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#ifndef QPID_HA_BROKER_H
#define QPID_HA_BROKER_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 "BrokerInfo.h"
#include "Membership.h"
#include "types.h"
#include "LogPrefix.h"
#include "Settings.h"
#include "qpid/Url.h"
#include "FailoverExchange.h"
#include "qpid/sys/Mutex.h"
#include "qmf/org/apache/qpid/ha/HaBroker.h"
#include "qpid/management/Manageable.h"
#include "qpid/types/Variant.h"
#include <set>
#include <boost/shared_ptr.hpp>
namespace qpid {
namespace types {
class Variant;
}
namespace broker {
class Broker;
class Queue;
}
namespace framing {
class FieldTable;
}
namespace ha {
class Backup;
class ConnectionObserver;
class Primary;
class Role;
class QueueReplicator;
/**
* HA state and actions associated with a HA broker. Holds all the management info.
*
* THREAD SAFE: may be called in arbitrary broker IO or timer threads.
* NOTE: HaBroker and Role subclasses follow this lock hierarchy:
* - HaBroker MUST NOT hold its own lock across calls Role subclasses.
* - Role subclasses MAY hold their locks accross calls to HaBroker.
*/
class HaBroker : public management::Manageable
{
public:
/** HaBroker is constructed during earlyInitialize */
HaBroker(broker::Broker&, const Settings&);
~HaBroker();
/** Called during plugin initialization */
void initialize();
// Implement Manageable.
qpid::management::ManagementObject::shared_ptr GetManagementObject() const { return mgmtObject; }
management::Manageable::status_t ManagementMethod (
uint32_t methodId, management::Args& args, std::string& text);
broker::Broker& getBroker() { return broker; }
const Settings& getSettings() const { return settings; }
boost::shared_ptr<Role> getRole() const {return role; }
/** Shut down the broker because of a critical error. */
void shutdown(const std::string& message);
BrokerStatus getStatus() const;
boost::shared_ptr<ConnectionObserver> getObserver() { return observer; }
BrokerInfo getBrokerInfo() const { return membership.getSelf(); }
Membership& getMembership() { return membership; }
types::Uuid getSystemId() const { return systemId; }
void setAddress(const Address&); // set self address from a self-connection
boost::shared_ptr<QueueReplicator> findQueueReplicator(const std::string& queueName);
/** Authenticated user ID for queue create/delete */
std::string getUserId() const { return userId; }
/** logPrefix is thread safe and used by other classes (Membership) */
LogPrefix logPrefix;
private:
class BrokerObserver;
void setPublicUrl(const Url&);
void setBrokerUrl(const Url&);
void updateClientUrl(sys::Mutex::ScopedLock&);
std::vector<Url> getKnownBrokers() const;
// Immutable members
const types::Uuid systemId;
const Settings settings;
const std::string userId;
// Member variables protected by lock
mutable sys::Mutex lock;
Url publicUrl, brokerUrl;
std::vector<Url> knownBrokers;
// Independently thread-safe member variables
broker::Broker& broker;
qmf::org::apache::qpid::ha::HaBroker::shared_ptr mgmtObject;
boost::shared_ptr<ConnectionObserver> observer; // Used by Backup and Primary
boost::shared_ptr<Role> role;
Membership membership;
boost::shared_ptr<FailoverExchange> failoverExchange;
};
}} // namespace qpid::ha
#endif /*!QPID_HA_BROKER_H*/
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