server.cpp

来自「这是广泛使用的通信开源项目,对于大容量,高并发的通讯要求完全能够胜任,他广泛可用」· C++ 代码 · 共 203 行

// server.cpp,v 1.18 2003/08/06 20:47:00 dhinton Exp

//===================================================================
//  = LIBRARY
//      TAO/tests/POA/Default_Servant/server
//
//  = FILENAME
//      server.cpp
//
//  = DESCRIPTION
//      A server program for the File IDL module
//
//  = AUTHOR
//     Irfan Pyarali
//
//====================================================================

#include "Database_i.h"
#include "ace/Get_Opt.h"
#include "ace/SString.h"

ACE_RCSID(DSI, server, "server.cpp,v 1.18 2003/08/06 20:47:00 dhinton Exp")

static const char *ior_output_file = "ior";

static int
parse_args (int argc, char **argv)
{
  ACE_Get_Opt get_opts (argc, argv, "f:");
  int c;

  while ((c = get_opts ()) != -1)
    switch (c)
      {
      case 'f':
        ior_output_file = get_opts.opt_arg ();
        break;
      case '?':
      default:
        ACE_ERROR_RETURN ((LM_ERROR,
                           "usage:  %s "
                           "[-f ior_output_file] "
                           "\n",
                           argv [0]),
                          -1);
      }

  // Indicates successful parsing of command line.
  return 0;
}

static int
write_iors_to_file (const char *first_ior)
{
  FILE *output_file = ACE_OS::fopen (ior_output_file, "w");

  if (output_file == 0)
    ACE_ERROR_RETURN ((LM_ERROR, "Cannot open output files for writing IOR: %s\n",
                       ior_output_file),
                      -1);

  int result = 0;

  result = ACE_OS::fprintf (output_file,
                            "%s",
                            first_ior);
  if (result < 0 ||
      ACE_static_cast (size_t, result) != ACE_OS::strlen (first_ior))
    ACE_ERROR_RETURN ((LM_ERROR,
                       "ACE_OS::fprintf failed while writing %s to %s\n",
                       first_ior,
                       ior_output_file),
                      -1);

  ACE_OS::fclose (output_file);

  return 0;
}

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;

      int result = parse_args (argc, argv);
      if (result != 0)
        return result;

      // Obtain the RootPOA.
      CORBA::Object_var obj =
        orb->resolve_initial_references ("RootPOA"
                                         ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      // Narrow the object reference to a POA reference
      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;

      CORBA::PolicyList policies (5);
      policies.length (5);

      // ID Assignment Policy
      policies[0] =
        root_poa->create_id_assignment_policy (PortableServer::USER_ID ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      // Lifespan Policy
      policies[1] =
        root_poa->create_lifespan_policy (PortableServer::PERSISTENT
                                          ACE_ENV_ARG_PARAMETER);

      // Request Processing Policy
      policies[2] =
        root_poa->create_request_processing_policy (PortableServer::USE_DEFAULT_SERVANT
                                                    ACE_ENV_ARG_PARAMETER);

      // Servant Retention Policy
      policies[3] =
        root_poa->create_servant_retention_policy (PortableServer::RETAIN ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      // Id Uniqueness Policy
      policies[4] =
        root_poa->create_id_uniqueness_policy (PortableServer::MULTIPLE_ID ACE_ENV_ARG_PARAMETER);

      ACE_TRY_CHECK;

      ACE_CString name = "firstPOA";
      PortableServer::POA_var first_poa = root_poa->create_POA (name.c_str (),
                                                                poa_manager.in (),
                                                                policies
                                                                ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      for (CORBA::ULong i = 0;
           i < policies.length ();
           ++i)
        {
          CORBA::Policy_ptr policy = policies[i];
          policy->destroy (ACE_ENV_SINGLE_ARG_PARAMETER);
          ACE_TRY_CHECK;
        }

      // Create a Database Agent Implementation object in first_poa
      DatabaseImpl::Agent database_agent_impl (orb.in (),
                                               first_poa.in ()
                                               ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      PortableServer::ObjectId_var database_agent_oid =
        PortableServer::string_to_ObjectId ("DatabaseAgent");

      first_poa->activate_object_with_id (database_agent_oid.in (),
                                          &database_agent_impl
                                          ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      CORBA::Object_var database_agent =
        first_poa->id_to_reference (database_agent_oid.in () ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      // Get the IOR for the "DatabaseAgent" object
      CORBA::String_var database_agent_ior =
        orb->object_to_string (database_agent.in () ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;

      ACE_DEBUG ((LM_DEBUG,"%s\n",
                  database_agent_ior.in ()));

      int write_result = write_iors_to_file (database_agent_ior.in ());
      if (write_result != 0)
        return write_result;

      // set the state of the poa_manager to active i.e ready to process requests
      poa_manager->activate (ACE_ENV_SINGLE_ARG_PARAMETER);
      ACE_TRY_CHECK;

      // Run the ORB
      orb->run (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;
}