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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
#ifndef OBSERVERS_H
#define OBSERVERS_H
#include <Ice/Ice.h>
#include <IceUtil/IceUtil.h>
#include <IceStorm/Election.h>
#include <IceStorm/Replica.h>
namespace IceStorm
{
class TraceLevels;
}
namespace IceStormElection
{
class Observers
{
public:
Observers(std::shared_ptr<IceStorm::TraceLevels>);
void setMajority(unsigned int);
// Check that we have enough nodes for replication.
bool check();
void clear();
void init(const std::set<IceStormElection::GroupNodeInfo>&, const LogUpdate&, const TopicContentSeq&);
void createTopic(const LogUpdate&, const std::string&);
void destroyTopic(const LogUpdate&, const std::string&);
void addSubscriber(const LogUpdate&, const std::string&, const IceStorm::SubscriberRecord&);
void removeSubscriber(const LogUpdate&, const std::string&, const Ice::IdentitySeq&);
void getReapedSlaves(std::vector<int>&);
private:
void wait(const std::string&);
const std::shared_ptr<IceStorm::TraceLevels> _traceLevels;
unsigned int _majority;
struct ObserverInfo
{
int id;
std::shared_ptr<ReplicaObserverPrx> observer;
std::future<void> future;
};
std::vector<ObserverInfo> _observers;
std::mutex _reapedMutex;
std::vector<int> _reaped;
std::mutex _mutex;
};
}
#endif // OBSERVERS_H
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