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#include "Signal_Handler.h"
#include "orbsvcs/LoadBalancing/LB_LoadManager.h"
#include "tao/ORB_Core.h"
#include "ace/Get_Opt.h"
ACE_RCSID (LoadBalancer,
LoadBalancer,
"$Id$")
static const char * lm_ior_file = "lm.ior";
void
usage (const ACE_TCHAR * cmd)
{
ACE_DEBUG ((LM_INFO,
ACE_TEXT ("Usage: %s ")
ACE_TEXT ("-o <ior_output_file> ")
ACE_TEXT ("-s <RoundRobin|Random|LeastLoaded> ")
ACE_TEXT ("-h ")
ACE_TEXT ("\n\n")
ACE_TEXT (" NOTE: Standard default values will be used ")
ACE_TEXT ("for \"LeastLoaded\" strategy.\n"),
cmd));
}
void
parse_args (int argc,
ACE_TCHAR *argv[],
int & default_strategy
ACE_ENV_ARG_DECL)
{
ACE_Get_Opt get_opts (argc, argv, ACE_TEXT ("o:s:h"));
int c = 0;
while ((c = get_opts ()) != -1)
{
switch (c)
{
case 'o':
::lm_ior_file = get_opts.opt_arg ();
break;
case 's':
if (ACE_OS::strcasecmp (get_opts.opt_arg (),
"RoundRobin") == 0)
default_strategy = 0;
else if (ACE_OS::strcasecmp (get_opts.opt_arg (),
"Random") == 0)
default_strategy = 1;
else if (ACE_OS::strcasecmp (get_opts.opt_arg (),
"LeastLoaded") == 0)
default_strategy = 2;
else
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Unknown strategy, using RoundRobin\n")));
break;
case 'h':
::usage (argv[0]);
break;
default:
::usage (argv[0]);
ACE_THROW (CORBA::BAD_PARAM ());
}
}
}
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
ACE_DECLARE_NEW_CORBA_ENV;
ACE_TRY
{
// The usual server side boilerplate code.
CORBA::ORB_var orb = CORBA::ORB_init (argc,
argv,
""
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
CORBA::Object_var obj =
orb->resolve_initial_references ("RootPOA"
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
PortableServer::POA_var root_poa =
PortableServer::POA::_narrow (obj.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
PortableServer::POAManager_var poa_manager =
root_poa->the_POAManager (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
poa_manager->activate (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
// "built-in" strategies are the following:
// 0 = RoundRobin
// 1 = Random
// 2 = LeastLoaded
int default_strategy = 1;
// Check the non-ORB arguments.
::parse_args (argc,
argv,
default_strategy
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
// Activate/register the signal handler that (attempts) to
// ensure graceful shutdown of the LoadManager so that remote
// resources created by the LoadManager can be cleaned up.
TAO_LB_Signal_Handler signal_handler (orb.in (), root_poa.in ());
if (signal_handler.activate () != 0)
return -1;
TAO_LB_LoadManager * lm;
ACE_NEW_THROW_EX (lm,
TAO_LB_LoadManager,
CORBA::NO_MEMORY (
CORBA::SystemException::_tao_minor_code (
TAO_DEFAULT_MINOR_CODE,
ENOMEM),
CORBA::COMPLETED_NO));
ACE_TRY_CHECK;
PortableServer::ServantBase_var safe_lm = lm;
// Initalize the LoadManager servant.
lm->init (orb->orb_core ()->reactor (),
orb.in (),
root_poa.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
PortableGroup::Properties props (1);
props.length (1);
props[0].nam.length (1);
props[0].nam[0].id =
CORBA::string_dup ("org.omg.CosLoadBalancing.Strategy");
CosLoadBalancing::StrategyInfo strategy_info;
switch (default_strategy)
{
case 0:
strategy_info.name = CORBA::string_dup ("RoundRobin");
break;
case 1:
strategy_info.name = CORBA::string_dup ("Random");
break;
case 2:
strategy_info.name = CORBA::string_dup ("LeastLoaded");
break;
default:
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ERROR: LoadBalancer internal error.\n")
ACE_TEXT (" Unknown built-in strategy.\n")),
-1);
}
props[0].val <<= strategy_info;
lm->set_default_properties (props
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
CosLoadBalancing::LoadManager_var load_manager =
lm->_this (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
CORBA::String_var str =
orb->object_to_string (load_manager.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
FILE * lm_ior = ACE_OS::fopen (lm_ior_file, "w");
ACE_OS::fprintf (lm_ior, "%s", str.in ());
ACE_OS::fclose (lm_ior);
orb->run (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
orb->destroy (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
}
// ACE_CATCH (PortableGroup::InvalidProperty, ex)
// {
// ACE_DEBUG ((LM_DEBUG, "Property ----> %s\n", ex.nam[0].id.in ()));
// }
ACE_CATCHANY
{
ACE_PRINT_EXCEPTION (ACE_ANY_EXCEPTION,
"TAO Load Manager");
return -1;
}
ACE_ENDTRY;
return 0;
}
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