lh.api.showcase.server.util.HttpClientUtils.java Source code

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Here is the source code for lh.api.showcase.server.util.HttpClientUtils.java

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/*
 * Copyright 2015 Loic Merckel
 * 
 * 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 lh.api.showcase.server.util;

import lh.api.showcase.server.config.proxy.HasProxySettings;

import org.apache.http.HttpHost;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;

import com.google.common.base.Preconditions;

import java.util.logging.Logger;

public class HttpClientUtils {

    private static Logger logger = Logger.getLogger(HttpClientUtils.class.getName());

    private HttpClientUtils() {
        super();
        throw new IllegalStateException();
    }

    public static CloseableHttpClient createHttpClient(HasProxySettings proxySetting,
            PoolingHttpClientConnectionManager connectionManager) {
        // http://hc.apache.org/httpcomponents-client-ga/tutorial/html/connmgmt.html#d5e475

        HttpClientBuilder clientBuilder = HttpClients.custom();
        if (proxySetting != null && proxySetting.isActive()) {
            logger.info("Set the http proxy (" + proxySetting.getHost() + ":" + proxySetting.getPort() + ")");
            CredentialsProvider credsProvider = Preconditions.checkNotNull(proxySetting.getCredentialsProvider());
            HttpHost proxy = new HttpHost(proxySetting.getHost(), proxySetting.getPort());
            DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);

            clientBuilder.setRoutePlanner(routePlanner).setDefaultCredentialsProvider(credsProvider);
        }
        if (connectionManager != null) {
            clientBuilder.setConnectionManager(connectionManager);
        }
        return clientBuilder.build();
    }
}