Various improvements
This commit is contained in:
@ -1,6 +1,6 @@
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#!/usr/bin/env bash
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# boring-backup -- backup files and databases.
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# boring_backup -- backup files and databases.
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# Copyright (c) 2022 ge <https://nixhacks.net/>
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#
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# This program is free software: you can redistribute it and/or modify
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@ -16,12 +16,7 @@
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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__version='0.1.0'
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__config=
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__verbose=
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__log_file='./log.txt'
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__pid_file='/tmp/boring-backup.pid'
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VERSION='0.1.0'
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LIBRARY="${LIBRARY:-./lib}"
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# Source library
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@ -30,24 +25,47 @@ if [ -f "$LIBRARY/lib.sh" ]; then
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. "$LIBRARY/lib.sh"
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else
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echo "Error: Cannot source library $LIBRARY/lib.sh: No such file" >&2
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__exit=1
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fi
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print_help() {
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cat <<- EOF
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Backup files and databases.
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printf << EOF \
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"USAGE:
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Usage: $0 [-cvlphV] FILES..
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$0 [-hVvs] [-c \033[4mfile\033[0m] [-l \033[4mfile\033[0m] \
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[-p \033[4mfile\033[0m] file ...
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Options:
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-c, --config config file.
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-v, --verbose verbose output.
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-l, --log-file log file [default: $__log_file]
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-p, --pid-file PID file [default: $__pid_file]
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-h, --help print this help messagea and exit.
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-V, --version print version and exit.
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OPTIONS:
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Environment:
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LIBRARY path to bb library [current: $LIBRARY]
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-h, --help
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Print this help message and exit.
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-V, --version
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Print version and exit.
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-v, --verbose
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Enable verbose output.
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-c, --config=\033[4mfile\033[0m
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Path to configuration file. Default: ~/.config/boring_backup
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Configuration file actually is Bash-script similar to backup
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script. See boring_backup(1) CONFIGURATION.
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-l, --log-file=\033[4mfile\033[0m
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Log file.
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-s, --use-syslog
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Write log into syslog via logger instead of log file. This option
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is incompatible with --log-file option and log_date_format variable.
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-p, --pid-file=\033[4mfile\033[0m
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PID file. Default: /tmp/boring_backup.pid
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ENVIRONMENT:
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LIBRARY Path to boring_backup library. Current path is
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$LIBRARY
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"
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EOF
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}
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@ -88,33 +106,70 @@ for args in "$@"; do
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shift
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case "$args" in
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--*)
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set -- "$@" "$args";; # save long options
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set -- "$@" "$args" # save long options
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;;
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-*)
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args="$(echo "${args:1}" | grep -o . | xargs -I {} echo -n '-{} ')"
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args="$(echo "${args:1}" |
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grep -o . | xargs -I {} echo -n '-{} ')"
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# shellcheck disable=SC2086
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set -- "$@" $args;; # 'args' must be unquoted!
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set -- "$@" $args # 'args' must be unquoted!
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;;
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*)
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set -- "$@" "$args";; # save positional arguments
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set -- "$@" "$args" # save positional arguments
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;;
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esac
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done
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# Final arguments parser
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while (( "$#" )); do
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case "$1" in
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-h|--help)
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print_help
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exit 0
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;;
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-V|--version)
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echo "$VERSION"
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exit 0
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;;
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-v|--verbose)
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verbose_output=1
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shift
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;;
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-c|--config|--config=*)
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optval "$1" "$2"; __config="$val"; shift "$sft";;
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-v|--verbose) __verbose=1; shift;;
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optval "$1" "$2"
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bb_config="$val"
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shift "$sft"
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;;
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-l|--log-file|--log-file=*)
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optval "$1" "$2"; __log_file="$val"; shift "$sft";;
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optval "$1" "$2"
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log_file="$val"
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shift "$sft"
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;;
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-s|--use-syslog)
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use_syslog=1
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shift
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;;
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-p|--pid-file|--pid-file=*)
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optval "$1" "$2"; __pid_file="$val"; shift "$sft";;
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-h|--help) print_help; exit 0;;
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-V|--version) echo "$__version"; exit 0;;
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-*) echo "Error: Unknown option: $1" >&2; exit 1;;
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*) __args+=("$1"); shift;; # Save positional args
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optval "$1" "$2"
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pid_file="$val"
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shift "$sft"
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;;
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-*)
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echo "Error: Unknown option: $1" >&2
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exit 1
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;;
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*)
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__args+=("$1") # Save positional args
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shift
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;;
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esac
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done
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# -- Set defaults -- #
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log_file="${log_file:-./log.txt}"
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bb_config="${bb_config:-$HOME/.config/boring_backup}"
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pid_file="${pid_file:-/tmp/boring_backup.pid}"
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# Exit if library is not loaded
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if ! declare -F -- log > /dev/null 2>&1; then
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exit 1
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@ -127,20 +182,20 @@ fi
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log -V "Backup STARTED"
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# Check PID file
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if [ -e "$__pid_file" ]; then
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if [ -e "$pid_file" ]; then
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# shellcheck disable=SC2009
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# shellcheck disable=SC2143
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if [ -z "$(ps ax -o pid | grep "$(cat "$__pid_file")")" ]; then
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log -p "Process $(cat "$__pid_file") died." >&2
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rm "$__pid_file"
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if [ -z "$(ps ax -o pid | grep "$(cat "$pid_file")")" ]; then
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log -p "Process $(cat "$pid_file") died." >&2
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rm "$pid_file"
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else
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echo "Process $(cat "$__pid_file") still running." >&2
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echo "Process $(cat "$pid_file") still running." >&2
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exit 1
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fi
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fi
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# Touch PID file
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echo "$$" > "$__pid_file"
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echo "$$" > "$pid_file"
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# Scripts counter.
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__count="${#__args[@]}" # count
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@ -149,9 +204,12 @@ __i=1 # iterator
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# Startup log.
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date +'Start: %d %b %Y %T %z'
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log -p "Library path: $LIBRARY"
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log -p "Log file: $__log_file"
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log -p "Configuration file:" \
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"$([ "$__config" ] || echo not specified && echo "$__config")"
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log -p "Log file: $log_file"
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log -p "Configuration file:" "$(\
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if [ -f "$bb_config" ];
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then echo "$bb_config";
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else echo not specified;
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fi)"
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log -p "Total scripts: $__count"
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log "Scripts to process (${__count}): ${__args[*]}"
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@ -171,7 +229,7 @@ for script in "${__args[@]}"; do
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# Config can ovewrite script functions and variables
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# shellcheck source=/dev/null
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[ -n "$__config" ] && . "$__config"
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[ -f "$bb_config" ] && . "$bb_config"
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# --- Run user script -- #
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@ -208,17 +266,10 @@ for script in "${__args[@]}"; do
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# Unset user defined variables
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unset compression
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unset name_prefix
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unset name_date_format
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unset s3cmd_options
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unset s3cmd_config
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unset s3_access_key
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unset s3_secret_key
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unset s3_region
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unset s3_host
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unset s3_host_bucket
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unset tar_options
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unset tar_exclude
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unset name_prefix name_date_format name_prefix name_suffix
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unset s3cmd_config s3cmd_options
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unset s3_access_key s3_secret_key s3_region s3_host s3_host_bucket
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unset tar_options tar_exclude
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unset mysqldump_options
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unset pg_dump_options
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done
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@ -227,4 +278,6 @@ echo -e "\nBackup [Done]"
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log -V "Backup FINISHED"
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# Remove PID file
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rm "$__pid_file"
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rm "$pid_file"
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exit "${__exit:-0}"
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@ -25,7 +25,6 @@ tgt_s3cmd() {
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log "Run handler ${FUNCNAME[0]}()"
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local uri
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local src_path
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uri="$1"
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@ -44,7 +43,7 @@ tgt_s3cmd() {
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# Set s3cmd comand. See s3cmd(1)
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if [ -n "$s3cmd_config" ]; then
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# Use configuration file
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# shellcheck disable=SC2154
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# shellcheck disable=SC2154,SC2086
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set -- s3cmd $s3cmd_options --config "$s3cmd_config" \
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put "${backups[@]}" "$uri"
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elif [ -n "$s3_access_key" ] && \
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@ -54,7 +53,7 @@ tgt_s3cmd() {
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then
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s3_region="${s3_region:-na}" # fallback to 'no available' region
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# Use parameters provided from backup script
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# shellcheck disable=SC2154
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# shellcheck disable=SC2154,SC2086
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set -- s3cmd $s3cmd_options \
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--access_key="$s3_access_key" \
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--secret_key="$s3_secret_key" \
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@ -74,6 +73,7 @@ tgt_s3cmd() {
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# ^^^ hide secret_key from output ^^^
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# Upload backups
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# shellcheck disable=SC2154
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if "$@" 2>> "$__log_file"; then
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: # Success
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else
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