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// **********************************************************************
//
// Copyright (c) 2003-2005 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 <IceGrid/NodeRegistryI.h>
#include <IceGrid/AdapterFactory.h>
#include <IceGrid/TraceLevels.h>
#include <Freeze/Initialize.h>
using namespace std;
using namespace IceGrid;
const string NodeRegistryI::_dbName = "noderegistry";
NodeRegistryI::NodeRegistryI(const Ice::CommunicatorPtr& communicator,
const string& envName,
const AdapterRegistryPtr& adapterRegistry,
const AdapterFactoryPtr& adapterFactory,
const TraceLevelsPtr& traceLevels) :
_connectionCache(Freeze::createConnection(communicator, envName)),
_dictCache(_connectionCache, _dbName),
_adapterRegistry(adapterRegistry),
_adapterFactory(adapterFactory),
_traceLevels(traceLevels),
_envName(envName),
_communicator(communicator)
{
for(StringObjectProxyDict::iterator p = _dictCache.begin(); p != _dictCache.end(); ++p)
{
NodePrx node = NodePrx::uncheckedCast(p->second);
try
{
node->ice_ping();
}
catch(const Ice::ObjectNotExistException&)
{
remove(p->first);
}
catch(const Ice::LocalException&)
{
}
}
}
void
NodeRegistryI::add(const string& name, const NodePrx& node, const Ice::Current& current)
{
while(true)
{
NodePrx oldNode;
try
{
oldNode = findByName(name, current);
oldNode->ice_ping();
throw NodeActiveException();
}
catch(const NodeNotExistException&)
{
}
catch(const Ice::LocalException&)
{
}
IceUtil::Mutex::Lock sync(*this);
Freeze::ConnectionPtr connection = Freeze::createConnection(_communicator, _envName);
StringObjectProxyDict dict(connection, _dbName);
StringObjectProxyDict::iterator p = dict.find(name);
if(p != dict.end())
{
if(oldNode && oldNode != p->second)
{
continue;
}
p.set(node);
if(_traceLevels->nodeRegistry > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->nodeRegistryCat);
out << "updated node `" << name << "' proxy";
}
}
else
{
dict.put(pair<const string, const Ice::ObjectPrx>(name, node));
if(_traceLevels->nodeRegistry > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->nodeRegistryCat);
out << "added node `" << name << "'";
}
}
break;
}
//
// Set the direct proxy of the node object adapter.
//
while(true)
{
try
{
//
// TODO: ensure this adapter has been created by the adapter factory. It's possible that an
// adapter has been created with the same name. In such a case, the best is probably to
// prevent the node registration by throwing an appropriate exception. The user would then
// need to remove the adapter from the adapter registry to be able to run the node.
//
AdapterPrx adapter = _adapterRegistry->findById("IceGrid.Node." + name);
adapter->setDirectProxy(node);
return;
}
catch(const AdapterNotExistException&)
{
}
catch(const Ice::ObjectNotExistException&)
{
}
//
// Create and register the node adapter.
//
AdapterPrx adapter = _adapterFactory->createStandaloneAdapter("IceGridNodeAdapter." + name);
try
{
_adapterRegistry->add("IceGrid.Node." + name, adapter);
}
catch(const AdapterExistsException&)
{
adapter->destroy();
}
}
}
void
NodeRegistryI::remove(const string& name, const Ice::Current&)
{
IceUtil::Mutex::Lock sync(*this);
Freeze::ConnectionPtr connection = Freeze::createConnection(_communicator, _envName);
StringObjectProxyDict dict(connection, _dbName);
StringObjectProxyDict::iterator p = dict.find(name);
if(p == dict.end())
{
throw NodeNotExistException();
}
dict.erase(p);
if(_traceLevels->nodeRegistry > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->nodeRegistryCat);
out << "removed node `" << name << "'";
}
//
// Remove the adapter from the adapter registry.
//
try
{
AdapterPrx adapter = _adapterRegistry->findById("IceGrid.Node." + name);
adapter->destroy();
_adapterRegistry->remove("IceGrid.Node." + name, 0);
}
catch(const AdapterNotExistException&)
{
}
}
NodePrx
NodeRegistryI::findByName(const string& name, const Ice::Current&)
{
Freeze::ConnectionPtr connection = Freeze::createConnection(_communicator, _envName);
StringObjectProxyDict dict(connection, _dbName);
StringObjectProxyDict::iterator p = dict.find(name);
if(p != dict.end())
{
try
{
return NodePrx::checkedCast(p->second);
}
catch(const Ice::ObjectNotExistException&)
{
}
catch(const Ice::LocalException&)
{
return NodePrx::uncheckedCast(p->second);
}
}
throw NodeNotExistException();
}
Ice::StringSeq
NodeRegistryI::getAll(const Ice::Current&) const
{
Freeze::ConnectionPtr connection = Freeze::createConnection(_communicator, _envName);
StringObjectProxyDict dict(connection, _dbName);
Ice::StringSeq names;
names.reserve(dict.size());
for(StringObjectProxyDict::iterator p = dict.begin(); p != dict.end(); ++p)
{
names.push_back(p->first);
}
return names;
}
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