src/main/java/org/onap/dmaap/dbcapi/aaf/AafConnection.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;
  22
  23
  24
  25
  26
  27 import java.io.BufferedReader;
  28 import java.io.IOException;
  29 import java.io.InputStream;
  30 import java.io.InputStreamReader;
  31 import java.io.OutputStream;
  32 import java.net.ProtocolException;
  33 import java.net.URL;
  34 import java.net.UnknownHostException;
  35 import java.net.ConnectException;
  36
  37 import javax.net.ssl.HttpsURLConnection;
  38 import javax.net.ssl.SSLHandshakeException;
  39
  40 import org.apache.commons.codec.binary.Base64;
  41 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  42 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  43 import org.onap.dmaap.dbcapi.service.DmaapService;
  44 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  45
  46
  47 public class AafConnection extends BaseLoggingClass {
  48
  49
  50
  51
  52
  53         private String aafCred;
  54         private String unit_test;
  55
  56
  57         private HttpsURLConnection uc;
  58
  59
  60         public AafConnection( String cred ) {
  61                 aafCred = cred;
  62                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  63         unit_test = p.getProperty( "UnitTest", "No" );
  64
  65         }
  66
  67
  68         private boolean makeConnection( String pURL ) {
  69
  70                 try {
  71                         URL u = new URL( pURL );
  72                         uc = (HttpsURLConnection) u.openConnection();
  73                         uc.setInstanceFollowRedirects(false);
  74                         logger.info( "successful connect to " + pURL );
  75                         return(true);
  76                 } catch ( UnknownHostException uhe ) {
  77                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
  78             uhe.printStackTrace();
  79             return(false);
  80                 } catch (Exception e) {
  81                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_ERROR,  pURL, e.getMessage() );
  82             e.printStackTrace();
  83             return(false);
  84         }
  85
  86         }
  87
  88         static String bodyToString( InputStream is ) {
  89                 StringBuilder sb = new StringBuilder();
  90                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
  91                 String line;
  92                 try {
  93                         while ((line = br.readLine()) != null ) {
  94                                 sb.append( line );
  95                         }
  96                 } catch (IOException ex ) {
  97                         errorLogger.error( DmaapbcLogMessageEnum.IO_EXCEPTION,  ex.getMessage());
  98                 }
  99
 100                 return sb.toString();
 101         }
 102
 103
 104
 105         public int postAaf( AafObject obj, String pURL ) {
 106                 logger.info( "entry: postAaf() to  " + pURL  );
 107                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 108                 int rc = -1;
 109
 110
 111                 if ( ! makeConnection( pURL ) ) {
 112                         return rc;
 113                 };
 114
 115
 116                 byte[] postData = obj.getBytes();
 117                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 118                 String responsemessage = null;
 119                 String responseBody = null;
 120
 121                 try {
 122                         if (auth != null) {
 123                                 uc.setRequestProperty("Authorization", auth);
 124                 }
 125                         uc.setRequestMethod("POST");
 126                         uc.setRequestProperty("Content-Type", "application/json");
 127                         uc.setRequestProperty( "charset", "utf-8");
 128                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 129                         uc.setUseCaches(false);
 130                         uc.setDoOutput(true);
 131                         OutputStream os = null;
 132
 133
 134                         try {
 135                  uc.connect();
 136                  os = uc.getOutputStream();
 137                  os.write( postData );
 138
 139             } catch (ProtocolException pe) {
 140                  // Rcvd error instead of 100-Continue
 141                  try {
 142                      // work around glitch in Java 1.7.0.21 and likely others
 143                      // without this, Java will connect multiple times to the server to run the same request
 144                      uc.setDoOutput(false);
 145                  } catch (Exception e) {
 146                  }
 147             } catch ( SSLHandshakeException she ) {
 148                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 149                         } catch ( UnknownHostException uhe ) {
 150                                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
 151                 rc = 500;
 152                 return rc;
 153             } catch ( ConnectException ce ) {
 154                                 if ( unit_test.equals( "Yes" ) ) {
 155                                         rc = 201;
 156                                         return rc;
 157                                 }
 158                                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION,  pURL, ce.getMessage() );
 159                 rc = 500;
 160                 return rc;
 161                         }
 162                         try {
 163                                 rc = uc.getResponseCode();
 164                         } catch ( SSLHandshakeException she ) {
 165                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 166                 rc = 500;
 167                 return rc;
 168             }
 169                         logger.info( "http response code:" + rc );
 170             responsemessage = uc.getResponseMessage();
 171             logger.info( "responsemessage=" + responsemessage );
 172
 173             if (responsemessage == null) {
 174                  // work around for glitch in Java 1.7.0.21 and likely others
 175                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 176                  String h0 = uc.getHeaderField(0);
 177                  if (h0 != null) {
 178                      int i = h0.indexOf(' ');
 179                      int j = h0.indexOf(' ', i + 1);
 180                      if (i != -1 && j != -1) {
 181                          responsemessage = h0.substring(j + 1);
 182                      }
 183                  }
 184             }
 185             if ( rc >= 200 && rc < 300 ) {
 186                 responseBody = bodyToString( uc.getInputStream() );
 187                 logger.info( "responseBody=" + responseBody );
 188             } else {
 189                         logger.warn( "Unsuccessful response: " + responsemessage );
 190             }
 191
 192                 } catch (Exception e) {
 193             System.err.println("Unable to read response  " );
 194             e.printStackTrace();
 195         }
 196                 finally {
 197                         try {
 198                                 uc.disconnect();
 199                         } catch ( Exception e ) {}
 200                 }
 201                 //return responseBody;
 202
 203                 return rc;
 204
 205         }
 206
 207         public int delAaf(AafObject obj, String pURL) {
 208                 logger.info( "entry: delAaf() to  " + pURL  );
 209                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 210                 int rc = -1;
 211
 212
 213                 if ( ! makeConnection( pURL ) ) {
 214                         return rc;
 215                 };
 216
 217
 218                 byte[] postData = obj.getBytes();
 219                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 220                 String responsemessage = null;
 221                 String responseBody = null;
 222
 223                 try {
 224                         if (auth != null) {
 225                                 uc.setRequestProperty("Authorization", auth);
 226                 }
 227                         uc.setRequestMethod("DELETE");
 228                         uc.setRequestProperty("Content-Type", "application/json");
 229                         uc.setRequestProperty( "charset", "utf-8");
 230                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 231                         uc.setUseCaches(false);
 232                         uc.setDoOutput(true);
 233                         OutputStream os = null;
 234
 235
 236                         try {
 237                  uc.connect();
 238                  os = uc.getOutputStream();
 239                  os.write( postData );
 240
 241             } catch (ProtocolException pe) {
 242                  // Rcvd error instead of 100-Continue
 243                  try {
 244                      // work around glitch in Java 1.7.0.21 and likely others
 245                      // without this, Java will connect multiple times to the server to run the same request
 246                      uc.setDoOutput(false);
 247                  } catch (Exception e) {
 248                  }
 249             } catch ( SSLHandshakeException she ) {
 250                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 251             }
 252                         try {
 253                                 rc = uc.getResponseCode();
 254                         } catch ( SSLHandshakeException she ) {
 255                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 256                 rc = 500;
 257                 return rc;
 258             }
 259                         logger.info( "http response code:" + rc );
 260             responsemessage = uc.getResponseMessage();
 261             logger.info( "responsemessage=" + responsemessage );
 262
 263             if (responsemessage == null) {
 264                  // work around for glitch in Java 1.7.0.21 and likely others
 265                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 266                  String h0 = uc.getHeaderField(0);
 267                  if (h0 != null) {
 268                      int i = h0.indexOf(' ');
 269                      int j = h0.indexOf(' ', i + 1);
 270                      if (i != -1 && j != -1) {
 271                          responsemessage = h0.substring(j + 1);
 272                      }
 273                  }
 274             }
 275             if ( rc >= 200 && rc < 300 ) {
 276                 responseBody = bodyToString( uc.getInputStream() );
 277                 logger.info( "responseBody=" + responseBody );
 278             } else {
 279                         logger.warn( "Unsuccessful response: " + responsemessage );
 280             }
 281
 282                 } catch (Exception e) {
 283             System.err.println("Unable to read response  " );
 284             e.printStackTrace();
 285         }
 286                 //return responseBody;
 287
 288                 return rc;
 289
 290         }
 291
 292
 293 }