// Notify_Service.cpp,v 1.33 2002/11/20 21:21:56 irfan Exp

#include "Notify_Service.h"
#include "tao/debug.h"
#include "tao/IORTable/IORTable.h"
#include "ace/Arg_Shifter.h"
#include "ace/Get_Opt.h"
#include "ace/Sched_Params.h"
#include "ace/Synch.h"
#include "ace/Argv_Type_Converter.h"
#include "tao/ORB_Core.h"
#include "ace/Dynamic_Service.h"
#include "../orbsvcs/Notify/Notify_Service.h"

TAO_Notify_Service::TAO_Notify_Service (void)
  : notify_service_ (0),
        bootstrap_ (0),
    use_name_svc_ (1),
    ior_output_file_ (0),
    notify_factory_name_ (NOTIFY_KEY),
    notify_channel_name_ (NOTIFY_CHANNEL_NAME),
    register_event_channel_ (0),
    nthreads_ (0)
{
  // No-Op.
}

TAO_Notify_Service::~TAO_Notify_Service (void)
{
  if (ior_output_file_)
    fclose(ior_output_file_);
}

int
TAO_Notify_Service::init_ORB (int& argc, ACE_TCHAR *argv []
                              ACE_ENV_ARG_DECL)
{
  // Copy command line parameter.
  ACE_Argv_Type_Converter command_line(argc, argv);

  this->orb_ = CORBA::ORB_init (command_line.get_argc(),
                                command_line.get_ASCII_argv(),
                                ""
                                ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  this->notify_service_ = ACE_Dynamic_Service<TAO_NS_Service>::instance (TAO_NS_COS_NOTIFICATION_SERVICE_NAME);

  if (this->notify_service_ == 0)
  {
          ACE_DEBUG ((LM_DEBUG, "Service not found! check conf. file\n"));
      return -1;
  }

  CORBA::Object_var object =
    this->orb_->resolve_initial_references("RootPOA"
                                           ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  if (CORBA::is_nil (object.in ()))
    ACE_ERROR_RETURN ((LM_ERROR,
                       " (%P|%t) Unable to resolve the RootPOA.\n"),
                      -1);

  this->poa_ =
    PortableServer::POA::_narrow (object.in ()
                                  ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  PortableServer::POAManager_var poa_manager =
    this->poa_->the_POAManager (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  poa_manager->activate (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  return 0;
}

int
TAO_Notify_Service::init (int argc, ACE_TCHAR *argv[]
                          ACE_ENV_ARG_DECL)
{
  // initalize the ORB.
  if (this->init_ORB (argc, argv
                      ACE_ENV_ARG_PARAMETER) != 0)
  return -1;

  this->notify_service_->init (this->orb_.in () ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  if (this->parse_args(argc, argv) != 0)
    return -1;

  if (this->nthreads_ > 0) // we have chosen to run in a thread pool.
    {
      ACE_DEBUG ((LM_DEBUG, "Running %d server threads\n", this->nthreads_));
      worker_.orb (this->orb_.in ());

      if (worker_.activate (THR_NEW_LWP | THR_JOINABLE,
                            this->nthreads_) != 0)
        ACE_ERROR_RETURN ((LM_ERROR,
                           "Cannot activate client threads\n"), -1);
    }
  // Check first if the naming service
  if (this->use_name_svc_)
    {
      // Resolve the naming service.
      int ns_ret = this->resolve_naming_service (ACE_ENV_SINGLE_ARG_PARAMETER);
      ACE_CHECK_RETURN (-1);

      if (ns_ret != 0)
        return -1;
    }

  ACE_DEBUG ((LM_DEBUG,
              "\nStarting up the Notification Service...\n"));

  // Activate the factory
  this->notify_factory_ =
    notify_service_->create (this->poa_.in ()
                               ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  ACE_ASSERT (!CORBA::is_nil (this->notify_factory_.in ()));

  // Write IOR to a file, if asked.
  CORBA::String_var str =
    this->orb_->object_to_string (this->notify_factory_.in () ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  if (this->ior_output_file_)
    {
      ACE_OS::fprintf (this->ior_output_file_,
                       "%s",
                       str.in ());
      ACE_OS::fclose (this->ior_output_file_);
      this->ior_output_file_ = 0;
  }
  else if (TAO_debug_level > 0)
    ACE_DEBUG ((LM_DEBUG,
                "The Notification Event Channel Factory IOR is <%s>\n",
                str.in ()));

  // Make it bootstrappable, if asked.
  if (this->bootstrap_)
    {
      CORBA::Object_var table_object =
        this->orb_->resolve_initial_references ("IORTable"
                                                ACE_ENV_ARG_PARAMETER);
      ACE_CHECK_RETURN (-1);

      IORTable::Table_var adapter =
        IORTable::Table::_narrow (table_object.in () ACE_ENV_ARG_PARAMETER);
      ACE_CHECK_RETURN (-1);
      if (CORBA::is_nil (adapter.in ()))
        {
          ACE_ERROR ((LM_ERROR, "Nil IORTable\n"));
        }
      else
        {
          CORBA::String_var ior =
            this->orb_->object_to_string (this->notify_factory_.in ()
                                          ACE_ENV_ARG_PARAMETER);
          ACE_CHECK_RETURN (-1);
          adapter->bind (this->notify_factory_name_.c_str (), ior.in ()
                         ACE_ENV_ARG_PARAMETER);
          ACE_CHECK_RETURN (-1);
        }
    }

  // Register with the Name service, if asked
  if (this->use_name_svc_)
  {
    // Register the Factory
    ACE_ASSERT (!CORBA::is_nil (this->naming_.in ()));


#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
    CosNaming::Name name (1);
    name.length (1);
    name[0].id =
      CORBA::string_dup (this->notify_factory_name_.c_str ());
#else
    CosNaming::Name_var name =
      this->naming_->to_name (this->notify_factory_name_.c_str ()
                              ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */

    ACE_CHECK_RETURN (-1);


#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
    this->naming_->rebind (name,
                           this->notify_factory_.in ()
                           ACE_ENV_ARG_PARAMETER);
#else
    this->naming_->rebind (name.in (),
                           this->notify_factory_.in ()
                           ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */

    ACE_CHECK_RETURN (-1);

    ACE_DEBUG ((LM_DEBUG,
                "Registered with the naming service as: %s\n",
                this->notify_factory_name_.c_str()));

    if (this->register_event_channel_ == 1)
      {
        // create an event channel
        CosNotifyChannelAdmin::ChannelID id;

        CosNotification::QoSProperties initial_qos;
        CosNotification::AdminProperties initial_admin;

        CosNotifyChannelAdmin::EventChannel_var ec =
          this->notify_factory_->create_channel (initial_qos,
                                                 initial_admin,
                                                 id
                                                 ACE_ENV_ARG_PARAMETER);
#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
        name[0].id =
          CORBA::string_dup (this->notify_channel_name_.c_str ());
#else
        name = this->naming_->to_name (
          this->notify_channel_name_.c_str ()
          ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */
        ACE_CHECK_RETURN (-1);


#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
        this->naming_->rebind (name,
                               ec.in ()
                               ACE_ENV_ARG_PARAMETER);
#else
        this->naming_->rebind (name.in (),
                               ec.in ()
                               ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */
        ACE_CHECK_RETURN (-1);

        ACE_DEBUG ((LM_DEBUG,
                    "Registered an Event Channel with the naming service as: %s\n",
                    this->notify_channel_name_.c_str()));

      }
  }

  return 0;
}

int
TAO_Notify_Service::resolve_naming_service (ACE_ENV_SINGLE_ARG_DECL)
{
  CORBA::Object_var naming_obj =
    this->orb_->resolve_initial_references ("NameService"
                                            ACE_ENV_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  // Need to check return value for errors.
  if (CORBA::is_nil (naming_obj.in ()))
    ACE_ERROR_RETURN ((LM_ERROR,
                       " (%P|%t) Unable to resolve the Naming Service.\n"),
                      -1);

  this->naming_ =
#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
    CosNaming::NamingContext::_narrow (naming_obj.in ();
                                       ACE_ENV_ARG_PARAMETER);
#else
    CosNaming::NamingContextExt::_narrow (naming_obj.in ()
                                          ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */
  ACE_CHECK_RETURN (-1);

  return 0;
}

int
TAO_Notify_Service::run (ACE_ENV_SINGLE_ARG_DECL)
{
  if (TAO_debug_level > 0 )
    ACE_DEBUG ((LM_DEBUG, "%s: Running the Notification Service\n",
                __FILE__));

  if (this->nthreads_ > 0)
    {
      worker_.thr_mgr ()->wait ();
      return 0;
    }

  this->orb_->run (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK_RETURN (-1);

  return 0;
}

void
TAO_Notify_Service::shutdown (ACE_ENV_SINGLE_ARG_DECL)
{
  // Deactivate.
  if (this->use_name_svc_)
  {
    // Unbind from the naming service.
#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
    CosNaming::Name name (1);
    name.length (1);
    name[0].id =
      CORBA::string_dup (this->notify_factory_name_.c_str ());
#else
    CosNaming::Name_var name =
      this->naming_->to_name (this->notify_factory_name_.c_str ()
                              ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */

    ACE_CHECK;

#if defined (TAO_NOTIFY_USE_NAMING_CONTEXT)
    this->naming_->unbind (name
                           ACE_ENV_ARG_PARAMETER);
#else
    this->naming_->unbind (name.in ()
                           ACE_ENV_ARG_PARAMETER);
#endif /* TAO_NOTIFY_USE_NAMING_CONTEXT */
    ACE_CHECK;
  }

  // shutdown the ORB.
  if (!CORBA::is_nil (this->orb_.in ()))
    this->orb_->shutdown ();

  /// Release all the _vars as the ORB is gone now.
  notify_factory_._retn ();
  orb_._retn ();
  poa_._retn ();
  naming_._retn ();
}

int
TAO_Notify_Service::parse_args (int argc, ACE_TCHAR *argv[])
{
    ACE_Arg_Shifter arg_shifter (argc, argv);

    const ACE_TCHAR* current_arg = 0;
    while (arg_shifter.is_anything_left ())
    {
      if ((current_arg = arg_shifter.get_the_parameter (ACE_LIB_TEXT("-Factory"))))
        {
          this->notify_factory_name_.set (ACE_TEXT_ALWAYS_CHAR(current_arg));
          arg_shifter.consume_arg ();
        }
      else if (arg_shifter.cur_arg_strncasecmp (ACE_LIB_TEXT("-Boot")) == 0)
        {
          this->bootstrap_ = 1;
          // Make it bootstrappable

          arg_shifter.consume_arg ();
        }
      else if (arg_shifter.cur_arg_strncasecmp (ACE_LIB_TEXT("-NameSvc")) == 0)
        {
          this->use_name_svc_ = 1;
          // Register ref with the name service

          arg_shifter.consume_arg ();
        }
      else if (arg_shifter.cur_arg_strncasecmp (ACE_LIB_TEXT("-NoNameSvc")) == 0)
        {
          this->use_name_svc_ = 0;
          // Don't Register ref with the name service

          arg_shifter.consume_arg ();
        }
      else if ((current_arg = arg_shifter.get_the_parameter (ACE_LIB_TEXT("-IORoutput"))))
        {
          this->ior_output_file_ = ACE_OS::fopen (current_arg, ACE_LIB_TEXT("w"));
          if (this->ior_output_file_ == 0)
            ACE_ERROR_RETURN ((LM_ERROR,
                               "Unable to open %s for writing: %p\n",
                               current_arg), -1);
          arg_shifter.consume_arg ();
        }
      else if ((current_arg = arg_shifter.get_the_parameter (ACE_LIB_TEXT("-ChannelName"))))
        {
          this->notify_channel_name_.set(ACE_TEXT_ALWAYS_CHAR(current_arg));
          arg_shifter.consume_arg ();
        }
      else if (arg_shifter.cur_arg_strncasecmp (ACE_LIB_TEXT("-Channel")) == 0)
        {
          this->register_event_channel_ = 1;
          // Register one EC with naming.

          arg_shifter.consume_arg ();
        }
      else if ((current_arg = arg_shifter.get_the_parameter (ACE_LIB_TEXT("-Notify_TPReactor"))))
        {
          this->nthreads_ = ACE_OS::atoi (current_arg);
          arg_shifter.consume_arg ();
        }
      else if (arg_shifter.cur_arg_strncasecmp (ACE_LIB_TEXT("-?")) == 0)
        {
          ACE_DEBUG((LM_DEBUG,
                     "usage: %s -Factory factory_name "
                     "-Boot -[No]NameSvc "
                     "-IORoutput file_name "
                     "-Channel -ChannelName channel_name\n"
                     "default: %s -Factory NotifyEventChannelFactory "
                     "-NameSvc -Channel NotifyEventChannel\n",
                     "-Notify_TPReactor [threads]\n",
                     argv[0], argv[0]));

          arg_shifter.consume_arg ();

          return -1;
        }
      else
        {
          /*ACE_DEBUG((LM_DEBUG, "Unrecognized command %s",
            arg_shifter.get_current ()));*/
            arg_shifter.ignore_arg ();
        }
    }
    return 0;
}

/*****************************************************************/

Worker::Worker (void)
{
}

void
Worker::orb (CORBA::ORB_ptr orb)
{
  orb_ = CORBA::ORB::_duplicate (orb);
}

int
Worker::svc (void)
{
  ACE_DECLARE_NEW_CORBA_ENV;
  ACE_TRY
    {
      this->orb_->run (ACE_ENV_SINGLE_ARG_PARAMETER);
      ACE_TRY_CHECK;

    }
  ACE_CATCHANY
    {
    }
  ACE_ENDTRY;
  return 0;
}
