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Quick RTCORBA - Client - Server - HOWTO (ACE/TAO)
=================================================
1.) define Interface (hosted Objects)
create file interface.idl:
----// interface.idl //----------------------------------------
module benchmark{
exception invalidRequest{};
struct dataStruct{
string data;
short valPort1;
short valPort2;
short valPort3;
};
interface Put{
void connect() raises(invalidRequest);
void onePort(in short portNo, in short value) raises(invalidRequest);
void allPorts( in short valPort1,
in short valPort2,
in short valPort3) raises(invalidRequest);
void dataAndPorts( in dataStruct data) raises(invalidRequest);
};
};
----------------------------------------------------------------------
2.) generate implementation files
tao_idl -GI interface.idl
3.) rename implementation files
mv interfaceI.h interface_i.h
mv interfaceI.cpp interface_i.cpp
4.) change interfaceI.h include in interface_i.cpp in interface_i.h
5.) implement functionality of hosted objects into interface_i.cpp
6.) write RTCORBA Server
----// Server.cpp //----------------------------------------------------
include "interface_i.h"
#include "orbsvcs/CosNamingC.h"
#include <tao/RTCORBA/RTCORBA.h>
#include <iostream>
int main(int argc, char* argv[]){
try{
// initialize ORB
CORBA::ORB_var orb = CORBA::ORB_init(argc, argv, "ServerORB");
std::cout<<"ORB initialized"<<std::endl;
// access RT Extensions
CORBA::Object_var rtorb = orb->resolve_initial_references("RTORB");
RTCORBA::RTORB_var rtORB = RTCORBA::RTORB::_narrow(rtorb);
std::cout<<"RT Extensions OK"<<std::endl;
// obtain rootPOA
CORBA::Object_var poa = orb->resolve_initial_references("RootPOA");
PortableServer::POA_var rootPOA = PortableServer::POA::_narrow(poa.in());
// activate POA Manager
PortableServer::POAManager_var poaManager = rootPOA->the_POAManager();
poaManager->activate();
std::cout<<"rootPOA OK"<<std::endl;
// create Policy
CORBA::PolicyList benchPolicy(1);
benchPolicy.length(1);
benchPolicy[0] = rtORB->create_priority_model_policy(RTCORBA::CLIENT_PROPAGATED, 9879 /*Priority*/ );
// create ObjectAdapter, assign Policy
PortableServer::POA_var benchPOA = rootPOA->create_POA("benchPOA", poaManager.in(), benchPolicy);
std::cout<<"Policy assigned"<<std::endl;
// create the servant
benchmark_Put_i bench_i;
// activate servant
PortableServer::ObjectId_var objectID = benchPOA->activate_object(&bench_i);
CORBA::Object_var benchObj = benchPOA->id_to_reference(objectID.in());
CORBA::String_var ior = orb->object_to_string(benchObj.in());
std::cout<<"Servant activated"<<std::endl;
// NameService
CORBA::Object_var namingObject = orb->resolve_initial_references("NameService");
CosNaming::NamingContext_var namingContext = CosNaming::NamingContext::_narrow(namingObject.in());
CosNaming::Name name(1);
name.length(1);
name[0].id = CORBA::string_dup("Receiver");
namingContext->bind(name, benchObj.in());
std::cout<<"Bound Receiver to NameService"<<std::endl;
// start ORB
orb->run();
std::cout<<"ORB ready"<<std::endl;
//destroy ORB
rootPOA->destroy(1,1);
orb->destroy();
}catch(CORBA::Exception &any){
std::cout<<"Exception: "<<any<<std::endl;
}
return 0;
}
---------------------------------------------------------------------------
7.) write RTCORBA Client
---// Client.cpp //--------------------------------------------------------
#include <iostream>
#include "interfaceC.h"
#include "orbsvcs/CosNamingC.h"
#include <tao/RTCORBA/RTCORBA.h>
#include "cpx.h"
benchmark::Put_var put;
CPX cpx;
int main(int argc, char* argv[]){
try{
// initialize ORB
CORBA::ORB_var orb = CORBA::ORB_init(argc, argv, "ClientORB");
std::cout<<"ORB ok"<<std::endl;
// get RTORB
CORBA::Object_var rtorb = orb->resolve_initial_references("RTORB");
RTCORBA::RTORB_var rtORB = RTCORBA::RTORB::_narrow(rtorb.in());
std::cout<<"RTORB ok"<<std::endl;
// NamingService
CORBA::Object_var namingObject = orb->resolve_initial_references("NameService");
CosNaming::NamingContext_var namingContext = CosNaming::NamingContext::_narrow(namingObject.in());
std::cout<<"NamingService ok"<<std::endl;
CosNaming::Name name(1);
name.length(1);
name[0].id = CORBA::string_dup("Receiver");
// receive Object
CORBA::Object_var benchObj = namingContext->resolve(name);
put = benchmark::Put::_narrow(benchObj.in());
std::cout<<"TransferOjekt ok"<<std::endl;
// rtCurrent set priority
CORBA::Object_var rtCurrentObj = orb->resolve_initial_references("RTCurrent");
RTCORBA::Current_var rtCurrent = RTCORBA::Current::_narrow(rtCurrentObj.in());
rtCurrent->the_priority(RTCORBA::maxPriority);
std::cout<<"PriorityChange ok"<<std::endl;
// Input auf Interface schreiben (use Object hosted by Server)
put->connect();
put->allPorts(0, 0, 0);
// destroy ORB
orb->destroy();
}catch(CORBA::Exception &any){
std::cout<<"Exception occured: "<<any<<std::endl;
}
return 0;
}
--------------------------------------------------------------------------
8.) define MakeProjectCreator file
---// project.mpc //------------------------------------------------------
project(Server): rt_server, naming {
requires += exceptions
Source_Files {
cpx.cpp
interfaceI.cpp
Server.cpp
}
Header_Files {
cpx.h
}
}
project(Client): rt_client, naming {
requires += exceptions
Source_Files {
cpx.cpp
interfaceC.cpp
Client.cpp
}
Header_Files {
cpx.h
}
}
----------------------------------------------------------------------------
9.) generate GNUMakefiles
mpc.pl -type gnuace project.mpc
10.) build Client & Server
make -f GNUMakefile_Client && make -f GNUMakefile_Server
11.) start NamingService
$ACE_ROOT/TAO/orbsvcs/Naming_Service/Naming_Service -m1 orbendpoint localhost:1234
12.) start Server
./Server
13.) start Client
./Client
|
