org.nuxeo.elasticsearch.http.readonly.HttpClient.java Source code

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Here is the source code for org.nuxeo.elasticsearch.http.readonly.HttpClient.java

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package org.nuxeo.elasticsearch.http.readonly;/*
                                              * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and contributors.
                                              *
                                              * All rights reserved. This program and the accompanying materials
                                              * are made available under the terms of the GNU Lesser General Public License
                                              * (LGPL) version 2.1 which accompanies this distribution, and is available at
                                              * http://www.gnu.org/licenses/lgpl-2.1.html
                                              *
                                              * This library is distributed in the hope that it will be useful,
                                              * but WITHOUT ANY WARRANTY; without even the implied warranty of
                                              * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
                                              * Lesser General Public License for more details.
                                              *
                                              * Contributors:
                                              *     Benoit Delbosc
                                              */

import java.io.IOException;

import javax.ws.rs.core.MediaType;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

/**
 * Http client that handle GET request with a body.
 *
 * @since 7.3
 */
public class HttpClient {
    private final static String UTF8_CHARSET = "UTF-8";

    private static class HttpGetWithEntity extends HttpPost {
        public final static String METHOD_NAME = "GET";

        public HttpGetWithEntity(String url) {
            super(url);
        }

        @Override
        public String getMethod() {
            return METHOD_NAME;
        }
    }

    public static String get(String url) throws IOException {
        CloseableHttpClient client = HttpClients.createDefault();
        HttpGet httpget = new HttpGet(url);
        try (CloseableHttpResponse response = client.execute(httpget)) {
            HttpEntity entity = response.getEntity();
            return entity != null ? EntityUtils.toString(entity) : null;
        }
    }

    public static String get(String url, String payload) throws IOException {
        if (payload == null) {
            return get(url);
        }
        CloseableHttpClient client = HttpClients.createDefault();
        HttpGetWithEntity e = new HttpGetWithEntity(url);
        StringEntity myEntity = new StringEntity(payload,
                ContentType.create(MediaType.APPLICATION_FORM_URLENCODED, UTF8_CHARSET));
        e.setEntity(myEntity);
        try (CloseableHttpResponse response = client.execute(e)) {
            HttpEntity entity = response.getEntity();
            return entity != null ? EntityUtils.toString(entity) : null;
        }
    }
}