com.visionarts.powerjambda.actions.JsonResponseWriter Maven / Gradle / Ivy

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/*
 * Copyright 2017 the original author or authors.
 *
 * 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 com.visionarts.powerjambda.actions;

import java.util.Collections;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.net.HttpHeaders;
import com.google.common.net.MediaType;
import com.visionarts.powerjambda.AwsProxyResponse;
import com.visionarts.powerjambda.ResponseWriter;
import com.visionarts.powerjambda.models.ResponseEntity;
import com.visionarts.powerjambda.utils.Utils;

public class JsonResponseWriter extends ResponseWriter {

    private final ObjectMapper om = Utils.getObjectMapper();

    @Override
    protected AwsProxyResponse writeEntity(T value) throws JsonProcessingException {
        return new AwsProxyResponse(200, Collections.emptyMap(),
                        om.writeValueAsString(value))
                    .addHeader(HttpHeaders.CONTENT_TYPE, MediaType.JSON_UTF_8.toString());
    }

    @Override
    protected AwsProxyResponse writeEntity(ResponseEntity value) throws JsonProcessingException {
        return new AwsProxyResponse(value.getStatusCode(), value.getHeaders(),
                        om.writeValueAsString(value.getBody()))
                    .addHeader(HttpHeaders.CONTENT_TYPE, MediaType.JSON_UTF_8.toString());
    }
}