount=$(echo ${cached_filepaths} | wc -w)
log "Restoring ${cached_pkg_filecount} packages from cache..."
for cached_pkg_filepath in ${cached_pkg_filepaths}; do
log "Restoring ${cached_filecount} packages from cache..."
for cached_filepath in ${cached_filepaths}; do
log "- $(basename "${cached_pkg_filepath}") restoring..."
sudo tar -xf "${cached_pkg_filepath}" -C "${cache_restore_root}" > /dev/null
log "- $(basename "${cached_filepath}") restoring..."
sudo tar -xf "${cached_filepath}" -C "${cache_restore_root}" > /dev/null
log " done"
# Execute install scripts if available.
if test ${execute_install_scripts} == "true"; then
# May have to add more handling for extracting pre-install script before extracting all files.
# Keeping it simple for now.
execute_install_script "${cache_restore_root}" "${cached_pkg_filepath}" preinst install
execute_install_script "${cache_restore_root}" "${cached_pkg_filepath}" postinst configure
execute_install_script "${cache_restore_root}" "${cached_filepath}" preinst install
execute_install_script "${cache_restore_root}" "${cached_filepath}" postinst configure
fi
done
log "done"