package com.ctrip.apollo.common.auth;

 import java.io.UnsupportedEncodingException;

 import java.util.ArrayList;

 import java.util.Collection;

 import org.apache.http.Header;

 import org.apache.http.auth.AuthScope;

 import org.apache.http.auth.UsernamePasswordCredentials;

 import org.apache.http.impl.client.BasicCredentialsProvider;

 import org.apache.http.impl.client.CloseableHttpClient;

 import org.apache.http.impl.client.HttpClientBuilder;

 import org.apache.http.message.BasicHeader;

 import org.springframework.beans.factory.FactoryBean;

 import org.springframework.beans.factory.InitializingBean;

 import org.springframework.beans.factory.annotation.Autowired;

 import org.springframework.boot.autoconfigure.web.HttpMessageConverters;

 import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;

 import org.springframework.stereotype.Component;

 import org.springframework.web.client.RestTemplate;

 import com.google.common.io.BaseEncoding;

 @Component

 public class RestTemplateFactory implements FactoryBean<RestTemplate>, InitializingBean {

   @Autowired

   private HttpMessageConverters httpMessageConverters;

   private RestTemplate restTemplate;

   public RestTemplate getObject() {

     return restTemplate;

   }

   public Class<RestTemplate> getObjectType() {

     return RestTemplate.class;

   }

   public boolean isSingleton() {

     return true;

   }

   public void afterPropertiesSet() throws UnsupportedEncodingException {

     Collection<Header> defaultHeaders = new ArrayList<Header>();

     Header header = new BasicHeader("Authorization",

         "Basic " + BaseEncoding.base64().encode("apollo:".getBytes("UTF-8")));

     defaultHeaders.add(header);

     BasicCredentialsProvider credentialsProvider = new BasicCredentialsProvider();

     credentialsProvider.setCredentials(AuthScope.ANY,

         new UsernamePasswordCredentials("apollo", ""));

     CloseableHttpClient httpClient =

         HttpClientBuilder.create().setDefaultCredentialsProvider(credentialsProvider)

             .setDefaultHeaders(defaultHeaders).build();

     restTemplate = new RestTemplate(httpMessageConverters.getConverters());

     restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory(httpClient));

   }

 }