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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 "ReplicationTest.h"
#include "Settings.h"
#include "qpid/Url.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 <memory>
#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;
/**
* 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.
*/
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* 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; }
/** Shut down the broker. Caller should log a critical error message. */
void shutdown();
BrokerStatus getStatus() const;
void setStatus(BrokerStatus);
void activate();
Backup* getBackup() { return backup.get(); }
ReplicationTest getReplicationTest() const { return replicationTest; }
boost::shared_ptr<ConnectionObserver> getObserver() { return observer; }
const BrokerInfo& getBrokerInfo() const { return brokerInfo; }
void setMembership(const types::Variant::List&); // Set membership from list.
void resetMembership(const BrokerInfo& b); // Reset to contain just one member.
void addBroker(const BrokerInfo& b); // Add a broker to the membership.
void removeBroker(const types::Uuid& id); // Remove a broker from membership.
types::Uuid getSystemId() const { return systemId; }
private:
void setClientUrl(const Url&);
void setBrokerUrl(const Url&);
void updateClientUrl(sys::Mutex::ScopedLock&);
bool isPrimary(sys::Mutex::ScopedLock&) { return !backup.get(); }
void setStatus(BrokerStatus, sys::Mutex::ScopedLock&);
void recover();
void statusChanged(sys::Mutex::ScopedLock&);
void setLinkProperties(sys::Mutex::ScopedLock&);
std::vector<Url> getKnownBrokers() const;
void membershipUpdated(sys::Mutex::ScopedLock&);
std::string logPrefix;
broker::Broker& broker;
types::Uuid systemId;
const Settings settings;
mutable sys::Mutex lock;
boost::shared_ptr<ConnectionObserver> observer; // Used by Backup and Primary
std::auto_ptr<Backup> backup;
std::auto_ptr<Primary> primary;
qmf::org::apache::qpid::ha::HaBroker* mgmtObject;
Url clientUrl, brokerUrl;
std::vector<Url> knownBrokers;
BrokerStatus status;
BrokerInfo brokerInfo;
Membership membership;
ReplicationTest replicationTest;
};
}} // namespace qpid::ha
#endif /*!QPID_HA_BROKER_H*/
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