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