TAO/examples/Callback_Quoter/Supplier_i.h

   1 // -*- C++ -*-
   2 //=============================================================================
   3 /**
   4  *  @file    Supplier_i.h
   5  *
   6  *  This class implements a simple CORBA server that keeps
   7  *   on sending stock values to the Notifier.
   8  *
   9  *  @author Kirthika Parameswaran <kirthika@cs.wustl.edu>
  10  */
  11 //=============================================================================
  12
  13 #ifndef SUPPLIER_I_H
  14 #define SUPPLIER_I_H
  15
  16 #include "orbsvcs/Naming/Naming_Client.h"
  17 #include "orbsvcs/CosNamingC.h"
  18 #include "ace/Reactor.h"
  19 #include "ace/Read_Buffer.h"
  20 #include "NotifierC.h"
  21 #include "Supplier_Timer_Handler.h"
  22
  23 #if !defined (ACE_LACKS_PRAGMA_ONCE)
  24 # pragma once
  25 #endif /* ACE_LACKS_PRAGMA_ONCE */
  26
  27 /**
  28  * @class Supplier
  29  *
  30  * @brief Market feed  daemon implementation.
  31  *
  32  * This class feeds stock information to the Callback Quoter
  33  * notifier.
  34  */
  35 class Supplier_Timer_Handler;
  36 class Supplier
  37 {
  38 public:
  39   /// Constructor.
  40   Supplier ();
  41
  42   /// Destructor.
  43   ~Supplier ();
  44
  45   /// Execute  the daemon.
  46   int run ();
  47
  48   /// Initialize the client communication endpoint with Notifier.
  49   int init (int argc, ACE_TCHAR *argv[]);
  50
  51   /// Sends the stock name and its value.
  52   int send_market_status (const char *stock_name,
  53                           long value);
  54
  55 private:
  56   /// The timer handler used to send the market status to the notifier
  57   /// periodically.
  58   Supplier_Timer_Handler *supplier_timer_handler_ {};
  59
  60   /// Remember our orb.
  61   CORBA::ORB_var orb_;
  62
  63   /// Function to read the Notifier IOR from a file.
  64   int read_ior (ACE_TCHAR *filename);
  65
  66   /// Parses the arguments passed on the command line.
  67   int parse_args ();
  68
  69   /// This method initialises the naming service and registers the
  70   /// object with the POA.
  71   int via_naming_service();
  72
  73   /// returns the TAO instance of the singleton Reactor.
  74    ACE_Reactor *reactor_used () const;
  75
  76   /// This method used for getting stock information from a file.
  77   int read_file (ACE_TCHAR *filename);
  78
  79   /// # of arguments on the command line.
  80   int argc_;
  81
  82   /// arguments from command line.
  83   ACE_TCHAR **argv_;
  84
  85   /// IOR of the obj ref of the Notifier.
  86   ACE_TCHAR *ior_;
  87
  88   /// An instance of the name client used for resolving the factory
  89   /// objects.
  90   TAO_Naming_Client naming_services_client_;
  91
  92   /// This variable denotes whether the naming service
  93   /// is used or not.
  94   int use_naming_service_;
  95
  96   /// Notifier object reference.
  97   Notifier_var notifier_;
  98
  99   /// The pointer for accessing the input stream.
 100   FILE  *f_ptr_;
 101
 102   /// Iteration count.
 103   int loop_count_;
 104
 105   /// Time period between two succesive market feeds to the Notifier.
 106   long  period_value_;
 107 };
 108
 109 #endif /*SUPPLIER_I_H */