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/* -*- C++ -*- */
// $Id$
#if !defined (_PEER_ROUTER_H)
#define _PEER_ROUTER_H
#include "ace/Acceptor.h"
#include "ace/SOCK_Acceptor.h"
#include "ace/Thread_Manager.h"
#include "ace/Map_Manager.h"
#if defined (ACE_HAS_THREADS)
// 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_SOCK_ACCEPTOR>
// = TITLE
// Creates <PEER_HANDLERs>, which route events between peers.
{
public:
Acceptor_Factory (Peer_Router<PEER_HANDLER, KEY> *pr);
Peer_Router<PEER_HANDLER, KEY> *router (void);
int init (int argc, char *argv[]);
// Initialize the acceptor when it's linked dynamically.
private:
Peer_Router<PEER_HANDLER, KEY> *pr_;
};
template <class ROUTER, class KEY>
class Peer_Handler : public ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_MT_SYNCH>
// = TITLE
// Receive input from a Peer.
{
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:
typedef ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_MT_SYNCH> inherited;
ROUTER *router_task_;
// Pointer to write task.
private:
virtual int svc (void);
// Don't need this method here...
};
template <class PEER_HANDLER, class PEER_KEY>
class Peer_Router : public ACE_Task<ACE_MT_SYNCH>
// = TITLE
// 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).
//
// = DESCRIPTION
// 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.
{
public:
// = Initialization and termination methods.
Peer_Router (ACE_Thread_Manager * = 0);
~Peer_Router (void);
typedef Peer_Handler<Peer_Router<PEER_HANDLER, PEER_KEY>, PEER_KEY> HANDLER;
virtual int unbind_peer (PEER_KEY);
// Remove a PEER_HANDLER from the PEER_MAP.
virtual int bind_peer (PEER_KEY, HANDLER *);
// Add a PEER_HANDLER to the PEER_MAP
int send_peers (ACE_Message_Block *mb);
// Send the message block to the peer(s).
protected:
virtual int control (ACE_Message_Block *);
// Handle control messages arriving from adjacent Modules.
// = Useful typedefs
typedef ACE_Map_Manager <PEER_KEY, PEER_HANDLER *, ACE_RW_Mutex> PEER_MAP;
typedef ACE_Map_Iterator<PEER_KEY, PEER_HANDLER *, ACE_RW_Mutex> PEER_ITERATOR;
PEER_MAP peer_map_;
// Map used to keep track of active peers.
// = Dynamic linking initialization hooks inherited from ACE_Task
virtual int init (int argc, char *argv[]);
virtual int fini (void);
typedef Acceptor_Factory<PEER_HANDLER, PEER_KEY> ACCEPTOR;
ACCEPTOR *acceptor_;
// Factory for accepting new PEER_HANDLERs.
private:
// = Prevent copies and pass-by-value.
Peer_Router (const Peer_Router<PEER_HANDLER, PEER_KEY> &) {}
void operator= (const Peer_Router<PEER_HANDLER, PEER_KEY> &) {}
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "Peer_Router.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#endif /* ACE_HAS_THREADS */
#endif /* _PEER_ROUTER_H */
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