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// -*- IDL -*- $Id$
// This file contains the interface definitions for "Portable"
// Interceptor support.
// **********************************************************
// Notice that the Portable Interceptor specification
// is still under discussion in OMG and both the IDL
// and the implementation details in TAO will eventually
// change to conform with the PI spec in the future.
// **********************************************************
// Author (currently): Nanbor Wang <nanbor@cs.wustl.edu>
#include <corba.pidl>
#include <IOP.pidl>
#pragma prefix "TAO"
module PortableInterceptor
{
interface Cookie
{
// Cookie's are used to pass information among interceptors
// within a invocation or an upcall.
string myname ();
};
typedef sequence<Cookie> Cookies;
// Collections of Cookie's become Cookies'es.
interface RequestInfo
{
unsigned long get_request_id ();
/*
boolean set_request_id (in unsigned long rid);
// This method is disabled for now because I don't know
// the purpose of changing request id and how does it
// fit into TAO's current structure.
*/
boolean response_expected ();
// This method will eventually changed to support
// AMI.
CORBA::Object get_object ();
// Get the object reference the targeting object.
string get_operation ();
// We don't allow changing operation for now.
// Otherwise, we'll change
CORBA::NVList get_arguments ();
boolean set_arguments (in CORBA::NVList args);
// Accessing and changing the operation arguments/return value.
};
interface Interceptor
{
// Base interface for Interceptors.
readonly attribute string name;
};
interface ServerRequestInterceptor : Interceptor
{
// Server side request interceptor definition.
void preinvoke (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// Interception pointer before invoking the servant method.
void postinvoke (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// Interception pointer after invoking the servant method.
void exception_occurred (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// Exception interception point.
};
interface ClientRequestInterceptor : Interceptor
{
// Client side interceptor.
void preinvoke (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// Before remote invocation.
void postinvoke (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// After returned from remote invocation.
void exception_occurred (inout RequestInfo ri,
inout IOP::ServiceContextList sc,
inout Cookies ck);
// Exception occurred.
};
};
#pragma prefix ""
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