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// **********************************************************************
//
// Copyright (c) 2001
// MutableRealms, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
#include <Ice/Ice.h>
#include <IceStorm/TopicManagerI.h>
#include <IceStorm/TopicI.h>
#include <IceStorm/Flusher.h>
#include <IceStorm/TraceLevels.h>
#include <functional>
using namespace IceStorm;
using namespace std;
TopicManagerI::TopicManagerI(const Ice::CommunicatorPtr& communicator, const Ice::ObjectAdapterPtr& adapter,
const TraceLevelsPtr& traceLevels) :
_communicator(communicator),
_adapter(adapter),
_traceLevels(traceLevels)
{
_flusher = new Flusher(_communicator, _traceLevels);
}
TopicManagerI::~TopicManagerI()
{
}
TopicPrx
TopicManagerI::create(const string& name)
{
// TODO: reader/writer mutex
JTCSyncT<JTCMutex> sync(*this);
reap();
if (_topicIMap.find(name) != _topicIMap.end())
{
TopicExists ex;
ex.name = name;
throw ex;
}
if (_traceLevels->topicMgr > 0)
{
ostringstream s;
s << "Create " << name;
_communicator->getLogger()->trace(_traceLevels->topicMgrCat, s.str());
}
//
// Create topic implementation
//
TopicIPtr topicI = new TopicI(_adapter, _traceLevels, _communicator->getLogger(), name, _flusher);
_adapter->add(topicI, name);
_topicIMap.insert(TopicIMap::value_type(name, topicI));
return TopicPrx::uncheckedCast(_adapter->createProxy(name));
}
TopicPrx
TopicManagerI::retrieve(const string& name)
{
JTCSyncT<JTCMutex> sync(*this);
reap();
if (_topicIMap.find(name) != _topicIMap.end())
return TopicPrx::uncheckedCast(_adapter->createProxy(name));
NoSuchTopic ex;
ex.name = name;
throw ex;
}
//
// The arguments cannot be const & (for some reason)
//
static TopicDict::value_type
transformToTopicDict(TopicIMap::value_type p, Ice::ObjectAdapterPtr adapter)
{
return TopicDict::value_type(p.first, TopicPrx::uncheckedCast(adapter->createProxy(p.first)));
}
TopicDict
TopicManagerI::retrieveAll()
{
JTCSyncT<JTCMutex> sync(*this);
reap();
TopicDict all;
transform(_topicIMap.begin(), _topicIMap.end(), inserter(all, all.begin()),
bind2nd(ptr_fun(transformToTopicDict), _adapter));
return all;
}
void
TopicManagerI::subscribe(const string& id, const QoS& qos, const StringSeq& topics, const Ice::ObjectPrx& tmpl)
{
JTCSyncT<JTCMutex> sync(*this);
if (_traceLevels->topicMgr > 0)
{
ostringstream s;
s << "Subscribe: " << id;
if (_traceLevels->topicMgr > 1)
{
s << " QoS: ";
for (QoS::const_iterator qi = qos.begin(); qi != qos.end() ; ++qi)
{
if (qi != qos.begin())
{
s << ',';
}
s << '[' << qi->first << "," << qi->second << ']';
}
s << " Topics: ";
for (StringSeq::const_iterator ti = topics.begin(); ti != topics.end() ; ++ti)
{
if (ti != topics.begin())
{
s << ",";
}
s << *ti;
}
}
_communicator->getLogger()->trace(_traceLevels->topicMgrCat, s.str());
}
//
// First scan the set of topics to ensure that each exists.
//
// TODO: This could be slightly optimized by remembering the
// TopicIPtr's so that the list doesn't need to scanned again.
//
StringSeq::const_iterator i;
for (i = topics.begin() ; i != topics.end() ; ++i)
{
TopicIMap::iterator elem = _topicIMap.find(*i);
if (elem == _topicIMap.end())
{
NoSuchTopic ex;
ex.name = *i;
throw ex;
}
}
//
// Now subscribe to each Topic.
//
for (i = topics.begin() ; i != topics.end() ; ++i)
{
TopicIMap::iterator elem = _topicIMap.find(*i);
if (elem != _topicIMap.end())
{
elem->second->subscribe(tmpl, id, qos);
}
}
}
void
TopicManagerI::unsubscribe(const string& id, const StringSeq& topics)
{
JTCSyncT<JTCMutex> sync(*this);
if (_traceLevels->topicMgr > 0)
{
ostringstream s;
s << "Unsubscribe: " << id;
if (_traceLevels->topicMgr > 1)
{
s << " Topics: ";
for (StringSeq::const_iterator ti = topics.begin(); ti != topics.end() ; ++ti)
{
if (ti != topics.begin())
{
s << ",";
}
s << *ti;
}
}
_communicator->getLogger()->trace(_traceLevels->topicMgrCat, s.str());
}
for (StringSeq::const_iterator i = topics.begin() ; i != topics.end() ; ++i)
{
TopicIMap::iterator elem = _topicIMap.find(*i);
if (elem != _topicIMap.end())
{
elem->second->unsubscribe(id);
}
}
}
void
TopicManagerI::shutdown()
{
_flusher->stopFlushing();
_communicator->shutdown();
}
void
TopicManagerI::reap()
{
//
// Always Called with mutex locked
//
// JTCSyncT<JTCMutex> sync(*this);
//
TopicIMap::iterator i = _topicIMap.begin();
while (i != _topicIMap.end())
{
if (i->second->destroyed())
{
if (_traceLevels->topicMgr > 0)
{
ostringstream s;
s << "Reaping " << i->first;
_communicator->getLogger()->trace(_traceLevels->topicMgrCat, s.str());
}
_topicIMap.erase(i++);
}
else
{
++i;
}
}
}
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