/* * Copyright © 2018 Tinkoff Bank * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package ru.tinkoff; /* * @author Snezhana Krass */ import io.vavr.control.Try; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import spark.ResponseTransformer; import static ru.tinkoff.ParserUtils.writeAsString; public class JsonTransformer implements ResponseTransformer { private static final Logger logger = LoggerFactory.getLogger(JsonTransformer.class); @Override public String render(Object model) { Try<String> rendered = writeAsString(model); if (rendered.isSuccess()) { return rendered.get(); } else { return null; } } }