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// $Id$
// ================================================================
//
// = FILENAME
// client.cpp
//
// = DESCRIPTION
// This is a client that uses buffered AMI calls.
//
// = AUTHOR
// Irfan Pyarali
//
// ================================================================
#include "testS.h"
#include "tao/Messaging/Messaging.h"
#include "ace/Get_Opt.h"
#include "ace/Read_Buffer.h"
ACE_RCSID(Buffered_AMI, client, "$Id$")
// Name of file contains ior.
static const char *IOR = "file://ior";
// Default iterations.
static CORBA::ULong iterations = 20;
// Default number of invocations to buffer before flushing.
static CORBA::Long message_count = iterations / 4;
// Time interval between invocation (in milli seconds).
static long interval = 1000;
// Flag indicates whether to shutdown remote server or not upon client
// shutdown.
static int shutdown_server = 0;
// AMI call or regular call.
static int invoke_ami_style = 1;
// Setup buffering or not.
static int setup_buffering = 1;
// Flag indicates that all replies have been received
static int received_all_replies = 0;
class Reply_Handler : public POA_AMI_testHandler
{
public:
void method (CORBA::ULong reply_number
ACE_ENV_ARG_DECL_NOT_USED)
ACE_THROW_SPEC ((CORBA::SystemException))
{
ACE_DEBUG ((LM_DEBUG,
"client: AMI Reply %d @ %T\n",
reply_number));
// Last reply flips the flag.
if (reply_number == iterations)
received_all_replies = 1;
}
void method_excep (AMI_testExceptionHolder *holder
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException))
{
ACE_TRY
{
holder->raise_method (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
}
ACE_CATCH(CORBA::SystemException, ex)
{
ACE_PRINT_EXCEPTION (ex, "Reply_Handler::method_excep: ");
}
ACE_ENDTRY;
}
void shutdown (ACE_ENV_SINGLE_ARG_DECL_NOT_USED)
ACE_THROW_SPEC ((CORBA::SystemException))
{
}
void shutdown_excep (AMI_testExceptionHolder *holder
ACE_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException))
{
ACE_TRY
{
holder->raise_shutdown (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
}
ACE_CATCH(CORBA::SystemException, ex)
{
ACE_PRINT_EXCEPTION (ex, "Reply_Handler::shutdown_excep: ");
}
ACE_ENDTRY;
}
};
static int
parse_args (int argc, char **argv)
{
ACE_Get_Opt get_opts (argc, argv, "a:b:k:m:i:t:x");
int c;
while ((c = get_opts ()) != -1)
switch (c)
{
case 'k':
IOR = get_opts.opt_arg ();
break;
case 'm':
message_count = ::atoi (get_opts.opt_arg ());
break;
case 'a':
invoke_ami_style = ::atoi (get_opts.opt_arg ());
break;
case 'b':
setup_buffering = ::atoi (get_opts.opt_arg ());
break;
case 'i':
iterations = ::atoi (get_opts.opt_arg ());
break;
case 't':
interval = ::atoi (get_opts.opt_arg ());
break;
case 'x':
shutdown_server = 1;
break;
case '?':
default:
ACE_ERROR_RETURN ((LM_ERROR,
"usage: %s "
"-k IOR "
"-m message count "
"-a invoke AMI style [0/1] "
"-b setup buffering [0/1] "
"-i iterations "
"-t interval between calls "
"-x shutdown server "
"\n",
argv [0]),
-1);
}
if (IOR == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"Please specify the IOR for the servant\n"), -1);
// Without AMI, replies are immediate.
if (!invoke_ami_style)
received_all_replies = 1;
// Message count must be a multiple of iterations; otherwise we'll
// have some unsent messages left in the buffered queue. Even
// though we can explicitly flush the queue, I am being lazy and
// forcing the user to give the right numbers.
if ((iterations % message_count) != 0)
{
ACE_ERROR_RETURN ((LM_ERROR,
"<message_count> must be a multiple <iterations> "
"or the program should be changed to flush explicitly \n"),
-1);
}
// Indicates successful parsing of command line.
return 0;
}
void
setup_buffering_constraints (CORBA::ORB_ptr orb
ACE_ENV_ARG_DECL)
{
// Obtain PolicyCurrent.
CORBA::Object_var object = orb->resolve_initial_references ("PolicyCurrent"
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// Narrow down to correct type.
CORBA::PolicyCurrent_var policy_current =
CORBA::PolicyCurrent::_narrow (object.in ()
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// Start off with no constraints.
TAO::BufferingConstraint buffering_constraint;
buffering_constraint.mode = TAO::BUFFER_MESSAGE_COUNT;
buffering_constraint.message_count = message_count;
buffering_constraint.message_bytes = 0;
buffering_constraint.timeout = 0;
// Setup the buffering constraint any.
CORBA::Any buffering_constraint_any;
buffering_constraint_any <<= buffering_constraint;
// Setup the buffering constraint policy list.
CORBA::PolicyList buffering_constraint_policy_list (1);
buffering_constraint_policy_list.length (1);
// Setup the buffering constraint policy.
buffering_constraint_policy_list[0] =
orb->create_policy (TAO::BUFFERING_CONSTRAINT_POLICY_TYPE,
buffering_constraint_any
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// Setup the constraints (at the ORB level).
policy_current->set_policy_overrides (buffering_constraint_policy_list,
CORBA::ADD_OVERRIDE
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// We are done with the policy.
buffering_constraint_policy_list[0]->destroy (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_CHECK;
// Setup the none sync scope policy, i.e., the ORB will buffer AMI
// calls.
Messaging::SyncScope sync_none = Messaging::SYNC_NONE;
// Setup the none sync scope any.
CORBA::Any sync_none_any;
sync_none_any <<= sync_none;
// Setup the none sync scope policy list.
CORBA::PolicyList sync_none_policy_list (1);
sync_none_policy_list.length (1);
// Setup the none sync scope policy.
sync_none_policy_list[0] =
orb->create_policy (Messaging::SYNC_SCOPE_POLICY_TYPE,
sync_none_any
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// Setup the none sync scope (at the ORB level).
policy_current->set_policy_overrides (sync_none_policy_list,
CORBA::ADD_OVERRIDE
ACE_ENV_ARG_PARAMETER);
ACE_CHECK;
// We are now done with these policies.
sync_none_policy_list[0]->destroy (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_CHECK;
}
int
main (int argc, char **argv)
{
ACE_DECLARE_NEW_CORBA_ENV;
ACE_TRY
{
// Initialize the ORB.
CORBA::ORB_var orb =
CORBA::ORB_init (argc,
argv,
0
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
// Initialize options based on command-line arguments.
int parse_args_result = parse_args (argc, argv);
if (parse_args_result != 0)
return parse_args_result;
CORBA::Object_var base =
orb->resolve_initial_references ("RootPOA"
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
PortableServer::POA_var root_poa =
PortableServer::POA::_narrow (base.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
// Get an object reference from the argument string.
base = orb->string_to_object (IOR
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;
// Try to narrow the object reference to a <test> reference.
test_var test_object = test::_narrow (base.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
Reply_Handler reply_handler_servant;
AMI_testHandler_var reply_handler_object = reply_handler_servant._this (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
if (setup_buffering)
{
setup_buffering_constraints (orb.in ()
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
}
for (CORBA::ULong i = 1; i <= iterations; ++i)
{
ACE_DEBUG ((LM_DEBUG,
"client: Iteration %d @ %T\n",
i));
if (invoke_ami_style)
{
// Invoke the AMI method.
test_object->sendc_method (reply_handler_object.in (),
i
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
}
else
{
CORBA::ULong reply_number = 0;
// Invoke the regular method.
test_object->method (i,
reply_number
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
ACE_DEBUG ((LM_DEBUG,
"client: Regular Reply %d @ %T\n",
reply_number));
}
// Interval between successive calls.
ACE_Time_Value sleep_interval (0,
interval * 1000);
orb->run (sleep_interval ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
}
// Loop until all replies have been received.
while (!received_all_replies)
{
orb->perform_work ();
}
// Shutdown server.
if (shutdown_server)
{
test_object->shutdown (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
}
root_poa->destroy (1,
1
ACE_ENV_ARG_PARAMETER);
ACE_TRY_CHECK;
// Destroy the ORB. On some platforms, e.g., Win32, the socket
// library is closed at the end of main(). This means that any
// socket calls made after main() fail. Hence if we wait for
// static destructors to flush the queues, it will be too late.
// Therefore, we use explicit destruction here and flush the
// queues before main() ends.
orb->destroy (ACE_ENV_SINGLE_ARG_PARAMETER);
ACE_TRY_CHECK;
}
ACE_CATCHANY
{
ACE_PRINT_EXCEPTION (ACE_ANY_EXCEPTION,
"Exception caught:");
return -1;
}
ACE_ENDTRY;
ACE_CHECK_RETURN (-1);
return 0;
}
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