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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/Ice.h>
#include <IceGrid/NodeSessionI.h>
#include <IceGrid/Database.h>
#include <IceGrid/Topics.h>
using namespace std;
using namespace IceGrid;
NodeSessionI::NodeSessionI(const DatabasePtr& database,
const NodePrx& node,
const NodeInfo& info,
int timeout) :
_database(database),
_traceLevels(database->getTraceLevels()),
_node(NodePrx::uncheckedCast(node->ice_timeout(timeout * 1000))),
_info(info),
_timeout(timeout),
_timestamp(IceUtil::Time::now()),
_destroy(false)
{
__setNoDelete(true);
try
{
_database->getNode(info.name, true)->setSession(this);
ObjectInfo info;
info.type = Node::ice_staticId();
info.proxy = _node;
_database->addInternalObject(info, true); // Add or update previous node proxy.
Ice::ObjectPrx prx = _database->getInternalAdapter()->addWithUUID(this)->ice_timeout(timeout * 1000);
_proxy = NodeSessionPrx::uncheckedCast(prx);
}
catch(...)
{
__setNoDelete(false);
throw;
}
__setNoDelete(false);
}
void
NodeSessionI::keepAlive(const LoadInfo& load, const Ice::Current& current)
{
Lock sync(*this);
if(_destroy)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__);
}
_timestamp = IceUtil::Time::now();
_load = load;
if(_traceLevels->node > 2)
{
Ice::Trace out(_traceLevels->logger, _traceLevels->nodeCat);
out << "node `" << _info.name << "' keep alive ";
out << "(load = " << _load.avg1 << ", " << _load.avg5 << ", " << _load.avg15 << ")";
}
}
void
NodeSessionI::setReplicaObserver(const ReplicaObserverPrx& observer, const Ice::Current&)
{
Lock sync(*this);
if(_destroy)
{
return;
}
else if(_replicaObserver) // This might happen on activation of the node.
{
assert(_replicaObserver == observer);
return;
}
_replicaObserver = observer;
_database->getReplicaCache().subscribe(observer);
}
int
NodeSessionI::getTimeout(const Ice::Current& current) const
{
return _timeout;
}
NodeObserverPrx
NodeSessionI::getObserver(const Ice::Current& current) const
{
return NodeObserverTopicPtr::dynamicCast(_database->getObserverTopic(NodeObserverTopicName))->getPublisher();
}
void
NodeSessionI::loadServers_async(const AMD_NodeSession_loadServersPtr& amdCB, const Ice::Current& current) const
{
//
// No need to wait for the servers to be loaded. If we were
// waiting, we would have to figure out an appropriate timeout for
// calling this method since each load() call might take time to
// complete.
//
amdCB->ice_response();
//
// Get the server proxies to load them on the node.
//
ServerEntrySeq servers = _database->getNode(_info.name)->getServers();
for_each(servers.begin(), servers.end(), IceUtil::voidMemFun(&ServerEntry::sync));
}
Ice::StringSeq
NodeSessionI::getServers(const Ice::Current& current) const
{
ServerEntrySeq servers = _database->getNode(_info.name)->getServers();
Ice::StringSeq names;
for(ServerEntrySeq::const_iterator p = servers.begin(); p != servers.end(); ++p)
{
names.push_back((*p)->getId());
}
return names;
}
void
NodeSessionI::waitForApplicationUpdate_async(const AMD_NodeSession_waitForApplicationUpdatePtr& cb,
const std::string& application,
int revision,
const Ice::Current&) const
{
_database->waitForApplicationUpdate(cb, application, revision);
}
void
NodeSessionI::destroy(const Ice::Current&)
{
destroyImpl(false);
}
IceUtil::Time
NodeSessionI::timestamp() const
{
Lock sync(*this);
if(_destroy)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__);
}
return _timestamp;
}
void
NodeSessionI::shutdown()
{
destroyImpl(true);
}
const NodePrx&
NodeSessionI::getNode() const
{
return _node;
}
const NodeInfo&
NodeSessionI::getInfo() const
{
return _info;
}
const LoadInfo&
NodeSessionI::getLoadInfo() const
{
Lock sync(*this);
return _load;
}
NodeSessionPrx
NodeSessionI::getProxy() const
{
return _proxy;
}
bool
NodeSessionI::isDestroyed() const
{
Lock sync(*this);
return _destroy;
}
void
NodeSessionI::destroyImpl(bool shutdown)
{
{
Lock sync(*this);
if(_destroy)
{
throw Ice::ObjectNotExistException(__FILE__, __LINE__);
}
_destroy = true;
}
ServerEntrySeq servers = _database->getNode(_info.name)->getServers();
for_each(servers.begin(), servers.end(), IceUtil::voidMemFun(&ServerEntry::unsync));
//
// If the registry isn't being shutdown we remove the node
// internal proxy from the database.
//
if(!shutdown)
{
_database->removeInternalObject(_node->ice_getIdentity());
}
//
// Next we notify the observer.
//
NodeObserverTopicPtr::dynamicCast(_database->getObserverTopic(NodeObserverTopicName))->nodeDown(_info.name);
//
// Unsubscribe the node replica observer.
//
if(_replicaObserver)
{
_database->getReplicaCache().unsubscribe(_replicaObserver);
_replicaObserver = 0;
}
//
// Finally, we clear the session, this must be done last. As soon
// as the node entry session is set to 0 another session might be
// created.
//
_database->getNode(_info.name)->setSession(0);
if(!shutdown)
{
try
{
_database->getInternalAdapter()->remove(_proxy->ice_getIdentity());
}
catch(const Ice::ObjectAdapterDeactivatedException&)
{
}
}
}
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