acsexmplClientDynamicComponent.cpp

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/*******************************************************************************
*    ALMA - Atacama Large Millimiter Array
*    (c) European Southern Observatory, 2002
*    Copyright by ESO (in the framework of the ALMA collaboration)
*    and Cosylab 2002, All rights reserved
*
*    This library is free software; you can redistribute it and/or
*    modify it under the terms of the GNU Lesser General Public
*    License as published by the Free Software Foundation; either
*    version 2.1 of the License, or (at your option) any later version.
*
*    This 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
*    Lesser General Public License for more details.
*
*    You should have received a copy of the GNU Lesser General Public
*    License along with this library; if not, write to the Free Software
*    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*
*
* "@(#) $Id: acsexmplClientDynamicComponent.cpp,v 1.9 2007/02/01 05:14:26 cparedes Exp $"
*
* who       when      what
* --------  --------  ----------------------------------------------
* dfugate  2004/01/25  created 
*/



/* @}*/
/* @}*/

#include <maciSimpleClient.h>
#include "acsexmplHelloWorldC.h"

ACE_RCSID(acsexmpl, acsexmpClient, "$Id: acsexmplClientDynamicComponent.cpp,v 1.9 2007/02/01 05:14:26 cparedes Exp $")
using namespace maci;
       
/*******************************************************************************/
int main(int argc, char *argv[])
{
    ComponentInfo_var cInfo;

    // Checks command-line arguments.
    if (argc < 2)
        {
        ACS_SHORT_LOG((LM_INFO, "Usage: %s <container name> <options>", argv[0]));
        return -1;
        }
    else
        {
        ACS_SHORT_LOG((LM_INFO, "Welcome to %s!", argv[0]));
        }
    
    //Creates and initializes the SimpleClient object
    SimpleClient client;
    if (client.init(argc,argv) == 0)
        {
        ACE_DEBUG((LM_DEBUG,"Cannot init client"));
        return -1;
        }
    else
        {
        //Must log into manager before we can really do anything
        client.login();
        }

    try
        {
        //In order for us to obtain a reference to a so-called dynamic component,
        //we must first create an instance of an IDL ComponentSpec structure.  This 
        //structure defines the various specififications for the component and is equivalent
        //to the entries found in $ACS_CDB/MACI/Components/Components.xml.  Specific options
        //for the values can be found in the MACI Specifications document (or maci.idl if 
        //you prefer).
        ComponentSpec_var cSpec = new ComponentSpec();    //use _var type for automatic memory management
        cSpec->component_name = CORBA::string_dup(COMPONENT_SPEC_ANY);    //name of the component
        cSpec->component_type = CORBA::string_dup("IDL:alma/acsexmplHelloWorld/HelloWorld:1.0");    //IDL interface implemented by the component
        cSpec->component_code = CORBA::string_dup("acsexmplHelloWorldImpl");     //executable code for the component (e.g. DLL)
        cSpec->container_name = CORBA::string_dup(argv[1]);     //container where the component is deployed

        //The IDL ComponentInfo structure returned by the get_dynamic_component method
        //contains tons of information about the newly created component and the most important
        //field is "reference" (i.e., the unnarrowed dynamic component).
        cInfo  = client.manager()->get_dynamic_component(client.handle(),    //Must pass the client's handle
                                                                           cSpec.in(),    //Pass the component specifications
                                                                           false);    //Inform manager this component is NOT the default for it's type!
 
        //As always, the reference must be CORBA casted to it's correct type.
        acsexmplHelloWorld::HelloWorld_var hwRef = acsexmplHelloWorld::HelloWorld::_narrow(cInfo->reference.in());

        //Ensure it's a valid reference
        if (CORBA::is_nil(hwRef.in()) == false)
            {
            ACS_SHORT_LOG((LM_INFO, "Retrieved valid reference from manager."));
            //Do something useful with the component...
            hwRef->displayMessage();
            ACS_SHORT_LOG((LM_INFO, "Method of dynamic component successfully invoked. Have a nice day!"));
            }
        else
            {
            ACS_SHORT_LOG((LM_ERROR, "Bad reference retrieved from manager"));
            }
        }
// first we catch CORBA user exception ...
    catch( maciErrType::IncompleteComponentSpecEx &_ex)  // can be thrown by get_dynamic_component
        {
        // we convert CORBA exception to C++ local exception
        maciErrType::IncompleteComponentSpecExImpl ex(_ex);
        ex.log();
        }
    catch( maciErrType::InvalidComponentSpecEx &_ex) // can be thrown by get_dynamic_component
        {
        // we convert CORBA exception to C++ local exception
        maciErrType::InvalidComponentSpecExImpl ex(_ex);
        ex.log();
        }
    catch( maciErrType::ComponentSpecIncompatibleWithActiveComponentEx &_ex) // can be thrown by get_dynamic_component
        {
        // we convert CORBA exception to C++ local exception
        maciErrType::ComponentSpecIncompatibleWithActiveComponentExImpl ex(_ex);
        ex.log();
        }
    catch( maciErrType::CannotGetComponentEx &_ex) // can be thrown by get_dynamic_component
        {
        // we convert CORBA exception to C++ local exception
        maciErrType::CannotGetComponentExImpl ex(_ex);
        ex.log();
        }
    catch( CORBA::SystemException &_ex )  // ... than CORBA system exception
        {
        ACSErrTypeCommon::CORBAProblemExImpl corbaProblemEx(__FILE__, __LINE__,
                                                            "main");
        corbaProblemEx.setMinor(_ex.minor());
        corbaProblemEx.setCompletionStatus(_ex.completed());
        corbaProblemEx.setInfo(_ex._info().c_str());
        corbaProblemEx.log();
        return -1;
        }
    catch(...)
        {
        ACSErrTypeCommon::UnexpectedExceptionExImpl uex(__FILE__, __LINE__, 
                                                        "main");
        uex.log();
        return -1;
        }//try-catch

        try
            {
            //Must remember to release the dynamic component!
            client.releaseComponent( cInfo->name);      
        
            //Cleanly log out of manager.
            client.logout();
        }
        catch(maciErrType::CannotReleaseComponentExImpl &_ex) // this can be thrown by releaseComponent
            {
            _ex.log();
            return -1;
            }
        catch(...)
            {
            ACSErrTypeCommon::UnexpectedExceptionExImpl uex(__FILE__, __LINE__, 
                                                            "main");
            uex.log();
            return -1;
            }//try-catch
  
    //sleep for 3 sec to allow everytihng to cleanup and stabilize
    //so that the tests can be determinitstic.
    ACE_OS::sleep(3);   
    return 0;
}
/*___oOo___*/