NIFI 处理器的 JOLT 规范

Question

我有以下 JSON 输入

{
  "events": [
    {
      "cluster_id": "0717-035521-puny598",
      "timestamp": 1535540053785,
      "type": "TERMINATING",
      "details": {
        "reason": {
          "code": "INACTIVITY",
          "parameters": {
            "inactivity_duration_min": "15"
          }
        }
      }
    },
    {
      "cluster_id": "0717-035521-puny598",
      "timestamp": 1535537117300,
      "type": "EXPANDED_DISK",
      "details": {
        "previous_disk_size": 29454626816,
        "disk_size": 136828809216,
        "free_space": 17151311872,
        "instance_id": "6cea5c332af94d7f85aff23e5d8cea37"
      }
    }
  ]
}

我想把它转换成以下。

1) 在“events”数组的每个对象中添加一个静态key:value。 2) 从“events”数组的每个对象中删除一个元素“type”。 3) 其余所有值在 i/p 和 o/p 中应相同。 “细节”是一个没有特定结构的对象。

{
  "events": [
    {
      "new_key" : "new_value",
      "cluster_id": "0717-035521-puny598",
      "timestamp": 1535540053785,

      "details": {
        "reason": {
          "code": "INACTIVITY",
          "parameters": {
            "inactivity_duration_min": "15"
          }
        }
      }
    },
    {
      "new_key" : "new_value",
      "cluster_id": "0717-035521-puny598",
      "timestamp": 1535537117300,

      "details": {
        "previous_disk_size": 29454626816,
        "disk_size": 136828809216,
        "free_space": 17151311872,
        "instance_id": "6cea5c332af94d7f85aff23e5d8cea37"
      }
    }
  ]
}

Answer 1

以下链规范应该可以工作：

[
  {
    "operation": "default",
    "spec": {
      "events[]": {
        "*": {
          "new-key": "new-value"
        }
      }
    }
  },
  {
    "operation": "remove",
    "spec": {
      "events": {
        "*": {
          "type": ""
        }
      }
    }
  }
]