Enable Kotlin

To enable using Kotlin, add the following to your pom.xml:

		<dependency>
			<groupId>net.officefloor.kotlin</groupId>
			<artifactId>officekotlin</artifactId>
		</dependency>

Kotlin

The Kotlin to service the request is:

package net.officefloor.tutorial.kotlinhttpserver

import net.officefloor.web.ObjectResponse

fun service(request: KotlinRequest, response: ObjectResponse<KotlinResponse>) {
	response.send(KotlinResponse("Hello ${request.name} from Kotlin"))
}

REST Endpoint

The REST endpoint routing POST requests to '/' to the Kotlin function is configured as follows:

Kotlin:
  resource: net.officefloor.tutorial.kotlinhttpserver.KotlinLogicKt
  procedure: Kotlin
  method: service

Kotlin Data Objects

As part of supporting Kotlin, the necessary Jackson support is included to enable sending/receiving Kotlin data classes as JSON.

The request / response data classes are as follows:

@HttpObject
data class KotlinRequest(val name: String)

data class KotlinResponse(val message: String)

Testing

As Kotlin is integrated well with Java, the following demonstrates writing tests with Kotlin:

    @RegisterExtension
    @JvmField
    public val server = MockWoofServerExtension()

    @Test
    fun service() {
        val response = this.server.send(MockWoofServer.mockJsonRequest(HttpMethod.POST, "/", KotlinRequest("Daniel")));
        response.assertJson(200, KotlinResponse("Hello Daniel from Kotlin"));
    }

JUnit 4 example:

    @Rule
    @JvmField
    public val server = MockWoofServerRule()

    @Test
    fun service() {
        val response = this.server.send(MockWoofServer.mockJsonRequest(HttpMethod.POST, "/", KotlinRequest("Daniel")));
        response.assertJson(200, KotlinResponse("Hello Daniel from Kotlin"));
    }