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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// gateway
//
// = FILENAME
// Connection_Handler.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#if !defined (_CONNECTION_HANDLER)
#define _CONNECTION_HANDLER
#include "ace/Service_Config.h"
#include "ace/SOCK_Connector.h"
#include "ace/Svc_Handler.h"
#include "Config_Files.h"
#include "Options.h"
#include "Event.h"
// Forward declaration.
class Event_Channel;
class Connection_Handler : public ACE_Svc_Handler<ACE_SOCK_STREAM, ACE_SYNCH>
{
// = TITLE
// <Connection_Handler> contains info about connection state and
// addressing.
//
// = DESCRIPTION
// The <Connection_Handler> classes process events sent to the
// Event Channel from Suppliers and forward them to Consumers.
public:
Connection_Handler (void);
// Default constructor (needed to make <ACE_Connector> happy).
Connection_Handler (const Connection_Config_Info &);
// Real constructor.
virtual int open (void * = 0);
// Initialize and activate a single-threaded <Connection_Handler>
// (called by <ACE_Connector::handle_output>).
const ACE_INET_Addr &remote_addr (void);
// Returns the peer's routing address.
const ACE_INET_Addr &local_addr (void);
// Returns our local address.
// = Set/get connection id.
CONNECTION_ID connection_id (void);
void connection_id (CONNECTION_ID);
// = The current state of the Connection_Handler.
enum State
{
IDLE = 1, // Prior to initialization.
CONNECTING, // During connection establishment.
ESTABLISHED, // Connection_Handler is established and active.
DISCONNECTING, // Connection_Handler is in the process of connecting.
FAILED // Connection_Handler has failed.
};
// = Set/get the current state.
void state (State);
State state (void);
// = Set/get the current retry timeout delay.
void timeout (int);
int timeout (void);
// = Set/get the maximum retry timeout delay.
void max_timeout (int);
int max_timeout (void);
// = Set/get proxy role (i.e., 'S' for Supplier and 'C' for Consumer
// (necessary for error checking).
void connection_role (char);
char connection_role (void);
// = The total number of bytes sent/received on this proxy.
size_t total_bytes (void);
void total_bytes (size_t bytes);
// Increment count by <bytes>.
virtual int handle_timeout (const ACE_Time_Value &, const void *arg);
// Perform timer-based Connection_Handler reconnection.
virtual int handle_close (ACE_HANDLE = ACE_INVALID_HANDLE,
ACE_Reactor_Mask = ACE_Event_Handler::ALL_EVENTS_MASK);
// Perform Connection_Handler termination.
protected:
ACE_INET_Addr remote_addr_;
// Address of peer.
ACE_INET_Addr local_addr_;
// Address of us.
CONNECTION_ID connection_id_;
// The assigned connection ID of this entry.
size_t total_bytes_;
// The total number of bytes sent/received on this proxy.
State state_;
// The current state of the proxy.
int timeout_;
// Amount of time to wait between reconnection attempts.
int max_timeout_;
// Maximum amount of time to wait between reconnection attempts.
char connection_role_;
// Indicates which role the proxy plays ('S' == Supplier and 'C' ==
// Consumer).
Event_Channel *event_channel_;
// Reference to the <Event_Channel> that we use to forward all
// the events from Consumers and Suppliers.
};
class Connection_Handler_Factory
{
// = TITLE
// Creates the appropriate type of <Connection_Handler>.
//
// = DESCRIPTION
// <Connection_Handler>s can include <Consumer_Handler>,
// <Supplier_Handler>, <Thr_Consumer_Handler>, or
// <Thr_Supplier_Handler>).
public:
Connection_Handler *make_connection_handler (const Connection_Config_Info &);
// Make the appropriate type of <Connection_Handler>, based on the
// <Connection_Config_Info> parameter.
};
#endif /* _CONNECTION_HANDLER */
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