Added Kotlin Vert.x client

[anttileppa]

Added support for Vert.X library into Kotlin Client generator. New generator can be tested using kotlin-client generator with vertx library.

Ping @jimschubert

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[wing328]

cc @jimschubert (2017/09) ❤️, @dr4ke616 (2018/08) @karismann (2019/03) @Zomzog (2019/04) @andrewemery (2019/10) @4brunu (2019/11) @yutaka0m (2020/03)

[wing328]

can you please resolve the merge conflicts when you've time?

[anttileppa]

@wing328 conflicts resolved

[wing328]

I got some errors when testing the new kotlin vertx client:

): [ERROR : TagRoomModel] defined in org.openapitools.client.models in file Tag.kt, public open fun toRoomModel(): [ERROR : UserRoomModel] defined in org.openapitools.client.models in file User.kt
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (65, 33): Unresolved reference: UserRoomModel
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (66, 9): Unresolved reference: UserRoomModel
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (67, 14): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (68, 12): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (69, 13): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (70, 12): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (71, 9): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (72, 12): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (73, 9): 'this' is not defined in this context
e: /Users/williamcheng/Code/openapi-generator3/samples/client/petstore/kotlin-jvm-vertx/src/main/kotlin/org/openapitools/client/models/User.kt: (74, 14): 'this' is not defined in this context

Here is the config I used:

generatorName: kotlin
outputDir: samples/client/petstore/kotlin-jvm-vertx
library: jvm-vertx
inputSpec: modules/openapi-generator/src/test/resources/3_0/petstore.yaml
templateDir: modules/openapi-generator/src/main/resources/kotlin-client
additionalProperties:
  artifactId: kotlin-petstore-jvm-vertx
  generateRoomModels: "true"
  serializationLibrary: "gson"

Does it work you locally?

Please also add the config to your PR and include the samples. then add a new item in https://github.com/OpenAPITools/openapi-generator/blob/master/.github/workflows/samples-kotlin-client.yaml#L53 to make sure it's tested when samples change.

[anttileppa]

@wing328 fixed issue you discovered and added samples for kotlin-jvm-ktor-gson, kotlin-jvm-vertx-gson, kotlin-jvm-vertx-jackson, kotlin-jvm-vertx-jackson-coroutines and kotlin-jvm-vertx-moshi generators (all included into samples-kotlin-client.yaml)

[wing328]

LGTM. Thanks for the PR 👍