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#ifndef QPID_CLUSTER_INITIALSTATUSMAP_H
#define QPID_CLUSTER_INITIALSTATUSMAP_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 "MemberSet.h"
#include <qpid/framing/ClusterInitialStatusBody.h>
#include <boost/optional.hpp>
namespace qpid {
namespace cluster {
/**
* Track status of cluster members during initialization.
*/
class InitialStatusMap
{
public:
typedef framing::ClusterInitialStatusBody Status;
InitialStatusMap(const MemberId& self, size_t size);
/** Process a config change. @return true if we need to re-send our status */
void configChange(const MemberSet& newConfig);
/** @return true if we need to re-send status */
bool isResendNeeded();
/** Process received status */
void received(const MemberId&, const Status& is);
/**@return true if the map is complete. */
bool isComplete();
/**@return true if the map was completed by the last config change or received. */
bool transitionToComplete();
/**@pre isComplete(). @return this node's elders */
MemberSet getElders();
/**@pre isComplete(). @return True if we need an update. */
bool isUpdateNeeded();
/**@pre isComplete(). @return Cluster-wide cluster ID. */
framing::Uuid getClusterId();
/**@pre isComplete(). @throw Exception if there are any inconsistencies. */
void checkConsistent();
private:
typedef std::map<MemberId, boost::optional<Status> > Map;
static bool notInitialized(const Map::value_type&);
static bool isActive(const Map::value_type&);
static bool hasStore(const Map::value_type&);
Map map;
MemberSet firstConfig;
MemberId self;
bool completed, resendNeeded;
size_t size;
};
}} // namespace qpid::cluster
#endif /*!QPID_CLUSTER_INITIALSTATUSMAP_H*/
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