117 lines
2.5 KiB
Bash
Executable File
117 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# {{ ansible_managed }}
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error_exit() {
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printf "%s\n" "$1"
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exit 1
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}
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RESTIC_ETC_PATH=${RESTIC_ETC_PATH:-/etc/restic}
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LOCK_PATH=/run/restic
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LOCK="${LOCK_PATH}/tidy.lock"
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KEEP_LOCK=
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function finish {
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if [ -z $KEEP_LOCK ]; then
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rm -f "$LOCK"
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fi
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}
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trap finish EXIT
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# shellcheck source=/dev/null
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source "${RESTIC_ETC_PATH}/env.sh"
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if [ "$RESTIC_SELF_UPDATE" -eq 1 ]; then
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printf "running restic self-update\n"
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$RESTIC_PATH self-update
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fi
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# initial sleep
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MAX_ATTEMPTS=60
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MAX_SLEEP=43200 # 12 hours
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SLEEP="$(((RANDOM % MAX_SLEEP) + 1))s"
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REPO=$1
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if [ -z "$REPO" ]; then
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error_exit "repo is missing"
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fi
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REPO_PATH="${RESTIC_ETC_PATH}/repos/${REPO}"
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REPO_ENV="${REPO_PATH}/env.sh"
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if [ ! -r "$REPO_ENV" ]; then
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error_exit "${REPO_ENV} does not exist"
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fi
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# shellcheck disable=SC1090
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. "$REPO_ENV"
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KEEP_HOURLY=${KEEP_HOURLY:-24}
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KEEP_DAILY=${KEEP_DAILY:-7}
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KEEP_WEEKLY=${KEEP_WEEKLY:-5}
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KEEP_MONTHLY=${KEEP_MONTHLY:-12}
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KEEP_YEARLY=${KEEP_YEARLY:-10}
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if [ -f "$LOCK" ]; then
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pid=$(cat "$LOCK")
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if ! kill -0 "$pid" 2> /dev/null; then
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printf "removing orphaned lock, pid %d does not exist\n" "$pid"
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rm -f "$LOCK"
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else
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if [[ -f "/proc/${pid}/cmdline" ]]; then
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cmdline=$(tr "\0" " " <"/proc/${pid}/cmdline")
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if ! [[ $cmdline =~ $(basename "$0") ]]; then
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printf "removing orphaned lock, pid %d belongs to another process\n" "$pid"
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rm -f "$LOCK"
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else
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KEEP_LOCK=1
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error_exit "another job is running, pid=${pid}"
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fi
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fi
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fi
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fi
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printf "started, keep hourly:%d daily:%d weekly:%d monthly:%d year:%d\n" \
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"$KEEP_HOURLY" \
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"$KEEP_DAILY" \
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"$KEEP_WEEKLY" \
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"$KEEP_MONTHLY" \
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"$KEEP_YEARLY"
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printf "sleeping for %s (initial)\n" $SLEEP
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sleep $SLEEP
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counter=0
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sleep=1
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rc=1
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until [ $counter -eq "$MAX_ATTEMPTS" ] || [ $rc -eq 0 ]; do
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$RESTIC_PATH forget \
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--quiet \
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--host "$(hostname -f)" \
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--keep-hourly "$KEEP_HOURLY" \
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--keep-daily "$KEEP_DAILY" \
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--keep-weekly "$KEEP_WEEKLY" \
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--keep-monthly "$KEEP_MONTHLY" \
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--keep-yearly "$KEEP_YEARLY" \
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--prune
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rc=$?
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if [ $rc -ne 0 ]; then
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sleep=$((counter * 5))
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printf "sleeping for %d seconds (%d)\n" $sleep $counter
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sleep $sleep
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fi
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(( counter++ ))
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done
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if [ $rc -ne 0 ] && [ $counter -eq "$MAX_ATTEMPTS" ]; then
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printf "tidy timed out, exiting\n"
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else
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printf "complete\n"
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fi
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