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callee_dispatched.cpp

This example is part of a series of examples that demonstrate method proxy calls and adapter stubs.This group of examples are:

Here is this example:

/***************************************************************************
* Copyright (C) 2007,2010 by Rick L. Vinyard, Jr. *
* rvinyard@cs.nmsu.edu *
* *
* This file is part of the dbus-cxx library. *
* *
* The dbus-cxx library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* version 3 as published by the Free Software Foundation. *
* *
* The dbus-cxx library is distributed in the hope that it will be *
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty *
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this software. If not see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include <dbus-cxx.h>
#include <iostream>
#include <cmath>
#include <unistd.h>
int main()
{
int ret;
DBus::Connection::pointer conn = dispatcher->create_connection(DBus::BUS_SESSION);
// request a name on the bus
ret = conn->request_name( "dbuscxx.example.calculator.server", DBUS_NAME_FLAG_REPLACE_EXISTING );
if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) return 1;
conn->create_object("/dbuscxx/example/Calculator", reply_to_method_call);
std::cout << "Running" << std::flush;
for (int i=0; i < 10; i++)
{
std::cout << "." << std::flush;
sleep(1);
}
std::cout << std::endl;
return 0;
}
{
double param1, param2, answer=NAN;
// read the arguments
msg >> param1 >> param2;
std::cout << "Method called with " << param1 << ", " << param2 << std::endl;
// figure out what the actual method called was
if ( msg->is_call( "Calculator.Basic", "add" ) ) answer = param1 + param2;
else if ( msg->is_call( "Calculator.Basic", "sub" ) ) answer = param1 - param2;
else if ( msg->is_call( "Calculator.Basic", "mul" ) ) answer = param1 * param2;
else if ( msg->is_call( "Calculator.Basic", "div" ) ) answer = param1 / param2;
if ( not isnan(answer) )
{
// create a reply from the message
reply = msg->create_reply( );
// Was the reply created successfully
if ( not reply ) return DBus::NOT_HANDLED;
// add the arguments to the reply
reply << answer;
// send the reply
conn << reply;
}
return DBus::HANDLED;
}

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