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