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zorruno-backupdockerscript/backup.sh
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#!/usr/bin/env bash
# Main pipeline: container archives, configured methods, then local prune.
set -Eeuo pipefail
SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
. "$SCRIPT_DIR/lib/common.sh"
DRY_RUN=0; SKIP_CONTAINERS=0; SKIP_PRUNE=0; CONTAINERS_OVERRIDE=""
while [[ $# -gt 0 ]]; do
case "$1" in
--dry-run|-t) DRY_RUN=1 ;; --skip-containers) SKIP_CONTAINERS=1 ;; --skip-prune) SKIP_PRUNE=1 ;;
--containers|-f) CONTAINERS_OVERRIDE="${2:?Missing containers file}"; shift ;;
-h|--help)
echo "Usage: ${0##*/} [--dry-run] [--containers FILE] [--skip-containers] [--skip-prune]"
echo "Transfer stages run in BACKUP_METHODS order. Add stages/NN-name.sh and list name in BACKUP_METHODS."
exit 0 ;;
*) die "Unknown option: $1" 2 ;;
esac
shift
done
BACKUP_RUN_ID="$(run_id)"
BACKUP_STARTED_EPOCH="$(date +%s)"
BACKUP_RUN_LOG="$(mktemp "${TMPDIR:-/tmp}/zorruno-docker-backup.XXXXXX.log")"
export BACKUP_RUN_ID BACKUP_STARTED_EPOCH BACKUP_RUN_LOG
finish_run() {
local exit_code=$? finished status
trap - EXIT
set +e
finished="$(date +%s)"
if (( exit_code == 0 )); then
if (( DRY_RUN )); then status="dry_run_success"; else status="success"; fi
else
if (( DRY_RUN )); then status="dry_run_failed"; else status="failed"; fi
fi
if is_true "$MQTT_REPORT_ENABLED"; then
"$SCRIPT_DIR/stages/99-mqtt-report.sh" "$status" "$exit_code" \
"$BACKUP_STARTED_EPOCH" "$finished" "$BACKUP_RUN_ID" "$BACKUP_RUN_LOG" \
|| log ERROR "Unable to publish final MQTT result"
fi
rm -f -- "$BACKUP_RUN_LOG"
exit "$exit_code"
}
trap finish_run EXIT
require_command flock
mkdir -p "$(dirname "$LOCK_FILE")"
exec 9>"$LOCK_FILE"
flock -n 9 || die "Another backup run holds lock: $LOCK_FILE"
stage_args=()
(( DRY_RUN )) && stage_args+=(--dry-run)
[[ -n "$CONTAINERS_OVERRIDE" ]] && stage_args+=(--containers "$CONTAINERS_OVERRIDE")
log START "Backup pipeline for $BACKUP_HOSTNAME"
if is_true "$MQTT_REPORT_ENABLED"; then
"$SCRIPT_DIR/stages/99-mqtt-report.sh" running 0 "$BACKUP_STARTED_EPOCH" \
"$BACKUP_STARTED_EPOCH" "$BACKUP_RUN_ID" "$BACKUP_RUN_LOG" \
|| log WARN "Unable to publish MQTT running state; backup will continue"
fi
(( SKIP_CONTAINERS )) || "$SCRIPT_DIR/stages/10-containers.sh" "${stage_args[@]}"
method_args=(); (( DRY_RUN )) && method_args+=(--dry-run)
for method in $BACKUP_METHODS; do
method_script=""
while IFS= read -r candidate; do method_script="$candidate"; break; done < <(find "$SCRIPT_DIR/stages" -maxdepth 1 -type f -name "*-${method}.sh" -print | sort)
[[ -n "$method_script" ]] || die "Configured backup method not found: $method"
"$method_script" "${method_args[@]}"
done
(( SKIP_PRUNE )) || "$SCRIPT_DIR/stages/90-prune.sh" "${method_args[@]}"
log DONE "Backup pipeline completed successfully"