src/main/java/org/onap/dmaap/dbcapi/client/MrProvConnection.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.client;
  22
  23 import java.io.BufferedReader;
  24 import java.io.IOException;
  25 import java.io.InputStream;
  26 import java.io.InputStreamReader;
  27 import java.io.OutputStream;
  28 import java.net.ConnectException;
  29 import java.net.HttpURLConnection;
  30 import java.net.ProtocolException;
  31 import java.net.URL;
  32 import java.net.UnknownHostException;
  33 import java.util.Arrays;
  34
  35 import javax.net.ssl.HttpsURLConnection;
  36
  37 import org.apache.commons.codec.binary.Base64;
  38 import org.apache.log4j.Logger;
  39 import org.onap.dmaap.dbcapi.aaf.AafDecrypt;
  40 import org.onap.dmaap.dbcapi.aaf.AafService;
  41 import org.onap.dmaap.dbcapi.aaf.DecryptionInterface;
  42 import org.onap.dmaap.dbcapi.aaf.AafService.ServiceType;
  43 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  44 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  45 import org.onap.dmaap.dbcapi.model.ApiError;
  46 import org.onap.dmaap.dbcapi.model.MR_Cluster;
  47 import org.onap.dmaap.dbcapi.model.Topic;
  48 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  49
  50 public class MrProvConnection extends BaseLoggingClass{
  51
  52         private String provURL;
  53
  54         private HttpURLConnection uc;
  55
  56
  57         private String topicMgrCred;
  58         private boolean useAAF;
  59         private String  user;
  60         private String  encPwd;
  61
  62         public MrProvConnection() {
  63                 String mechIdProperty = "aaf.TopicMgrUser";
  64                 String pwdProperty = "aaf.TopicMgrPassword";
  65                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  66                 user = p.getProperty( mechIdProperty, "noMechId@domain.netset.com" );
  67                 encPwd = p.getProperty( pwdProperty, "notSet" );
  68                 useAAF= "true".equalsIgnoreCase(p.getProperty("UseAAF", "false"));
  69                 topicMgrCred =  getCred();
  70
  71         }
  72
  73         private String getCred( ) {
  74
  75
  76                 String pwd = "";
  77                 AafDecrypt decryptor = new AafDecrypt();
  78                 pwd = decryptor.decrypt(encPwd);
  79                 return user + ":" + pwd;
  80         }
  81
  82
  83         public boolean makeTopicConnection( MR_Cluster cluster ) {
  84                 logger.info( "connect to cluster: " + cluster.getDcaeLocationName());
  85
  86
  87                 provURL = cluster.getTopicProtocol() + "://" + cluster.getFqdn() + ":" + cluster.getTopicPort() + "/topics/create";
  88
  89                 if ( cluster.getTopicProtocol().equals( "https" ) ) {
  90                         return makeSecureConnection( provURL );
  91                 }
  92                 return makeConnection( provURL );
  93         }
  94
  95         private boolean makeSecureConnection( String pURL ) {
  96                 logger.info( "makeConnection to " + pURL );
  97
  98                 try {
  99                         URL u = new URL( pURL );
 100                         uc = (HttpsURLConnection) u.openConnection();
 101                         uc.setInstanceFollowRedirects(false);
 102                         logger.info( "open connect to " + pURL );
 103                         return(true);
 104                 } catch( UnknownHostException uhe ){
 105                 logger.error( "Caught UnknownHostException for " + pURL);
 106                 return(false);
 107         } catch (Exception e) {
 108             logger.error("Unexpected error during openConnection of " + pURL );
 109             e.printStackTrace();
 110             return(false);
 111         }
 112
 113         }
 114         private boolean makeConnection( String pURL ) {
 115                 logger.info( "makeConnection to " + pURL );
 116
 117                 try {
 118                         URL u = new URL( pURL );
 119                         uc = (HttpURLConnection) u.openConnection();
 120                         uc.setInstanceFollowRedirects(false);
 121                         logger.info( "open connect to " + pURL );
 122                         return(true);
 123                 } catch( UnknownHostException uhe ){
 124                 logger.error( "Caught UnknownHostException for " + pURL);
 125                 return(false);
 126         } catch (Exception e) {
 127             logger.error("Unexpected error during openConnection of " + pURL );
 128             e.printStackTrace();
 129             return(false);
 130         }
 131
 132         }
 133
 134         static String bodyToString( InputStream is ) {
 135                 StringBuilder sb = new StringBuilder();
 136                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
 137                 String line;
 138                 try {
 139                         while ((line = br.readLine()) != null ) {
 140                                 sb.append( line );
 141                         }
 142                 } catch (IOException ex ) {
 143                         errorLogger.error( "IOexception:" + ex);
 144                 }
 145
 146                 return sb.toString();
 147         }
 148
 149         public String doPostTopic( Topic postTopic, ApiError err ) {
 150                 String auth =  "Basic " + Base64.encodeBase64String(topicMgrCred.getBytes());
 151
 152
 153                 String responsemessage = null;
 154                 int rc = -1;
 155
 156
 157                 try {
 158                         byte[] postData = postTopic.getBytes();
 159                         logger.info( "post fields=" + Arrays.toString(postData));
 160
 161                         // when not using AAF, do not attempt Basic Authentication
 162                         if ( useAAF ) {
 163                                 uc.setRequestProperty("Authorization", auth);
 164                                 logger.info( "Authenticating with " + auth );
 165                         }
 166                         uc.setRequestMethod("POST");
 167                         uc.setRequestProperty("Content-Type", "application/json");
 168                         uc.setRequestProperty( "charset", "utf-8");
 169                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 170                         uc.setUseCaches(false);
 171                         uc.setDoOutput(true);
 172                         OutputStream os = null;
 173
 174
 175                         try {
 176                  uc.connect();
 177                  os = uc.getOutputStream();
 178                  os.write( postData );
 179
 180             } catch (ProtocolException pe) {
 181                  // Rcvd error instead of 100-Continue
 182                  try {
 183                      // work around glitch in Java 1.7.0.21 and likely others
 184                      // without this, Java will connect multiple times to the server to run the same request
 185                      uc.setDoOutput(false);
 186                  } catch (Exception e) {
 187                  }
 188             } catch ( UnknownHostException uhe ) {
 189                 errorLogger.error( DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION , "Unknown Host Exception" , provURL );
 190                 err.setCode(500);
 191                 err.setMessage("Unknown Host Exception");
 192                 err.setFields( uc.getURL().getHost());
 193                 return new String( "500: " + uhe.getMessage());
 194             }catch ( ConnectException ce ) {
 195                 errorLogger.error( DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION, provURL, "HTTP Connection Exception"  );
 196                 err.setCode(500);
 197                 err.setMessage("HTTP Connection Exception");
 198                 err.setFields( uc.getURL().getHost());
 199                 return new String( "500: " + ce.getMessage());
 200             }
 201                         rc = uc.getResponseCode();
 202                         logger.info( "http response code:" + rc );
 203                         err.setCode(rc);
 204             responsemessage = uc.getResponseMessage();
 205             logger.info( "responsemessage=" + responsemessage );
 206             err.setMessage(responsemessage);
 207
 208
 209             if (responsemessage == null) {
 210                  // work around for glitch in Java 1.7.0.21 and likely others
 211                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 212                  String h0 = uc.getHeaderField(0);
 213                  if (h0 != null) {
 214                      int i = h0.indexOf(' ');
 215                      int j = h0.indexOf(' ', i + 1);
 216                      if (i != -1 && j != -1) {
 217                          responsemessage = h0.substring(j + 1);
 218                      }
 219                  }
 220             }
 221             if (rc >= 200 && rc < 300 ) {
 222                         String responseBody = null;
 223                         responseBody = bodyToString( uc.getInputStream() );
 224                         logger.info( "responseBody=" + responseBody );
 225                         return responseBody;
 226
 227             }
 228
 229                 } catch (Exception e) {
 230             System.err.println("Unable to read response  " );
 231             e.printStackTrace();
 232         }
 233                 finally {
 234                         try {
 235                                 uc.disconnect();
 236                         } catch ( Exception e ) {}
 237                 }
 238                 return new String( rc +": " + responsemessage );
 239
 240         }
 241
 242
 243
 244
 245 }