mirror of
https://github.com/awalsh128/cache-apt-pkgs-action.git
synced 2026-03-28 15:08:50 +00:00
5bddecf9cd
After cache restore, dpkg had no record of the installed packages because: 1. Only preinst/postinst scripts were cached from /var/lib/dpkg/info/, missing .list, .md5sums, .conffiles, and other metadata files 2. The dpkg status database (/var/lib/dpkg/status) was never updated This meant dpkg -s, apt list --installed, and anything checking package state would not see the restored packages. Fix: - Cache all /var/lib/dpkg/info/<package>.* files (not just install scripts) - Save each package's dpkg status entry to a .dpkg-status file - On restore, append status entries to /var/lib/dpkg/status (skipping packages that are already registered) Adds tests verifying dpkg -s reports packages as installed after both fresh install and cache restore. Co-developed-by: Claude Code v2.1.58 (claude-opus-4-6)
89 lines
3.1 KiB
Bash
Executable file
89 lines
3.1 KiB
Bash
Executable file
#!/bin/bash
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# Fail on any error.
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set -e
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# Debug mode for diagnosing issues.
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# Setup first before other operations.
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debug="${4}"
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test ${debug} == "true" && set -x
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# Include library.
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script_dir="$(dirname -- "$(realpath -- "${0}")")"
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source "${script_dir}/lib.sh"
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# Directory that holds the cached packages.
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cache_dir="${1}"
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# Root directory to untar the cached packages to.
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# Typically filesystem root '/' but can be changed for testing.
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cache_restore_root="${2}"
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test -d ${cache_restore_root} || mkdir ${cache_restore_root}
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# Cache and execute post install scripts on restore.
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execute_install_scripts="${3}"
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cache_filepaths="$(ls -1 "${cache_dir}" | sort)"
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log "Found $(echo ${cache_filepaths} | wc -w) files in the cache."
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for cache_filepath in ${cache_filepaths}; do
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log "- "$(basename ${cache_filepath})""
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done
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log_empty_line
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log "Reading from main requested packages manifest..."
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for logline in $(cat "${cache_dir}/manifest_main.log" | tr ',' '\n' ); do
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log "- $(echo "${logline}" | tr ':' ' ')"
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done
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log "done"
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log_empty_line
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# Only search for archived results. Manifest and cache key also live here.
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cached_filepaths=$(ls -1 "${cache_dir}"/*.tar 2>/dev/null | sort)
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cached_filecount=$(echo ${cached_filepaths} | wc -w)
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log "Restoring ${cached_filecount} packages from cache..."
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for cached_filepath in ${cached_filepaths}; do
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log "- $(basename "${cached_filepath}") restoring..."
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sudo tar -xf "${cached_filepath}" -C "${cache_restore_root}" > /dev/null
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log " done"
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# Execute install scripts if available.
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if test ${execute_install_scripts} == "true"; then
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# May have to add more handling for extracting pre-install script before extracting all files.
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# Keeping it simple for now.
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execute_install_script "${cache_restore_root}" "${cached_filepath}" preinst install
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execute_install_script "${cache_restore_root}" "${cached_filepath}" postinst configure
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fi
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done
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log "done"
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log_empty_line
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# Register packages with dpkg so they appear as installed.
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# The tar extraction restores dpkg info files (list, md5sums, etc.) but the
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# main status database (/var/lib/dpkg/status) also needs updating.
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dpkg_status_dir="${cache_dir}"
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status_files=$(ls -1 "${dpkg_status_dir}"/*.dpkg-status 2>/dev/null || true)
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if test -n "${status_files}"; then
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log "Registering restored packages with dpkg..."
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for status_file in ${status_files}; do
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pkg_name=$(head -1 "${status_file}" | sed 's/^Package: //')
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# Skip if dpkg already knows about this package (e.g., it was pre-installed).
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if dpkg -s "${pkg_name}" > /dev/null 2>&1; then
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existing_status=$(dpkg -s "${pkg_name}" 2>/dev/null | grep '^Status:' | head -1)
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if echo "${existing_status}" | grep -q 'install ok installed'; then
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log "- ${pkg_name} already registered, skipping."
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continue
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fi
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fi
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# Append the status entry (with blank line separator) to the dpkg database.
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echo "" | sudo tee -a "${cache_restore_root}var/lib/dpkg/status" > /dev/null
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cat "${status_file}" | sudo tee -a "${cache_restore_root}var/lib/dpkg/status" > /dev/null
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log "- ${pkg_name} registered."
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done
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log "done"
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fi
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