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//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
#ifndef ICE_GRID_SERVERCACHE_H
#define ICE_GRID_SERVERCACHE_H
#include <IceGrid/Descriptor.h>
#include <IceGrid/Internal.h>
#include <IceGrid/Registry.h>
#include <IceGrid/Allocatable.h>
#include <IceGrid/Cache.h>
namespace IceGrid
{
class AdapterCache;
class AllocatableObjectCache;
class CheckServerResult;
class NodeCache;
class NodeEntry;
class NodeObserverTopic;
class ObjectCache;
class ServerCache;
class CheckUpdateResult final
{
public:
CheckUpdateResult(const std::string&, const std::string&, bool, bool, std::future<bool>&&);
bool getResult();
const std::string& getServer() { return _server; }
private:
const std::string _server;
const std::string _node;
const bool _remove;
const bool _noRestart;
std::future<bool> _result;
};
class ServerEntry final : public Allocatable
{
public:
ServerEntry(ServerCache&, const std::string&);
void sync();
void waitForSync(std::chrono::seconds);
void waitForSync()
{
waitForSync(std::chrono::seconds(-1));
}
void waitForSyncNoThrow(std::chrono::seconds);
void waitForSyncNoThrow()
{
waitForSyncNoThrow(std::chrono::seconds(-1));
}
void unsync();
bool addSyncCallback(const std::shared_ptr<SynchronizationCallback>&);
void update(const ServerInfo&, bool);
void destroy(bool);
ServerInfo getInfo(bool = false) const;
std::string getId() const;
std::shared_ptr<ServerPrx> getProxy(std::chrono::seconds&, std::chrono::seconds&, std::string&, bool = true,
std::chrono::seconds = std::chrono::seconds(0));
std::shared_ptr<ServerPrx> getProxy(bool = true, std::chrono::seconds = std::chrono::seconds(0));
std::shared_ptr<Ice::ObjectPrx> getAdminProxy();
std::shared_ptr<AdapterPrx> getAdapter(const std::string&, bool);
std::shared_ptr<AdapterPrx> getAdapter(std::chrono::seconds&, std::chrono::seconds&, const std::string&, bool);
float getLoad(LoadSample) const;
bool canRemove();
std::shared_ptr<CheckUpdateResult> checkUpdate(const ServerInfo&, bool);
bool isDestroyed();
void loadCallback(const std::shared_ptr<ServerPrx>&, const AdapterPrxDict&, std::chrono::seconds,
std::chrono::seconds);
void destroyCallback();
void exception(std::exception_ptr);
bool isEnabled() const override;
void allocated(const std::shared_ptr<SessionI>&) override;
void allocatedNoSync(const std::shared_ptr<SessionI>&) override;
void released(const std::shared_ptr<SessionI>&) override;
void releasedNoSync(const std::shared_ptr<SessionI>&) override;
private:
void syncImpl();
void waitImpl(std::chrono::seconds);
void synchronized();
void synchronized(std::exception_ptr);
ServerCache& _cache;
const std::string _id;
std::unique_ptr<ServerInfo> _loaded;
std::unique_ptr<ServerInfo> _load;
std::unique_ptr<ServerInfo> _destroy;
std::shared_ptr<ServerPrx> _proxy;
AdapterPrxDict _adapters;
std::chrono::seconds _activationTimeout;
std::chrono::seconds _deactivationTimeout;
bool _synchronizing;
bool _updated;
std::exception_ptr _exception;
bool _noRestart;
std::vector<std::shared_ptr<SynchronizationCallback>> _callbacks;
std::shared_ptr<SessionI> _allocationSession;
mutable std::mutex _mutex;
std::condition_variable _condVar;
};
using ServerEntrySeq = std::vector<std::shared_ptr<ServerEntry>>;
class ServerCache : public CacheByString<ServerEntry>
{
public:
ServerCache(const std::shared_ptr<Ice::Communicator>&, const std::string&, NodeCache&, AdapterCache&, ObjectCache&,
AllocatableObjectCache&);
std::shared_ptr<ServerEntry> add(const ServerInfo&);
std::shared_ptr<ServerEntry> get(const std::string&) const;
bool has(const std::string&) const;
std::shared_ptr<ServerEntry> remove(const std::string&, bool);
void preUpdate(const ServerInfo&, bool);
std::shared_ptr<ServerEntry> postUpdate(const ServerInfo&, bool);
void clear(const std::string&);
NodeCache& getNodeCache() const { return _nodeCache; }
std::shared_ptr<Ice::Communicator> getCommunicator() const { return _communicator; }
const std::string& getInstanceName() const { return _instanceName; }
const std::shared_ptr<NodeObserverTopic>& getNodeObserverTopic() const { return _nodeObserverTopic; }
void setNodeObserverTopic(const std::shared_ptr<NodeObserverTopic>&);
private:
void addCommunicator(const std::shared_ptr<CommunicatorDescriptor>&, const std::shared_ptr<CommunicatorDescriptor>&,
const std::shared_ptr<ServerEntry>&, const std::string&);
void removeCommunicator(const std::shared_ptr<CommunicatorDescriptor>&,
const std::shared_ptr<CommunicatorDescriptor>&, const std::shared_ptr<ServerEntry>&);
friend struct AddCommunicator;
friend struct RemoveCommunicator;
const std::shared_ptr<Ice::Communicator> _communicator;
const std::string _instanceName;
NodeCache& _nodeCache;
AdapterCache& _adapterCache;
ObjectCache& _objectCache;
AllocatableObjectCache& _allocatableObjectCache;
std::shared_ptr<NodeObserverTopic> _nodeObserverTopic;
mutable std::mutex _mutex;
};
};
#endif
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