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package org.onap.demo.oss;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;

public class OSSRestClient {
 private static final String IP = "104.239.99.99";
 private static final String HTTP_PORT = "88";

 private void robotHealthCheck() {
   Client client = ClientBuilder.newClient();
 client.register(new Authenticator("test","test"));
 WebTarget rootTarget = client.target("http://" + IP + ":" + HTTP_PORT);
 WebTarget latestTarget = rootTarget.path("/");
 try {
         System.out.println(latestTarget.request().get(String.class));
 } catch (Exception e)  { e.printStackTrace();
 } finally { client.close(); }
 }

 public static void main(String[] args) {
      OSSRestClient client = new OSSRestClient();
 client.robotHealthCheck();
 }
}

package org.onap.demo.oss;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientRequestFilter;

import javax.xml.bind.DatatypeConverter;

public class Authenticator implements ClientRequestFilter {
 private final String user;
 private final String pass;

 public Authenticator(String user, String password) {
      this.user = user; this.pass = password;
 }

 public void filter(ClientRequestContext requestContext) throws IOException {
   MultivaluedMap<String, Object> headMap = requestContext.getHeaders();
 String basicAuth = null;
 try {
         String aToken = user + ":" + pass;
 basicAuth = "BASIC " + DatatypeConverter.printBase64Binary(aToken.getBytes("UTF-8"));
 } catch (UnsupportedEncodingException uee) { throw new IllegalStateException("Encoding with UTF-8 failed", uee);}
   headMap.add("Authorization", basicAuth);
 }
}