src/main/java/org/onap/dmaap/dbcapi/aaf/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.aaf.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
  62                 String user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  63
  64                 String pwd = "";
  65                 String encPwd = p.getProperty( pwdProperty, "notSet" );
  66
  67                 AafDecrypt decryptor = new AafDecrypt();
  68                 pwd = decryptor.decrypt(encPwd);
  69
  70                 return user + ":" + pwd;
  71
  72
  73
  74         }
  75
  76
  77         public MrProvConnection( ) {
  78                 topicMgrCred =  getCred();
  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                 return makeConnection( provURL );
  89         }
  90
  91         private boolean makeConnection( String pURL ) {
  92                 logger.info( "makeConnection to " + pURL );
  93
  94                 try {
  95                         URL u = new URL( pURL );
  96                         uc = (HttpsURLConnection) u.openConnection();
  97                         uc.setInstanceFollowRedirects(false);
  98                         logger.info( "open connect to " + pURL );
  99                         return(true);
 100                 } catch( UnknownHostException uhe ){
 101                 logger.error( "Caught UnknownHostException for " + pURL);
 102                 return(false);
 103         } catch (Exception e) {
 104             logger.error("Unexpected error during openConnection of " + pURL );
 105             e.printStackTrace();
 106             return(false);
 107         }
 108
 109         }
 110
 111         static String bodyToString( InputStream is ) {
 112                 StringBuilder sb = new StringBuilder();
 113                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 114                 String line;
 115                 try {
 116                         while ((line = br.readLine()) != null ) {
 117                                 sb.append( line );
 118                         }
 119                 } catch (IOException ex ) {
 120                         errorLogger.error( "IOexception:" + ex);
 121                 }
 122
 123                 return sb.toString();
 124         }
 125
 126         public String doPostTopic( Topic postTopic, ApiError err ) {
 127                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 128
 129
 130                 String responsemessage = null;
 131                 int rc = -1;
 132
 133
 134                 try {
 135                         byte[] postData = postTopic.getBytes();
 136                         logger.info( "post fields=" + postData.toString() );
 137                         uc.setRequestProperty("Authorization", auth);
 138                         logger.info( "Authenticating with " + auth );
 139                         uc.setRequestMethod("POST");
 140                         uc.setRequestProperty("Content-Type", "application/json");
 141                         uc.setRequestProperty( "charset", "utf-8");
 142                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 143                         uc.setUseCaches(false);
 144                         uc.setDoOutput(true);
 145                         OutputStream os = null;
 146
 147
 148                         try {
 149                  uc.connect();
 150                  os = uc.getOutputStream();
 151                  os.write( postData );
 152
 153             } catch (ProtocolException pe) {
 154                  // Rcvd error instead of 100-Continue
 155                  try {
 156                      // work around glitch in Java 1.7.0.21 and likely others
 157                      // without this, Java will connect multiple times to the server to run the same request
 158                      uc.setDoOutput(false);
 159                  } catch (Exception e) {
 160                  }
 161             } catch ( UnknownHostException uhe ) {
 162                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 163                 err.setCode(500);
 164                 err.setMessage("Unknown Host Exception");
 165                 err.setFields( uc.getURL().getHost());
 166                 return new String( "500: " + uhe.getMessage());
 167             }catch ( ConnectException ce ) {
 168                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 169                 err.setCode(500);
 170                 err.setMessage("HTTP Connection Exception");
 171                 err.setFields( uc.getURL().getHost());
 172                 return new String( "500: " + ce.getMessage());
 173             }
 174                         rc = uc.getResponseCode();
 175                         logger.info( "http response code:" + rc );
 176                         err.setCode(rc);
 177             responsemessage = uc.getResponseMessage();
 178             logger.info( "responsemessage=" + responsemessage );
 179             err.setMessage(responsemessage);
 180
 181
 182             if (responsemessage == null) {
 183                  // work around for glitch in Java 1.7.0.21 and likely others
 184                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 185                  String h0 = uc.getHeaderField(0);
 186                  if (h0 != null) {
 187                      int i = h0.indexOf(' ');
 188                      int j = h0.indexOf(' ', i + 1);
 189                      if (i != -1 && j != -1) {
 190                          responsemessage = h0.substring(j + 1);
 191                      }
 192                  }
 193             }
 194             if (rc >= 200 && rc < 300 ) {
 195                         String responseBody = null;
 196                         responseBody = bodyToString( uc.getInputStream() );
 197                         logger.info( "responseBody=" + responseBody );
 198                         return responseBody;
 199
 200             }
 201
 202                 } catch (Exception e) {
 203             System.err.println("Unable to read response  " );
 204             e.printStackTrace();
 205         }
 206                 finally {
 207                         try {
 208                                 uc.disconnect();
 209                         } catch ( Exception e ) {}
 210                 }
 211                 return new String( rc +": " + responsemessage );
 212
 213         }
 214
 215
 216
 217
 218 }