ansible/roles/restic/files/restic-tidy.sh

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#!/bin/bash
# {{ ansible_managed }}
error_exit() {
printf "%s\n" "$1"
exit 1
}
RESTIC_ETC_PATH=${RESTIC_ETC_PATH:-/etc/restic}
RESTIC_PATH=${RESTIC_PATH:-/usr/local/bin/restic}
# initial sleep
MAX_ATTEMPTS=60
MAX_SLEEP=43200 # 12 hours
SLEEP="$(((RANDOM % MAX_SLEEP) + 1))s"
REPO=$1
if [ -z "$REPO" ]; then
error_exit "repo is missing"
fi
REPO_PATH="${RESTIC_ETC_PATH}/repos/${REPO}"
REPO_ENV="${REPO_PATH}/env.sh"
if [ ! -r "$REPO_ENV" ]; then
error_exit "${REPO_ENV} does not exist"
fi
# shellcheck disable=SC1090
. "$REPO_ENV"
KEEP_HOURLY=${KEEP_HOURLY:-24}
KEEP_DAILY=${KEEP_DAILY:-7}
KEEP_WEEKLY=${KEEP_WEEKLY:-5}
KEEP_MONTHLY=${KEEP_MONTHLY:-12}
KEEP_YEARLY=${KEEP_YEARLY:-10}
printf "started, keep hourly:%d daily:%d weekly:%d monthly:%d year:%d\n" \
"$KEEP_HOURLY" \
"$KEEP_DAILY" \
"$KEEP_WEEKLY" \
"$KEEP_MONTHLY" \
"$KEEP_YEARLY"
printf "sleeping for %s (initial)\n" $SLEEP
sleep $SLEEP
counter=0
sleep=1
rc=1
until [ $counter -eq "$MAX_ATTEMPTS" ] || [ $rc -eq 0 ]; do
$RESTIC_PATH forget \
--quiet \
--host "$(hostname -f)" \
--keep-hourly "$KEEP_HOURLY" \
--keep-daily "$KEEP_DAILY" \
--keep-weekly "$KEEP_WEEKLY" \
--keep-monthly "$KEEP_MONTHLY" \
--keep-yearly "$KEEP_YEARLY" \
--prune
rc=$?
if [ $rc -ne 0 ]; then
sleep=$((counter * 5))
printf "sleeping for %d seconds (%d)\n" $sleep $counter
sleep $sleep
fi
(( counter++ ))
done
if [ $rc -ne 0 ] && [ $counter -eq "$MAX_ATTEMPTS" ]; then
printf "tidy timed out, exiting\n"
else
printf "complete\n"
fi