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/* -*- C++ -*- */
// $Id: Peer_Router.h 80826 2008-03-04 14:51:23Z wotte $
// The interface between one or more peers and a stream. A peer
// typically runs remotely on another machine.
#ifndef _PEER_ROUTER_H
#define _PEER_ROUTER_H
#include "ace/Acceptor.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/Svc_Handler.h"
#include "ace/UPIPE_Acceptor.h"
#include "ace/UPIPE_Addr.h"
#include "ace/Thread_Manager.h"
#include "ace/Map_Manager.h"
#if defined (ACE_HAS_THREADS)
#include "ace/RW_Mutex.h"
// Forward declaration.
template <class PEER_HANDLER, class KEY>
class Peer_Router;
template <class PEER_HANDLER, class KEY>
class Acceptor_Factory : public ACE_Acceptor<PEER_HANDLER, ACE_UPIPE_ACCEPTOR>
{
public:
Acceptor_Factory (Peer_Router<PEER_HANDLER, KEY> *pr);
Peer_Router<PEER_HANDLER, KEY> *router (void);
int init (int argc, ACE_TCHAR *argv[]);
// Initialize the acceptor when it's linked dynamically.
private:
Peer_Router<PEER_HANDLER, KEY> *pr_;
};
// Receive input from a Peer..
template <class ROUTER, class KEY>
class Peer_Handler : public ACE_Svc_Handler<ACE_UPIPE_STREAM, ACE_MT_SYNCH>
{
public:
Peer_Handler (ACE_Thread_Manager * = 0);
virtual int open (void * = 0);
// Called by the ACE_Acceptor::handle_input() to activate this object.
virtual int handle_input (ACE_HANDLE);
// Receive input from the peer..
virtual int put (ACE_Message_Block *, ACE_Time_Value *tv = 0);
// Send output to a peer.
protected:
ROUTER *router_task_;
// Pointer to write task..
private:
// Don't need this method here...
virtual int svc (void);
};
// This abstract base class provides mechanisms for routing messages
// to/from a ACE_Stream from/to one or more peers (which are typically
// running on remote hosts). A subclass of Peer_Router overrides the
// open(), close(), and put() methods in order to specialize the
// behavior of the router to meet application-specific requirements.
template <class PEER_HANDLER, class PEER_KEY>
class Peer_Router : public ACE_Task<ACE_MT_SYNCH>
{
public:
Peer_Router (ACE_Thread_Manager * = 0);
~Peer_Router (void);
typedef Peer_Handler<Peer_Router<PEER_HANDLER, PEER_KEY>, PEER_KEY> HANDLER;
// Remove a PEER_HANDLER from the PEER_MAP.
virtual int unbind_peer (PEER_KEY);
// Add a PEER_HANDLER to the PEER_MAP.
virtual int bind_peer (PEER_KEY, HANDLER *);
// Send the message block to the peer(s)..
int send_peers (ACE_Message_Block *mb);
protected:
// Handle control messages arriving from adjacent Modules.
virtual int control (ACE_Message_Block *);
// Map used to keep track of active peers.
ACE_Map_Manager <PEER_KEY, PEER_HANDLER *, ACE_RW_Mutex> peer_map_;
// Dynamic linking initialization hooks inherited from ACE_Task.
virtual int init (int argc, ACE_TCHAR *argv[]);
virtual int fini (void);
// Factory for accepting new PEER_HANDLERs.
Acceptor_Factory<PEER_HANDLER, PEER_KEY> *acceptor_;
private:
// Prevent copies and pass-by-value.
ACE_UNIMPLEMENTED_FUNC (Peer_Router (const Peer_Router<PEER_HANDLER, PEER_KEY> &))
ACE_UNIMPLEMENTED_FUNC (void operator= (const Peer_Router<PEER_HANDLER, PEER_KEY> &))
};
#if defined (__ACE_INLINE__)
#define ACE_INLINE inline
#else
#define ACE_INLINE
#endif /* __ACE_INLINE__ */
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "Peer_Router.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Peer_Router.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#endif /* ACE_HAS_THREADS */
#endif /* _PEER_ROUTER_H */
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