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#ifndef QPID_HA_REPLICATOR_H
#define QPID_HA_REPLICATOR_H
/*
*
* 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 "types.h"
#include "ReplicationTest.h"
#include "AlternateExchangeSetter.h"
#include "qpid/Address.h"
#include "qpid/broker/Exchange.h"
#include "qpid/types/Variant.h"
#include "qpid/management/ManagementObject.h"
#include <boost/shared_ptr.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <set>
namespace qpid {
namespace broker {
class AsyncStore;
class Broker;
class Link;
class Bridge;
class SessionHandler;
class Connection;
class QueueRegistry;
class ExchangeRegistry;
}
namespace framing {
class FieldTable;
}
namespace ha {
class HaBroker;
class QueueReplicator;
/**
* Replicate configuration on a backup broker.
*
* Implemented as an exchange that subscribes to receive QMF
* configuration events from the primary. It configures local queues
* exchanges and bindings to replicate the primary.
* It also creates QueueReplicators for newly replicated queues.
*
* THREAD UNSAFE:
* All members except shutdown are only called in the Link's connection thread context.
* shutdown() does not use any mutable state.
*
*/
class BrokerReplicator : public broker::Exchange,
public boost::enable_shared_from_this<BrokerReplicator>
{
public:
BrokerReplicator(HaBroker&, const boost::shared_ptr<broker::Link>&);
~BrokerReplicator();
void initialize();
// Exchange methods
std::string getType() const;
bool bind(boost::shared_ptr<broker::Queue>, const std::string&, const framing::FieldTable*, qpid::broker::AsyncStore* const store);
bool unbind(boost::shared_ptr<broker::Queue>, const std::string&, const framing::FieldTable*, qpid::broker::AsyncStore* const store);
void route(broker::Deliverable&);
bool isBound(boost::shared_ptr<broker::Queue>, const std::string* const, const framing::FieldTable* const);
void shutdown();
// DataSource interface - used to write persistence data to async store
uint64_t getSize();
void write(char* target);
private:
typedef boost::shared_ptr<QueueReplicator> QueueReplicatorPtr;
typedef std::pair<boost::shared_ptr<broker::Queue>, bool> CreateQueueResult;
typedef std::pair<boost::shared_ptr<broker::Exchange>, bool> CreateExchangeResult;
typedef std::pair<std::string,std::string> EventKey;
typedef void (BrokerReplicator::*DispatchFunction)(types::Variant::Map&);
typedef std::map<EventKey, DispatchFunction> EventDispatchMap;
typedef std::map<std::string, QueueReplicatorPtr> QueueReplicatorMap;
class UpdateTracker;
class ErrorListener;
class ConnectionObserver;
void connected(broker::Bridge&, broker::SessionHandler&);
void doEventQueueDeclare(types::Variant::Map& values);
void doEventQueueDelete(types::Variant::Map& values);
void doEventExchangeDeclare(types::Variant::Map& values);
void doEventExchangeDelete(types::Variant::Map& values);
void doEventBind(types::Variant::Map&);
void doEventUnbind(types::Variant::Map&);
void doEventMembersUpdate(types::Variant::Map&);
void doEventSubscribe(types::Variant::Map&);
void doResponseQueue(types::Variant::Map& values);
void doResponseExchange(types::Variant::Map& values);
void doResponseBind(types::Variant::Map& values);
void doResponseHaBroker(types::Variant::Map& values);
QueueReplicatorPtr findQueueReplicator(const std::string& qname);
QueueReplicatorPtr startQueueReplicator(const boost::shared_ptr<broker::Queue>&);
QueueReplicatorPtr replicateQueue(
const std::string& name,
bool durable,
bool autodelete,
const qpid::framing::FieldTable& arguments,
const std::string& alternateExchange);
CreateExchangeResult createExchange(
const std::string& name,
const std::string& type,
bool durable,
const qpid::framing::FieldTable& args,
const std::string& alternateExchange);
bool deactivate(boost::shared_ptr<broker::Exchange> ex, bool destroy);
void deleteQueue(const std::string& name, bool purge=true);
void deleteExchange(const std::string& name);
void autoDeleteCheck(boost::shared_ptr<broker::Exchange>);
void disconnected();
void setMembership(const types::Variant::List&); // Set membership from list.
std::string logPrefix;
ReplicationTest replicationTest;
std::string userId, remoteHost;
HaBroker& haBroker;
broker::Broker& broker;
broker::ExchangeRegistry& exchanges;
broker::QueueRegistry& queues;
boost::shared_ptr<broker::Link> link;
bool initialized;
AlternateExchangeSetter alternates;
qpid::Address primary;
typedef std::set<std::string> StringSet;
StringSet replicatedExchanges; // exchanges that have been replicated.
broker::Connection* connection;
EventDispatchMap dispatch;
std::auto_ptr<UpdateTracker> queueTracker;
std::auto_ptr<UpdateTracker> exchangeTracker;
boost::shared_ptr<ConnectionObserver> connectionObserver;
};
}} // namespace qpid::broker
#endif /*!QPID_HA_REPLICATOR_H*/
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