[alibaba/arthas]HTTP API 返回对象支持类似终端方式展示Object

嗨@hengyunabc，

此提交破坏了 API Rest 拉取结果，现在始终以字符串形式返回值：

例如，执行：

{
  "action":"async_exec",
  "command": "watch demo.MathGame primeFactors \"{params, returnObj, throwExp}\" -x 3",
  "consumerId": "d18fa78cee4b42a9949e8fd5cac870bb_1",
    "sessionId": "57885147-9026-472a-b0dd-99f4ca8ae3ea"
}

有一个“pull_results”操作的示例：

{
                "accessPoint": "AtExceptionExit",
                "className": "demo.MathGame",
                "cost": 0.107455,
                "jobId": 1,
                "methodName": "primeFactors",
                "sizeLimit": 10485760,
                "ts": "2022-10-14 17:52:05",
                "type": "watch",
                "value": "@ArrayList[\n    @Object[][\n        @Integer[-68719],\n    ],\n    null,\n    java.lang.IllegalArgumentException: number is: -68719, need >= 2\n\tat demo.MathGame.primeFactors(MathGame.java:46)\n\tat demo.MathGame.run(MathGame.java:24)\n\tat demo.MathGame.main(Unknown Source)\n,\n]"
}

在 3.6.4 及以下版本中，“value”是一个数组。

我应该为此创建一个错误问题吗？有办法再次扩大价值吗？

@ismadirolas

将来，也许用户可以为每个http命令设置返回格式。但目前这个配置是全局的。您可以执行options json-format true.

https://arthas.aliyun.com/en/doc/options.html#view-all-options

我目前使用的版本是3.6.5版本，但是开启options json-format true.后，返回的结果还是{}对象

。。 json当然有可能是 {} ，应该设置为 false。

另外一个实现方案，以树方式展开对象，包含每个对象的属性，便于调用方解析处理：https://github.com/alibaba/arthas/pull/1531

Arthas console:

[arthas@6716]$ watch sample.mybatis.controller.SampleController getHotel -x 3 -n 1
Press Q or Ctrl+C to abort.
Affect(class count: 1 , method count: 1) cost in 36 ms, listenerId: 2
method=sample.mybatis.controller.SampleController.getHotel location=AtExit
ts=2022-12-18 13:48:04; [cost=0.5955ms] result=@ArrayList[
    @Object[][
        @Integer[1],
    ],
    @SampleController[
        cityDao=@CityDao[
            sqlSession=@SqlSessionTemplate[org.mybatis.spring.SqlSessionTemplate@15cafec7],
        ],
        cache=@Collections$SynchronizedRandomAccessList[isEmpty=true;size=0],
    ],
    @Hotel[
        serialVersionUID=@Long[1],
        city=@Long[1],
        name=@String[Conrad Treasury Place],
        address=@String[William & George Streets],
        zip=@String[4001],
    ],
]

3.6.7 版本的HTTP API结果：

{
        "accessPoint": "AtExit",
        "className": "sample.mybatis.controller.SampleController",
        "cost": 0.6066,
        "jobId": 3,
        "methodName": "getHotel",
        "sizeLimit": 10485760,
        "ts": "2022-12-18 13:41:32",
        "type": "watch",
        "value": "@ArrayList[\n    @Object[][\n        @Integer[1],\n    ],\n    @SampleController[\n        cityDao=@CityDao[\n            sqlSession=@SqlSessionTemplate[org.mybatis.spring.SqlSessionTemplate@4febb875],\n        ],\n        hotelMapper=@$Proxy64[\n        random=@Random[\n        cache=@SynchronizedRandomAccessList[isEmpty=true;size=0],\n    ],\n    @Hotel[\n        serialVersionUID=@Long[1],\n        city=@Long[1],\n        name=@String[Conrad Treasury Place],\n        address=@String[William & George Streets],\n        zip=@String[4001],\n    ],\n]"
      }

channel-server 分支 HTTP API 结果， 每个展开的对象包含( type, name, value/fields/size等属性)：

 {
        "accessPoint": "AtExit",
        "className": "sample.mybatis.controller.SampleController",
        "cost": 41.8159,
        "expand": 3,
        "jobId": 1,
        "methodName": "getHotel",
        "sizeLimit": 500,
        "ts": "2022-12-18 13:45:22",
        "type": "watch",
        "value": {
          "size": 3,
          "type": "java.util.ArrayList",
          "value": [
            {
              "size": 1,
              "type": "Object[]",
              "value": [
                {
                  "type": "java.lang.Integer",
                  "value": 1
                }
              ]
            },
            {
              "fields": [
                {
                  "fields": [
                    {
                      "name": "sqlSession",
                      "type": "org.mybatis.spring.SqlSessionTemplate",
                      "value": "org.mybatis.spring.SqlSessionTemplate@15cafec7"
                    }
                  ],
                  "name": "cityDao",
                  "type": "sample.mybatis.dao.CityDao"
                },
                {
                  "name": "cache",
                  "size": 0,
                  "type": "java.util.Collections$SynchronizedRandomAccessList"
                }
              ],
              "type": "sample.mybatis.controller.SampleController"
            },
            {
              "fields": [
                {
                  "name": "serialVersionUID",
                  "type": "java.lang.Long",
                  "value": 1
                },
                {
                  "name": "city",
                  "type": "java.lang.Long",
                  "value": 1
                },
                {
                  "name": "name",
                  "type": "java.lang.String",
                  "value": "Conrad Treasury Place"
                },
                {
                  "name": "address",
                  "type": "java.lang.String",
                  "value": "William & George Streets"
                },
                {
                  "name": "zip",
                  "type": "java.lang.String",
                  "value": "4001"
                }
              ],
              "type": "sample.mybatis.domain.Hotel"
            }
          ]
        }
      }