Swagger Codegen - Unexpected missing property for name response - node.js

Question

I am trying to generate node.js-server stub using codegen. I have downloaded the swagger-codegen-cli-2.3.1.jar file and am trying to generate the code using cli command.
However, it is failing with the following error message:
[main] ERROR io.swagger.codegen.DefaultCodegen - unexpected missing property for name response
[main] WARN io.swagger.codegen.DefaultCodegen - skipping invalid array property {
"baseName" : "response",
"getter" : "getResponse",
....
"isReadOnly" : false,
"vendorExtensions" : { },
"hasValidation" : false,
"isXmlAttribute" : false,
"isXmlWrapped" : false
}
[main] ERROR io.swagger.codegen.DefaultCodegen - unexpected missing property for name response
Exception in thread "main" java.lang.RuntimeException: Could not process operation:
Tag: Tag {
name: messages
description: Messages for blue instance
externalDocs: null
extensions:{}}
Operation: listMessages
Resource: get /instances/{instanceId}/messages
Definitions: {message-common=io.swagger.models.ModelImpl#e68ed4e0, Error Response=io.swagger.models.ModelImpl#7bcf5e6c}
Exception: null
at io.swagger.codegen.DefaultGenerator.processOperation(DefaultGenerator.java:932)
at io.swagger.codegen.DefaultGenerator.processPaths(DefaultGenerator.java:808)
at io.swagger.codegen.DefaultGenerator.generateApis(DefaultGenerator.java:431)
at io.swagger.codegen.DefaultGenerator.generate(DefaultGenerator.java:746)
at io.swagger.codegen.cmd.Generate.run(Generate.java:285)
at io.swagger.codegen.SwaggerCodegen.main(SwaggerCodegen.java:35)
Caused by: java.lang.NullPointerException
... 5 more
Here is an excerpt from my swagger definitions file.
I did adding/removing x-swagger-router-controller attribute, but that did not help either.
swagger: '2.0'
info:
title: Messages API
version: '1.0'
description: |-
Call used to get messages
host: 'localhost:8080'
paths:
'/instances/{instanceId}/messages':
get:
summary: Get all messages
operationId: listMessages
responses:
'200':
description: 'Success Response'
schema:
type: array
items:
title: Message Output
description: The properties that are included
allOf:
- type: object
properties:
id:
type: string
- title: Message Common
description: The properties that are shared
type: object
properties:
message:
type: string
description: Operation the system must do
details:
type: string
description: 'Textual data'
required:
- message
- details
'401':
description: Unauthorized requests
schema:
type: object
title: Error Response
description: Standard error message.
properties:
errors:
type: array
items:
type: object
properties:
code:
type: string
description: Human readable category
message:
type: string
description: Detailed error message
required:
- code
- message
required:
- errors
'500':
description: Response for other issues
schema:
type: object
title: Error Response
description: Standard error message.
properties:
errors:
type: array
items:
type: object
properties:
code:
type: string
description: Human readable category
message:
type: string
description: Detailed error message
required:
- code
- message
required:
- errors
description: 'Call used to get messages, notices, and/or instructions from E&E system for the product to take. '
parameters:
- name: Digest
in: header
type: string
description: The digest for the body being passed
tags:
- messages
parameters:
- name: instanceId
in: path
type: string
required: true
description: The specific instance for which the message is relevant
basePath: /v1
schemes:
- http
consumes:
- application/json
produces:
- application/json
tags:
- name: messages
description: Messages for instance
Please help. Not sure what I am missing here.

Answer 1

It looks like the error is caused by inline models in responses. While this is perfectly valid, it might be that Swagger Codegen does not support this. You can open an issue in the Swagger Codegen repository.
Try putting the model definitions in the global definitions section, so that your responses section looks like this:
responses:
'200':
description: 'Success Response'
schema:
type: array
items:
$ref: '#/definitions/Message'
'401':
description: Unauthorized requests
schema:
$ref: '#/definitions/Error'
'500':
description: Response for other issues
schema:
$ref: '#/definitions/Error'