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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 <IceUtil/UUID.h>
#include <Freeze/DB.h>
#include <Freeze/Evictor.h>
#include <Freeze/Initialize.h>
#include <IcePack/ServerFactory.h>
#include <IcePack/ServerI.h>
#include <IcePack/ServerAdapterI.h>
#include <IcePack/TraceLevels.h>
#include <map>
using namespace std;
using namespace IcePack;
namespace IcePack
{
class ServerFactoryServantLocator : public Ice::ServantLocator
{
};
class ServerFactoryServantInitializer : public Freeze::ServantInitializer
{
public:
virtual void
initialize(const Ice::ObjectAdapterPtr& adapter, const Ice::Identity& identity, const Ice::ObjectPtr& servant)
{
//
// Add the servant to the adapter active object map. This will
// prevent the evictor from evicting the servant. We just use
// the evictor to load servants from the database.
//
// TODO: Implement our own servant locator instead of using
// the evictor.
//
adapter->add(servant, identity);
}
};
};
IcePack::ServerFactory::ServerFactory(const Ice::ObjectAdapterPtr& adapter,
const TraceLevelsPtr& traceLevels,
const string& envName,
const ActivatorPtr& activator,
const WaitQueuePtr& waitQueue) :
_adapter(adapter),
_traceLevels(traceLevels),
_activator(activator),
_waitQueue(waitQueue)
{
Ice::PropertiesPtr properties = _adapter->getCommunicator()->getProperties();
_waitTime = properties->getPropertyAsIntWithDefault("IcePack.Node.WaitTime", 60);
Freeze::ServantInitializerPtr initializer = new ServerFactoryServantInitializer();
//
// Create and install the freeze evictor for server objects.
//
_serverEvictor = Freeze::createEvictor(_adapter->getCommunicator(), envName, "servers");
_serverEvictor->setSize(10000);
_serverEvictor->installServantInitializer(initializer);
//
// Create and install the freeze evictor for server adapter objects.
//
_serverAdapterEvictor = Freeze::createEvictor(_adapter->getCommunicator(), envName, "serveradapters");
_serverAdapterEvictor->setSize(10000);
_serverAdapterEvictor->installServantInitializer(initializer);
//
// Install the server object factory.
//
_adapter->getCommunicator()->addObjectFactory(this, "::IcePack::Server");
_adapter->getCommunicator()->addObjectFactory(this, "::IcePack::ServerAdapter");
//
// Install the evictors.
//
_adapter->addServantLocator(_serverEvictor, "IcePackServer");
_adapter->addServantLocator(_serverAdapterEvictor, "IcePackServerAdapter");
}
//
// Ice::ObjectFactory::create method implementation
//
Ice::ObjectPtr
IcePack::ServerFactory::create(const string& type)
{
if(type == "::IcePack::Server")
{
return new ServerI(this, _traceLevels, _activator, _waitTime);
}
else if(type == "::IcePack::ServerAdapter")
{
return new ServerAdapterI(this, _traceLevels, _waitTime);
}
else
{
assert(false);
return 0; // Keep the compiler happy.
}
}
//
// Ice::ObjectFactory::destroy method implementation
//
void
IcePack::ServerFactory::destroy()
{
_adapter = 0;
_serverEvictor = 0;
_serverAdapterEvictor = 0;
_traceLevels = 0;
_activator = 0;
}
//
// Create a new server servant and new server adapter servants from
// the given description.
//
ServerPrx
IcePack::ServerFactory::createServerAndAdapters(const ServerDescription& description,
const vector<string>& adapterIds,
map<string, ServerAdapterPrx>& adapters)
{
//
// Create the server object.
//
ServerPtr serverI = new ServerI(this, _traceLevels, _activator, _waitTime);
serverI->description = description;
Ice::Identity id;
id.category = "IcePackServer";
id.name = description.name + "-" + IceUtil::generateUUID();
//
// Create the server adapters.
//
ServerPrx proxy = ServerPrx::uncheckedCast(_adapter->createProxy(id));
for(Ice::StringSeq::const_iterator p = adapterIds.begin(); p != adapterIds.end(); ++p)
{
ServerAdapterPrx adapterProxy = createServerAdapter(*p, proxy);
adapters[*p] = adapterProxy;
serverI->adapters.push_back(adapterProxy);
}
//
// By default server is always activated on demand.
//
serverI->activation = OnDemand;
_adapter->add(serverI, id);
_serverEvictor->createObject(id, serverI);
if(_traceLevels->server > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->serverCat);
out << "created server `" << description.name << "'";
}
return proxy;
}
const WaitQueuePtr&
IcePack::ServerFactory::getWaitQueue() const
{
return _waitQueue;
}
//
// Create a new server adapter servant with the given name and server
// and add it the evictor database.
//
ServerAdapterPrx
IcePack::ServerFactory::createServerAdapter(const string& adapterId, const ServerPrx& server)
{
ServerAdapterPtr adapterI = new ServerAdapterI(this, _traceLevels, _waitTime);
adapterI->id = adapterId;
adapterI->svr = server;
Ice::Identity id;
id.category = "IcePackServerAdapter";
id.name = adapterId + "-" + IceUtil::generateUUID();
_adapter->add(adapterI, id);
_serverAdapterEvictor->createObject(id, adapterI);
if(_traceLevels->adapter > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->adapterCat);
out << "created server adapter `" << adapterId << "'";
}
return ServerAdapterPrx::uncheckedCast(_adapter->createProxy(id));
}
void
IcePack::ServerFactory::destroy(const ServerPtr& server, const Ice::Identity& identity)
{
try
{
_serverEvictor->destroyObject(identity);
if(_traceLevels->server > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->serverCat);
out << "destroyed server `" << server->description.name << "'";
}
}
catch(const Freeze::DBException& ex)
{
ostringstream os;
os << "couldn't destroy server `" << server->description.name << "':\n" << ex;
_traceLevels->logger->warning(os.str());
}
catch(const Freeze::EvictorDeactivatedException&)
{
assert(false);
}
_adapter->remove(identity);
}
void
IcePack::ServerFactory::destroy(const ServerAdapterPtr& adapter, const Ice::Identity& identity)
{
try
{
_serverAdapterEvictor->destroyObject(identity);
if(_traceLevels->adapter > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->adapterCat);
out << "destroyed server adapter `" << adapter->id << "'";
}
}
catch(const Freeze::DBException& ex)
{
ostringstream os;
os << "couldn't destroy server adapter `" << adapter->id << "':\n" << ex;
_traceLevels->logger->warning(os.str());
}
catch(const Freeze::EvictorDeactivatedException&)
{
assert(false);
}
_adapter->remove(identity);
}
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