AuthenticationGateway.kt

@Component
class AuthenticationGateway(private val properties: AuthenticationProperties [1]) : MicroserviceGateway() [2] {
    override var webClient: WebClient = ClientBuilder() [3]
        .withBaseUrl(properties.baseUrl)
        .withFailOnUnknownProperty(false)
        .withNamingStrategy(PropertyNamingStrategy.SNAKE_CASE)
        .build()

    fun authenticate(): AuthenticationToken [4] {
        val request =
            AuthenticationRequestBody(
                properties.username,
                properties.password,
                "password"
            )

        val headers = mapOf("Accept-Version" to "v1")

        return post("/tokens", request, headers, AuthenticationToken::class) [5]
    }
}