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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.
//
// **********************************************************************
#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>
namespace IceGrid
{
class AdapterCache;
class SynchronizationCallback;
typedef IceUtil::Handle<SynchronizationCallback> SynchronizationCallbackPtr;
class ServerEntry;
typedef IceUtil::Handle<ServerEntry> ServerEntryPtr;
typedef std::vector<ServerEntryPtr> ServerEntrySeq;
class AdapterEntry;
typedef IceUtil::Handle<AdapterEntry> AdapterEntryPtr;
struct LocatorAdapterInfo
{
std::string id;
AdapterPrx proxy;
int activationTimeout;
int deactivationTimeout;
};
typedef std::vector<LocatorAdapterInfo> LocatorAdapterInfoSeq;
class AdapterEntry : virtual public IceUtil::Shared
{
public:
AdapterEntry(AdapterCache&, const std::string&, const std::string&);
virtual bool addSyncCallback(const SynchronizationCallbackPtr&, const std::set<std::string>&) = 0;
virtual void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, const std::set<std::string>&) = 0;
virtual float getLeastLoadedNodeLoad(LoadSample) const = 0;
virtual AdapterInfoSeq getAdapterInfo() const = 0;
virtual AdapterPrx getProxy(const std::string&, bool) const = 0;
virtual bool canRemove();
std::string getId() const;
std::string getApplication() const;
protected:
AdapterCache& _cache;
const std::string _id;
const std::string _application;
};
typedef IceUtil::Handle<AdapterEntry> AdapterEntryPtr;
class ServerAdapterEntry : public AdapterEntry
{
public:
ServerAdapterEntry(AdapterCache&, const std::string&, const std::string&, const std::string&, int,
const ServerEntryPtr&);
virtual bool addSyncCallback(const SynchronizationCallbackPtr&, const std::set<std::string>&);
virtual void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, const std::set<std::string>&);
virtual float getLeastLoadedNodeLoad(LoadSample) const;
virtual AdapterInfoSeq getAdapterInfo() const;
virtual AdapterPrx getProxy(const std::string&, bool) const;
const std::string& getReplicaGroupId() const { return _replicaGroupId; }
int getPriority() const;
private:
const std::string _replicaGroupId;
const int _priority;
const ServerEntryPtr _server;
};
typedef IceUtil::Handle<ServerAdapterEntry> ServerAdapterEntryPtr;
class ReplicaGroupEntry : public AdapterEntry, public IceUtil::Mutex
{
public:
ReplicaGroupEntry(AdapterCache&, const std::string&, const std::string&, const LoadBalancingPolicyPtr&);
virtual bool addSyncCallback(const SynchronizationCallbackPtr&, const std::set<std::string>&);
virtual void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, const std::set<std::string>&);
virtual float getLeastLoadedNodeLoad(LoadSample) const;
virtual AdapterInfoSeq getAdapterInfo() const;
virtual AdapterPrx getProxy(const std::string&, bool) const { return 0; }
void addReplica(const std::string&, const ServerAdapterEntryPtr&);
void removeReplica(const std::string&);
void update(const LoadBalancingPolicyPtr&);
bool hasAdaptersFromOtherApplications() const;
private:
LoadBalancingPolicyPtr _loadBalancing;
int _loadBalancingNReplicas;
LoadSample _loadSample;
std::vector<ServerAdapterEntryPtr> _replicas;
int _lastReplica;
};
typedef IceUtil::Handle<ReplicaGroupEntry> ReplicaGroupEntryPtr;
class AdapterCache : public CacheByString<AdapterEntry>
{
public:
AdapterCache(const Ice::CommunicatorPtr&);
void addServerAdapter(const AdapterDescriptor&, const ServerEntryPtr&, const std::string&);
void addReplicaGroup(const ReplicaGroupDescriptor&, const std::string&);
AdapterEntryPtr get(const std::string&) const;
void removeServerAdapter(const std::string&);
void removeReplicaGroup(const std::string&);
protected:
virtual AdapterEntryPtr addImpl(const std::string&, const AdapterEntryPtr&);
virtual void removeImpl(const std::string&);
private:
const Ice::CommunicatorPtr _communicator;
};
};
#endif
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