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
  58         private String getCred( ) {
  59                 String mechIdProperty = "aaf.TopicMgrUser";
  60                 String pwdProperty = "aaf.TopicMgrPassword";
  61                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  62                 logger.info( "templog:getCred: 10");
  63
  64                 String user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  65                 logger.info( "templog:getCred: 20");
  66
  67                 String pwd = "";
  68                 String encPwd = p.getProperty( pwdProperty, "notSet" );
  69                 logger.info( "templog:getCred: 30");
  70
  71                 AafDecrypt decryptor = new AafDecrypt();
  72                 logger.info( "templog:getCred: 40");
  73                 pwd = decryptor.decrypt(encPwd);
  74                 logger.info( "templog:getCred: 50");
  75
  76                 return user + ":" + pwd;
  77
  78
  79
  80         }
  81
  82
  83         public MrProvConnection( ) {
  84                 topicMgrCred =  getCred();
  85
  86         }
  87
  88         public boolean makeTopicConnection( MR_Cluster cluster ) {
  89                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  90
  91
  92                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  93
  94                 if ( cluster.getTopicProtocol().equals( "https" ) ) {
  95                         return makeSecureConnection( provURL );
  96                 }
  97                 return makeConnection( provURL );
  98         }
  99
 100         private boolean makeSecureConnection( String pURL ) {
 101                 logger.info( "makeConnection to " + pURL );
 102
 103                 try {
 104                         URL u = new URL( pURL );
 105                         uc = (HttpsURLConnection) u.openConnection();
 106                         uc.setInstanceFollowRedirects(false);
 107                         logger.info( "open connect to " + pURL );
 108                         return(true);
 109                 } catch( UnknownHostException uhe ){
 110                 logger.error( "Caught UnknownHostException for " + pURL);
 111                 return(false);
 112         } catch (Exception e) {
 113             logger.error("Unexpected error during openConnection of " + pURL );
 114             e.printStackTrace();
 115             return(false);
 116         }
 117
 118         }
 119         private boolean makeConnection( String pURL ) {
 120                 logger.info( "makeConnection to " + pURL );
 121
 122                 try {
 123                         URL u = new URL( pURL );
 124                         uc = (HttpURLConnection) u.openConnection();
 125                         uc.setInstanceFollowRedirects(false);
 126                         logger.info( "open connect to " + pURL );
 127                         return(true);
 128                 } catch( UnknownHostException uhe ){
 129                 logger.error( "Caught UnknownHostException for " + pURL);
 130                 return(false);
 131         } catch (Exception e) {
 132             logger.error("Unexpected error during openConnection of " + pURL );
 133             e.printStackTrace();
 134             return(false);
 135         }
 136
 137         }
 138
 139         static String bodyToString( InputStream is ) {
 140                 StringBuilder sb = new StringBuilder();
 141                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 142                 String line;
 143                 try {
 144                         while ((line = br.readLine()) != null ) {
 145                                 sb.append( line );
 146                         }
 147                 } catch (IOException ex ) {
 148                         errorLogger.error( "IOexception:" + ex);
 149                 }
 150
 151                 return sb.toString();
 152         }
 153
 154         public String doPostTopic( Topic postTopic, ApiError err ) {
 155                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 156
 157
 158                 String responsemessage = null;
 159                 int rc = -1;
 160
 161
 162                 try {
 163                         byte[] postData = postTopic.getBytes();
 164                         logger.info( "post fields=" + postData.toString() );
 165                         uc.setRequestProperty("Authorization", auth);
 166                         logger.info( "Authenticating with " + auth );
 167                         uc.setRequestMethod("POST");
 168                         uc.setRequestProperty("Content-Type", "application/json");
 169                         uc.setRequestProperty( "charset", "utf-8");
 170                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 171                         uc.setUseCaches(false);
 172                         uc.setDoOutput(true);
 173                         OutputStream os = null;
 174
 175
 176                         try {
 177                  uc.connect();
 178                  os = uc.getOutputStream();
 179                  os.write( postData );
 180
 181             } catch (ProtocolException pe) {
 182                  // Rcvd error instead of 100-Continue
 183                  try {
 184                      // work around glitch in Java 1.7.0.21 and likely others
 185                      // without this, Java will connect multiple times to the server to run the same request
 186                      uc.setDoOutput(false);
 187                  } catch (Exception e) {
 188                  }
 189             } catch ( UnknownHostException uhe ) {
 190                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 191                 err.setCode(500);
 192                 err.setMessage("Unknown Host Exception");
 193                 err.setFields( uc.getURL().getHost());
 194                 return new String( "500: " + uhe.getMessage());
 195             }catch ( ConnectException ce ) {
 196                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 197                 err.setCode(500);
 198                 err.setMessage("HTTP Connection Exception");
 199                 err.setFields( uc.getURL().getHost());
 200                 return new String( "500: " + ce.getMessage());
 201             }
 202                         rc = uc.getResponseCode();
 203                         logger.info( "http response code:" + rc );
 204                         err.setCode(rc);
 205             responsemessage = uc.getResponseMessage();
 206             logger.info( "responsemessage=" + responsemessage );
 207             err.setMessage(responsemessage);
 208
 209
 210             if (responsemessage == null) {
 211                  // work around for glitch in Java 1.7.0.21 and likely others
 212                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 213                  String h0 = uc.getHeaderField(0);
 214                  if (h0 != null) {
 215                      int i = h0.indexOf(' ');
 216                      int j = h0.indexOf(' ', i + 1);
 217                      if (i != -1 && j != -1) {
 218                          responsemessage = h0.substring(j + 1);
 219                      }
 220                  }
 221             }
 222             if (rc >= 200 && rc < 300 ) {
 223                         String responseBody = null;
 224                         responseBody = bodyToString( uc.getInputStream() );
 225                         logger.info( "responseBody=" + responseBody );
 226                         return responseBody;
 227
 228             }
 229
 230                 } catch (Exception e) {
 231             System.err.println("Unable to read response  " );
 232             e.printStackTrace();
 233         }
 234                 finally {
 235                         try {
 236                                 uc.disconnect();
 237                         } catch ( Exception e ) {}
 238                 }
 239                 return new String( rc +": " + responsemessage );
 240
 241         }
 242
 243
 244
 245
 246 }