Refine Synology backup workflow

Co-authored-by: Copilot App <[email protected]>

deploy/backup/create_postgres_backup.sh

@@ -9,51 +9,93 @@ SYNOLOGY_BACKUP_DIR="${SYNOLOGY_BACKUP_DIR:-}"
 
 timestamp="$(date -u +%Y%m%d-%H%M%S)"
 postgres_file="postgres-${timestamp}.dump"
-uploads_file="uploads-${timestamp}.tar.gz"
 config_file="config-${timestamp}.tar.gz"
+logs_file="logs-${timestamp}.tar.gz"
 manifest_file="backup-${timestamp}.manifest"
 
 mkdir -p "${BACKUP_DIR}"
 
+# If SYNOLOGY_BACKUP_DIR wasn't exported in the shell, read it from ENV_FILE.
+if [ -z "${SYNOLOGY_BACKUP_DIR}" ] && [ -f "${ENV_FILE}" ]; then
+  SYNOLOGY_BACKUP_DIR="$(
+    sed -n 's/^SYNOLOGY_BACKUP_DIR=//p' "${ENV_FILE}" | tail -n 1
+  )"
+fi
+
 docker compose --env-file "${ENV_FILE}" -f "${COMPOSE_FILE}" exec -T postgres sh -lc \
   "PGPASSWORD=\"\$POSTGRES_PASSWORD\" pg_dump -U \"\$POSTGRES_USER\" -d \"\$POSTGRES_DB\" -Fc" \
   > "${BACKUP_DIR}/${postgres_file}"
 
-docker compose --env-file "${ENV_FILE}" -f "${COMPOSE_FILE}" run --rm --no-deps --entrypoint sh app -lc \
-  "tar -C /app/uploads -czf - ." \
-  > "${BACKUP_DIR}/${uploads_file}"
-
-tar -C . -czf "${BACKUP_DIR}/${config_file}" \
-  "${ENV_FILE}" \
-  "${COMPOSE_FILE}" \
-  deploy/cloudflared/config.yml
-
 cat > "${BACKUP_DIR}/${manifest_file}" <<EOF
 created_at_utc=${timestamp}
 postgres_dump=${postgres_file}
-uploads_archive=${uploads_file}
-config_archive=${config_file}
+backup_dir=${BACKUP_DIR}
+synology_backup_dir=${SYNOLOGY_BACKUP_DIR}
+media_sync_mode=synology-incremental-new-files-only
 compose_file=${COMPOSE_FILE}
 env_file=${ENV_FILE}
 EOF
 
 find "${BACKUP_DIR}" -type f \( \
   -name 'postgres-*.dump' -o \
-  -name 'uploads-*.tar.gz' -o \
-  -name 'config-*.tar.gz' -o \
   -name 'backup-*.manifest' \
 \) -mtime +"${RETENTION_DAYS}" -delete
 
 if [ -n "${SYNOLOGY_BACKUP_DIR}" ]; then
   mkdir -p "${SYNOLOGY_BACKUP_DIR}"
+
+  # 1) Always copy the PostgreSQL dump to Synology.
   cp "${BACKUP_DIR}/${postgres_file}" "${SYNOLOGY_BACKUP_DIR}/${postgres_file}"
-  cp "${BACKUP_DIR}/${uploads_file}" "${SYNOLOGY_BACKUP_DIR}/${uploads_file}"
-  cp "${BACKUP_DIR}/${config_file}" "${SYNOLOGY_BACKUP_DIR}/${config_file}"
+
+  # 2) Snapshot deployment config and logs to Synology each run.
+  set -- "${ENV_FILE}" "${COMPOSE_FILE}"
+  if [ -f deploy/cloudflared/config.yml ]; then
+    set -- "$@" deploy/cloudflared/config.yml
+  fi
+  tar -C . -czf "${SYNOLOGY_BACKUP_DIR}/${config_file}" "$@"
+
+  docker compose --env-file "${ENV_FILE}" -f "${COMPOSE_FILE}" run --rm --no-deps \
+    -v "${SYNOLOGY_BACKUP_DIR}:/backup" \
+    --entrypoint sh app -lc \
+    "if [ -d /app/data/logs ]; then tar -C /app/data/logs -czf /backup/${logs_file} .; else : > /backup/${logs_file}; fi"
+
+  # 3) Sync uploads incrementally to Synology (copy only new files).
+  docker compose --env-file "${ENV_FILE}" -f "${COMPOSE_FILE}" run --rm --no-deps \
+    -v "${SYNOLOGY_BACKUP_DIR}:/backup" \
+    --entrypoint sh app -lc '
+      mkdir -p /backup/uploads/documents /backup/uploads/photos;
+      if [ -f /app/uploads/homepage.md ] && [ ! -f /backup/uploads/homepage.md ]; then
+        cp /app/uploads/homepage.md /backup/uploads/homepage.md;
+      fi;
+      if [ -d /app/uploads/documents ]; then
+        cp -an /app/uploads/documents/. /backup/uploads/documents/;
+      fi;
+      if [ -d /app/uploads/photos ]; then
+        cp -an /app/uploads/photos/. /backup/uploads/photos/;
+      fi
+    '
+
   cp "${BACKUP_DIR}/${manifest_file}" "${SYNOLOGY_BACKUP_DIR}/${manifest_file}"
+
+  # Keep rolling dump/config/log/manifest snapshots on Synology.
+  find "${SYNOLOGY_BACKUP_DIR}" -maxdepth 1 -type f \( \
+    -name 'postgres-*.dump' -o \
+    -name 'config-*.tar.gz' -o \
+    -name 'logs-*.tar.gz' -o \
+    -name 'backup-*.manifest' \
+  \) -mtime +"${RETENTION_DAYS}" -delete
 fi
 
 echo "Created backup set:"
 echo "  ${BACKUP_DIR}/${postgres_file}"
-echo "  ${BACKUP_DIR}/${uploads_file}"
-echo "  ${BACKUP_DIR}/${config_file}"
 echo "  ${BACKUP_DIR}/${manifest_file}"
+if [ -n "${SYNOLOGY_BACKUP_DIR}" ]; then
+  echo "Synology artifacts:"
+  echo "  ${SYNOLOGY_BACKUP_DIR}/${postgres_file}"
+  echo "  ${SYNOLOGY_BACKUP_DIR}/${config_file}"
+  echo "  ${SYNOLOGY_BACKUP_DIR}/${logs_file}"
+  echo "  ${SYNOLOGY_BACKUP_DIR}/uploads/{homepage.md,documents/,photos/} (incremental)"
+  echo "  ${SYNOLOGY_BACKUP_DIR}/${manifest_file}"
+else
+  echo "SYNOLOGY_BACKUP_DIR not set; skipped Synology copy."
+fi