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.HttpURLConnection;
  30 import java.net.ProtocolException;
  31 import java.net.URL;
  32 import java.net.UnknownHostException;
  33
  34 import javax.net.ssl.HttpsURLConnection;
  35
  36 import org.apache.commons.codec.binary.Base64;
  37 import org.apache.log4j.Logger;
  38 import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
  39 import org.onap.dmaap.dbcapi.aaf.AafService;
  40 import org.onap.dmaap.dbcapi.aaf.DecryptionInterface;
  41 import org.onap.dmaap.dbcapi.aaf.AafService.ServiceType;
  42 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  43 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  44 import org.onap.dmaap.dbcapi.model.ApiError;
  45 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  46 import org.onap.dmaap.dbcapi.model.Topic;
  47 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  48
  49 public class MrProvConnection extends BaseLoggingClass{
  50
  51         private String provURL;
  52
  53         private HttpURLConnection uc;
  54
  55
  56         private String topicMgrCred;
  57         private boolean useAAF;
  58         private String  user;
  59         private String  encPwd;
  60
  61         public MrProvConnection() {
  62                 String mechIdProperty = "aaf.TopicMgrUser";
  63                 String pwdProperty = "aaf.TopicMgrPassword";
  64                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  65                 user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  66                 encPwd = p.getProperty( pwdProperty, "notSet" );
  67                 useAAF= "true".equalsIgnoreCase(p.getProperty("UseAAF", "false"));
  68                 topicMgrCred =  getCred();
  69
  70         }
  71
  72         private String getCred( ) {
  73
  74
  75                 String pwd = "";
  76                 AafDecrypt decryptor = new AafDecrypt();
  77                 pwd = decryptor.decrypt(encPwd);
  78                 return user + ":" + pwd;
  79         }
  80
  81
  82         public boolean makeTopicConnection( MR_Cluster cluster ) {
  83                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  84
  85
  86                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  87
  88                 if ( cluster.getTopicProtocol().equals( "https" ) ) {
  89                         return makeSecureConnection( provURL );
  90                 }
  91                 return makeConnection( provURL );
  92         }
  93
  94         private boolean makeSecureConnection( String pURL ) {
  95                 logger.info( "makeConnection to " + pURL );
  96
  97                 try {
  98                         URL u = new URL( pURL );
  99                         uc = (HttpsURLConnection) u.openConnection();
 100                         uc.setInstanceFollowRedirects(false);
 101                         logger.info( "open connect to " + pURL );
 102                         return(true);
 103                 } catch( UnknownHostException uhe ){
 104                 logger.error( "Caught UnknownHostException for " + pURL);
 105                 return(false);
 106         } catch (Exception e) {
 107             logger.error("Unexpected error during openConnection of " + pURL );
 108             e.printStackTrace();
 109             return(false);
 110         }
 111
 112         }
 113         private boolean makeConnection( String pURL ) {
 114                 logger.info( "makeConnection to " + pURL );
 115
 116                 try {
 117                         URL u = new URL( pURL );
 118                         uc = (HttpURLConnection) u.openConnection();
 119                         uc.setInstanceFollowRedirects(false);
 120                         logger.info( "open connect to " + pURL );
 121                         return(true);
 122                 } catch( UnknownHostException uhe ){
 123                 logger.error( "Caught UnknownHostException for " + pURL);
 124                 return(false);
 125         } catch (Exception e) {
 126             logger.error("Unexpected error during openConnection of " + pURL );
 127             e.printStackTrace();
 128             return(false);
 129         }
 130
 131         }
 132
 133         static String bodyToString( InputStream is ) {
 134                 StringBuilder sb = new StringBuilder();
 135                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 136                 String line;
 137                 try {
 138                         while ((line = br.readLine()) != null ) {
 139                                 sb.append( line );
 140                         }
 141                 } catch (IOException ex ) {
 142                         errorLogger.error( "IOexception:" + ex);
 143                 }
 144
 145                 return sb.toString();
 146         }
 147
 148         public String doPostTopic( Topic postTopic, ApiError err ) {
 149                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 150
 151
 152                 String responsemessage = null;
 153                 int rc = -1;
 154
 155
 156                 try {
 157                         byte[] postData = postTopic.getBytes();
 158                         logger.info( "post fields=" + postData.toString() );
 159
 160                         // when not using AAF, do not attempt Basic Authentication
 161                         if ( useAAF ) {
 162                                 uc.setRequestProperty("Authorization", auth);
 163                                 logger.info( "Authenticating with " + auth );
 164                         }
 165                         uc.setRequestMethod("POST");
 166                         uc.setRequestProperty("Content-Type", "application/json");
 167                         uc.setRequestProperty( "charset", "utf-8");
 168                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 169                         uc.setUseCaches(false);
 170                         uc.setDoOutput(true);
 171                         OutputStream os = null;
 172
 173
 174                         try {
 175                  uc.connect();
 176                  os = uc.getOutputStream();
 177                  os.write( postData );
 178
 179             } catch (ProtocolException pe) {
 180                  // Rcvd error instead of 100-Continue
 181                  try {
 182                      // work around glitch in Java 1.7.0.21 and likely others
 183                      // without this, Java will connect multiple times to the server to run the same request
 184                      uc.setDoOutput(false);
 185                  } catch (Exception e) {
 186                  }
 187             } catch ( UnknownHostException uhe ) {
 188                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 189                 err.setCode(500);
 190                 err.setMessage("Unknown Host Exception");
 191                 err.setFields( uc.getURL().getHost());
 192                 return new String( "500: " + uhe.getMessage());
 193             }catch ( ConnectException ce ) {
 194                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 195                 err.setCode(500);
 196                 err.setMessage("HTTP Connection Exception");
 197                 err.setFields( uc.getURL().getHost());
 198                 return new String( "500: " + ce.getMessage());
 199             }
 200                         rc = uc.getResponseCode();
 201                         logger.info( "http response code:" + rc );
 202                         err.setCode(rc);
 203             responsemessage = uc.getResponseMessage();
 204             logger.info( "responsemessage=" + responsemessage );
 205             err.setMessage(responsemessage);
 206
 207
 208             if (responsemessage == null) {
 209                  // work around for glitch in Java 1.7.0.21 and likely others
 210                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 211                  String h0 = uc.getHeaderField(0);
 212                  if (h0 != null) {
 213                      int i = h0.indexOf(' ');
 214                      int j = h0.indexOf(' ', i + 1);
 215                      if (i != -1 && j != -1) {
 216                          responsemessage = h0.substring(j + 1);
 217                      }
 218                  }
 219             }
 220             if (rc >= 200 && rc < 300 ) {
 221                         String responseBody = null;
 222                         responseBody = bodyToString( uc.getInputStream() );
 223                         logger.info( "responseBody=" + responseBody );
 224                         return responseBody;
 225
 226             }
 227
 228                 } catch (Exception e) {
 229             System.err.println("Unable to read response  " );
 230             e.printStackTrace();
 231         }
 232                 finally {
 233                         try {
 234                                 uc.disconnect();
 235                         } catch ( Exception e ) {}
 236                 }
 237                 return new String( rc +": " + responsemessage );
 238
 239         }
 240
 241
 242
 243
 244 }