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// **********************************************************************
//
// Copyright (c) 2003-2006 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 <Ice/LoggerUtil.h>
#include <IceGrid/ReplicaCache.h>
#include <IceGrid/ReplicaSessionI.h>
#include <IceGrid/Database.h>
#include <IceGrid/Topics.h>
using namespace std;
using namespace IceGrid;
ReplicaCache::ReplicaCache(const Ice::CommunicatorPtr& communicator,
const IceStorm::TopicManagerPrx& topicManager,
const std::string& instanceName,
const Ice::ObjectPrx& clientProxy,
const Ice::ObjectPrx& serverProxy) :
_communicator(communicator),
_instanceName(instanceName),
_clientProxy(clientProxy),
_serverProxy(serverProxy)
{
IceStorm::TopicPrx t;
try
{
t = topicManager->create("NodeNotifier");
}
catch(const IceStorm::TopicExists&)
{
t = topicManager->retrieve("NodeNotifier");
}
const_cast<IceStorm::TopicPrx&>(_topic) = t;
const_cast<NodePrx&>(_nodes) = NodePrx::uncheckedCast(_topic->getPublisher());
}
void
ReplicaCache::destroy()
{
//
// TODO: XXX: Is this also really needed for replicas?!
//
_entries.clear();
}
void
ReplicaCache::add(const string& name, const ReplicaSessionIPtr& session, const DatabasePtr& database)
{
Lock sync(*this);
if(getImpl(name))
{
throw ReplicaActiveException();
}
if(_traceLevels && _traceLevels->replica > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->replicaCat);
out << "replica `" << name << "' up";
}
addImpl(name, new ReplicaEntry(name, session));
ObjectInfo info;
info.type = InternalRegistry::ice_staticId();
info.proxy = session->getProxy();
database->addObject(info, true);
Ice::ObjectPrx clientProxy = getClientProxy();
Ice::Identity id;
id.category = _instanceName;
id.name = "Query";
database->updateObject(clientProxy->ice_identity(id));
RegistryObserverTopicPtr topic = database->getRegistryObserverTopic();
if(topic)
{
topic->subscribe(session->getReplicaInfo().observer);
}
try
{
_nodes->replicaAdded(session->getProxy());
}
catch(const Ice::LocalException&)
{
// TODO: XXX
}
}
void
ReplicaCache::remove(const string& name, const DatabasePtr& database)
{
Lock sync(*this);
ReplicaEntryPtr entry = removeImpl(name);
assert(entry);
try
{
_nodes->replicaRemoved(entry->getSession()->getProxy());
}
catch(const Ice::LocalException&)
{
// TODO: XXX
}
RegistryObserverTopicPtr topic = database->getRegistryObserverTopic();
if(topic)
{
topic->unsubscribe(entry->getSession()->getReplicaInfo().observer);
}
database->removeObject(entry->getSession()->getProxy()->ice_getIdentity());
Ice::ObjectPrx clientProxy = getClientProxy();
Ice::Identity id;
id.category = _instanceName;
id.name = "Query";
database->updateObject(clientProxy->ice_identity(id));
if(_traceLevels && _traceLevels->replica > 0)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->replicaCat);
out << "replica `" << name << "' down";
}
}
void
ReplicaCache::nodeAdded(const NodePrx& node)
{
IceStorm::QoS qos;
qos["reliability"] = "twoway ordered";
try
{
_topic->subscribe(qos, node);
}
catch(const Ice::LocalException&)
{
// TODO: XXX
}
}
void
ReplicaCache::nodeRemoved(const NodePrx& node)
{
try
{
_topic->unsubscribe(node);
}
catch(const Ice::ConnectionRefusedException&)
{
// The replica is being shutdown.
}
catch(const Ice::LocalException&)
{
// TODO: XXX
}
}
InternalRegistryPrxSeq
ReplicaCache::getAll() const
{
Lock sync(*this);
InternalRegistryPrxSeq replicas;
replicas.reserve(_entries.size());
for(map<string, ReplicaEntryPtr>::const_iterator p = _entries.begin(); p != _entries.end(); ++p)
{
replicas.push_back(p->second->getSession()->getProxy());
}
return replicas;
}
Ice::ObjectPrx
ReplicaCache::getClientProxy() const
{
Ice::EndpointSeq endpoints;
Ice::EndpointSeq endpts = _clientProxy->ice_getEndpoints();
endpoints.insert(endpoints.end(), endpts.begin(), endpts.end());
for(map<string, ReplicaEntryPtr>::const_iterator p = _entries.begin(); p != _entries.end(); ++p)
{
endpts = p->second->getSession()->getReplicaInfo().clientProxy->ice_getEndpoints();
endpoints.insert(endpoints.end(), endpts.begin(), endpts.end());
}
return _clientProxy->ice_endpoints(endpoints);
}
Ice::ObjectPrx
ReplicaCache::getServerProxy() const
{
Ice::EndpointSeq endpoints;
Ice::EndpointSeq endpts = _serverProxy->ice_getEndpoints();
endpoints.insert(endpoints.end(), endpts.begin(), endpts.end());
for(map<string, ReplicaEntryPtr>::const_iterator p = _entries.begin(); p != _entries.end(); ++p)
{
endpts = p->second->getSession()->getReplicaInfo().serverProxy->ice_getEndpoints();
endpoints.insert(endpoints.end(), endpts.begin(), endpts.end());
}
return _serverProxy->ice_endpoints(endpoints);
}
ReplicaEntry::ReplicaEntry(const std::string& name, const ReplicaSessionIPtr& session) :
_name(name),
_session(session)
{
}
const ReplicaSessionIPtr&
ReplicaEntry::getSession() const
{
return _session;
}
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