src/main/java/org/onap/dmaap/dbcapi/client/MrProvConnection.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.onap.dmaap
   4  * ================================================================================
   5  * Copyright (C) 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  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.dmaap.dbcapi.client;
  22
  23 import java.io.BufferedReader;
  24 import java.io.IOException;
  25 import java.io.InputStream;
  26 import java.io.InputStreamReader;
  27 import java.io.OutputStream;
  28 import java.net.ConnectException;
  29 import java.net.ProtocolException;
  30 import java.net.URL;
  31 import java.net.UnknownHostException;
  32
  33 import javax.net.ssl.HttpsURLConnection;
  34
  35 import org.apache.commons.codec.binary.Base64;
  36 import org.apache.log4j.Logger;
  37 import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
  38 import org.onap.dmaap.dbcapi.aaf.AafService;
  39 import org.onap.dmaap.dbcapi.aaf.DecryptionInterface;
  40 import org.onap.dmaap.dbcapi.aaf.AafService.ServiceType;
  41 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  42 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  43 import org.onap.dmaap.dbcapi.model.ApiError;
  44 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  45 import org.onap.dmaap.dbcapi.model.Topic;
  46 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  47
  48 public class MrProvConnection extends BaseLoggingClass{
  49
  50         private String provURL;
  51
  52         private HttpsURLConnection uc;
  53
  54
  55         private String topicMgrCred;
  56
  57         private String getCred( ) {
  58                 String mechIdProperty = "aaf.TopicMgrUser";
  59                 String pwdProperty = "aaf.TopicMgrPassword";
  60                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  61                 logger.info( "templog:getCred: 10");
  62
  63                 String user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  64                 logger.info( "templog:getCred: 20");
  65
  66                 String pwd = "";
  67                 String encPwd = p.getProperty( pwdProperty, "notSet" );
  68                 logger.info( "templog:getCred: 30");
  69
  70                 AafDecrypt decryptor = new AafDecrypt();
  71                 logger.info( "templog:getCred: 40");
  72                 pwd = decryptor.decrypt(encPwd);
  73                 logger.info( "templog:getCred: 50");
  74
  75                 return user + ":" + pwd;
  76
  77
  78
  79         }
  80
  81
  82         public MrProvConnection( ) {
  83                 topicMgrCred =  getCred();
  84
  85         }
  86
  87         public boolean makeTopicConnection( MR_Cluster cluster ) {
  88                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  89
  90
  91                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  92
  93                 return makeConnection( provURL );
  94         }
  95
  96         private boolean makeConnection( String pURL ) {
  97                 logger.info( "makeConnection to " + pURL );
  98
  99                 try {
 100                         URL u = new URL( pURL );
 101                         uc = (HttpsURLConnection) u.openConnection();
 102                         uc.setInstanceFollowRedirects(false);
 103                         logger.info( "open connect to " + pURL );
 104                         return(true);
 105                 } catch( UnknownHostException uhe ){
 106                 logger.error( "Caught UnknownHostException for " + pURL);
 107                 return(false);
 108         } catch (Exception e) {
 109             logger.error("Unexpected error during openConnection of " + pURL );
 110             e.printStackTrace();
 111             return(false);
 112         }
 113
 114         }
 115
 116         static String bodyToString( InputStream is ) {
 117                 StringBuilder sb = new StringBuilder();
 118                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 119                 String line;
 120                 try {
 121                         while ((line = br.readLine()) != null ) {
 122                                 sb.append( line );
 123                         }
 124                 } catch (IOException ex ) {
 125                         errorLogger.error( "IOexception:" + ex);
 126                 }
 127
 128                 return sb.toString();
 129         }
 130
 131         public String doPostTopic( Topic postTopic, ApiError err ) {
 132                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 133
 134
 135                 String responsemessage = null;
 136                 int rc = -1;
 137
 138
 139                 try {
 140                         byte[] postData = postTopic.getBytes();
 141                         logger.info( "post fields=" + postData.toString() );
 142                         uc.setRequestProperty("Authorization", auth);
 143                         logger.info( "Authenticating with " + auth );
 144                         uc.setRequestMethod("POST");
 145                         uc.setRequestProperty("Content-Type", "application/json");
 146                         uc.setRequestProperty( "charset", "utf-8");
 147                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 148                         uc.setUseCaches(false);
 149                         uc.setDoOutput(true);
 150                         OutputStream os = null;
 151
 152
 153                         try {
 154                  uc.connect();
 155                  os = uc.getOutputStream();
 156                  os.write( postData );
 157
 158             } catch (ProtocolException pe) {
 159                  // Rcvd error instead of 100-Continue
 160                  try {
 161                      // work around glitch in Java 1.7.0.21 and likely others
 162                      // without this, Java will connect multiple times to the server to run the same request
 163                      uc.setDoOutput(false);
 164                  } catch (Exception e) {
 165                  }
 166             } catch ( UnknownHostException uhe ) {
 167                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 168                 err.setCode(500);
 169                 err.setMessage("Unknown Host Exception");
 170                 err.setFields( uc.getURL().getHost());
 171                 return new String( "500: " + uhe.getMessage());
 172             }catch ( ConnectException ce ) {
 173                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 174                 err.setCode(500);
 175                 err.setMessage("HTTP Connection Exception");
 176                 err.setFields( uc.getURL().getHost());
 177                 return new String( "500: " + ce.getMessage());
 178             }
 179                         rc = uc.getResponseCode();
 180                         logger.info( "http response code:" + rc );
 181                         err.setCode(rc);
 182             responsemessage = uc.getResponseMessage();
 183             logger.info( "responsemessage=" + responsemessage );
 184             err.setMessage(responsemessage);
 185
 186
 187             if (responsemessage == null) {
 188                  // work around for glitch in Java 1.7.0.21 and likely others
 189                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 190                  String h0 = uc.getHeaderField(0);
 191                  if (h0 != null) {
 192                      int i = h0.indexOf(' ');
 193                      int j = h0.indexOf(' ', i + 1);
 194                      if (i != -1 && j != -1) {
 195                          responsemessage = h0.substring(j + 1);
 196                      }
 197                  }
 198             }
 199             if (rc >= 200 && rc < 300 ) {
 200                         String responseBody = null;
 201                         responseBody = bodyToString( uc.getInputStream() );
 202                         logger.info( "responseBody=" + responseBody );
 203                         return responseBody;
 204
 205             }
 206
 207                 } catch (Exception e) {
 208             System.err.println("Unable to read response  " );
 209             e.printStackTrace();
 210         }
 211                 finally {
 212                         try {
 213                                 uc.disconnect();
 214                         } catch ( Exception e ) {}
 215                 }
 216                 return new String( rc +": " + responsemessage );
 217
 218         }
 219
 220
 221
 222
 223 }