TopicManagerI.h

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// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
 
#ifndef TOPIC_MANAGER_I_H
#define TOPIC_MANAGER_I_H
 
#include <IceStorm/Election.h>
#include <IceStorm/IceStorm.h>
#include <IceStorm/Instrumentation.h>
#include <IceStorm/Replica.h>
#include <IceStorm/Util.h>
#include <IceUtil/RecMutex.h>
 
namespace IceStorm
{
 
    //
    // Forward declarations.
    //
    class PersistentInstance;
    typedef IceUtil::Handle<PersistentInstance> PersistentInstancePtr;
 
    class TopicImpl;
    typedef IceUtil::Handle<TopicImpl> TopicImplPtr;
 
    //
    // TopicManager implementation.
    //
    class TopicManagerImpl :
        public IceStormElection::Replica,
        public IceStorm::Instrumentation::ObserverUpdater,
        public IceUtil::RecMutex
    {
    public:
        TopicManagerImpl(const PersistentInstancePtr&);
 
        // TopicManager methods.
        TopicPrx create(const std::string&);
        TopicPrx retrieve(const std::string&) const;
        TopicDict retrieveAll() const;
 
        // Observer methods.
        void observerInit(const IceStormElection::LogUpdate&,
                          const IceStormElection::TopicContentSeq&);
        void observerCreateTopic(const IceStormElection::LogUpdate&, const std::string&);
        void observerDestroyTopic(const IceStormElection::LogUpdate&, const std::string&);
        void observerAddSubscriber(const IceStormElection::LogUpdate&,
                                   const std::string&,
                                   const IceStorm::SubscriberRecord&);
        void observerRemoveSubscriber(const IceStormElection::LogUpdate&,
                                      const std::string&,
                                      const Ice::IdentitySeq&);
 
        // Sync methods.
        void getContent(IceStormElection::LogUpdate&, IceStormElection::TopicContentSeq&);
 
        // Replica methods.
        virtual IceStormElection::LogUpdate getLastLogUpdate() const;
        virtual void sync(const Ice::ObjectPrx&);
        virtual void initMaster(const std::set<IceStormElection::GroupNodeInfo>&,
                                const IceStormElection::LogUpdate&);
        virtual Ice::ObjectPrx getObserver() const;
        virtual Ice::ObjectPrx getSync() const;
 
        void reap();
 
        void shutdown();
 
        Ice::ObjectPtr getServant() const;
 
    private:
        void updateTopicObservers();
        void updateSubscriberObservers();
 
        TopicPrx
        installTopic(const std::string&,
                     const Ice::Identity&,
                     bool,
                     const IceStorm::SubscriberRecordSeq& = IceStorm::SubscriberRecordSeq());
 
        const PersistentInstancePtr _instance;
 
        std::map<std::string, TopicImplPtr> _topics;
 
        Ice::ObjectPtr _managerImpl;
        Ice::ObjectPtr _observerImpl;
        Ice::ObjectPrx _observer;
        Ice::ObjectPtr _syncImpl;
        Ice::ObjectPrx _sync;
 
        LLUMap _lluMap;
        SubscriberMap _subscriberMap;
    };
 
    typedef IceUtil::Handle<TopicManagerImpl> TopicManagerImplPtr;
 
} // End namespace IceStorm
 
#endif