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.util.DmaapConfig;
  44
  45
  46 public class AafConnection extends BaseLoggingClass {
  47
  48
  49
  50
  51
  52         private String aafCred;
  53         private String unit_test;
  54
  55
  56         private HttpsURLConnection uc;
  57
  58
  59         public AafConnection( String cred ) {
  60                 aafCred = cred;
  61                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  62         unit_test = p.getProperty( "UnitTest", "No" );
  63
  64         }
  65
  66
  67         private boolean makeConnection( String pURL ) {
  68
  69                 try {
  70                         URL u = new URL( pURL );
  71                         uc = (HttpsURLConnection) u.openConnection();
  72                         uc.setInstanceFollowRedirects(false);
  73                         logger.info( "successful connect to " + pURL );
  74                         return(true);
  75                 } catch ( UnknownHostException uhe ) {
  76                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
  77                 logger.error("Error", uhe);
  78             return(false);
  79                 } catch (Exception e) {
  80                         logger.error("Error", 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(),ex);
  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                 logger.error("Error", pe);
 141                  // Rcvd error instead of 100-Continue
 142                  try {
 143                      // work around glitch in Java 1.7.0.21 and likely others
 144                      // without this, Java will connect multiple times to the server to run the same request
 145                      uc.setDoOutput(false);
 146                  } catch (Exception e) {
 147                          logger.error("Error", e);
 148                  }
 149             } catch ( SSLHandshakeException she ) {
 150                 logger.error("Error", she);
 151                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 152                         } catch ( UnknownHostException uhe ) {
 153                                 logger.error("Error", uhe);
 154                                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
 155                 rc = 500;
 156                 return rc;
 157             } catch ( ConnectException ce ) {
 158                 logger.error("Error", ce);
 159                                 if ( "Yes".equals(unit_test) ) {
 160                                         rc = 201;
 161                                         return rc;
 162                                 }
 163                                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION,  pURL, ce.getMessage() );
 164                 rc = 500;
 165                 return rc;
 166                         }
 167                         try {
 168                                 rc = uc.getResponseCode();
 169                         } catch ( SSLHandshakeException she ) {
 170                                 logger.error("Error", she);
 171                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 172                 rc = 500;
 173                 return rc;
 174             }
 175                         logger.info( "http response code:" + rc );
 176             responsemessage = uc.getResponseMessage();
 177             logger.info( "responsemessage=" + responsemessage );
 178
 179             if (responsemessage == null) {
 180                  // work around for glitch in Java 1.7.0.21 and likely others
 181                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 182                  String h0 = uc.getHeaderField(0);
 183                  if (h0 != null) {
 184                      int i = h0.indexOf(' ');
 185                      int j = h0.indexOf(' ', i + 1);
 186                      if (i != -1 && j != -1) {
 187                          responsemessage = h0.substring(j + 1);
 188                      }
 189                  }
 190             }
 191             if ( rc >= 200 && rc < 300 ) {
 192                 responseBody = bodyToString( uc.getInputStream() );
 193                 logger.info( "responseBody=" + responseBody );
 194             } else {
 195                         logger.warn( "Unsuccessful response: " + responsemessage );
 196             }
 197
 198                 } catch (Exception e) {
 199             logger.error("Unable to read response  ");
 200             logger.error("Error", e);
 201         }
 202                 finally {
 203                         try {
 204                                 uc.disconnect();
 205                         } catch ( Exception e ) {
 206                                 logger.error("Error", e);
 207                         }
 208                 }
 209                 return rc;
 210
 211         }
 212
 213         public int delAaf(AafObject obj, String pURL) {
 214                 logger.info( "entry: delAaf() to  " + pURL  );
 215                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 216                 int rc = -1;
 217
 218
 219                 if ( ! makeConnection( pURL ) ) {
 220                         return rc;
 221                 };
 222
 223
 224                 byte[] postData = obj.getBytes();
 225                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 226                 String responsemessage = null;
 227                 String responseBody = null;
 228
 229                 try {
 230                         if (auth != null) {
 231                                 uc.setRequestProperty("Authorization", auth);
 232                 }
 233                         uc.setRequestMethod("DELETE");
 234                         uc.setRequestProperty("Content-Type", "application/json");
 235                         uc.setRequestProperty( "charset", "utf-8");
 236                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 237                         uc.setUseCaches(false);
 238                         uc.setDoOutput(true);
 239                         OutputStream os = null;
 240
 241
 242                         try {
 243                  uc.connect();
 244                  os = uc.getOutputStream();
 245                  os.write( postData );
 246
 247             } catch (ProtocolException pe) {
 248                 logger.error("Error", pe);
 249                  // Rcvd error instead of 100-Continue
 250                  try {
 251                      // work around glitch in Java 1.7.0.21 and likely others
 252                      // without this, Java will connect multiple times to the server to run the same request
 253                      uc.setDoOutput(false);
 254                  } catch (Exception e) {
 255                          logger.error("Error", e);
 256                  }
 257             } catch ( SSLHandshakeException she ) {
 258                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR +"For:- "+pURL,she);
 259             }
 260                         try {
 261                                 rc = uc.getResponseCode();
 262                         } catch ( SSLHandshakeException she ) {
 263                                 logger.error("Error", she);
 264                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 265                 rc = 500;
 266                 return rc;
 267             }
 268                         logger.info( "http response code:" + rc );
 269             responsemessage = uc.getResponseMessage();
 270             logger.info( "responsemessage=" + responsemessage );
 271
 272             if (responsemessage == null) {
 273                  // work around for glitch in Java 1.7.0.21 and likely others
 274                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 275                  String h0 = uc.getHeaderField(0);
 276                  if (h0 != null) {
 277                      int i = h0.indexOf(' ');
 278                      int j = h0.indexOf(' ', i + 1);
 279                      if (i != -1 && j != -1) {
 280                          responsemessage = h0.substring(j + 1);
 281                      }
 282                  }
 283             }
 284             if ( rc >= 200 && rc < 300 ) {
 285                 responseBody = bodyToString( uc.getInputStream() );
 286                 logger.info( "responseBody=" + responseBody );
 287             } else {
 288                         logger.warn( "Unsuccessful response: " + responsemessage );
 289             }
 290
 291                 } catch (Exception e) {
 292             logger.error("Unable to read response  ");
 293             logger.error("Error", e);
 294         }
 295                 return rc;
 296
 297         }
 298
 299
 300 }