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/*
* This file is part of rasdaman community.
*
* Rasdaman community is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
*/
/*************************************************************
* <pre>
*
* PURPOSE:
*
*
* COMMENTS:
*
* </pre>
*********************************************************** */
package rasj.rnp;
import rasj.*;
import rasj.global.*;
import java.io.*;
import java.net.*;
public class RnpBaseClientComm
{
RnpEncoder encoder;
RnpDecoder decoder;
int serverID;
String rasServerHost;
int rasServerPort;
public RnpBaseClientComm(int serverType)
{
Debug.enterVerbose( "RnpBaseClientComm.RnpBaseClientComm: start. serverType=" + serverType );
encoder = new RnpEncoder();
serverID = serverType;
Debug.leaveVerbose( "RnpBaseClientComm.RnpBaseClientComm: done." );
}
public void setConnectionParameters(String s, int p)
{
Debug.enterVerbose( "RnpBaseClientComm.setConnectionParameters: start. server=" + s + ", port=" + p );
rasServerHost = s;
rasServerPort = p;
Debug.leaveVerbose( "RnpBaseClientComm.setConnectionParameters: done." );
}
public void startRequest(int commandCode)
{
Debug.enterVerbose( "RnpBaseClientComm.startRequest: start. cmdCode=" + commandCode );
encoder.startMessage(serverID);
encoder.startFragment(Rnp.fgt_Command,commandCode);
Debug.leaveVerbose( "RnpBaseClientComm.startRequest: done." );
}
public void startMessage()
{
Debug.enterVerbose( "RnpBaseClientComm.startMessage: start." );
encoder.startMessage(serverID);
Debug.leaveVerbose( "RnpBaseClientComm.startMessage: done." );
}
public void startFragment(int commandCode)
{
Debug.enterVerbose( "RnpBaseClientComm.startFragment: start. cmdCode=" + commandCode );
encoder.startFragment(Rnp.fgt_Command,commandCode);
Debug.leaveVerbose( "RnpBaseClientComm.startFragment: done." );
}
public void endFragment()
{
Debug.enterVerbose( "RnpBaseClientComm.endFragment: start." );
encoder.endFragment();
Debug.leaveVerbose( "RnpBaseClientComm.endFragment: done." );
}
public void endMessage()
{
Debug.enterVerbose( "RnpBaseClientComm.endMessage: start." );
encoder.endMessage();
Debug.leaveVerbose( "RnpBaseClientComm.endMessage: done." );
}
public void turboSendRequestGetAnswer()
{
Debug.enterVerbose( "RnpBaseClientComm.turboSendRequestGetAnswer: start." );
RnpMessage answer=communicate(rasServerHost,rasServerPort,encoder.message);
decoder = new RnpDecoder(answer);
Debug.leaveVerbose( "RnpBaseClientComm.turboSendRequestGetAnswer: done." );
}
public void sendRequestGetAnswer()
{
Debug.enterVerbose( "RnpBaseClientComm.sendRequestGetAnswer: start." );
encoder.endFragment();
encoder.endMessage();
RnpMessage answer=communicate(rasServerHost,rasServerPort,encoder.message);
decoder = new RnpDecoder(answer);
decoder.getFirstFragment();
Debug.leaveVerbose( "RnpBaseClientComm.sendRequestGetAnswer: done." );
}
public void checkForError() throws RasQueryExecutionFailedException
{
Debug.enterVerbose( "RnpBaseClientComm.checkForError: start." );
if(decoder.getFragmentType() != Rnp.fgt_Error)
{
Debug.leaveVerbose( "RnpBaseClientComm.checkForError: done." );
return;
}
decoder.getFirstParameter();// error type
int errorType = decoder.getParameterType();
if(errorType == 3) //"ert_Other"
{
decoder.getNextParameter();
String s = decoder.getDataAsString();
Debug.leaveCritical( "RnpBaseClientComm.checkForError: done. query failed: " + s );
throw new RasQueryExecutionFailedException(s);
}
else
{
Debug.leaveCritical( "RnpBaseClientComm.checkForError: done. query failed, unexpected error: " + errorType );
throw new RasQueryExecutionFailedException(1000,0,0,"");
}
// we never get here
}
public RnpMessage communicate(String server, int port, RnpMessage message)
{
Debug.enterVerbose( "RnpBaseClientComm.communicate: start. server=" + server + ", port=" + port );
Socket socket=null;
RnpMessage receivedMessage= null;
DataOutputStream dos = null;
try
{
Debug.talkVerbose( "RnpBaseClientComm.communicate: server=" + server + ", port=" + port );
socket=new Socket(server, port);
}
catch(UnknownHostException e11)
{
Debug.leaveCritical( "RnpBaseClientComm.communicate: error: socket target unknown: " + e11.getMessage() );
throw new RasConnectionFailedException(RasGlobalDefs.MANAGER_CONN_FAILED,server);
}
catch(IOException e12)
{
Debug.leaveCritical( "RnpBaseClientComm.communicate: error: socket io exception: " + e12.getMessage() );
throw new RasClientInternalException("RnpBaseClientComm","communicate()",e12.getMessage());
}
try
{
dos = new DataOutputStream(socket.getOutputStream());
message.write(dos);
}
catch(IOException e2)
{
Debug.leaveCritical( "RnpBaseClientComm.communicate: error: cannot write to socket: " + e2.getMessage() );
throw new RasClientInternalException("RnpBaseClientComm","communicate()",e2.getMessage());
}
try
{
DataInputStream dis = new DataInputStream(socket.getInputStream());
receivedMessage = new RnpMessage();
receivedMessage.read(dis);
//receivedMessage.print();
dos.close();
dis.close();
}
catch(IOException e3)
{
Debug.leaveCritical( "RnpBaseClientComm.communicate: error: rcv io exception: " + e3.getMessage() );
throw new RasClientInternalException("RnpBaseClientComm","communicate()", e3.getMessage() );
}
catch(RnpException e4)
{
Debug.leaveCritical( "RnpBaseClientComm.communicate: error: RnpException: " + e4.getMessage() );
throw new RasClientInternalException("RnpBaseClientComm","communicate()",e4.getMessage());
}
Debug.leaveVerbose( "RnpBaseClientComm.communicate: done. result=" + receivedMessage );
return receivedMessage;
}
} // RnpBaseClientComm
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