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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 <IceUtil/Functional.h>
#include <Ice/LoggerUtil.h>
#include <IceGrid/NodeCache.h>
#include <IceGrid/NodeSessionI.h>
#include <IceGrid/ServerCache.h>
using namespace std;
using namespace IceGrid;
NodeCache::NodeCache(int sessionTimeout) : _sessionTimeout(sessionTimeout)
{
}
NodeEntryPtr
NodeCache::get(const string& name, bool create) const
{
Lock sync(*this);
NodeCache& self = const_cast<NodeCache&>(*this);
NodeEntryPtr entry = self.getImpl(name, create);
if(!entry)
{
NodeNotExistException ex;
ex.name = name;
throw ex;
}
return entry;
}
NodeEntry::NodeEntry(Cache<string, NodeEntry>& cache, const std::string& name) :
_cache(cache),
_name(name)
{
}
void
NodeEntry::addDescriptor(const string& application, const NodeDescriptor& descriptor)
{
Lock sync(*this);
_descriptors.insert(make_pair(application, descriptor));
}
void
NodeEntry::removeDescriptor(const string& application)
{
bool remove = false;
{
Lock sync(*this);
_descriptors.erase(application);
remove = _servers.empty() && !_session && _descriptors.empty();
}
if(remove)
{
_cache.remove(_name);
}
}
void
NodeEntry::addServer(const ServerEntryPtr& entry)
{
Lock sync(*this);
_servers.insert(make_pair(entry->getId(), entry));
}
void
NodeEntry::removeServer(const ServerEntryPtr& entry)
{
bool remove = false;
{
Lock sync(*this);
_servers.erase(entry->getId());
remove = _servers.empty() && !_session && _descriptors.empty();
}
if(remove)
{
_cache.remove(_name);
}
}
void
NodeEntry::setSession(const NodeSessionIPtr& session)
{
bool remove = false;
{
Lock sync(*this);
if(session && _session)
{
throw NodeActiveException();
}
_session = session;
remove = _servers.empty() && !_session && _descriptors.empty();
}
if(remove)
{
_cache.remove(_name);
}
if(session)
{
if(_cache.getTraceLevels() && _cache.getTraceLevels()->node > 0)
{
Ice::Trace out(_cache.getTraceLevels()->logger, _cache.getTraceLevels()->nodeCat);
out << "node `" << _name << "' up";
}
ServerEntrySeq entries;
{
Lock sync(*this);
for(map<string, ServerEntryPtr>::const_iterator q = _servers.begin() ; q != _servers.end(); ++q)
{
entries.push_back(q->second);
}
}
for_each(entries.begin(), entries.end(), IceUtil::voidMemFun(&ServerEntry::sync));
}
else
{
if(_cache.getTraceLevels() && _cache.getTraceLevels()->node > 0)
{
Ice::Trace out(_cache.getTraceLevels()->logger, _cache.getTraceLevels()->nodeCat);
out << "node `" << _name << "' down";
}
}
}
NodePrx
NodeEntry::getProxy() const
{
Lock sync(*this);
if(!_session)
{
throw NodeUnreachableException(_name, "the node is not active");
}
return _session->getNode();
}
NodeInfo
NodeEntry::getInfo() const
{
Lock sync(*this);
if(!_session)
{
throw NodeUnreachableException(_name, "the node is not active");
}
return _session->getInfo();
}
Ice::StringSeq
NodeEntry::getServers() const
{
Lock sync(*this);
Ice::StringSeq names;
for(map<string, ServerEntryPtr>::const_iterator p = _servers.begin(); p != _servers.end(); ++p)
{
names.push_back(p->second->getId());
}
return names;
}
LoadInfo
NodeEntry::getLoadInfoAndLoadFactor(const string& application, float& loadFactor) const
{
Lock sync(*this);
if(!_session)
{
throw NodeUnreachableException(_name, "the node is not active");
}
map<string, NodeDescriptor>::const_iterator p = _descriptors.find(application);
loadFactor = -1.0f;
if(p != _descriptors.end())
{
if(!p->second.loadFactor.empty())
{
istringstream is(p->second.loadFactor);
is >> loadFactor;
}
}
if(loadFactor < 0.0f)
{
if(_session->getInfo().os != "Windows")
{
//
// On Unix platforms, we divide the load averages by the
// number of processors. A load of 2 on a dual processor
// machine is the same as a load of 1 on a single process
// machine.
//
loadFactor = 1.0f / _session->getInfo().nProcessors;
}
else
{
//
// On Windows, load1, load5 and load15 are the average of
// the CPU utilization (all CPUs). We don't need to divide
// by the number of CPU.
//
loadFactor = 1.0f;
}
}
return _session->getLoadInfo();
}
bool
NodeEntry::canRemove()
{
Lock sync(*this);
return !_session && _servers.empty();
}
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