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// **********************************************************************
//
// Copyright (c) 2003 - 2004
// ZeroC, Inc.
// North Palm Beach, FL, USA
//
// 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 SUBSCRIBER_FACTORY_H
#define SUBSCRIBER_FACTORY_H
#include <IceStorm/IceStormInternal.h> // For QoS, TopicLink
#include <IceStorm/QueuedProxy.h>
#include <IceUtil/RecMutex.h>
#include <map>
namespace IceStorm
{
//
// Forward declarations.
//
class TraceLevels;
typedef IceUtil::Handle<TraceLevels> TraceLevelsPtr;
class Subscriber;
typedef IceUtil::Handle<Subscriber> SubscriberPtr;
class Flusher;
typedef IceUtil::Handle<Flusher> FlusherPtr;
//
// Factory object that knows how to create various type of Subscriber
// objects.
//
class SubscriberFactory : public IceUtil::Shared
{
public:
SubscriberFactory(const Ice::CommunicatorPtr&, const TraceLevelsPtr&, const FlusherPtr&);
//
// Create a link subscriber (that is a subscriber that points to
// another topic instance).
//
SubscriberPtr createLinkSubscriber(const TopicLinkPrx&, Ice::Int);
//
// Create a Subscriber with the given QoS.
//
SubscriberPtr createSubscriber(const QoS&, const Ice::ObjectPrx&);
//
// Increment the usage count of a queued proxy.
//
void incProxyUsageCount(const QueuedProxyPtr&);
//
// Decrement the usage count of a queued proxy.
//
void decProxyUsageCount(const QueuedProxyPtr&);
private:
//
// SubscriberFactory maps all subscriber proxies to queued proxies.
// Only one queued proxy is created for a subscriber's proxy,
// regardless of how many topics it subscribes to.
//
struct ProxyInfo
{
QueuedProxyPtr proxy;
Ice::Int count;
};
Ice::CommunicatorPtr _communicator;
TraceLevelsPtr _traceLevels;
FlusherPtr _flusher;
IceUtil::RecMutex _proxiesMutex;
std::map<Ice::ObjectPrx, ProxyInfo> _proxies;
};
typedef IceUtil::Handle<SubscriberFactory> SubscriberFactoryPtr;
} // End namespace IceStorm
#endif
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