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  * Modifications Copyright (C) 2019 IBM.
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.dmaap.dbcapi.aaf;
  24
  25
  26
  27
  28
  29 import java.io.BufferedReader;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.io.InputStreamReader;
  33 import java.io.OutputStream;
  34 import java.net.ProtocolException;
  35 import java.net.URL;
  36 import java.net.UnknownHostException;
  37 import java.net.ConnectException;
  38
  39 import javax.net.ssl.HttpsURLConnection;
  40 import javax.net.ssl.SSLHandshakeException;
  41
  42 import org.apache.commons.codec.binary.Base64;
  43 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  44 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  45 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  46
  47
  48 public class AafConnection extends BaseLoggingClass {
  49
  50
  51
  52
  53
  54         private String aafCred;
  55         private String unit_test;
  56
  57
  58         private HttpsURLConnection uc;
  59
  60
  61         public AafConnection( String cred ) {
  62                 aafCred = cred;
  63                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  64         unit_test = p.getProperty( "UnitTest", "No" );
  65
  66         }
  67
  68
  69         private boolean makeConnection( String pURL ) {
  70
  71                 try {
  72                         URL u = new URL( pURL );
  73                         uc = (HttpsURLConnection) u.openConnection();
  74                         uc.setInstanceFollowRedirects(false);
  75                         logger.info( "successful connect to " + pURL );
  76                         return(true);
  77                 } catch ( UnknownHostException uhe ) {
  78                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
  79                 logger.error("Error", uhe);
  80             return(false);
  81                 } catch (Exception e) {
  82                         logger.error("Error", e);
  83                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_ERROR,  pURL, e.getMessage());
  84             return(false);
  85         }
  86
  87         }
  88
  89         static String bodyToString( InputStream is ) {
  90                 StringBuilder sb = new StringBuilder();
  91                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
  92                 String line;
  93                 try {
  94                         while ((line = br.readLine()) != null ) {
  95                                 sb.append( line );
  96                         }
  97                 } catch (IOException ex ) {
  98                         errorLogger.error( DmaapbcLogMessageEnum.IO_EXCEPTION + ex.getMessage(),ex);
  99                 }
 100
 101                 return sb.toString();
 102         }
 103
 104
 105
 106         public int postAaf( AafObject obj, String pURL ) {
 107                 logger.info( "entry: postAaf() to  " + pURL  );
 108                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 109                 int rc = -1;
 110
 111
 112                 if ( ! makeConnection( pURL ) ) {
 113                         return rc;
 114                 };
 115
 116
 117                 byte[] postData = obj.getBytes();
 118                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 119                 String responsemessage = null;
 120                 String responseBody = null;
 121
 122                 try {
 123                         if (auth != null) {
 124                                 uc.setRequestProperty("Authorization", auth);
 125                 }
 126                         uc.setRequestMethod("POST");
 127                         uc.setRequestProperty("Content-Type", "application/json");
 128                         uc.setRequestProperty( "charset", "utf-8");
 129                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 130                         uc.setUseCaches(false);
 131                         uc.setDoOutput(true);
 132                         OutputStream os = null;
 133
 134
 135                         try {
 136                  uc.connect();
 137                  os = uc.getOutputStream();
 138                  os.write( postData );
 139
 140             } catch (ProtocolException pe) {
 141                 logger.error("Error", pe);
 142                  // Rcvd error instead of 100-Continue
 143                  try {
 144                      // work around glitch in Java 1.7.0.21 and likely others
 145                      // without this, Java will connect multiple times to the server to run the same request
 146                      uc.setDoOutput(false);
 147                  } catch (Exception e) {
 148                          logger.error("Error", e);
 149                  }
 150             } catch ( SSLHandshakeException she ) {
 151                 logger.error("Error", she);
 152                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 153                         } catch ( UnknownHostException uhe ) {
 154                                 logger.error("Error", uhe);
 155                                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
 156                 rc = 500;
 157                 return rc;
 158             } catch ( ConnectException ce ) {
 159                 logger.error("Error", ce);
 160                                 if ( "Yes".equals(unit_test) ) {
 161                                         rc = 201;
 162                                         return rc;
 163                                 }
 164                                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION,  pURL, ce.getMessage() );
 165                 rc = 500;
 166                 return rc;
 167                         }
 168                         try {
 169                                 rc = uc.getResponseCode();
 170                         } catch ( SSLHandshakeException she ) {
 171                                 logger.error("Error", she);
 172                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 173                 rc = 500;
 174                 return rc;
 175             }
 176                         logger.info( "http response code:" + rc );
 177             responsemessage = uc.getResponseMessage();
 178             logger.info( "responsemessage=" + responsemessage );
 179
 180             if (responsemessage == null) {
 181                  // work around for glitch in Java 1.7.0.21 and likely others
 182                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 183                  String h0 = uc.getHeaderField(0);
 184                  if (h0 != null) {
 185                      int i = h0.indexOf(' ');
 186                      int j = h0.indexOf(' ', i + 1);
 187                      if (i != -1 && j != -1) {
 188                          responsemessage = h0.substring(j + 1);
 189                      }
 190                  }
 191             }
 192             if ( rc >= 200 && rc < 300 ) {
 193                 responseBody = bodyToString( uc.getInputStream() );
 194                 logger.info( "responseBody=" + responseBody );
 195             } else {
 196                         logger.warn( "Unsuccessful response: " + responsemessage );
 197             }
 198
 199                 } catch (Exception e) {
 200             logger.error("Unable to read response  ");
 201             logger.error("Error", e);
 202         }
 203                 finally {
 204                         try {
 205                                 uc.disconnect();
 206                         } catch ( Exception e ) {
 207                                 logger.error("Error", e);
 208                         }
 209                 }
 210                 return rc;
 211
 212         }
 213
 214         public int delAaf(AafObject obj, String pURL) {
 215                 logger.info( "entry: delAaf() to  " + pURL  );
 216                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 217                 int rc = -1;
 218
 219
 220                 if ( ! makeConnection( pURL ) ) {
 221                         return rc;
 222                 };
 223
 224
 225                 byte[] postData = obj.getBytes();
 226                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 227                 String responsemessage = null;
 228                 String responseBody = null;
 229
 230                 try {
 231                         if (auth != null) {
 232                                 uc.setRequestProperty("Authorization", auth);
 233                 }
 234                         uc.setRequestMethod("DELETE");
 235                         uc.setRequestProperty("Content-Type", "application/json");
 236                         uc.setRequestProperty( "charset", "utf-8");
 237                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 238                         uc.setUseCaches(false);
 239                         uc.setDoOutput(true);
 240                         OutputStream os = null;
 241
 242
 243                         try {
 244                  uc.connect();
 245                  os = uc.getOutputStream();
 246                  os.write( postData );
 247
 248             } catch (ProtocolException pe) {
 249                 logger.error("Error", pe);
 250                  // Rcvd error instead of 100-Continue
 251                  try {
 252                      // work around glitch in Java 1.7.0.21 and likely others
 253                      // without this, Java will connect multiple times to the server to run the same request
 254                      uc.setDoOutput(false);
 255                  } catch (Exception e) {
 256                          logger.error("Error", e);
 257                  }
 258             } catch ( SSLHandshakeException she ) {
 259                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR +"For:- "+pURL,she);
 260             }
 261                         try {
 262                                 rc = uc.getResponseCode();
 263                         } catch ( SSLHandshakeException she ) {
 264                                 logger.error("Error", she);
 265                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 266                 rc = 500;
 267                 return rc;
 268             }
 269                         logger.info( "http response code:" + rc );
 270             responsemessage = uc.getResponseMessage();
 271             logger.info( "responsemessage=" + responsemessage );
 272
 273             if (responsemessage == null) {
 274                  // work around for glitch in Java 1.7.0.21 and likely others
 275                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 276                  String h0 = uc.getHeaderField(0);
 277                  if (h0 != null) {
 278                      int i = h0.indexOf(' ');
 279                      int j = h0.indexOf(' ', i + 1);
 280                      if (i != -1 && j != -1) {
 281                          responsemessage = h0.substring(j + 1);
 282                      }
 283                  }
 284             }
 285             if ( rc >= 200 && rc < 300 ) {
 286                 responseBody = bodyToString( uc.getInputStream() );
 287                 logger.info( "responseBody=" + responseBody );
 288             } else {
 289                         logger.warn( "Unsuccessful response: " + responsemessage );
 290             }
 291
 292                 } catch (Exception e) {
 293             logger.error("Unable to read response  ");
 294             logger.error("Error", e);
 295         }
 296                 return rc;
 297
 298         }
 299
 300
 301 }