org.stilavia.service.zalando.RequestContext.java Source code

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Here is the source code for org.stilavia.service.zalando.RequestContext.java

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/*
 * Copyright 2015 Stilavia S.L.
 *
 * 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 org.stilavia.service.zalando;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.*;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.client.RestTemplate;

import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Arrays;

/**
 * Created by guillermoblascojimenez on 15/06/15.
 */
public class RequestContext {

    private final String host;
    private final ZalandoApi.Domain domain;
    private final String clientId;
    private final HttpClient httpClient;
    private final ClientHttpRequestFactory requestFactory;
    private final RestTemplate restTemplate;

    public RequestContext(String host, ZalandoApi.Domain domain, String clientId) {
        this.host = host;
        this.domain = domain;
        this.clientId = clientId;
        this.httpClient = HttpClientBuilder.create().build();
        this.requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
        restTemplate = new RestTemplate(requestFactory);
        restTemplate.setMessageConverters(Arrays
                .<HttpMessageConverter<?>>asList(new MappingJackson2HttpMessageConverter(new ObjectMapper())));

    }

    public RestUriBuilder getUriBuilder() {
        return new RestUriBuilder().protocol("https").host(host);
    }

    public <E> E execute(RestUriBuilder uriBuilder, ParameterizedTypeReference<E> entityClass)
            throws IOException, URISyntaxException {

        HttpHeaders headers = new HttpHeaders();
        headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
        headers.set("Accept-Language", domain.getLocale());
        headers.set("Accept-Encoding", "gzip,deflate");
        if (this.clientId != null) {
            headers.set("x-client-name", this.clientId);
        }
        HttpEntity<E> httpEntity = new HttpEntity<E>(headers);
        ResponseEntity<E> response = restTemplate.exchange(uriBuilder.build(), HttpMethod.GET, httpEntity,
                entityClass);

        return response.getBody();
    }

}