39 lines
1.2 KiB
Bash
39 lines
1.2 KiB
Bash
#!/bin/sh
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set -eu
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SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
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INFRA_DIR=$(CDPATH= cd -- "$SCRIPT_DIR/.." && pwd)
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PROJECT_DIR=$(CDPATH= cd -- "$INFRA_DIR/.." && pwd)
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BACKUP_ROOT=${BACKUP_ROOT:-"$PROJECT_DIR/backups"}
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RETENTION_DAYS=${BACKUP_RETENTION_DAYS:-30}
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case "$RETENTION_DAYS" in
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*[!0-9]*|"") echo "BACKUP_RETENTION_DAYS 必须是正整数" >&2; exit 2 ;;
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esac
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if [ "$RETENTION_DAYS" -lt 1 ]; then
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echo "BACKUP_RETENTION_DAYS 必须至少为 1" >&2
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exit 2
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fi
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mkdir -p "$BACKUP_ROOT"
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BACKUP_ROOT=$(CDPATH= cd -- "$BACKUP_ROOT" && pwd)
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case "$BACKUP_ROOT" in
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"$PROJECT_DIR/backups"|"$PROJECT_DIR/backups/"*) ;;
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*) echo "拒绝清理项目 backups 目录之外的路径：$BACKUP_ROOT" >&2; exit 2 ;;
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esac
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find "$BACKUP_ROOT" -mindepth 1 -maxdepth 1 -type d -mtime "+$RETENTION_DAYS" -print |
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while IFS= read -r candidate; do
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name=$(basename "$candidate")
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if ! printf '%s\n' "$name" | grep -Eq '^20[0-9]{6}T[0-9]{6}Z$'; then
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echo "跳过非标准备份目录：$candidate"
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continue
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fi
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if [ ! -f "$candidate/manifest.txt" ] || [ ! -f "$candidate/SHA256SUMS" ]; then
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echo "跳过缺少清单的目录：$candidate"
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continue
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fi
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rm -rf -- "$candidate"
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echo "已按保留策略删除：$candidate"
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done
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