YAML merge keys are identified as as Invalid Key errors

[jamiethompson]

When using YAML merge keys to merge in aliases, the merge keys are identified as errors 'Invalid key'

Example YAML

responses:
  <<: *default_response
  201:
    description: Created
    schema:
      $ref: '#/definitions/ProductVariation'

[semonte]

Hi @jamiethompson

Thanks for reporting this, needs to be fixed.

[jamiethompson]

No problem. I have also just this morning noticed that using merge keys also appears to break the Swagger UI generation.

[semonte]

@jamiethompson are you able to share the Swagger file a bit more? How does the default_response element look like?

I want to create proper tests for the merge keys, this would be valuable test data.

[jamiethompson]

No problem, here's what the &default_response anchor looks like

responses:
    Default: &default_response
      # Errors
      400:
        $ref: '#/responses/400BadRequest'
      401:
        $ref: '#/responses/401Unauthorized'
      403:
        $ref: '#/responses/403Forbidden'
      404:
        $ref: '#/responses/404NotFound'
      409:
        $ref: '#/responses/409Conflict'
      429:
        $ref: '#/responses/429TooManyRequests'
      500:
        $ref: '#/responses/500InternalServerError'
      503:
        $ref: '#/responses/503ServiceUnavailable'

Let me know if you need anything more

[semonte]

No problem. I have also just this morning noticed that using merge keys also appears to break the Swagger UI generation.

Unfortunately Jackson does not support transforming YAML to JSON with merge keys and anchors (we use Jackson to transform YAML to JSON for Swagger UI).

[semonte]

Thanks for the example spec, this is fixed now. I still need to make a release, should happen by the end of next week.

[jamiethompson]

No problem. I look forward to the release 😄

[semonte]

FYI: I made a PR for JetBrains about anchors and aliases in YAML files. In the future we can hopefully jump to declaration by clicking an alias :) JetBrains/intellij-community#577

[jamiethompson]

Wow, thanks. That would make writing large specs so much easier.

[semonte]

@jamiethompson The plugin has been updated, you should no longer see the errors.

[jamiethompson]

Thank you. Updated today. Works a treat.

[naufq]

No problem. I have also just this morning noticed that using merge keys also appears to break the Swagger UI generation.

Unfortunately Jackson does not support transforming YAML to JSON with merge keys and anchors (we use Jackson to transform YAML to JSON for Swagger UI).

Does Swagger UI still suffer from this issue?