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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 "ConnectionObserver.h"
#include "BrokerInfo.h"
#include "HaBroker.h"
#include "qpid/Url.h"
#include "qpid/types/Variant.h"
#include "qpid/broker/Connection.h"
#include "qpid/log/Statement.h"
namespace qpid {
namespace ha {
ConnectionObserver::ConnectionObserver(HaBroker& hb, const types::Uuid& uuid)
: haBroker(hb), logPrefix(hb.logPrefix), self(uuid) {}
bool ConnectionObserver::getBrokerInfo(const broker::Connection& connection, BrokerInfo& info) {
qpid::types::Variant::Map::const_iterator i = connection.getClientProperties().find(ConnectionObserver::BACKUP_TAG);
if (i != connection.getClientProperties().end() && i->second.getType() == qpid::types::VAR_MAP) {
info = BrokerInfo(i->second.asMap());
return true;
}
return false;
}
bool ConnectionObserver::getAddress(const broker::Connection& connection, Address& addr) {
qpid::types::Variant::Map::const_iterator i = connection.getClientProperties().find(ConnectionObserver::ADDRESS_TAG);
if (i != connection.getClientProperties().end()) {
Url url;
url.parseNoThrow(i->second.asString().c_str());
if (!url.empty()) {
addr = url[0];
return true;
}
}
return false;
}
void ConnectionObserver::setObserver(const ObserverPtr& o)
{
sys::Mutex::ScopedLock l(lock);
observer = o;
}
ConnectionObserver::ObserverPtr ConnectionObserver::getObserver() {
sys::Mutex::ScopedLock l(lock);
return observer;
}
void ConnectionObserver::reset() {
sys::Mutex::ScopedLock l(lock);
observer.reset();
}
bool ConnectionObserver::isSelf(const broker::Connection& connection) {
BrokerInfo info;
return getBrokerInfo(connection, info) && info.getSystemId() == self;
}
void ConnectionObserver::opened(broker::Connection& connection) {
try {
if (isSelf(connection)) { // Reject self connections
// Set my own address if there is an address header.
Address addr;
if (getAddress(connection, addr)) haBroker.setAddress(addr);
QPID_LOG(trace, logPrefix << "Rejected self connection "+connection.getMgmtId());
connection.abort();
return;
}
if (connection.isLink()) return; // Allow outgoing links.
if (connection.getClientProperties().find(ADMIN_TAG) != connection.getClientProperties().end()) {
QPID_LOG(trace, logPrefix << "Accepted admin connection: " << connection.getMgmtId());
return; // No need to call observer, always allow admins.
}
ObserverPtr o(getObserver());
if (o) o->opened(connection);
}
catch (const std::exception& e) {
QPID_LOG(error, logPrefix << "Error on incoming connection " << connection.getMgmtId()
<< ": " << e.what());
throw;
}
}
void ConnectionObserver::closed(broker::Connection& connection) {
if (isSelf(connection)) return; // Ignore closing of self connections.
try {
ObserverPtr o(getObserver());
if (o) o->closed(connection);
}
catch (const std::exception& e) {
QPID_LOG(error, logPrefix << "Error closing incoming connection " << connection.getMgmtId()
<< ": " << e.what());
throw;
}
}
const std::string ConnectionObserver::ADMIN_TAG="qpid.ha-admin";
const std::string ConnectionObserver::BACKUP_TAG="qpid.ha-backup";
const std::string ConnectionObserver::ADDRESS_TAG="qpid.ha-address";
}} // namespace qpid::ha
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