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/*=========================================================================
Program: ParaView
Module: vtkSICollaborationManager.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkSICollaborationManager.h"
#include "vtkObjectFactory.h"
#include "vtkSMMessage.h"
#include "vtkPVSession.h"
#include "vtkPVSessionServer.h"
#include "vtkPVMultiClientsInformation.h"
#include "vtkReservedRemoteObjectIds.h"
#include "vtkProcessModule.h"
#include "vtkMultiProcessController.h"
#include "vtkCompositeMultiProcessController.h"
#include "vtkCommand.h"
#include <assert.h>
#include <map>
#include <vtkNew.h>
#include <vtkWeakPointer.h>
#include <string>
#include <sstream>
//****************************************************************************
// Internal class
//****************************************************************************
class vtkSICollaborationManager::vtkInternal : public vtkCommand
{
public:
static vtkInternal* New(vtkSICollaborationManager* owner)
{
return new vtkInternal(owner);
}
vtkInternal(vtkSICollaborationManager* owner)
{
this->Owner = owner;
this->DisableBroadcast = false;
this->ServerState.set_location(vtkPVSession::DATA_SERVER_ROOT);
this->ServerState.set_global_id(vtkReservedRemoteObjectIds::RESERVED_COLLABORATION_COMMUNICATOR_ID);
this->ServerState.SetExtension(DefinitionHeader::client_class, "vtkSMCollaborationManager");
this->ServerState.SetExtension(DefinitionHeader::server_class, "vtkSICollaborationManager");
vtkProcessModule* pm = vtkProcessModule::GetProcessModule();
this->ServerSession = vtkPVSessionServer::SafeDownCast(pm->GetSession());
if(this->ServerSession)
{
this->MultiProcessController =
vtkCompositeMultiProcessController::SafeDownCast(this->ServerSession->GetController(vtkPVSession::CLIENT));
if(this->MultiProcessController)
{
// We don't need to remove it later the vtkCommand take care of that when
// the object get deleted
this->MultiProcessController->AddObserver(
vtkCompositeMultiProcessController::CompositeMultiProcessControllerChanged, this);
}
}
}
bool UpdateUserNamesAndMaster(vtkSMMessage* msg)
{
bool findChanges = false;
this->DisableBroadcast = true;
int size = msg->ExtensionSize(ClientsInformation::user);
for(int i=0; i < size; ++i)
{
const ClientsInformation_ClientInfo* user =
&msg->GetExtension(ClientsInformation::user, i);
int id = user->user();
findChanges = findChanges || (this->UserNames[id] != user->name());
this->UserNames[id] = user->name().c_str();
if(user->is_master() && this->MultiProcessController)
{
findChanges = findChanges ||
(this->MultiProcessController->GetMasterController() != id);
this->MultiProcessController->SetMasterController(id);
}
}
this->DisableBroadcast = false;
return findChanges;
}
vtkSMMessage* BuildServerStateMessage()
{
this->ServerInformations->CopyFromObject(NULL);
int master = this->ServerInformations->GetMasterId();
this->ServerState.ClearExtension(ClientsInformation::user);
this->ServerState.ExtensionSize(ClientsInformation::user); // force the clear to work
for(int i=0; i < this->ServerInformations->GetNumberOfClients(); i++)
{
ClientsInformation_ClientInfo* user =
this->ServerState.AddExtension(ClientsInformation::user);
int userId = this->ServerInformations->GetClientId(i);
user->set_user(userId);
if(this->UserNames[userId].empty())
{
std::ostringstream newUserName;
newUserName << "User " << userId;
this->UserNames[userId] = newUserName.str().c_str();
}
user->set_name(this->UserNames[userId]);
if(userId == master)
{
user->set_is_master(true);
}
}
return &this->ServerState;
}
bool CanBroadcast()
{
return (this->ServerSession && !this->DisableBroadcast);
}
void Execute(vtkObject* vtkNotUsed(caller), unsigned long vtkNotUsed(eventId), void* vtkNotUsed(callData))
{
// A client has disconnect, let's notify the clients left
if(this->Owner)
{
this->Owner->BroadcastToClients(this->BuildServerStateMessage());
}
}
vtkWeakPointer<vtkPVSessionServer> ServerSession;
vtkNew<vtkPVMultiClientsInformation> ServerInformations;
vtkSMMessage ServerState;
std::map<int, std::string> UserNames;
bool DisableBroadcast;
vtkWeakPointer<vtkSICollaborationManager> Owner;
vtkWeakPointer<vtkCompositeMultiProcessController> MultiProcessController;
};
//****************************************************************************
vtkStandardNewMacro(vtkSICollaborationManager);
//----------------------------------------------------------------------------
vtkSICollaborationManager::vtkSICollaborationManager()
{
this->Internal = vtkInternal::New(this);
}
//----------------------------------------------------------------------------
vtkSICollaborationManager::~vtkSICollaborationManager()
{
this->Internal->Delete();
this->Internal = NULL;
}
//----------------------------------------------------------------------------
void vtkSICollaborationManager::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//----------------------------------------------------------------------------
void vtkSICollaborationManager::Push(vtkSMMessage* msg)
{
if(this->Internal->UpdateUserNamesAndMaster(msg) && this->Internal->CanBroadcast() )
{
this->BroadcastToClients(this->Internal->BuildServerStateMessage());
}
}
//----------------------------------------------------------------------------
void vtkSICollaborationManager::Pull(vtkSMMessage* msg)
{
msg->CopyFrom(*this->Internal->BuildServerStateMessage());
}
//----------------------------------------------------------------------------
void vtkSICollaborationManager::BroadcastToClients(vtkSMMessage* msg)
{
this->Internal->ServerSession->NotifyAllClients(msg);
}
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