Dropwizard with Gradle and Kotlin

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A "getting started" Dropwizard project in Kotlin with a Gradle build

To keep things compact, the application code is in a single Kotlin file, with a health check defined in HWHealthCheck

To build, test and run:

gradle test
gradle build shadowJar  &&  gradle run

The app can also be run with: java -jar build/libs/hello-dropwizard.jar server config.yml

A test drive:

$ curl -X POST -H "Content-Type: application/json" \
  -d '{"id": 1, "content" : "bob"}' \
  http://localhost:8080/hello-world

{"id":1,"content":"bye bob"}

$ curl -X POST -H "Content-Type: application/json" \
  -d '{"id": 1, "content" : "bob123"}' \
  http://localhost:8080/hello-world

{"errors":["content length must be between 0 and 3"]}