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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 "Interconnect.h"
#include "Interconnects.h"
#include "Connection.h"
#include "SaslClient.h"
#include "Session.h"
#include "qpid/broker/Broker.h"
#include "qpid/Exception.h"
#include "qpid/SaslFactory.h"
#include "qpid/sys/ConnectionCodec.h"
#include "qpid/sys/OutputControl.h"
#include "qpid/sys/SystemInfo.h"
#include "qpid/log/Statement.h"
#include <boost/shared_ptr.hpp>
extern "C" {
#include <proton/engine.h>
#include <proton/error.h>
}
namespace qpid {
namespace broker {
namespace amqp {
Interconnect::Interconnect(qpid::sys::OutputControl& out, const std::string& id, BrokerContext& broker, bool saslInUse,
bool i, const std::string& n, const std::string& s, const std::string& t, const std::string& d)
: Connection(out, id, broker, true, true), incoming(i), name(n), source(s), target(t), domain(d), headerDiscarded(saslInUse),
isOpened(false), closeRequested(false), isTransportDeleted(false)
{}
Interconnect::~Interconnect()
{
QPID_LOG(notice, "Interconnect deleted");
}
namespace {
const pn_state_t UNINIT = PN_LOCAL_UNINIT | PN_REMOTE_UNINIT;
const size_t PROTOCOL_HEADER_LENGTH(8);
}
size_t Interconnect::encode(char* buffer, size_t size)
{
if (headerDiscarded) {
return Connection::encode(buffer, size);
} else {
//The IO 'layer' will write in a protocol header when an
//'outgoing' connection is established. However the proton
//protocol engine will also emit one. One needs to be
//discarded, here we discard the one the engine emits for
//interconnects.
headerDiscarded = true;
size_t encoded = Connection::encode(buffer, size);
assert(encoded >= PROTOCOL_HEADER_LENGTH);//we never encode part of protocol header
//discard first eight bytes
::memmove(buffer, buffer + PROTOCOL_HEADER_LENGTH, encoded - PROTOCOL_HEADER_LENGTH);
return encoded - PROTOCOL_HEADER_LENGTH;
}
}
namespace {
const std::string CLIENT_PROCESS_NAME("qpid.client_process");
const std::string CLIENT_PID("qpid.client_pid");
pn_bytes_t convert(const std::string& s)
{
pn_bytes_t result;
result.start = const_cast<char*>(s.data());
result.size = s.size();
return result;
}
void setProperties(pn_connection_t* connection)
{
pn_data_t* data = pn_connection_properties(connection);
pn_data_put_map(data);
pn_data_enter(data);
pn_data_put_symbol(data, convert(CLIENT_PROCESS_NAME));
std::string processName = sys::SystemInfo::getProcessName();
pn_data_put_string(data, convert(processName));
pn_data_put_symbol(data, convert(CLIENT_PID));
pn_data_put_int(data, sys::SystemInfo::getProcessId());
pn_data_exit(data);
}
}
void Interconnect::process()
{
QPID_LOG(trace, id << " processing interconnect");
if (closeRequested) {
close();
} else {
if ((pn_connection_state(connection) & UNINIT) == UNINIT) {
QPID_LOG_CAT(debug, model, id << " interconnect open initiated");
pn_connection_set_container(connection, getBroker().getFederationTag().c_str());
setProperties(connection);
pn_connection_open(connection);
out.connectionEstablished();
setInterconnectDomain(domain);
}
if (!isOpened && (pn_connection_state(connection) & PN_REMOTE_ACTIVE)) {
QPID_LOG_CAT(debug, model, id << " interconnect open completed, attaching link");
isOpened = true;
readPeerProperties();
const char* containerid(pn_connection_remote_container(connection));
if (containerid) {
setContainerId(std::string(containerid));
}
opened();
getBroker().getConnectionObservers().opened(*this);
pn_session_t* s = pn_session(connection);
pn_session_open(s);
boost::shared_ptr<Session> ssn(new Session(s, *this, out));
sessions[s] = ssn;
pn_link_t* l = incoming ? pn_receiver(s, name.c_str()) : pn_sender(s, name.c_str());
pn_link_open(l);
ssn->attach(l, source, target, relay);
}
Connection::process();
}
}
void Interconnect::setRelay(boost::shared_ptr<Relay> r)
{
relay = r;
}
void Interconnect::deletedFromRegistry()
{
closeRequested = true;
if (!isTransportDeleted) out.activateOutput();
}
void Interconnect::transportDeleted()
{
isTransportDeleted = true;
getInterconnects().remove(name);
}
bool Interconnect::isLink() const
{
return true;
}
}}} // namespace qpid::broker::amqp
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