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权限清单：解释 grants 首部插入导致的多处差异

数组按下标逐项比较。在 grants 开头插入记录后，后续元素位置移动，会产生多处修改和一个尾部新增；这不等于多条业务记录都发生了真实字段变更。需要按 ID 配对时应先在自己的业务逻辑中处理。

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示例工作台

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JSON 结构对比修改下方数据后重新运行
运行结果
[
  {
    "op": "replace",
    "path": "/data/grants/0/grantId",
    "oldValue": "demo-permissions-1",
    "value": "demo-inserted"
  },
  {
    "op": "replace",
    "path": "/data/grants/0/resource",
    "oldValue": "演示文档空间",
    "value": "新增演示记录"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/grantId",
    "oldValue": "demo-permissions-2",
    "value": "demo-permissions-1"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/resource",
    "oldValue": "演示项目仓库",
    "value": "演示文档空间"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/priority",
    "oldValue": 2,
    "value": 1
  },
  {
    "op": "replace",
    "path": "/data/grants/1/granted",
    "oldValue": false,
    "value": true
  },
  {
    "op": "replace",
    "path": "/data/grants/1/scope",
    "oldValue": "project",
    "value": "team"
  },
  {
    "op": "remove",
    "path": "/data/grants/1/policy/actions/1",
    "oldValue": "write"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/policy/owner",
    "oldValue": "demo-project",
    "value": "demo-team"
  },
  {
    "op": "add",
    "path": "/data/grants/2",
    "value": {
      "grantId": "demo-permissions-2",
      "resource": "演示项目仓库",
      "priority": 2,
      "granted": false,
      "scope": "project",
      "policy": {
        "actions": [
          "read",
          "write"
        ],
        "owner": "demo-project"
      }
    }
  }
]

原例已核验，可修改输入后重新运行。

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01

场景与操作说明

权限清单中的声明不能替代服务端授权判断。合成规则只帮助检查字段和差异，不会为账号授予权限。

priority 是示例规则排序值，不表示用户的安全级别。

  1. 核对 权限清单 的字段层级，保留 grantId 的字符串类型。
  2. 修改一项输入并运行，观察结果中的值或路径如何变化。
  3. 载入对照样本，复现下面的变化；恢复原例会替换当前输入。
02

对照样本

对照样本交换 A 与 B。观察新增与删除的方向、修改前后值如何反转；没有差异时交换仍无差异。

查看对照输入
{
  "ok": true,
  "data": {
    "grants": [
      {
        "grantId": "demo-inserted",
        "resource": "新增演示记录",
        "priority": 1,
        "granted": true,
        "scope": "team",
        "policy": {
          "actions": [
            "read"
          ],
          "owner": "demo-team"
        }
      },
      {
        "grantId": "demo-permissions-1",
        "resource": "演示文档空间",
        "priority": 1,
        "granted": true,
        "scope": "team",
        "policy": {
          "actions": [
            "read"
          ],
          "owner": "demo-team"
        }
      },
      {
        "grantId": "demo-permissions-2",
        "resource": "演示项目仓库",
        "priority": 2,
        "granted": false,
        "scope": "project",
        "policy": {
          "actions": [
            "read",
            "write"
          ],
          "owner": "demo-project"
        }
      }
    ],
    "summary": {
      "total": 2,
      "note": null
    }
  }
}
{
  "ok": true,
  "data": {
    "grants": [
      {
        "grantId": "demo-permissions-1",
        "resource": "演示文档空间",
        "priority": 1,
        "granted": true,
        "scope": "team",
        "policy": {
          "actions": [
            "read"
          ],
          "owner": "demo-team"
        }
      },
      {
        "grantId": "demo-permissions-2",
        "resource": "演示项目仓库",
        "priority": 2,
        "granted": false,
        "scope": "project",
        "policy": {
          "actions": [
            "read",
            "write"
          ],
          "owner": "demo-project"
        }
      }
    ],
    "summary": {
      "total": 2,
      "note": null
    }
  }
}

对照样本的实际结果

[
  {
    "op": "replace",
    "path": "/data/grants/0/grantId",
    "oldValue": "demo-inserted",
    "value": "demo-permissions-1"
  },
  {
    "op": "replace",
    "path": "/data/grants/0/resource",
    "oldValue": "新增演示记录",
    "value": "演示文档空间"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/grantId",
    "oldValue": "demo-permissions-1",
    "value": "demo-permissions-2"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/resource",
    "oldValue": "演示文档空间",
    "value": "演示项目仓库"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/priority",
    "oldValue": 1,
    "value": 2
  },
  {
    "op": "replace",
    "path": "/data/grants/1/granted",
    "oldValue": true,
    "value": false
  },
  {
    "op": "replace",
    "path": "/data/grants/1/scope",
    "oldValue": "team",
    "value": "project"
  },
  {
    "op": "add",
    "path": "/data/grants/1/policy/actions/1",
    "value": "write"
  },
  {
    "op": "replace",
    "path": "/data/grants/1/policy/owner",
    "oldValue": "demo-team",
    "value": "demo-project"
  },
  {
    "op": "remove",
    "path": "/data/grants/2",
    "oldValue": {
      "grantId": "demo-permissions-2",
      "resource": "演示项目仓库",
      "priority": 2,
      "granted": false,
      "scope": "project",
      "policy": {
        "actions": [
          "read",
          "write"
        ],
        "owner": "demo-project"
      }
    }
  }
]