/**
* Copyright (c) 2012, University of Konstanz, Distributed Systems Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the University of Konstanz nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jscsi.initiator.connection.state;
import org.jscsi.exception.InternetSCSIException;
import org.jscsi.initiator.connection.Connection;
import org.jscsi.parser.OperationCode;
import org.jscsi.parser.ProtocolDataUnit;
import org.jscsi.parser.datasegment.DataSegmentFactory;
import org.jscsi.parser.datasegment.DataSegmentFactory.DataSegmentFormat;
import org.jscsi.parser.datasegment.IDataSegment;
import org.jscsi.parser.datasegment.IDataSegmentIterator;
import org.jscsi.parser.datasegment.IDataSegmentIterator.IDataSegmentChunk;
import org.jscsi.parser.datasegment.OperationalTextKey;
import org.jscsi.parser.datasegment.SettingsMap;
import org.jscsi.parser.text.TextRequestParser;
/**
* <h1>GetConnectionsRequestState</h1>
* <p/>
* This state requests a list of all possible connections to a specific target. So it sends a TextRequest PDU
* with <code>SendTargets=</code> as the only <code>OperationalTextKey</code> as data segment.
*
* @author Volker Wildi
*/
public final class GetConnectionsRequestState extends AbstractState {
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
/**
* Constructor to create a <code>GetConnectionsRequestState</code> instance,
* which uses the given connection for transmission.
*
* @param initConnection
* The context connection, which is used for the network
* transmission.
*/
public GetConnectionsRequestState(final Connection initConnection, final int initInitiatorTaskTag) {
//OODRIVE
super(initConnection, initInitiatorTaskTag);
}
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
/** {@inheritDoc} */
public final void execute() throws InternetSCSIException {
final ProtocolDataUnit protocolDataUnit =
protocolDataUnitFactory.create(false, true, OperationCode.TEXT_REQUEST, connection
.getSetting(OperationalTextKey.HEADER_DIGEST), connection
.getSetting(OperationalTextKey.DATA_DIGEST));
//OODRIVE
protocolDataUnit.getBasicHeaderSegment().setInitiatorTaskTag(initiatorTaskTag);
final TextRequestParser parser =
(TextRequestParser)protocolDataUnit.getBasicHeaderSegment().getParser();
final SettingsMap settings = new SettingsMap();
settings.add(OperationalTextKey.SEND_TARGETS, "");
final IDataSegment dataSegment =
DataSegmentFactory.create(settings.asByteBuffer(), DataSegmentFormat.TEXT, connection
.getSettingAsInt(OperationalTextKey.MAX_RECV_DATA_SEGMENT_LENGTH));
int bytes2Process = dataSegment.getLength();
for (IDataSegmentIterator dataSegmentIterator = dataSegment.iterator(); dataSegmentIterator.hasNext();) {
IDataSegmentChunk dataSegmentChunk = dataSegmentIterator.next(bytes2Process);
protocolDataUnit.setDataSegment(dataSegmentChunk);
parser.setTargetTransferTag(0xFFFFFFFF);
}
connection.send(protocolDataUnit);
//OODRIVE
connection.nextState(new GetConnectionsResponseState(connection,initiatorTaskTag), initiatorTaskTag);
super.stateFollowing = true;
// return true;
}
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
// --------------------------------------------------------------------------
}