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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.transport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* SessionDelegate
*
* @author Rafael H. Schloming
*/
public class SessionDelegate
extends MethodDelegate
implements ProtocolDelegate
{
private static final Logger LOGGER = LoggerFactory.getLogger(SessionDelegate.class);
public void init(Session ssn, ProtocolHeader hdr)
{
LOGGER.warn("INIT: [{}] {}", ssn, hdr);
}
public void control(Session ssn, Method method)
{
method.dispatch(ssn, this);
}
public void command(Session ssn, Method method)
{
command(ssn, method, !method.hasPayload());
}
public void command(Session ssn, Method method, boolean processed)
{
ssn.identify(method);
method.dispatch(ssn, this);
if (processed)
{
ssn.processed(method);
}
}
public void error(Session ssn, ProtocolError error)
{
LOGGER.warn("ERROR: [{}] {}", ssn, error);
}
public void handle(Session ssn, Method method)
{
LOGGER.warn("UNHANDLED: [{}] {}", ssn, method);
}
@Override public void sessionRequestTimeout(Session ssn, SessionRequestTimeout t)
{
if (t.getTimeout() == 0)
{
ssn.setClose(true);
}
ssn.sessionTimeout(0); // Always report back an expiry of 0 until it is implemented
}
@Override public void sessionAttached(Session ssn, SessionAttached atc)
{
ssn.setState(Session.State.OPEN);
synchronized (ssn.getStateLock())
{
ssn.getStateLock().notifyAll();
}
}
@Override public void sessionTimeout(Session ssn, SessionTimeout t)
{
// Setting of expiry is not implemented
}
@Override public void sessionCompleted(Session ssn, SessionCompleted cmp)
{
RangeSet ranges = cmp.getCommands();
RangeSet known = null;
if (ranges != null)
{
if(ranges.size() == 1)
{
Range range = ranges.getFirst();
boolean advanced = ssn.complete(range.getLower(), range.getUpper());
if(advanced && cmp.getTimelyReply())
{
known = range;
}
}
else
{
if (cmp.getTimelyReply())
{
known = RangeSetFactory.createRangeSet();
}
for (Range range : ranges)
{
boolean advanced = ssn.complete(range.getLower(), range.getUpper());
if (advanced && known != null)
{
known.add(range);
}
}
}
}
else if (cmp.getTimelyReply())
{
known = RangeSetFactory.createRangeSet();
}
if (known != null)
{
ssn.sessionKnownCompleted(known);
}
}
@Override public void sessionKnownCompleted(Session ssn, SessionKnownCompleted kcmp)
{
RangeSet kc = kcmp.getCommands();
if (kc != null)
{
ssn.knownComplete(kc);
}
}
@Override public void sessionFlush(Session ssn, SessionFlush flush)
{
if (flush.getCompleted())
{
ssn.flushProcessed();
}
if (flush.getConfirmed())
{
ssn.flushProcessed();
}
if (flush.getExpected())
{
ssn.flushExpected();
}
}
@Override public void sessionCommandPoint(Session ssn, SessionCommandPoint scp)
{
ssn.commandPoint(scp.getCommandId());
}
@Override public void executionSync(Session ssn, ExecutionSync sync)
{
ssn.syncPoint();
}
@Override public void executionResult(Session ssn, ExecutionResult result)
{
ssn.result(result.getCommandId(), result.getValue());
}
@Override public void executionException(Session ssn, ExecutionException exc)
{
ssn.setException(exc);
ssn.getSessionListener().exception(ssn, new SessionException(exc));
ssn.closed();
}
@Override public void messageTransfer(Session ssn, MessageTransfer xfr)
{
ssn.getSessionListener().message(ssn, xfr);
}
@Override public void messageSetFlowMode(Session ssn, MessageSetFlowMode sfm)
{
if ("".equals(sfm.getDestination()) &&
MessageFlowMode.CREDIT.equals(sfm.getFlowMode()))
{
ssn.setFlowControl(true);
}
else
{
super.messageSetFlowMode(ssn, sfm);
}
}
@Override public void messageFlow(Session ssn, MessageFlow flow)
{
if ("".equals(flow.getDestination()) &&
MessageCreditUnit.MESSAGE.equals(flow.getUnit()))
{
ssn.addCredit((int) flow.getValue());
}
else
{
super.messageFlow(ssn, flow);
}
}
@Override public void messageStop(Session ssn, MessageStop stop)
{
if ("".equals(stop.getDestination()))
{
ssn.drainCredit();
}
else
{
super.messageStop(ssn, stop);
}
}
public void closed(Session session)
{
LOGGER.debug("CLOSED: [{}]", session);
synchronized (session.getStateLock())
{
session.getStateLock().notifyAll();
}
}
public void detached(Session session)
{
LOGGER.debug("DETACHED: [{}]", session);
synchronized (session.getStateLock())
{
session.getStateLock().notifyAll();
}
}
}
