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  * Modifications Copyright (C) 2019 IBM.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.onap.dmaap.dbcapi.client;
  23
  24 import org.apache.commons.codec.binary.Base64;
  25 import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
  26 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  27 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  28 import org.onap.dmaap.dbcapi.model.ApiError;
  29 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  30 import org.onap.dmaap.dbcapi.model.Topic;
  31 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  32
  33 import javax.net.ssl.HttpsURLConnection;
  34 import java.io.*;
  35 import java.net.*;
  36 import java.util.Arrays;
  37
  38 public class MrProvConnection extends BaseLoggingClass{
  39
  40         private String provURL;
  41
  42         private HttpURLConnection uc;
  43
  44
  45         private String topicMgrCred;
  46         private boolean useAAF;
  47         private String  user;
  48         private String  encPwd;
  49
  50         public MrProvConnection() {
  51                 String mechIdProperty = "aaf.TopicMgrUser";
  52                 String pwdProperty = "aaf.TopicMgrPassword";
  53                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  54                 user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  55                 encPwd = p.getProperty( pwdProperty, "notSet" );
  56                 useAAF= "true".equalsIgnoreCase(p.getProperty("UseAAF", "false"));
  57                 topicMgrCred =  getCred();
  58
  59         }
  60
  61         private String getCred( ) {
  62
  63
  64                 String pwd = "";
  65                 AafDecrypt decryptor = new AafDecrypt();
  66                 pwd = decryptor.decrypt(encPwd);
  67                 return user + ":" + pwd;
  68         }
  69
  70
  71         public boolean makeTopicConnection( MR_Cluster cluster ) {
  72                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  73
  74
  75                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  76
  77                 if ( cluster.getTopicProtocol().equals( "https" ) ) {
  78                         return makeSecureConnection( provURL );
  79                 }
  80                 return makeConnection( provURL );
  81         }
  82
  83         private boolean makeSecureConnection( String pURL ) {
  84                 logger.info( "makeConnection to " + pURL );
  85
  86                 try {
  87                         URL u = new URL( pURL );
  88                         uc = (HttpsURLConnection) u.openConnection();
  89                         uc.setInstanceFollowRedirects(false);
  90                         logger.info( "open connect to " + pURL );
  91                         return(true);
  92                 } catch( UnknownHostException uhe ){
  93                 logger.error( "Caught UnknownHostException for " + pURL);
  94                 return(false);
  95         } catch (Exception e) {
  96             logger.error("Unexpected error during openConnection of " + pURL );
  97             e.printStackTrace();
  98             return(false);
  99         }
 100
 101         }
 102         private boolean makeConnection( String pURL ) {
 103                 logger.info( "makeConnection to " + pURL );
 104
 105                 try {
 106                         URL u = new URL( pURL );
 107                         uc = (HttpURLConnection) u.openConnection();
 108                         uc.setInstanceFollowRedirects(false);
 109                         logger.info( "open connect to " + pURL );
 110                         return(true);
 111                 } catch( UnknownHostException uhe ){
 112                 logger.error( "Caught UnknownHostException for " + pURL);
 113                 return(false);
 114         } catch (Exception e) {
 115             logger.error("Unexpected error during openConnection of " + pURL );
 116             e.printStackTrace();
 117             return(false);
 118         }
 119
 120         }
 121
 122         static String bodyToString( InputStream is ) {
 123                 StringBuilder sb = new StringBuilder();
 124                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 125                 String line;
 126                 try {
 127                         while ((line = br.readLine()) != null ) {
 128                                 sb.append( line );
 129                         }
 130                 } catch (IOException ex ) {
 131                         errorLogger.error( "IOexception:" + ex);
 132                 }
 133
 134                 return sb.toString();
 135         }
 136
 137         public String doPostTopic( Topic postTopic, ApiError err ) {
 138                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 139
 140
 141                 String responsemessage = null;
 142                 int rc = -1;
 143
 144
 145                 try {
 146                         byte[] postData = postTopic.getBytes();
 147                         logger.info( "post fields=" + Arrays.toString(postData));
 148
 149                         // when not using AAF, do not attempt Basic Authentication
 150                         if ( useAAF ) {
 151                                 uc.setRequestProperty("Authorization", auth);
 152                                 logger.info( "Authenticating with " + auth );
 153                         }
 154                         uc.setRequestMethod("POST");
 155                         uc.setRequestProperty("Content-Type", "application/json");
 156                         uc.setRequestProperty( "charset", "utf-8");
 157                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 158                         uc.setUseCaches(false);
 159                         uc.setDoOutput(true);
 160                         OutputStream os = null;
 161
 162
 163                         try {
 164                  uc.connect();
 165                  os = uc.getOutputStream();
 166                  os.write( postData );
 167
 168             } catch (ProtocolException pe) {
 169                  // Rcvd error instead of 100-Continue
 170                  try {
 171                      // work around glitch in Java 1.7.0.21 and likely others
 172                      // without this, Java will connect multiple times to the server to run the same request
 173                      uc.setDoOutput(false);
 174                  } catch (Exception e) {
 175                  }
 176             } catch ( UnknownHostException uhe ) {
 177                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 178                 err.setCode(500);
 179                 err.setMessage("Unknown Host Exception");
 180                 err.setFields( uc.getURL().getHost());
 181                 return new String( "500: " + uhe.getMessage());
 182             }catch ( ConnectException ce ) {
 183                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 184                 err.setCode(500);
 185                 err.setMessage("HTTP Connection Exception");
 186                 err.setFields( uc.getURL().getHost());
 187                 return new String( "500: " + ce.getMessage());
 188             }
 189                         rc = uc.getResponseCode();
 190                         logger.info( "http response code:" + rc );
 191                         err.setCode(rc);
 192             responsemessage = uc.getResponseMessage();
 193             logger.info( "responsemessage=" + responsemessage );
 194             err.setMessage(responsemessage);
 195
 196
 197             if (responsemessage == null) {
 198                  // work around for glitch in Java 1.7.0.21 and likely others
 199                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 200                  String h0 = uc.getHeaderField(0);
 201                  if (h0 != null) {
 202                      int i = h0.indexOf(' ');
 203                      int j = h0.indexOf(' ', i + 1);
 204                      if (i != -1 && j != -1) {
 205                          responsemessage = h0.substring(j + 1);
 206                      }
 207                  }
 208             }
 209             if (rc >= 200 && rc < 300 ) {
 210                         String responseBody = null;
 211                         responseBody = bodyToString( uc.getInputStream() );
 212                         logger.info( "responseBody=" + responseBody );
 213                         return responseBody;
 214
 215             }
 216
 217                 } catch (Exception e) {
 218                         errorLogger.error("Unable to read response  " );
 219
 220         }
 221                 finally {
 222                         try {
 223                                 uc.disconnect();
 224                         } catch ( Exception e ) {
 225                                 errorLogger.error("Unable to disconnect");
 226                         }
 227                 }
 228                 return new String( rc +": " + responsemessage );
 229
 230         }
 231
 232
 233
 234
 235 }