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// **********************************************************************
//
// Copyright (c) 2003-2008 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.
//
// **********************************************************************
#include <IceUtil/DisableWarnings.h>
#include <IceStorm/TopicManagerI.h>
#include <IceStorm/TopicI.h>
#include <IceStorm/SubscriberPool.h>
#include <IceStorm/BatchFlusher.h>
#include <IceStorm/TraceLevels.h>
#include <IceStorm/Instance.h>
#include <Freeze/Initialize.h>
#include <Ice/SliceChecksums.h>
#include <functional>
#include <ctype.h>
using namespace IceStorm;
using namespace std;
namespace IceStorm
{
string
identityToTopicName(const Ice::Identity& id)
{
//
// Work out the topic name. If the category is empty then we're in
// backwards compatibility mode and the name is just
// identity.name. Otherwise identity.name is topic.<topicname>.
//
if(id.category.empty())
{
return id.name;
}
assert(id.name.length() > 6 && id.name.compare(0, 6, "topic.") == 0);
return id.name.substr(6);
}
}
TopicManagerI::TopicManagerI(
const InstancePtr& instance,
const Ice::ObjectAdapterPtr& topicAdapter,
const string& envName,
const string& dbName) :
_instance(instance),
_topicAdapter(topicAdapter),
_envName(envName),
_dbName(dbName),
_connection(Freeze::createConnection(instance->communicator(), envName)),
_topics(_connection, dbName)
{
//
// Recreate each of the topics in the persistent map
//
for(PersistentTopicMap::const_iterator p = _topics.begin(); p != _topics.end(); ++p)
{
installTopic(identityToTopicName(p->first), p->first, p->second, false);
}
}
TopicManagerI::~TopicManagerI()
{
}
TopicPrx
TopicManagerI::create(const string& name, const Ice::Current&)
{
IceUtil::Mutex::Lock sync(*this);
reap();
if(_topicIMap.find(name) != _topicIMap.end())
{
TopicExists ex;
ex.name = name;
throw ex;
}
// Identity is instanceName>/topic.<topicname>
Ice::Identity id;
id.category = _instance->instanceName();
id.name = "topic." + name;
_topics.put(PersistentTopicMap::value_type(id, LinkRecordSeq()));
return installTopic(name, id, LinkRecordSeq(), true);
}
TopicPrx
TopicManagerI::retrieve(const string& name, const Ice::Current&) const
{
IceUtil::Mutex::Lock sync(*this);
TopicManagerI* This = const_cast<TopicManagerI*>(this);
This->reap();
TopicIMap::const_iterator p = _topicIMap.find(name);
if(p == _topicIMap.end())
{
NoSuchTopic ex;
ex.name = name;
throw ex;
}
// Here we cannot just reconstruct the identity since the
// identity could be either instanceName/topic name, or if
// created with pre-3.2 IceStorm / topic name.
return TopicPrx::uncheckedCast(_topicAdapter->createProxy(p->second->id()));
}
TopicDict
TopicManagerI::retrieveAll(const Ice::Current&) const
{
IceUtil::Mutex::Lock sync(*this);
TopicManagerI* This = const_cast<TopicManagerI*>(this);
This->reap();
TopicDict all;
for(TopicIMap::const_iterator p = _topicIMap.begin(); p != _topicIMap.end(); ++p)
{
//
// Here we cannot just reconstruct the identity since the
// identity could be either "<instanceName>/topic.<topicname>"
// name, or if created with pre-3.2 IceStorm "/<topicname>".
//
all.insert(TopicDict::value_type(
p->first, TopicPrx::uncheckedCast(_topicAdapter->createProxy(p->second->id()))));
}
return all;
}
Ice::SliceChecksumDict
TopicManagerI::getSliceChecksums(const Ice::Current&) const
{
return Ice::sliceChecksums();
}
void
TopicManagerI::reap()
{
//
// Always called with mutex locked.
//
// IceUtil::Mutex::Lock sync(*this);
//
TopicIMap::iterator i = _topicIMap.begin();
while(i != _topicIMap.end())
{
if(i->second->destroyed())
{
Ice::Identity id = i->second->id();
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topicMgr > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicMgrCat);
out << "Reaping " << i->first;
}
_topics.erase(id);
try
{
_topicAdapter->remove(id);
}
catch(const Ice::ObjectAdapterDeactivatedException&)
{
// Ignore
}
_topicIMap.erase(i++);
}
else
{
++i;
}
}
}
void
TopicManagerI::shutdown()
{
IceUtil::Mutex::Lock sync(*this);
reap();
for(TopicIMap::const_iterator p = _topicIMap.begin(); p != _topicIMap.end(); ++p)
{
p->second->reap();
}
}
TopicPrx
TopicManagerI::installTopic(const string& name, const Ice::Identity& id, const LinkRecordSeq& rec, bool create)
{
//
// Called by constructor or with 'this' mutex locked.
//
TraceLevelsPtr traceLevels = _instance->traceLevels();
if(traceLevels->topicMgr > 0)
{
Ice::Trace out(traceLevels->logger, traceLevels->topicMgrCat);
if(create)
{
out << "creating new topic \"" << name << "\". id: "
<< _instance->communicator()->identityToString(id);
}
else
{
out << "loading topic \"" << name << "\" from database. id: "
<< _instance->communicator()->identityToString(id);
}
}
//
// Create topic implementation
//
TopicIPtr topicI = new TopicI(_instance, name, id, rec, _envName, _dbName);
//
// The identity is the name of the Topic.
//
TopicPrx prx = TopicPrx::uncheckedCast(_topicAdapter->add(topicI, id));
_topicIMap.insert(TopicIMap::value_type(name, topicI));
return prx;
}
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