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) 2018 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 java.io.BufferedReader;
  25 import java.io.IOException;
  26 import java.io.InputStream;
  27 import java.io.InputStreamReader;
  28 import java.io.OutputStream;
  29 import java.net.ConnectException;
  30 import java.net.HttpURLConnection;
  31 import java.net.ProtocolException;
  32 import java.net.URL;
  33 import java.net.UnknownHostException;
  34 import java.util.Arrays;
  35
  36 import javax.net.ssl.HttpsURLConnection;
  37
  38 import org.apache.commons.codec.binary.Base64;
  39 import org.apache.log4j.Logger;
  40 import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
  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 HttpURLConnection uc;
  53
  54
  55         private String topicMgrCred;
  56         private boolean useAAF;
  57         private String  user;
  58         private String  encPwd;
  59
  60         public MrProvConnection() {
  61                 String mechIdProperty = "aaf.TopicMgrUser";
  62                 String pwdProperty = "aaf.TopicMgrPassword";
  63                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  64                 user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  65                 encPwd = p.getProperty( pwdProperty, "notSet" );
  66                 useAAF= "true".equalsIgnoreCase(p.getProperty("UseAAF", "false"));
  67                 topicMgrCred =  getCred();
  68
  69         }
  70
  71         private String getCred( ) {
  72
  73
  74                 String pwd = "";
  75                 AafDecrypt decryptor = new AafDecrypt();
  76                 pwd = decryptor.decrypt(encPwd);
  77                 return user + ":" + pwd;
  78         }
  79
  80
  81         public boolean makeTopicConnection( MR_Cluster cluster ) {
  82                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  83
  84
  85                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  86
  87                 if ( cluster.getTopicProtocol().equals( "https" ) ) {
  88                         return makeSecureConnection( provURL );
  89                 }
  90                 return makeConnection( provURL );
  91         }
  92
  93         private boolean makeSecureConnection( String pURL ) {
  94                 logger.info( "makeConnection to " + pURL );
  95
  96                 try {
  97                         URL u = new URL( pURL );
  98                         uc = (HttpsURLConnection) u.openConnection();
  99                         uc.setInstanceFollowRedirects(false);
 100                         logger.info( "open connect to " + pURL );
 101                         return(true);
 102                 } catch( UnknownHostException uhe ){
 103                 logger.error( "Caught UnknownHostException for " + pURL);
 104                 return(false);
 105         } catch (Exception e) {
 106             logger.error("Unexpected error during openConnection of " + pURL );
 107             e.printStackTrace();
 108             return(false);
 109         }
 110
 111         }
 112         private boolean makeConnection( String pURL ) {
 113                 logger.info( "makeConnection to " + pURL );
 114
 115                 try {
 116                         URL u = new URL( pURL );
 117                         uc = (HttpURLConnection) u.openConnection();
 118                         uc.setInstanceFollowRedirects(false);
 119                         logger.info( "open connect to " + pURL );
 120                         return(true);
 121                 } catch( UnknownHostException uhe ){
 122                 logger.error( "Caught UnknownHostException for " + pURL);
 123                 return(false);
 124         } catch (Exception e) {
 125             logger.error("Unexpected error during openConnection of " + pURL );
 126             e.printStackTrace();
 127             return(false);
 128         }
 129
 130         }
 131
 132         static String bodyToString( InputStream is ) {
 133                 StringBuilder sb = new StringBuilder();
 134                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 135                 String line;
 136                 try {
 137                         while ((line = br.readLine()) != null ) {
 138                                 sb.append( line );
 139                         }
 140                 } catch (IOException ex ) {
 141                         errorLogger.error( "IOexception:" + ex);
 142                 }
 143
 144                 return sb.toString();
 145         }
 146
 147         public String doPostTopic( Topic postTopic, ApiError err ) {
 148                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 149
 150
 151                 String responsemessage = null;
 152                 int rc = -1;
 153
 154
 155                 try {
 156                         byte[] postData = postTopic.getBytes();
 157                         logger.info( "post fields=" + Arrays.toString(postData));
 158
 159                         // when not using AAF, do not attempt Basic Authentication
 160                         if ( useAAF ) {
 161                                 uc.setRequestProperty("Authorization", auth);
 162                                 logger.info( "Authenticating with " + auth );
 163                         }
 164                         uc.setRequestMethod("POST");
 165                         uc.setRequestProperty("Content-Type", "application/json");
 166                         uc.setRequestProperty( "charset", "utf-8");
 167                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 168                         uc.setUseCaches(false);
 169                         uc.setDoOutput(true);
 170                         OutputStream os = null;
 171
 172
 173                         try {
 174                  uc.connect();
 175                  os = uc.getOutputStream();
 176                  os.write( postData );
 177
 178             } catch (ProtocolException pe) {
 179                  // Rcvd error instead of 100-Continue
 180                  try {
 181                      // work around glitch in Java 1.7.0.21 and likely others
 182                      // without this, Java will connect multiple times to the server to run the same request
 183                      uc.setDoOutput(false);
 184                  } catch (Exception e) {
 185                  }
 186             } catch ( UnknownHostException uhe ) {
 187                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 188                 err.setCode(500);
 189                 err.setMessage("Unknown Host Exception");
 190                 err.setFields( uc.getURL().getHost());
 191                 return new String( "500: " + uhe.getMessage());
 192             }catch ( ConnectException ce ) {
 193                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 194                 err.setCode(500);
 195                 err.setMessage("HTTP Connection Exception");
 196                 err.setFields( uc.getURL().getHost());
 197                 return new String( "500: " + ce.getMessage());
 198             }
 199                         rc = uc.getResponseCode();
 200                         logger.info( "http response code:" + rc );
 201                         err.setCode(rc);
 202             responsemessage = uc.getResponseMessage();
 203             logger.info( "responsemessage=" + responsemessage );
 204             err.setMessage(responsemessage);
 205
 206
 207             if (responsemessage == null) {
 208                  // work around for glitch in Java 1.7.0.21 and likely others
 209                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 210                  String h0 = uc.getHeaderField(0);
 211                  if (h0 != null) {
 212                      int i = h0.indexOf(' ');
 213                      int j = h0.indexOf(' ', i + 1);
 214                      if (i != -1 && j != -1) {
 215                          responsemessage = h0.substring(j + 1);
 216                      }
 217                  }
 218             }
 219             if (rc >= 200 && rc < 300 ) {
 220                         String responseBody = null;
 221                         responseBody = bodyToString( uc.getInputStream() );
 222                         logger.info( "responseBody=" + responseBody );
 223                         return responseBody;
 224
 225             }
 226
 227                 } catch (Exception e) {
 228                         errorLogger.error("Unable to read response  " );
 229
 230         }
 231                 finally {
 232                         try {
 233                                 uc.disconnect();
 234                         } catch ( Exception e ) {
 235                                 errorLogger.error("Unable to disconnect");
 236                         }
 237                 }
 238                 return new String( rc +": " + responsemessage );
 239
 240         }
 241
 242
 243
 244
 245 }