Begin Wyrm from the game kit

deploy/wyrm-backup.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Nightly ledger backup to DigitalOcean Spaces, one prefix per game in the shared bucket.
+#   current/    - mirror of /var/lib/wyrm, less the rollup (rebuilt from logs)
+#   snapshots/  - one dated copy per day, pruned after 90 days
+# Ledgers are append-only JSONL; the game server never needs stopping.
+# Sentry Crons check-in: /root/.wyrm-sentry-cron holds the check-in
+# URL (absent file = no check-ins). SCHEDULE must match /etc/cron.d/wyrm.
+# On a host the hall shares, hall-nightly.sh runs this and checks in once
+# for every game, so the file is absent and the exit status is the word.
+set -u
+SCHEDULE="23 7 * * *"
+BUCKET="kestrel-wizwar-backups" # the hall's shared Space, named for its first tenant
+PREFIX="wyrm"
+SRC="/var/lib/wyrm"
+LOG="/var/log/wyrm/backup.log"
+STAMP=$(date +%Y-%m-%d)
+mkdir -p "$(dirname "$LOG")"
+CRON_URL=$(cat /root/.wyrm-sentry-cron 2>/dev/null || true)
+# One check-in, when the run ends, carrying its duration: a start and a
+# finish sent seconds apart can reach Sentry in either order, and a start
+# that lands second is never closed. A run that never ends sends nothing,
+# and Sentry marks the night missed.
+START=$SECONDS
+checkin() {
+  [ -n "$CRON_URL" ] && curl -sf -o /dev/null -X POST -H "Content-Type: application/json" \
+    -d "{\"status\":\"$1\",\"duration\":$((SECONDS - START)),\"monitor_config\":{\"schedule\":{\"type\":\"crontab\",\"value\":\"$SCHEDULE\"},\"checkin_margin\":30,\"max_runtime\":10,\"timezone\":\"UTC\"}}" \
+    "$CRON_URL" || true
+}
+
+if [ ! -s /root/.config/rclone/rclone.conf ]; then
+  echo "$(date -Is) skipped: rclone is not configured" >> "$LOG"
+  exit 1
+fi
+
+status=0
+{
+  echo "=== $(date -Is) backup start"
+  if rclone sync "$SRC" "spaces:$BUCKET/$PREFIX/current" --exclude 'rollup.jsonl' 2>&1 &&
+     rclone copy "$SRC" "spaces:$BUCKET/$PREFIX/snapshots/$STAMP" 2>&1; then
+    checkin ok
+  else
+    checkin error
+    status=1
+  fi
+  CUTOFF=$(date -d "90 days ago" +%Y-%m-%d)
+  rclone lsf "spaces:$BUCKET/$PREFIX/snapshots/" --dirs-only 2>/dev/null | \
+  while read -r d; do
+    day="${d%/}"
+    if [[ "$day" < "$CUTOFF" ]]; then
+      echo "pruning snapshot $day"
+      rclone purge "spaces:$BUCKET/$PREFIX/snapshots/$day" 2>&1
+    fi
+  done
+  echo "=== $(date -Is) backup done"
+} >> "$LOG" 2>&1
+exit $status