src/main/java/org/onap/dmaap/dmf/mr/resources/streamReaders/CambriaRawStreamReader.java

   1 /*******************************************************************************
   2  *  ============LICENSE_START=======================================================
   3  *  org.onap.dmaap
   4  *  ================================================================================
   5  *  Copyright © 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  *        http://www.apache.org/licenses/LICENSE-2.0
  11 *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  *  ============LICENSE_END=========================================================
  18  *
  19  *  ECOMP is a trademark and service mark of AT&T Intellectual Property.
  20  *
  21  *******************************************************************************/
  22 package org.onap.dmaap.dmf.mr.resources.streamReaders;
  23
  24 import java.io.IOException;
  25 import java.io.InputStream;
  26
  27 import javax.servlet.http.HttpServletResponse;
  28
  29 import org.onap.dmaap.dmf.mr.CambriaApiException;
  30 import org.onap.dmaap.dmf.mr.backends.Publisher.message;
  31 import org.onap.dmaap.dmf.mr.beans.LogDetails;
  32 import org.onap.dmaap.dmf.mr.resources.CambriaEventSet.reader;
  33 import com.att.nsa.util.StreamTools;
  34
  35 /**
  36  *
  37  * This stream reader reads raw bytes creating a single message.
  38  * @author peter
  39  *
  40  */
  41 public class CambriaRawStreamReader implements reader
  42 {
  43         /**
  44          * This is the constructor of CambriaRawStreamReader, it will basically the read from Input stream
  45          * @param is
  46          * @param defPart
  47          * @throws CambriaApiException
  48          */
  49         public CambriaRawStreamReader ( InputStream is, String defPart ) throws CambriaApiException
  50         {
  51                 fStream = is;
  52                 fDefPart = defPart;
  53                 fClosed = false;
  54         }
  55
  56         @Override
  57         /**
  58          *
  59          * next() method reads the bytes and
  60          * iterates through the messages
  61          * @throws CambriaApiException
  62          *
  63          */
  64         public message next () throws CambriaApiException
  65         {
  66                 if ( fClosed ) return null;
  67
  68                 try
  69                 {
  70                         final byte[] rawBytes = StreamTools.readBytes ( fStream );
  71                         fClosed = true;
  72                         return new message ()
  73                         {
  74                                 private LogDetails logDetails;
  75                                 private boolean transactionEnabled;
  76
  77                                 /**
  78                                  * returns boolean value which
  79                                  * indicates whether transaction is enabled
  80                                  */
  81                                 public boolean isTransactionEnabled() {
  82                                         return transactionEnabled;
  83                                 }
  84
  85                                 /**
  86                                  * sets boolean value which
  87                                  * indicates whether transaction is enabled
  88                                  */
  89                                 public void setTransactionEnabled(boolean transactionEnabled) {
  90                                         this.transactionEnabled = transactionEnabled;
  91                                 }
  92
  93                                 @Override
  94                                 /**
  95                                  * @returns key
  96                                  * It ch4ecks whether fDefPart value is Null.
  97                                  * If yes, it will return ystem.currentTimeMillis () else
  98                                  * it will return fDefPart variable value
  99                                  */
 100                                 public String getKey ()
 101                                 {
 102                                         return fDefPart == null ? "" + System.currentTimeMillis () : fDefPart;
 103                                 }
 104
 105                                 @Override
 106                                 /**
 107                                  * returns the message in String type object
 108                                  */
 109                                 public String getMessage ()
 110                                 {
 111                                         return new String ( rawBytes );
 112                                 }
 113
 114                                 /**
 115                                  * set log details in logDetails variable
 116                                  */
 117                                 @Override
 118                                 public void setLogDetails(LogDetails logDetails) {
 119                                         this.logDetails = logDetails;
 120                                 }
 121
 122                                 @Override
 123                                 /**
 124                                  * get the log details
 125                                  */
 126                                 public LogDetails getLogDetails() {
 127                                         return this.logDetails;
 128                                 }
 129                         };
 130                 }
 131                 catch ( IOException e )
 132                 {
 133                         throw new CambriaApiException ( HttpServletResponse.SC_BAD_REQUEST, e.getMessage () );
 134                 }
 135         }
 136
 137         private final InputStream fStream;
 138         private final String fDefPart;
 139         private boolean fClosed;
 140
 141 }