Reference resolves to more than one schema

[nilkanth987]

Describe the bug

Referencing same object multiple times in the message with $id in the referencing object causing issue.

How to Reproduce

asyncapi: 2.6.0
info:
  title: Test API
  version: 0.0.21
defaultContentType: application/json
channels:
  /test:
    publish:
      message:
        $ref: "#/components/messages/testMessage"
components:
  messages:
    testMessage:
      name: testMessage
      payload:
        type: object
        $id: testMessage
        properties:
          location:
            type: object
            properties:
              from:
                $ref: "#/components/schemas/location"
              to:
                $ref: "#/components/schemas/location"
        examples:
          - location:
              from:
                $ref: "#/components/schemas/location/examples/0"
              to:
                $ref: "#/components/schemas/location/examples/0"
  schemas:
    location:
      type: object
      $id: location
      properties:
        lat:
          type: number
        lng:
          type: number
      examples:
        - lat: 101
          lng: 102

When you run the below cmd

asyncapi generate models typescript asyncapi.yml -o public/docs/generated/ts

It produces the below output

Input is not a correct AsyncAPI document so it cannot be processed.
asyncapi.yml
 27:13  error  asyncapi2-schema-examples  reference "location" resolves to more than one schema  components.messages.testMessage.payload.examples[0]
 42:11  error  asyncapi2-schema-examples  schema with key or id "location" already exists        components.schemas.location.examples[0]

✖ 2 problems (2 errors, 0 warnings, 0 infos, 0 hints)

NOTE : When you remove $id from location schema it works but it will create model with AnonymousSchema_1 name.

Expected behavior

It should ignore the previous id and override the object

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[nilkanth987]

Update: If I comment the examples then it works. I think the examples parsing is causing issues.

[jonaslagoni]

You cannot use references for values in examples i.e. this is not valid:

    examples:
      - location:
          from:
            $ref: "#/components/schemas/location/examples/0"
          to:
            $ref: "#/components/schemas

You have to use static values 🙂

[nilkanth987]

@jonaslagoni , Its very cumbersome to write same examples again. Also the asyncapi extension in the VS code accepts the code and displays properly.

Its working when I reference an object 1 time in the example but only when I reference the object twice in the examples it throws error.

[jonaslagoni]

Then the extension is bugged, it does not validate before resolving references.

I would highly recommend you to create a feature request in the spec 😄 Its not the first time hearing this use case, so its good one 👍

[nilkanth987]

@jonaslagoni , I created a feature request, check and let me know if something is missing.
Should I close this issue?

[jonaslagoni]

As its not an issue with Modelina but the spec itself, yes please do 🙂

[nilkanth987]

@jonaslagoni , I checked by replacing the references with static values but it still gives me error. Here is the example

asyncapi: 2.6.0
info:
  title: Test API
  version: 0.0.21
defaultContentType: application/json
channels:
  /test:
    publish:
      message:
        $ref: "#/components/messages/testMessage"
components:
  messages:
    testMessage:
      name: testMessage
      payload:
        type: object
        $id: testMessage
        properties:
          location:
            type: object
            properties:
              from:
                $ref: "#/components/schemas/location"
              to:
                $ref: "#/components/schemas/location"
        examples:
          - location:
              from:
                lat: 101
                lng: 102
              to:
                lat: 101
                lng: 102
  schemas:
    location:
      type: object
      $id: location
      properties:
        lat:
          type: number
        lng:
          type: number
      examples:
        - lat: 101
          lng: 102

Here I have replaced the references in examples with the static values and I receive the below error

Input is not a correct AsyncAPI document so it cannot be processed.
asyncapi.yml
 27:13  error  asyncapi2-schema-examples  reference "location" resolves to more than one schema  components.messages.testMessage.payload.examples[0]
 44:11  error  asyncapi2-schema-examples  schema with key or id "location" already exists        components.schemas.location.examples[0]

If I remove the examples from location schema then only 1 error comes

Input is not a correct AsyncAPI document so it cannot be processed.
asyncapi.yml
 27:13  error  asyncapi2-schema-examples  reference "location" resolves to more than one schema  components.messages.testMessage.payload.examples[0]

I think there is some bug in example validation which throws error when the schema1 has multiple references to schema2.
Let me know if you need more clarification.

[jonaslagoni]

Yep, but it's parser related 🙂 Moving the issue

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[github-actions]

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