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Introduces function that parses the --strategy option into a two dimensional array

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Matthias Kern 2017-11-24 20:16:22 +01:00
parent d13af58252
commit c5c1307062
1 changed files with 34 additions and 0 deletions
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34
rsync_tmbackup.sh
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@ -59,6 +59,26 @@ fn_parse_date() {
esac
}
fn_parse_strategy() {
# The current set (x,y) of the two parameters (after x days, keep y number of backups)
STRATEGY_ARRAY=()
# STRATEGY without comma
NO_COMMAS=$(echo $STRATEGY | sed "s/,//g")
# Extracts an array of three pairs of elements from the --strategy option
IFS=' '
PARAMETER_ARRAY=(`echo ${NO_COMMAS}`)
# Build the expiration strategy matrix
for ((i=0; i<3; i++));
do
STRATEGY_ARRAY=($(echo ${PARAMETER_ARRAY[i]} | sed "s/:/ /g"))
EXPIRATION_STRATEGY_MATRIX[$i,0]=${STRATEGY_ARRAY[0]}
EXPIRATION_STRATEGY_MATRIX[$i,1]=${STRATEGY_ARRAY[1]}
done
}
fn_find_backups() {
fn_run_cmd "find "$DEST_FOLDER" -maxdepth 1 -type d -name \"????-??-??-??????\" -prune | sort -r"
}
@ -148,6 +168,8 @@ DEST_FOLDER=""
EXCLUSION_FILE=""
LOG_DIR="$HOME/.$APPNAME"
AUTO_DELETE_LOG="1"
STRATEGY="1:1, 30:7, 365:30"
declare -A EXPIRATION_STRATEGY_MATRIX
RSYNC_FLAGS="-D --compress --numeric-ids --links --hard-links --one-file-system --itemize-changes --times --recursive --perms --owner --group --stats --human-readable"
@ -170,6 +192,10 @@ while :; do
shift
RSYNC_FLAGS="$1"
;;
--strategy)
shift
STRATEGY="$1"
;;
--log-dir)
shift
LOG_DIR="$1"
@ -350,6 +376,14 @@ while : ; do
# Purge certain old backups before beginning new backup.
# -----------------------------------------------------------------------------
# Parses the --strategy option and creates a matrix of its elements
fn_parse_strategy "$STRATEGY"
# Prints out the expiration strategy matrix (for debugging purpose only)
echo "After" ${EXPIRATION_STRATEGY_MATRIX[0,0]} "days keep a backup every" ${EXPIRATION_STRATEGY_MATRIX[0,1]} "days"
echo "After" ${EXPIRATION_STRATEGY_MATRIX[1,0]} "days keep a backup every" ${EXPIRATION_STRATEGY_MATRIX[1,1]} "days"
echo "After" ${EXPIRATION_STRATEGY_MATRIX[2,0]} "days keep a backup every" ${EXPIRATION_STRATEGY_MATRIX[2,1]} "days"
# Default value for $PREV ensures that the most recent backup is never deleted.
PREV="0000-00-00-000000"
for FILENAME in $(fn_find_backups | sort -r); do