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//=============================================================================
/**
* @file Broadcaster_i.cpp
*
* Implementation of the Broadcaster_i class. This class is the servant
* object for the chat server.
*
* @author Pradeep Gore <pradeep@cs.wustl.edu>
*/
//=============================================================================
#include "Broadcaster_i.h"
bool
Broadcaster_i::Receiver_Data::operator == (const Broadcaster_i::Receiver_Data &receiver_data) const
{
// The <_is_equivalent> function checks if the _var and _ptr objects
// are the same. NOTE: this call might not behave well on other
// ORBs since <_is_equivalent> isn't guaranteed to differentiate
// object references.
return
this->receiver_->_is_equivalent (receiver_data.receiver_.in ())
&& this->nickname_ == receiver_data.nickname_;
}
void
Broadcaster_i::add (Receiver_ptr receiver,
const char *nickname)
{
Broadcaster_i::Receiver_Data receiver_data;
// Store the client information.
receiver_data.receiver_ = Receiver::_duplicate (receiver);
receiver_data.nickname_ = nickname;
// Insert the Receiver reference to the set
if (receiver_set_.insert (receiver_data) == -1)
throw Broadcaster::CannotAdd ("failed to add to the receiver set\n");
// Tell everyone which person just joined the chat.
ACE_CString broadcast_string =
ACE_CString ("**** ")
+ ACE_CString (nickname)
+ ACE_CString (" has joined the chat ****\n");
try
{
this->broadcast (broadcast_string.fast_rep ());
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Broadcaster_i::broadcast failed.\t\n");
}
}
void
Broadcaster_i::remove (Receiver_ptr receiver)
{
Broadcaster_i::Receiver_Data receiver_data_to_remove;
// Go through the list of <Receiver_Data> to find which registered client
// wants to be removed.
for (RECEIVER_SET_ITERATOR iter = this->receiver_set_.begin ();
iter != this->receiver_set_.end ();
iter++)
{
// The <_is_equivalent> function checks if the _var and _ptr objects
// are the same. NOTE: this call might not behave well on other
// ORBs since <_is_equivalent> isn't guaranteed to differentiate
// object references.
if ((*iter).receiver_.in ()->_is_equivalent (receiver) == 1)
{
receiver_data_to_remove = *iter;
break;
}
}
// Remove the reference from our list.
if (this->receiver_set_.remove (receiver_data_to_remove) == -1)
throw Broadcaster::CannotRemove ("failed to remove from receiver set\n");
// Tell everyone, which person left the chat.
ACE_CString broadcast_string = "**** "
+ receiver_data_to_remove.nickname_
+ " left the chat"
+ " ****\n";
this->broadcast (broadcast_string.fast_rep ());
}
void
Broadcaster_i::say (Receiver_ptr receiver,
const char *text)
{
try
{
ACE_CString sender_nickname ("Sender Unknown");
// Find the nickname for this receiver.
for (RECEIVER_SET_ITERATOR iter = this->receiver_set_.begin ();
iter != this->receiver_set_.end ();
iter++)
{
// The <_is_equivalent> function checks if the _var and
// _ptr objects are the same. NOTE: this call might not
// behave well on other ORBs since <_is_equivalent> isn't
// guaranteed to differentiate object references.
if ((*iter).receiver_.in ()->_is_equivalent (receiver) == 1)
sender_nickname = (*iter).nickname_;
}
// Broadcast the message to all registered clients
ACE_CString broadcast_string ("[" + sender_nickname + "] " + text);
this->broadcast (broadcast_string.fast_rep ());
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Broadcaster_i::say\t\n");
}
}
void
Broadcaster_i::broadcast (const char *text)
{
// Broadcast the message to all registered clients.
for (RECEIVER_SET_ITERATOR iter = this->receiver_set_.begin ();
iter != this->receiver_set_.end ();
iter++)
{
try
{
(*iter).receiver_->message (text);
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Failed to send a message\n");
}
}
}
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