vtkSMSessionClient.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkSMSessionClient_h
#define vtkSMSessionClient_h

#include "vtkRemotingServerManagerModule.h" //needed for exports
#include "vtkSMSession.h"

class vtkMultiProcessController;
class vtkPVServerInformation;
class vtkSMCollaborationManager;
class vtkSMProxyLocator;
class vtkSMProxyManager;

class VTKREMOTINGSERVERMANAGER_EXPORT vtkSMSessionClient : public vtkSMSession
{
public:
  static vtkSMSessionClient* New();
  vtkTypeMacro(vtkSMSessionClient, vtkSMSession);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  const char* GetURI() override { return this->URI; };


  virtual bool Connect(const char* url, int timeout = 60)
  {
    vtkNetworkAccessManager::ConnectionResult result;
    return this->Connect(url, timeout, nullptr, result);
  }
  virtual bool Connect(const char* url, int timeout, bool (*callback)(),
    vtkNetworkAccessManager::ConnectionResult& connectionResult);

  bool GetIsAlive() override;

  ServerFlags GetProcessRoles() override { return CLIENT; }

  vtkMultiProcessController* GetController(ServerFlags processType) override;

  vtkPVServerInformation* GetServerInformation() override { return this->ServerInformation; }

  void Initialize() override;


  void PushState(vtkSMMessage* msg) override;
  void PullState(vtkSMMessage* message) override;
  void ExecuteStream(vtkTypeUInt32 location, const vtkClientServerStream& stream,
    bool ignore_errors = false) override;
  const vtkClientServerStream& GetLastResult(vtkTypeUInt32 location) override;


  vtkSetMacro(AbortConnect, bool);

  void CloseSession();

  bool GatherInformation(
    vtkTypeUInt32 location, vtkPVInformation* information, vtkTypeUInt32 globalid) override;

  int GetNumberOfProcesses(vtkTypeUInt32 servers) override;

  bool IsMPIInitialized(vtkTypeUInt32 servers) override;

  //---------------------------------------------------------------------------
  // API for Collaboration management
  //---------------------------------------------------------------------------

  // Called before application quit or session disconnection
  // Used to prevent quitting client to delete proxy of a running session.
  void PreDisconnection() override;

  virtual bool IsNotBusy();
  virtual void StartBusyWork();
  virtual void EndBusyWork();

  vtkSMCollaborationManager* GetCollaborationManager() override;


  void PrepareProgressInternal() override;
  void CleanupPendingProgressInternal() override;

  int GetConnectID();

  //---------------------------------------------------------------------------
  // API for GlobalId management
  //---------------------------------------------------------------------------

  vtkTypeUInt32 GetNextGlobalUniqueIdentifier() override;

  vtkTypeUInt32 GetNextChunkGlobalUniqueIdentifier(vtkTypeUInt32 chunkSize) override;

  void OnServerNotificationMessageRMI(void* message, int message_length);

protected:
  vtkSMSessionClient();
  ~vtkSMSessionClient() override;

  void SetRenderServerController(vtkMultiProcessController*);
  void SetDataServerController(vtkMultiProcessController*);

  void SetupDataServerRenderServerConnection();

  void UnRegisterSIObject(vtkSMMessage* msg) override;

  void RegisterSIObject(vtkSMMessage* msg) override;

  vtkTypeUInt32 GetRealLocation(vtkTypeUInt32);

  // Both maybe the same when connected to pvserver.
  vtkMultiProcessController* RenderServerController;
  vtkMultiProcessController* DataServerController;

  vtkPVServerInformation* DataServerInformation;
  vtkPVServerInformation* RenderServerInformation;
  vtkPVServerInformation* ServerInformation;
  vtkClientServerStream* ServerLastInvokeResult;

  vtkSetStringMacro(URI);

  bool AbortConnect;
  char* URI;

  // This flag allow us to disable remote Object deletion in a collaboration
  // context when a client is leaving a visalization session.
  // Typically we don't want this client to broadcast to the other to delete all
  // the proxy because it does not need them anymore as it is leaving...
  bool NoMoreDelete;

  // Field used to communicate with other clients
  vtkSMCollaborationManager* CollaborationCommunicator;

  bool OnWrongTagEvent(vtkObject* caller, unsigned long eventid, void* calldata) override;

  virtual void OnConnectionLost(vtkObject* caller, unsigned long eventid, void* calldata);

private:
  vtkSMSessionClient(const vtkSMSessionClient&) = delete;
  void operator=(const vtkSMSessionClient&) = delete;

  int NotBusy;
  vtkTypeUInt32 LastGlobalID;
  vtkTypeUInt32 LastGlobalIDAvailable;
};

#endif