src/main/java/org/onap/dmaap/mr/dmaapMMAgent/TopicUtil.java

   1 /*******************************************************************************
   2  *  ============LICENSE_START=======================================================
   3  *  org.onap.dmaap
   4  *  ================================================================================
   5  *  Copyright Â© 2017 AT&T Intellectual Property. All rights reserved.
   6  *  ================================================================================
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *  You may obtain a copy of the License at
  10  *        http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  *  ============LICENSE_END=========================================================
  18  *
  19  *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
  20  *
  21  *******************************************************************************/
  22
  23 package org.onap.dmaap.mr.dmaapMMAgent;
  24
  25 import java.io.BufferedReader;
  26 import java.io.DataOutputStream;
  27 import java.io.InputStream;
  28 import java.io.InputStreamReader;
  29 import java.net.HttpURLConnection;
  30 import java.net.URL;
  31
  32 import org.apache.log4j.Logger;
  33
  34 import com.google.gson.Gson;
  35 import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
  36
  37 public class TopicUtil {
  38
  39         static final Logger logger = Logger.getLogger(TopicUtil.class);
  40
  41         public String publishTopic(String topicURL, String topicname, String mechid, String password, String message) {
  42                 try {
  43                         String requestURL = topicURL + "/events/" + topicname;
  44                         String authString = mechid + ":" + password;
  45                         String authStringEnc = Base64.encode(authString.getBytes());
  46                         URL url = new URL(requestURL);
  47                         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  48                         connection.setRequestMethod("POST");
  49                         connection.setDoOutput(true);
  50                         connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
  51                         connection.setRequestProperty("Content-Type", "application/json");
  52                         connection.setRequestProperty("Content-Length", Integer.toString(message.length()));
  53                         DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
  54                         wr.write(message.getBytes());
  55
  56                         InputStream content = (InputStream) connection.getInputStream();
  57                         BufferedReader in = new BufferedReader(new InputStreamReader(content));
  58                         String line;
  59                         String response = "";
  60                         while ((line = in.readLine()) != null) {
  61                                 response = response + line;
  62                         }
  63                         return response;
  64
  65                 } catch (Exception e) {
  66                         logger.error(" Exception Occered " + e);
  67                         return "ERROR:" + e.getLocalizedMessage();
  68                 }
  69         }
  70
  71         public String subscribeTopic(String topicURL, String topicname, String timeout, String mechid, String password) {
  72                 String response = "";
  73                 try {
  74                         String requestURL = topicURL + "/events/" + topicname + "/mirrormakeragent/1?timeout=" + timeout
  75                                         + "&limit=1";
  76                         String authString = mechid + ":" + password;
  77                         String authStringEnc = Base64.encode(authString.getBytes());
  78                         URL url = new URL(requestURL);
  79                         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  80                         connection.setRequestMethod("GET");
  81                         connection.setDoOutput(true);
  82                         connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
  83                         connection.setRequestProperty("Content-Type", "application/json");
  84                         InputStream content = (InputStream) connection.getInputStream();
  85                         BufferedReader in = new BufferedReader(new InputStreamReader(content));
  86                         String line;
  87
  88                         while ((line = in.readLine()) != null) {
  89                                 response = response + line;
  90                         }
  91                         Gson g = new Gson();
  92                         // get message as JSON String Array
  93                         String[] topicMessage = g.fromJson(response, String[].class);
  94                         if (topicMessage.length != 0) {
  95                                 return topicMessage[0];
  96                         }
  97                 } catch (Exception e) {
  98                         logger.error(" Exception Occered " + e);
  99                         return "ERROR:" + e.getMessage() + " Server Response is:" + response;
 100                 }
 101                 return null;
 102         }
 103
 104 }