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NullReferenceException when generating code for a parameter with no schema

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评估

难度
3/5
预计耗时
1-2 天
新手友好度
68/100
Issue 类型
缺陷
描述清晰度
基本清楚
活跃度
活跃
技术栈
fsharp
领域
api

调研方向

Start with OperationCompiler.fs around line 206 to trace how a parameter with Content is represented, then follow the call into DefinitionCompiler.fs around line 440 where schemaObj is null. Run the provider against the OpenAPI document in the issue and verify code generation completes for the parameter whose schema is nested under Content.

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描述

Hi,

I tried pointing the provider at an OpenApi schema on a new project at work, and got a NullReferenceException from it, causing the build to fail.

Trying to minimise the issue, it looks like if I have something like

{
  "openapi": "3.1.1",
  "info": {
    "title": "Testing | v1",
    "version": "0.2.0.0"
  },
  "paths": {
    "/api/v1/catalogues/scan": {
      "post": {
        "tags": [
          "Catalogue"
        ],
        "summary": "Testing",
        "description": "Testing",
        "operationId": "Scan",
        "parameters": [
          {
            "name": "properties",
            "in": "header",
            "description": "header description",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "stage-location": {
                      "type": "string",
                      "description": "location"
                    },
                    "file-size": {
                      "minimum": 0,
                      "type": "integer",
                      "format": "int64"
                    }
                  }
                }
              }
            }
          }
        ],
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "text/plain": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }
    }
  }
}

The the provider gets to https://github.com/fsprojects/SwaggerProvider/blob/4e299fd52e64fc2354a99e2acec3420078c4f7f0/src/SwaggerProvider.DesignTime/DefinitionCompiler.fs#L440 and then throws because schemaObj is null.

Looking higher up the callstack around https://github.com/fsprojects/SwaggerProvider/blob/4e299fd52e64fc2354a99e2acec3420078c4f7f0/src/SwaggerProvider.DesignTime/OperationCompiler.fs#L206, current.Schema is null, but it does have a 'Content' property, and that does contain a schema.

This is as far as I've got looking at it so far, will have another look next week if no one else of repo assist gets to it first.

Thanks.

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这个项目没有提供开发容器、Dockerfile 或贡献指南，环境需要你自己搭建：先看它的 README，通用步骤见我们的新手贡献指南。

从这里开始

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  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库，在一个分支上完成修改。
  4. 提交 Pull Request，并在描述里引用这个 Issue 编号。

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