com.royclarkson.springagram.RestUtils.java Source code

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Here is the source code for com.royclarkson.springagram.RestUtils.java

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/*
 * Copyright 2014 Roy Clarkson
 *
 * 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.royclarkson.springagram;

import org.springframework.hateoas.hal.ResourceMappingJackson2HttpMessageConverter;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.client.RestTemplate;

import java.util.Collections;

/**
 * @author Roy Clarkson
 */
class RestUtils {

    private static RestTemplate restTemplate;

    private static HttpEntity<Void> requestEntity;

    public static RestTemplate getInstance() {
        if (restTemplate == null) {
            restTemplate = new RestTemplate(Collections
                    .<HttpMessageConverter<?>>singletonList(new ResourceMappingJackson2HttpMessageConverter()));
        }
        return restTemplate;
    }

    public static HttpEntity<Void> getRequestEntity() {
        if (requestEntity == null) {
            HttpHeaders requestHeaders = new HttpHeaders();
            requestHeaders.setAccept(Collections.singletonList(new MediaType("application", "hal+json")));
            requestEntity = new HttpEntity<Void>(requestHeaders);
        }
        return requestEntity;
    }

}