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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.
*
*/
#include "Connection.h"
#include "Cluster.h"
#include "qpid/framing/AMQFrame.h"
#include "qpid/framing/ClusterConnectionDeliverCloseBody.h"
#include "qpid/log/Statement.h"
#include "qpid/framing/AllInvoker.h"
#include <boost/current_function.hpp>
namespace qpid {
namespace cluster {
using namespace framing;
Connection::Connection(Cluster& c, sys::ConnectionOutputHandler& out,
const std::string& wrappedId, ConnectionId myId)
: cluster(c), self(myId), output(*this, out),
connection(&output, cluster.getBroker(), wrappedId), catchUp(), exCatchUp()
{}
Connection::Connection(Cluster& c, sys::ConnectionOutputHandler& out,
const std::string& wrappedId, MemberId myId, bool isCatchUp)
: cluster(c), self(myId, this), output(*this, out),
connection(&output, cluster.getBroker(), wrappedId),
catchUp(isCatchUp), exCatchUp()
{}
Connection::~Connection() {}
bool Connection::doOutput() {
return output.doOutput();
}
// Delivery of doOutput allows us to run the real connection doOutput()
// which stocks up the write buffers with data.
//
void Connection::deliverDoOutput(uint32_t requested) {
assert(!catchUp);
output.deliverDoOutput(requested);
}
void Connection::received(framing::AMQFrame& f) {
// Handle connection controls, deliver other frames to connection.
if (!framing::invoke(*this, *f.getBody()).wasHandled())
connection.received(f);
}
void Connection::closed() {
try {
// Local network connection has closed. We need to keep the
// connection around but replace the output handler with a
// no-op handler as the network output handler will be
// deleted.
// FIXME aconway 2008-09-18: output handler reset in right place?
// connection.setOutputHandler(&discardHandler);
output.setOutputHandler(discardHandler);
if (catchUp) {
// This was a catch-up connection, may be promoted to a
// shadow connection.
catchUp = false;
exCatchUp = true;
cluster.insert(boost::intrusive_ptr<Connection>(this));
}
else {
// This was a local replicated connection. Multicast a deliver closed
// and process any outstanding frames from the cluster until
// self-delivery of deliver-closed.
cluster.mcastControl(ClusterConnectionDeliverCloseBody(), this);
++mcastSeq;
}
}
catch (const std::exception& e) {
QPID_LOG(error, QPID_MSG("While closing connection: " << e.what()));
}
}
void Connection::deliverClose () {
assert(!catchUp);
connection.closed();
cluster.erase(self);
}
size_t Connection::decode(const char* buffer, size_t size) {
assert(!catchUp);
++mcastSeq;
cluster.mcastBuffer(buffer, size, self);
return size;
}
void Connection::deliverBuffer(Buffer& buf) {
assert(!catchUp);
++deliverSeq;
while (decoder.decode(buf))
received(decoder.frame);
}
void Connection::sessionState(const SequenceNumber& /*replayStart*/,
const SequenceSet& /*sentIncomplete*/,
const SequenceNumber& /*expected*/,
const SequenceNumber& /*received*/,
const SequenceSet& /*unknownCompleted*/,
const SequenceSet& /*receivedIncomplete*/)
{
// FIXME aconway 2008-09-10: TODO
}
void Connection::shadowReady(uint64_t /*memberId*/, uint64_t /*connectionId*/) {
// FIXME aconway 2008-09-10: TODO
}
void Connection::dumpComplete() {
// FIXME aconway 2008-09-18: use or remove.
}
bool Connection::isLocal() const { return self.first == cluster.getSelf() && self.second == this; }
}} // namespace qpid::cluster
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