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Changing request field type from `string` to `oneOf: string, number` shouldn't break

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#797 0 則留言 0 個 reaction 已指派 0 人 在 GitHub 檢視

@wexom 已經在處理了。

開始於 2025年9月24日。

  • #838 來自 @wexom —— 未關閉

評估

難度
3/5
預估耗時
1-2 天
新手友好度
50/100
Issue 類型
缺陷
描述清晰度
描述清楚
活躍度
停滯
技術堆疊
java, openapi
領域
api

研究方向

使用 base.yml 和 revision.yml,透過 openapi-diff base.yml revision.yml 重現該報告,然後追蹤針對 name 屬性的請求本文 schema 相容性處理。完成的標準是,將 integer 變更為包含 integer 和 string 的 oneOf 後,不再顯示為 breaking change。

由索引模型根據 Issue 內容生成。

描述

Breaking/Non-Breaking classification

Describe the bug
In the request body, if you change the following field:

requestBody:
  content:
    application/json:
      schema:
        type: object
        properties:
          name:
            type: integer
        required:
          - name
  required: true

to:

requestBody:
  content:
    application/json:
      schema:
        type: object
        properties:
          name:
            oneOf:
              - type: integer
              - type: string
        required:
          - name
  required: true

Then openapi-diff reports this as a breaking change.

To Reproduce

base.yml
openapi: 3.0.1
info:
  title: User Service
  version: 1.0.0
paths:
  /users:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: integer
              required:
                - name
        required: true
      responses:
        201:
          description: Created
          content:
            application/json:
              schema:
                properties:
                  id:
                    type: integer
                required:
                  - id
                type: object
revision.yml
openapi: 3.0.1
info:
  title: User Service
  version: 1.0.0
paths:
  /users:
    post:
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  oneOf:
                    - type: integer
                    - type: string
              required:
                - name
        required: true
      responses:
        201:
          description: Created
          content:
            application/json:
              schema:
                properties:
                  id:
                    type: integer
                required:
                  - id
                type: object
  1. Download the two files base.yml and revision.yml
  2. Run openapi-diff base.yml revision.yml
  3. Observe the following output:
==========================================================================
==                            API CHANGE LOG                            ==
==========================================================================
                               User Service
--------------------------------------------------------------------------
--                            What's Changed                            --
--------------------------------------------------------------------------
- POST   /users
  Request:
        - Changed application/json
          Schema: Broken compatibility
          Changed property type: name (integer -> object)
--------------------------------------------------------------------------
--                                Result                                --
--------------------------------------------------------------------------
                 API changes broke backward compatibility
--------------------------------------------------------------------------

Expected behavior
openapi-diff shouldn't mark this as a breaking change. Actually, the request body should be considered as a contravariant contract: widening a field type isn't a breaking change.

主要語言
Java
星號
1.1k
分支
190
PR 合併指標
30 天內沒有已合併 PR

環境準備

  • 提供 Dockerfile 或 Docker Compose 檔案
  • 沒有 Pull Request 範本
  • 閱讀貢獻指南

從這裡開始

  1. 先讀完整個 Issue,再讀專案的貢獻指南。
  2. 在 Issue 下留言說明你要接手 —— 這能避免兩個人做同樣的事。
  3. Fork 儲存庫,在一個分支上完成修改。
  4. 送出 Pull Request,並在描述裡引用這個 Issue 編號。

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