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// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#include <Ice/Ice.h>
#include <IceStorm/LinkSubscriber.h>
#include <IceStorm/SubscriberFactory.h>
#include <IceStorm/TraceLevels.h>
using namespace IceStorm;
using namespace std;
LinkSubscriber::LinkSubscriber(const SubscriberFactoryPtr& factory, const Ice::CommunicatorPtr& communicator,
const TraceLevelsPtr& traceLevels, const QueuedProxyPtr& obj, Ice::Int cost) :
Subscriber(traceLevels, obj->proxy()->ice_getIdentity()),
_factory(factory), _communicator(communicator), _obj(obj), _cost(cost)
{
_factory->incProxyUsageCount(_obj);
}
LinkSubscriber::~LinkSubscriber()
{
_factory->decProxyUsageCount(_obj);
}
bool
LinkSubscriber::persistent() const
{
return true;
}
bool
LinkSubscriber::inactive() const
{
return Subscriber::inactive();
}
void
LinkSubscriber::unsubscribe()
{
IceUtil::Mutex::Lock sync(_stateMutex);
_state = StateUnsubscribed;
if(_traceLevels->subscriber > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->subscriberCat);
out << "Unsubscribe " << id();
}
}
void
LinkSubscriber::replace()
{
IceUtil::Mutex::Lock sync(_stateMutex);
_state = StateReplaced;
if(_traceLevels->subscriber > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->subscriberCat);
out << "Replace " << id();
}
}
void
LinkSubscriber::publish(const EventPtr& event)
{
//
// Don't propagate a message that has already been forwarded.
// Also, if this link has a non-zero cost, then don't propagate
// a message whose cost exceeds the link cost.
//
if(event->forwarded || (_cost > 0 && event->cost > _cost))
{
return;
}
try
{
_obj->publish(event);
}
catch(const Ice::ObjectNotExistException& e)
{
//
// ObjectNotExist causes the link to be removed.
//
IceUtil::Mutex::Lock sync(_stateMutex);
_state = StateError;
if(_traceLevels->subscriber > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->subscriberCat);
out << id() << ": link topic publish failed: " << e;
}
}
catch(const Ice::LocalException& e)
{
if(_traceLevels->subscriber > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->subscriberCat);
out << id() << ": link topic publish failed: " << e;
}
}
}
void
LinkSubscriber::flush()
{
_communicator->flushBatchRequests();
}
bool
LinkSubscriber::operator==(const Flushable& therhs) const
{
const LinkSubscriber* rhs = dynamic_cast<const LinkSubscriber*>(&therhs);
if(rhs != 0)
{
return id() == rhs->id();
}
return false;
}
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