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// **********************************************************************
//
// Copyright (c) 2003-2010 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 <Glacier2/RoutingTable.h>
using namespace std;
using namespace Ice;
using namespace Glacier2;
Glacier2::RoutingTable::RoutingTable(const CommunicatorPtr& communicator, const ProxyVerifierPtr& verifier) :
_communicator(communicator),
_traceLevel(_communicator->getProperties()->getPropertyAsInt("Glacier2.Trace.RoutingTable")),
_maxSize(_communicator->getProperties()->getPropertyAsIntWithDefault("Glacier2.RoutingTable.MaxSize", 1000)),
_verifier(verifier)
{
}
ObjectProxySeq
Glacier2::RoutingTable::add(const ObjectProxySeq& unfiltered, const Ice::Current& current)
{
IceUtil::Mutex::Lock sync(*this);
//
// We 'pre-scan' the list, applying our validation rules. The
// ensures that our state is not modified if this operation results
// in a rejection.
//
ObjectProxySeq proxies;
ObjectProxySeq::const_iterator prx;
for(prx = unfiltered.begin(); prx != unfiltered.end(); ++prx)
{
if(!*prx) // We ignore null proxies.
{
continue;
}
if(!_verifier->verify(*prx))
{
current.con->close(true);
throw ObjectNotExistException(__FILE__, __LINE__);
}
ObjectPrx proxy = (*prx)->ice_twoway()->ice_secure(false)->ice_facet(""); // We add proxies in default form.
proxies.push_back(proxy);
}
ObjectProxySeq evictedProxies;
for(prx = proxies.begin(); prx != proxies.end(); ++prx)
{
ObjectPrx proxy = *prx;
EvictorMap::iterator p = _map.find(proxy->ice_getIdentity());
if(p == _map.end())
{
if(_traceLevel == 1 || _traceLevel >= 3)
{
Trace out(_communicator->getLogger(), "Glacier2");
out << "adding proxy to routing table:\n" << _communicator->proxyToString(proxy);
}
EvictorEntryPtr entry = new EvictorEntry;
p = _map.insert(_map.begin(), pair<const Identity, EvictorEntryPtr>(proxy->ice_getIdentity(), entry));
EvictorQueue::iterator q = _queue.insert(_queue.end(), p);
entry->proxy = proxy;
entry->pos = q;
}
else
{
if(_traceLevel == 1 || _traceLevel >= 3)
{
Trace out(_communicator->getLogger(), "Glacier2");
out << "proxy already in routing table:\n" << _communicator->proxyToString(proxy);
}
EvictorEntryPtr entry = p->second;
_queue.erase(entry->pos);
EvictorQueue::iterator q = _queue.insert(_queue.end(), p);
entry->pos = q;
}
while(static_cast<int>(_map.size()) > _maxSize)
{
p = _queue.front();
if(_traceLevel >= 2)
{
Trace out(_communicator->getLogger(), "Glacier2");
out << "evicting proxy from routing table:\n" << _communicator->proxyToString(p->second->proxy);
}
evictedProxies.push_back(p->second->proxy);
_map.erase(p);
_queue.pop_front();
}
}
return evictedProxies;
}
ObjectPrx
Glacier2::RoutingTable::get(const Identity& ident)
{
if(ident.name.empty())
{
return 0;
}
IceUtil::Mutex::Lock sync(*this);
EvictorMap::iterator p = _map.find(ident);
if(p == _map.end())
{
return 0;
}
else
{
EvictorEntryPtr entry = p->second;
_queue.erase(entry->pos);
EvictorQueue::iterator q = _queue.insert(_queue.end(), p);
entry->pos = q;
return entry->proxy;
}
}
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