95 lines
3.7 KiB
Bash
Executable File
95 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Hook for updating local configuration on each pull. This will automatically put files in their
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# right places, but will not enable or start any services automatically; this is left to the user.
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#
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# Move this to '.git/hooks/post-merge' to have to run automatically after every 'git pull' operation.
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# The script assumes write access to host directories, and a CoreOS host. Don't run on other systems!
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set -euo pipefail
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shopt -s globstar
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# Global configuration variables.
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TEMP_CONFIG_PATH="$(git -C "$(dirname "$0")" rev-parse --show-toplevel)"
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HOST_CONFIG_PATH="/etc/coreos-home-server"
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SYSTEMD_CONFIG_PATH="/etc/systemd/system"
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# Synchronize CoreOS home-server configuration for specific path.
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function sync-coreos-config() {
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local hostdir="$1"
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local dirname="$(basename "$hostdir")"
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# Check if any remote configuration exists for the name given.
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if ! compgen -G "$TEMP_CONFIG_PATH"/*/"$dirname" > /dev/null; then
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printf "configuration not found, skipping.\n"
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return
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fi
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# Collect remote configuration files across base directories.
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for tmpdir in "$TEMP_CONFIG_PATH"/*/"$dirname"; do
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# Update timestamp for temporary file to match last commit time, in order to ensure correct partial updates.
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for f in "$tmpdir/"**; do
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# Skip directories, as updating their commit times will have all files within be synchronized.
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if test -d "$f"; then
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continue
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fi
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touch -t "$(cd "$tmpdir" && git log -n 1 --pretty=format:%cd --date=format-local:%Y%m%d%H%M.%S --date-order -- "$f")" -- "$f"
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done
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# Link source files into temporary destination directory.
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mkdir --parents "$TEMP_CONFIG_PATH/.tmp/$dirname"
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cp --archive --force --target-directory "$TEMP_CONFIG_PATH/.tmp/$dirname" "$tmpdir"/.
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done
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# Remove files that only exist in local configuration.
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for f in $(comm -23 <(cd "$hostdir"; find . | sort) <(cd "$TEMP_CONFIG_PATH/.tmp/$dirname"; find . | sort)); do
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# Don't delete environment files, as these are required for active services.
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if test "$(basename --suffix=.env "$f")" != "$(basename "$f")"; then
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continue
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fi
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rm --verbose --recursive --force "$(realpath --quiet "$hostdir/$f")"
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done
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# Copy files from temporary directory to host configuration directory.
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(cd "$TEMP_CONFIG_PATH/.tmp/$dirname" && cp --verbose --recursive --update --target-directory "$hostdir" -- *)
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printf "done.\n"
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}
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# Synchronize systemd service files from CoreOS home-server configuration.
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function sync-systemd-services() {
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local buffer="" tmp
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# Copy service files if newer than destination.
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for src in "$HOST_CONFIG_PATH"/*/systemd/*; do
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tmp="$(cp --verbose --recursive --update --target-directory "$SYSTEMD_CONFIG_PATH" "$src")"
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if test -n "$tmp"; then buffer="${buffer}"$'\n'"${tmp}"; fi
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done
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printf "%s\ndone.\n" "$buffer"
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if test -n "$buffer"; then return 0; else return 1; fi
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}
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# Entrypoint for script. Process all services present in host configuration against remote state.
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function main() {
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# Synchronize all existing CoreOS home-server configuration.
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for hostdir in "$HOST_CONFIG_PATH"/*; do
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if test ! -d "$hostdir"; then
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continue
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fi
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printf "Synchronizing host configuration for '%s'... " "$hostdir"
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sync-coreos-config "$hostdir"
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done
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# Synchronize systemd services from local CoreOS home-server configuration.
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printf "Synchronizing systemd service files... "
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if sync-systemd-services; then
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printf "Reloading systemd daemon after service updates...\n"
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systemctl daemon-reload
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fi
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}
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main "$@"
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