MSON到JSON-Schema的“一个”问题

Question

我试图用ApiBlueprint MSON表示法来描述一个具有可变部分的对象。下面是ApiBlueprint中的简单代码：

 FORMAT: 1A

# Test API

## Services [/Service/{id}]

### GET Service info [GET]


+ Request (application/json)

    + Headers

            Authorization: JWT <token>

+ Response 200 (application/json)

    + Attributes (array[ServiceResource], fixed)



# Data Structures

## Resource (object)
### Properties

+ id: `a6vhAo3FG` (string, fixed)
+ created_at: `2016-07-01T15:11:09.553Z` (string, required)
+ updated_at: `2017-11-22T08:07:55.002Z` (string, required)


## Service (object)

### Properties
+ type: tcp_service (string, required)
- One Of
    - config (TcpService, required)
    - config (IcmpService, required)


## ServiceResource (Resource)
### Properties

- Include Service

## TcpService (object)

### Properties

+ port: `80` (number, required) 
+ request_str: `HEAD` (string, required)
+ expect_response_str: `200 OK` (string, required)

## IcmpService (object)

### Properties

+ timeout_ms: `1000` (number, required)
+ packet_size_bytes: `1000` (number, required)
+ ttl: `128` (number, required)

它在apiary.io中呈现得很好，但是https://json-schema-validator.herokuapp.com中生成的Json的验证报告了一个错误：

[ {
  "level" : "error",
  "schema" : {
    "loadingURI" : "#",
    "pointer" : "/items"
  },
  "instance" : {
    "pointer" : "/0"
  },
  "domain" : "validation",
  "keyword" : "additionalProperties",
  "message" : "object instance has properties which are not allowed by the schema: [\"config\"]",
  "unwanted" : [ "config" ]
} ]

也许我做错了什么？

有没有办法用MSON来描述对象的数组，其中对象有一个变体部分，提供了正确的JSON？

Answer 1

我相信你是在找 type attribute。fixed意味着这些值是固定的，并且不能是提供的示例值以外的任何其他值。当您使用fixed-type时，您表示类型是固定的，但是值不是固定的。

+ Attributes (array[ServiceResource], fixed-type)