interceptors.cpp

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// interceptors.cpp,v 1.11 2003/12/09 15:42:20 bala Exp

#include "interceptors.h"
#include "tao/OctetSeqC.h"
#include "ace/Log_Msg.h"
#include "tao/ORB_Constants.h"
#include "ace/OS_NS_string.h"

ACE_RCSID (Service_Context_Manipulation,
           interceptors,
           "interceptors.cpp,v 1.11 2003/12/09 15:42:20 bala Exp")

const IOP::ServiceId service_id = 0xdeadbeef;
const char *request_msg = "REQUEST message";
const char *reply_msg = "REPLY message";
const char *forward_msg = "FORWARD message";
int send_request_count = 0;
int exception_count = 0;

Echo_Client_Request_Interceptor::
Echo_Client_Request_Interceptor (const char *id)
  : myname_ ("Echo_Client_Interceptor"),
    orb_id_ (CORBA::string_dup (id))
{
}

Echo_Client_Request_Interceptor::~Echo_Client_Request_Interceptor (void)
{
}

char *
Echo_Client_Request_Interceptor::name (ACE_ENV_SINGLE_ARG_DECL_NOT_USED)
  ACE_THROW_SPEC ((CORBA::SystemException))
{
  return CORBA::string_dup (this->myname_);
}

void
Echo_Client_Request_Interceptor::destroy (ACE_ENV_SINGLE_ARG_DECL_NOT_USED)
  ACE_THROW_SPEC ((CORBA::SystemException))
{
}

void
Echo_Client_Request_Interceptor::send_poll (
    PortableInterceptor::ClientRequestInfo_ptr
    ACE_ENV_ARG_DECL_NOT_USED)
  ACE_THROW_SPEC ((CORBA::SystemException))
{
  // Do Nothing
}

void
Echo_Client_Request_Interceptor::send_request (
    PortableInterceptor::ClientRequestInfo_ptr ri
    ACE_ENV_ARG_DECL)
  ACE_THROW_SPEC ((CORBA::SystemException,
                   PortableInterceptor::ForwardRequest))
{
  if (CORBA::is_nil (this->orb_.in ()))
    {
      int argc = 0;
      this->orb_ = CORBA::ORB_init (argc, 0,
                                    this->orb_id_.in ()
                                    ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;
    }

  CORBA::String_var operation =
    ri->operation (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::Object_var target =
    ri->target (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::String_var ior =
    this->orb_->object_to_string (target.in () ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  ACE_DEBUG ((LM_DEBUG,
              "%s.send_request "
              "from \"%s\" on object: %s\n",
              this->myname_,
              operation.in (),
              ior.in ()));

  // No svccontextx for _is_a call.
  if (ACE_OS::strcmp (operation.in (),
                      "_is_a") == 0)
    return;

  send_request_count++;

  ACE_TRY_NEW_ENV
    {
      ri->get_request_service_context (::service_id ACE_ENV_ARG_PARAMETER);
      ACE_TRY_CHECK;
    }
  ACE_CATCH (CORBA::BAD_PARAM, error)
    {
      // This is supposed to happen
      exception_count++;
    }
  ACE_ENDTRY;

  if (send_request_count == 1)
    {
      if (exception_count != 1)
        {
	  ACE_ERROR ((LM_ERROR,
                      "ERROR: Expected exception_count is <1>\n"));
        }
      ACE_ASSERT (exception_count == 1);
      // Populate target member of the ClientRequestInfo.

      // Make the context to send the context to the target
      IOP::ServiceContext sc;
      sc.context_id = ::service_id;

      CORBA::ULong string_len = ACE_OS::strlen (request_msg) + 1;
      CORBA::Octet *buf = CORBA::OctetSeq::allocbuf (string_len);
      ACE_OS::strcpy (ACE_reinterpret_cast (char *, buf), request_msg);

      sc.context_data.replace (string_len, string_len, buf, 1);

      // Add this context to the service context list.
      ri->add_request_service_context (sc, 0 ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;

      // Check that the request service context can be retrieved.
      IOP::ServiceContext_var sc2 =
        ri->get_request_service_context (::service_id ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;

      const char *buf2 =
        ACE_reinterpret_cast (const char *, sc2->context_data.get_buffer ());

      if (ACE_OS::strcmp (buf2, request_msg) != 0)
        {
            ACE_ERROR ((LM_ERROR,
                        "ERROR: Expected request service context to be: %s.\n"
                        "  Got: %s\n",
                        request_msg,
                        buf2));
        }
    }
  else if (send_request_count == 2)
    {
      ACE_DEBUG ((LM_DEBUG, "Exception count: %i\n", exception_count));
      if (exception_count != 2)
        {
          ACE_ERROR ((LM_ERROR,
                      "ERROR: Expected exception_count is <2>\n"));
        }
      ACE_ASSERT (exception_count == 2);
      // Populate target member of the ClientRequestInfo.

      // Make the context to send the context to the target
      IOP::ServiceContext sc;
      sc.context_id = ::service_id;

      CORBA::ULong string_len = ACE_OS::strlen (forward_msg) + 1;
      CORBA::Octet *buf = CORBA::OctetSeq::allocbuf (string_len);
      ACE_OS::strcpy (ACE_reinterpret_cast (char *, buf), forward_msg);

      sc.context_data.replace (string_len, string_len, buf, 1);
      // Add this context to the service context list.
      ri->add_request_service_context (sc, 0 ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;

      // Check that the request service context can be retrieved.
      IOP::ServiceContext_var sc2 =
        ri->get_request_service_context (::service_id ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;

      const char *buf2 =
        ACE_reinterpret_cast (const char *, sc2->context_data.get_buffer ());

      if (ACE_OS::strcmp (buf2, forward_msg) != 0)
        {
            ACE_ERROR ((LM_ERROR,
                        "ERROR: Expected request service context to be: %s.\n"
                        "  Got: %s\n",
                        forward_msg,
                        buf2));
        }
    }
  else
    {
      // Something's wrong
    }

}

void
Echo_Client_Request_Interceptor::receive_reply (
    PortableInterceptor::ClientRequestInfo_ptr ri
    ACE_ENV_ARG_DECL)
  ACE_THROW_SPEC ((CORBA::SystemException))
{

  if (CORBA::is_nil (this->orb_.in ()))
    {
      int argc = 0;
      this->orb_ = CORBA::ORB_init (argc, 0,
                                    this->orb_id_.in ()
                                    ACE_ENV_ARG_PARAMETER);
      ACE_CHECK;
    }

  CORBA::String_var operation =
    ri->operation (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::Object_var target =
    ri->target (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::String_var ior =
    this->orb_->object_to_string (target.in () ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  ACE_DEBUG ((LM_DEBUG,
              "%s.receive_reply from "
              "\"%s\" on object: %s\n",
              this->myname_,
              operation.in (),
              ior.in ()));

  // No svccontextx for _is_a call.
  if (ACE_OS::strcmp (operation.in (),
                      "_is_a") == 0)
    return;

  // Check that the reply service context was received as
  // expected.
  IOP::ServiceContext_var sc =
    ri->get_reply_service_context (::service_id ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  const char *buf =
    ACE_reinterpret_cast (const char *, sc->context_data.get_buffer ());
  ACE_DEBUG ((LM_DEBUG,
              "  Received reply service context: %s\n",
              buf));

  if (ACE_OS::strcmp (buf, reply_msg) != 0)
    {
        ACE_ERROR ((LM_ERROR,
                    "ERROR: Expected reply service context to be: %s\n",
                    reply_msg));
    }

  // Check that no one has messed with the request service context.
  IOP::ServiceContext_var sc2 =
    ri->get_request_service_context (::service_id ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  const char *buf2 =
    ACE_reinterpret_cast (const char *, sc2->context_data.get_buffer ());

  if (ACE_OS::strcmp (buf2, forward_msg) != 0)
    {
        ACE_ERROR ((LM_ERROR,
                    "ERROR: Expected request service context to be: %s.\n"
                    "  Got: %s\n",
                    forward_msg,
                    buf2));
    }
  send_request_count = 0;
  exception_count = 0;
}

void
Echo_Client_Request_Interceptor::receive_other (
    PortableInterceptor::ClientRequestInfo_ptr ri
    ACE_ENV_ARG_DECL)
  ACE_THROW_SPEC ((CORBA::SystemException,
                   PortableInterceptor::ForwardRequest))
{
  if (CORBA::is_nil (this->orb_.in ()))
    {
      int argc = 0;
      this->orb_ = CORBA::ORB_init (argc, 0,
                                    this->orb_id_.in ());
    }

  CORBA::String_var operation = ri->operation (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::Object_var target = ri->target (ACE_ENV_SINGLE_ARG_PARAMETER);
  ACE_CHECK;

  CORBA::String_var ior =
    this->orb_->object_to_string (target.in () ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  ACE_DEBUG ((LM_DEBUG,
              "%s.receive_other from "
              "\"%s\" on object: %s\n",
              this->myname_,
              operation.in (),
              ior.in ()));

  // Check that no one has messed with the request service context.
  IOP::ServiceContext_var sc =
    ri->get_request_service_context (::service_id ACE_ENV_ARG_PARAMETER);
  ACE_CHECK;

  const char *buf =
    ACE_reinterpret_cast (const char *, sc->context_data.get_buffer ());

  if (ACE_OS::strcmp (buf, request_msg) != 0)
    {
        ACE_ERROR ((LM_ERROR,
                    "ERROR: Expected request service context to be: %s.\n"
                    "  Got: %s\n",
                    request_msg,
                    buf));
    }
}

void
Echo_Client_Request_Interceptor::receive_exception (
    PortableInterceptor::ClientRequestInfo_ptr ri
    ACE_ENV_ARG_DECL)
  ACE_THROW_SPEC ((CORBA::SystemException,
                   PortableInterceptor::ForwardRequest))
{

  if (CORBA::is_nil (this->orb_.in ()))
    {
      int argc = 0;
      this->orb_ = CORBA::ORB_init (argc, 0,