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//=============================================================================
/**
* @file Identity_Client.cpp
*
* @author Marina Spivak <marina@cs.wustl.edu>
*/
//=============================================================================
#include "Identity_Client.h"
#include "IdentityC.h"
#include "Load_BalancerC.h"
#include "tao/debug.h"
#include "ace/Get_Opt.h"
#include "ace/High_Res_Timer.h"
#include "ace/Stats.h"
Identity_Client::Identity_Client (void)
: group_factory_ior_ (0),
number_of_invocations_ (5),
use_random_ (0),
iterations_ (0)
{
}
int
Identity_Client::parse_args (int argc, ACE_TCHAR *argv[])
{
ACE_Get_Opt get_opts (argc, argv, ACE_TEXT("di:n:k:r"));
int c;
while ((c = get_opts ()) != -1)
switch (c)
{
case 'd': // debug flag.
TAO_debug_level++;
break;
case 'i': // ior of the <Object_Group_Factory> object.
this->group_factory_ior_ = get_opts.opt_arg ();
break;
case 'n': // number of times to make invocation on an <Identity> object.
this->number_of_invocations_ = ACE_OS::atoi (get_opts.opt_arg ());
break;
case 'k':
this->iterations_ = ACE_OS::atoi (get_opts.opt_arg ());
break;
case 'r': // flag signifying to obtain references to <Identity>
// objects from the random <Object_Group> rather than
// from the round robin one.
this->use_random_ = 1;
break;
case '?':
default:
ACE_ERROR_RETURN ((LM_ERROR,
"usage: %s"
" [-d]"
" [-i] <Object_Group_Factory_ior>"
" [-n] <number_of_invocations>"
" [-r]"
"\n",
argv [0]),
-1);
}
// Indicates successful parsing of command line.
return 0;
}
int
Identity_Client::init (int argc, ACE_TCHAR* argv[])
{
int result;
try
{
result = this->orb_manager_.init (argc, argv);
if (result == -1)
return result;
// Check the non-ORB arguments.
result = this->parse_args (argc, argv);
if (result < 0)
return result;
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Identity_Client::init");
return -1;
}
return 0;
}
int
Identity_Client::run (void)
{
// Contact the <Object_Group_Factory> to obtain an <Object_Group>.
CORBA::ORB_var orb = orb_manager_.orb ();
CORBA::Object_var obj =
orb->string_to_object (this->group_factory_ior_);
if (obj.in () == 0)
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("(%N|%l) <ERROR> [Identity_Client::run]\n")
ACE_TEXT ("factory_resolve\n")),
-1);
Load_Balancer::Object_Group_Factory_var factory =
Load_Balancer::Object_Group_Factory::_narrow (obj.in ());
if (CORBA::is_nil (factory.in ()))
ACE_ERROR_RETURN ((LM_ERROR,
"Identity_Client: problems using the factory ior\n"),
-1);
const char *group_name;
if (this->use_random_)
group_name = "Random group";
else
group_name = "Round Robin group";
Load_Balancer::Object_Group_var object_group;
// We have this for the measurement that was done.
#if defined (DOORS_MEASURE_STATS)
// Performance measurements start here
ACE_High_Res_Timer::calibrate ();
ACE_hrtime_t throughput_base = ACE_OS::gethrtime ();
ACE_Throughput_Stats throughput;
ACE_High_Res_Timer::global_scale_factor_type gsf =
ACE_High_Res_Timer::global_scale_factor ();
for (int i = 0; i < this->iterations_; i++)
{
// Record current time.
ACE_hrtime_t latency_base = ACE_OS::gethrtime ();
#endif /*TAO_MEASURE_STATS*/
// Remote call
object_group =
factory->resolve (group_name);
CORBA::String_var iorstring =
orb->object_to_string (object_group.in ());
ACE_DEBUG ((LM_DEBUG,
"The ior string is %s\n", iorstring.in ()));
#if defined (DOORS_MEASURE_STATS)
// Grab timestamp again.
ACE_hrtime_t now = ACE_OS::gethrtime ();
// Record statistics.
throughput.sample (now - throughput_base,
now - latency_base);
}
ACE_OS::printf ("*=*=*=*=Aggregated result *=*=*=*=*=\n");
throughput.dump_results (ACE_TEXT("Aggregated"), gsf);
#endif /*TAO_MEASURE_STATS */
if (CORBA::is_nil (object_group.in ()))
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%l|%d)The narrowed object is NUL:"),
-1);
}
// List <Object_Group>'s id.
CORBA::String_var id = object_group->id ();
ACE_DEBUG ((LM_DEBUG, "Object Group's id is: %s\n\n", id.in ()));
// List all <Object_Group>s members.
Load_Balancer::Member_ID_List_var id_list =
object_group->members ();
ACE_DEBUG ((LM_DEBUG,
"The group contains %d members:\n",
id_list->length ()));
for (CORBA::ULong i = 0; i < id_list->length (); ++i)
ACE_DEBUG ((LM_DEBUG, "%s\n", static_cast<char const*>(id_list[i])));
// Perform <number_of_invocations_> method calls on <Identity>
// objects, which are members of the <Object_Group>. Before each
// invocations, we get an <Identity> reference to use for that
// invocation from our <Object_Group>.
Identity_var identity_object;
CORBA::String_var identity;
CORBA::String_var objref;
for (size_t ind = 0; ind < this->number_of_invocations_; ++ind)
{
objref = object_group->resolve ();
obj = orb->string_to_object (objref.in ());
identity_object = Identity::_narrow (obj.in ());
if (CORBA::is_nil (identity_object.in ()))
ACE_ERROR_RETURN ((LM_ERROR,
"Identity_Client: cannot narrow an object received from"
"<Object_Group::resolve> to <Identity>\n"),
-1);
identity_object->get_name (identity.out ());
ACE_DEBUG ((LM_DEBUG,
"Invocation %s\n",
identity.in ()));
}
return 0;
}
Identity_Client::~Identity_Client (void)
{
}
int
ACE_TMAIN(int argc, ACE_TCHAR *argv[])
{
int result = 0;
Identity_Client client;
if (client.init (argc, argv) == -1)
return 1;
try
{
result = client.run ();
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Identity_Client");
return 1;
}
if (result == -1)
return 1;
else
return 0;
}
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