KeycloakTokenVerifier.scala

class KeycloakTokenVerifier(keycloakDeployment: KeycloakDeployment) extends TokenVerifier {
  implicit val executionContext = ExecutionContext.fromExecutor(new ForkJoinPool(2))

  def verifyToken(token: String): Future[String] = {
    Future {
      RSATokenVerifier.verifyToken(
        token,
        keycloakDeployment.getRealmKey,
        keycloakDeployment.getRealmInfoUrl
      ).getPreferredUsername
    }
  }
}