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 com.google.gson.Gson;
  26 import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
  27 import java.io.BufferedReader;
  28 import java.io.DataOutputStream;
  29 import java.io.InputStream;
  30 import java.io.InputStreamReader;
  31 import java.net.HttpURLConnection;
  32 import java.net.URL;
  33 import org.apache.logging.log4j.LogManager;
  34 import org.apache.logging.log4j.Logger;
  35
  36 public class TopicUtil {
  37
  38         private static final Logger logger = LogManager.getLogger(TopicUtil.class);
  39
  40         public String publishTopic(String topicURL, String topicname, String mechid, String password, String message) {
  41                 try {
  42                         String requestURL = topicURL + "/events/" + topicname;
  43                         String authString = mechid + ":" + password;
  44                         String authStringEnc = Base64.encode(authString.getBytes());
  45                         URL url = new URL(requestURL);
  46                         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  47                         connection.setRequestMethod("POST");
  48                         connection.setDoOutput(true);
  49                         connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
  50                         connection.setRequestProperty("Content-Type", "application/json");
  51                         connection.setRequestProperty("Content-Length", Integer.toString(message.length()));
  52                         DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
  53                         wr.write(message.getBytes());
  54
  55                         InputStream content = (InputStream) connection.getInputStream();
  56                         BufferedReader in = new BufferedReader(new InputStreamReader(content));
  57                         String line;
  58                         String response = "";
  59                         while ((line = in.readLine()) != null) {
  60                                 response = response + line;
  61                         }
  62                         return response;
  63
  64                 } catch (Exception e) {
  65                         logger.error(" Exception Occered " + e);
  66                         return "ERROR:" + e.getLocalizedMessage();
  67                 }
  68         }
  69
  70         public String subscribeTopic(String topicURL, String topicname, String timeout, String mechid, String password) {
  71                 String response = "";
  72                 try {
  73                         String requestURL = topicURL + "/events/" + topicname + "/mirrormakeragent/1?timeout=" + timeout
  74                                         + "&limit=1";
  75                         String authString = mechid + ":" + password;
  76                         String authStringEnc = Base64.encode(authString.getBytes());
  77                         URL url = new URL(requestURL);
  78                         HttpURLConnection connection = (HttpURLConnection) url.openConnection();
  79                         connection.setRequestMethod("GET");
  80                         connection.setDoOutput(true);
  81                         connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
  82                         connection.setRequestProperty("Content-Type", "application/json");
  83                         InputStream content = (InputStream) connection.getInputStream();
  84                         BufferedReader in = new BufferedReader(new InputStreamReader(content));
  85                         String line;
  86
  87                         while ((line = in.readLine()) != null) {
  88                                 response = response + line;
  89                         }
  90                         Gson g = new Gson();
  91                         // get message as JSON String Array
  92                         String[] topicMessage = g.fromJson(response, String[].class);
  93                         if (topicMessage.length != 0) {
  94                                 return topicMessage[0];
  95                         }
  96                 } catch (Exception e) {
  97                         logger.error(" Exception Occered " + e);
  98                         return "ERROR:" + e.getMessage() + " Server Response is:" + response;
  99                 }
 100                 return null;
 101         }
 102
 103 }