[BUG]: OpenApiSpecGeneratorPlugin generated docs don't appear valid

[andrewconnell]

Description

The description document created using the OpenAPI spec generator plugin doesn't appear to create valid documents as it's using an invalid data type. The generated document doesn't pass multiple validators (such as this one and this one).

Expected behaviour

• Update the Dev Proxy config to add support for the OpenApiSpecGeneratorPlugin.
• Record a request using the following URL: https://api.nasa.gov/mars-photos/api/v1/rovers/curiosity/photos?api_key=DEMO_KEY&sol=1000&camera=MAST
• Load the generated JSON file generated by the Dev Proxy into one of the validators - it should pass.
• Using the VSCode Teams Toolkit, create a new project using the following options:
  • Message Extension > Custom Search Results > Start with an OpenAPI Description Document
  • When prompted, select the JSON file generated by the Dev Proxy.
  • Select the only path in the description document & let the TTK wizard complete the project creation process.

Actual behaviour

When repeating the process above...

• when validating the JSON file generated by the Dev Proxy, it fails
• when selecting the JSON file generated by the Dev Proxy during the process of creating a new project using the TTK, it fails and displays errors in the terminal:

Summary:
1 failed.
(×) Error: No supported API found in the OpenAPI document.
For more information visit: "https://aka.ms/build-api-based-message-extension". 
Reasons for API incompatibility are listed below:
GET /mars-photos/api/v1/rovers/curiosity/photos: response json is empty

Steps to reproduce

Noted above in Expected behavior process

Dev Proxy Version

0.19.0

Operating system (environment)

macOS

Shell

zsh

Configuration file

{
  "$schema": "https://raw.githubusercontent.com/microsoft/dev-proxy/main/schemas/v0.19.0/rc.schema.json",
  "plugins": [
    {
      "name": "RetryAfterPlugin",
      "enabled": true,
      "pluginPath": "~appFolder/plugins/dev-proxy-plugins.dll"
    },
    {
      "name": "GenericRandomErrorPlugin",
      "enabled": true,
      "pluginPath": "~appFolder/plugins/dev-proxy-plugins.dll",
      "configSection": "genericRandomErrorPlugin"
    },
    {
      "name": "OpenApiSpecGeneratorPlugin",
      "enabled": true,
      "pluginPath": "~appFolder/plugins/dev-proxy-plugins.dll"
    }
  ],
  "urlsToWatch": [
    "https://jsonplaceholder.typicode.com/*",
    "https://api.nasa.gov/*"
  ],
  "genericRandomErrorPlugin": {
    "errorsFile": "devproxy-errors.json"
  },
  "rate": 0,
  "logLevel": "information",
  "newVersionNotification": "stable"
}

Additional Info

No response

[waldekmastykarz]

Thanks for letting us know. I'll check it out asap

[waldekmastykarz]

I just tried reproing the issue you mentioned. The generated spec validates fine in https://apitools.dev/swagger-parser/online/:

But validation fails in https://www.panoptica.app/tools/api-spec. Unfortunately, beyond saying that the spec file is invalid, it doesn't tell what's wrong so it's hard to know what to fix.

I can repro the issue with TTK. I'll reach out to the team to see why it's rejecting the spec and will share an update as soon as I know more.

[waldekmastykarz]

Got a short update: it seems that TTK is looking for application/json while the generated spec includes encoding application/json; charset=utf-8. I'm going to find out more if it's something that should be adjusted in Dev Proxy or in TTK. Stay tuned

[waldekmastykarz]

Bug fixed in v0.19.1 available on Homebrew and shortly on winget