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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.
//
// **********************************************************************
#ifndef ICE_GRID_ADAPTERCACHE_H
#define ICE_GRID_ADAPTERCACHE_H
#include <IceUtil/Mutex.h>
#include <IceUtil/Shared.h>
#include <IceGrid/Cache.h>
#include <IceGrid/Query.h>
#include <IceGrid/Internal.h>
#include <IceGrid/Allocatable.h>
namespace IceGrid
{
class AdapterCache;
class ServerEntry;
typedef IceUtil::Handle<ServerEntry> ServerEntryPtr;
typedef std::vector<ServerEntryPtr> ServerEntrySeq;
class AdapterEntry;
typedef IceUtil::Handle<AdapterEntry> AdapterEntryPtr;
class AdapterEntry : public Allocatable, public IceUtil::Mutex
{
public:
AdapterEntry(Cache<std::string, AdapterEntry>&, const std::string&);
virtual std::vector<std::pair<std::string, AdapterPrx> > getProxies(bool, int&, const SessionIPtr&)
{
assert(false);
}
virtual float getLeastLoadedNodeLoad(LoadSample) const { assert(false); }
virtual std::string getApplication() const { assert(false); }
virtual bool canRemove();
protected:
AdapterCache& _cache;
const std::string _id;
};
typedef IceUtil::Handle<AdapterEntry> AdapterEntryPtr;
class ServerAdapterEntry : public AdapterEntry
{
public:
ServerAdapterEntry(Cache<std::string, AdapterEntry>&, const std::string&);
virtual std::vector<std::pair<std::string, AdapterPrx> > getProxies(bool, int&, const SessionIPtr&);
virtual float getLeastLoadedNodeLoad(LoadSample) const;
virtual std::string getApplication() const;
void set(const ServerEntryPtr&, const std::string&, bool);
void destroy();
AdapterPrx getProxy(const std::string& = std::string()) const;
virtual void allocated(const SessionIPtr&);
virtual void released(const SessionIPtr&);
private:
ServerEntryPtr getServer() const;
ServerEntryPtr _server;
std::string _replicaGroupId;
};
typedef IceUtil::Handle<ServerAdapterEntry> ServerAdapterEntryPtr;
class ReplicaGroupEntry : public AdapterEntry
{
public:
ReplicaGroupEntry(Cache<std::string, AdapterEntry>&, const std::string&);
virtual std::vector<std::pair<std::string, AdapterPrx> > getProxies(bool, int&, const SessionIPtr&);
virtual float getLeastLoadedNodeLoad(LoadSample) const;
virtual std::string getApplication() const;
void set(const std::string&, const LoadBalancingPolicyPtr&);
void addReplica(const std::string&, const ServerAdapterEntryPtr&);
void removeReplica(const std::string&);
typedef std::vector<std::pair<std::string, ServerAdapterEntryPtr> > ReplicaSeq;
private:
LoadBalancingPolicyPtr _loadBalancing;
int _loadBalancingNReplicas;
LoadSample _loadSample;
std::string _application;
ReplicaSeq _replicas;
int _lastReplica;
static std::pointer_to_unary_function<int, int> _rand;
};
typedef IceUtil::Handle<ReplicaGroupEntry> ReplicaGroupEntryPtr;
class AdapterCache : public CacheByString<AdapterEntry>
{
public:
AdapterEntryPtr get(const std::string&) const;
ServerAdapterEntryPtr getServerAdapter(const std::string&, bool = false) const;
ReplicaGroupEntryPtr getReplicaGroup(const std::string&, bool = false) const;
protected:
virtual AdapterEntryPtr addImpl(const std::string&, const AdapterEntryPtr&);
virtual AdapterEntryPtr removeImpl(const std::string&);
};
};
#endif
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