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// **********************************************************************
//
// Copyright (c) 2003-2006 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_I_H
#define TOPIC_I_H
#include <IceUtil/RecMutex.h>
#include <IceStorm/IceStormInternal.h>
#include <IceStorm/PersistentTopicMap.h>
#include <IceStorm/PersistentUpstreamMap.h>
#include <IceStorm/Event.h>
#include <list>
namespace IceStorm
{
class Instance;
typedef IceUtil::Handle<Instance> InstancePtr;
class Subscriber;
typedef IceUtil::Handle<Subscriber> SubscriberPtr;
class TopicI : public TopicInternal
{
public:
TopicI(const InstancePtr&, const std::string&, const LinkRecordDict&, const std::string&, const std::string&);
virtual std::string getName(const Ice::Current&) const;
virtual Ice::ObjectPrx getPublisher(const Ice::Current&) const;
virtual void subscribe(const QoS&, const Ice::ObjectPrx&, const Ice::Current&);
virtual Ice::ObjectPrx subscribeAndGetPublisher(const QoS&, const Ice::ObjectPrx&, const Ice::Current&);
virtual void unsubscribe(const Ice::ObjectPrx&, const Ice::Current&);
virtual TopicLinkPrx getLinkProxy(const Ice::Current&);
virtual void link(const TopicPrx&, Ice::Int, const Ice::Current&);
virtual void unlink(const TopicPrx&, const Ice::Current&);
virtual void unlinkByName(const std::string&, const Ice::Current&);
virtual LinkInfoSeq getLinkInfoSeq(const Ice::Current&) const;
virtual void destroy(const Ice::Current&);
virtual void linkNotification(const std::string&, const TopicUpstreamLinkPrx&, const Ice::Current&);
virtual void unlinkNotification(const std::string&, const TopicUpstreamLinkPrx&, const Ice::Current&);
// Internal methods
bool destroyed() const;
void reap();
void publish(bool, const EventSeq&);
private:
void removeSubscriber(const Ice::ObjectPrx&);
//
// Immutable members.
//
const InstancePtr _instance;
const std::string _name; // The topic name
/*const*/ Ice::ObjectPrx _publisherPrx;
/*const*/ TopicLinkPrx _linkPrx;
// Set of subscribers.
IceUtil::Mutex _subscribersMutex;
//
// We keep a vector of subscribers since the optimized behaviour
// should be publishing events, not searching through the list of
// subscribers for a particular subscriber. I tested
// vector/list/map and although there was little difference vector
// was the fastest of the three.
//
std::vector<SubscriberPtr> _subscribers;
// Set of subscribers that have encountered an error.
IceUtil::Mutex _errorMutex;
std::list<SubscriberPtr> _error;
const Freeze::ConnectionPtr _connection;
// The set of downstream topics.
IceUtil::RecMutex _topicRecordMutex;
PersistentTopicMap _topics;
IceStorm::LinkRecordDict _topicRecord;
// The set of upstream topics.
IceUtil::RecMutex _upstreamRecordMutex;
PersistentUpstreamMap _upstream;
IceStorm::TopicUpstreamLinkPrxSeq _upstreamRecord;
// Protected by either _upstreamRecordMutex or _topicRecordMutex
bool _destroyed; // Has this Topic been destroyed?
};
typedef IceUtil::Handle<TopicI> TopicIPtr;
} // End namespace IceStorm
#endif
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