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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
#ifndef ICE_GRID_ADAPTERCACHE_H
#define ICE_GRID_ADAPTERCACHE_H
#include <IceGrid/Cache.h>
#include <IceGrid/Registry.h>
#include <IceGrid/Internal.h>
#include <optional>
#include <set>
namespace IceGrid
{
class AdapterCache;
class AdapterEntry;
class ServerAdapterEntry;
class ServerEntry;
class SynchronizationCallback;
using ServerEntrySeq = std::vector<std::shared_ptr<ServerEntry>>;
struct LocatorAdapterInfo
{
std::string id;
std::shared_ptr<AdapterPrx> proxy;
std::chrono::seconds activationTimeout;
std::chrono::seconds deactivationTimeout;
};
using LocatorAdapterInfoSeq = std::vector<LocatorAdapterInfo>;
class GetAdapterInfoResult
{
public:
void add(const ServerAdapterEntry*);
AdapterInfoSeq get();
private:
AdapterInfoSeq _adapters;
std::vector<std::optional<std::future<std::shared_ptr<Ice::ObjectPrx>>>> _results;
};
class AdapterEntry
{
public:
AdapterEntry(AdapterCache&, const std::string&, const std::string&);
virtual bool addSyncCallback(const std::shared_ptr<SynchronizationCallback>&, const std::set<std::string>&) = 0;
virtual void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, std::string&,
const std::set<std::string>&) = 0;
virtual float getLeastLoadedNodeLoad(LoadSample) const = 0;
virtual AdapterInfoSeq getAdapterInfoNoEndpoints() const = 0;
virtual std::shared_ptr<GetAdapterInfoResult> getAdapterInfoAsync() const = 0;
virtual std::shared_ptr<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;
std::string _application;
};
class ServerAdapterEntry final : public AdapterEntry
{
public:
ServerAdapterEntry(AdapterCache&, const std::string&, const std::string&, const std::string&, int,
const std::shared_ptr<ServerEntry>&);
bool addSyncCallback(const std::shared_ptr<SynchronizationCallback>&, const std::set<std::string>&) override;
void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, std::string&,
const std::set<std::string>&) override;
float getLeastLoadedNodeLoad(LoadSample) const override;
AdapterInfoSeq getAdapterInfoNoEndpoints() const override;
std::shared_ptr<GetAdapterInfoResult> getAdapterInfoAsync() const override;
std::shared_ptr<AdapterPrx> getProxy(const std::string&, bool) const override;
void getLocatorAdapterInfo(LocatorAdapterInfoSeq&) const;
const std::string& getReplicaGroupId() const { return _replicaGroupId; }
int getPriority() const;
std::string getServerId() const;
std::string getNodeName() const;
private:
const std::string _replicaGroupId;
const int _priority;
const std::shared_ptr<ServerEntry> _server;
};
class ReplicaGroupEntry final : public AdapterEntry
{
public:
ReplicaGroupEntry(AdapterCache&, const std::string&, const std::string&, const std::shared_ptr<LoadBalancingPolicy>&,
const std::string&);
virtual bool addSyncCallback(const std::shared_ptr<SynchronizationCallback>&, const std::set<std::string>&);
virtual void getLocatorAdapterInfo(LocatorAdapterInfoSeq&, int&, bool&, bool&, std::string&,
const std::set<std::string>&);
virtual float getLeastLoadedNodeLoad(LoadSample) const;
virtual AdapterInfoSeq getAdapterInfoNoEndpoints() const;
virtual std::shared_ptr<GetAdapterInfoResult> getAdapterInfoAsync() const;
virtual std::shared_ptr<AdapterPrx> getProxy(const std::string&, bool) const { return nullptr; }
void addReplica(const std::string&, const std::shared_ptr<ServerAdapterEntry>&);
bool removeReplica(const std::string&);
void update(const std::string&, const std::shared_ptr<LoadBalancingPolicy>&, const std::string&);
bool hasAdaptersFromOtherApplications() const;
const std::string& getFilter() const { return _filter; }
private:
std::shared_ptr<LoadBalancingPolicy> _loadBalancing;
int _loadBalancingNReplicas;
LoadSample _loadSample;
std::string _filter;
std::vector<std::shared_ptr<ServerAdapterEntry>> _replicas;
int _lastReplica;
bool _requestInProgress;
mutable std::mutex _mutex;
std::condition_variable _condVar;
};
class AdapterCache : public CacheByString<AdapterEntry>
{
public:
AdapterCache(const std::shared_ptr<Ice::Communicator>&);
void addServerAdapter(const AdapterDescriptor&, const std::shared_ptr<ServerEntry>&, const std::string&);
void addReplicaGroup(const ReplicaGroupDescriptor&, const std::string&);
std::shared_ptr<AdapterEntry> get(const std::string&) const;
void removeServerAdapter(const std::string&);
void removeReplicaGroup(const std::string&);
protected:
virtual std::shared_ptr<AdapterEntry> addImpl(const std::string&, const std::shared_ptr<AdapterEntry>&);
virtual void removeImpl(const std::string&);
private:
const std::shared_ptr<Ice::Communicator> _communicator;
};
};
#endif
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