Java tutorial
/* * Copyright 2012 Smartling, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this work except in compliance with the License. * You may obtain a copy of the License in the LICENSE file, or 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.smartling.api.sdk.util; import org.apache.commons.lang3.StringUtils; import org.apache.http.HttpHost; import org.apache.http.auth.AuthScope; import org.apache.http.auth.UsernamePasswordCredentials; import org.apache.http.client.CredentialsProvider; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.HttpRequestBase; import org.apache.http.impl.client.BasicCredentialsProvider; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import com.smartling.api.sdk.ProxyConfiguration; public class HttpProxyUtils { public HttpProxyUtils() { } /** * Get a request config given the applicable request and proxy config if any * @param httpRequest request * @param proxyConfiguration configuration of proxy to use * @return org.apache.http.client.config.RequestConfig */ public RequestConfig getProxyRequestConfig(HttpRequestBase httpRequest, final ProxyConfiguration proxyConfiguration) { if (hasActiveProxyConfiguration(proxyConfiguration)) { HttpHost proxyHttpHost = new HttpHost(proxyConfiguration.getHost(), proxyConfiguration.getPort()); return RequestConfig.custom().setProxy(proxyHttpHost).build(); } return null; } /** * Get an HttpClient given a proxy config if any * @param proxyConfiguration configuration of proxy to use * @return org.apache.http.impl.client.CloseableHttpClient */ public CloseableHttpClient getHttpClient(final ProxyConfiguration proxyConfiguration) { HttpClientBuilder httpClientBuilder = getHttpClientBuilder(); if (proxyAuthenticationRequired(proxyConfiguration)) { CredentialsProvider credentialsProvider = new BasicCredentialsProvider(); credentialsProvider.setCredentials( new AuthScope(proxyConfiguration.getHost(), proxyConfiguration.getPort()), new UsernamePasswordCredentials(proxyConfiguration.getUsername(), proxyConfiguration.getPassword())); httpClientBuilder = httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider); } return httpClientBuilder.build(); } HttpClientBuilder getHttpClientBuilder() { return HttpClientBuilder.create(); } private static boolean hasActiveProxyConfiguration(final ProxyConfiguration proxyConfiguration) { return proxyConfiguration != null && proxyConfiguration.getHost() != null && proxyConfiguration.getPort() != 0; } private static boolean proxyAuthenticationRequired(final ProxyConfiguration proxyConfiguration) { return hasActiveProxyConfiguration(proxyConfiguration) && StringUtils.isNotEmpty(proxyConfiguration.getUsername()) && StringUtils.isNotEmpty(proxyConfiguration.getPassword()); } }