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/* -*- C++ -*- */
// $Id$
// ============================================================================
//
// = LIBRARY
// apps
//
// = FILENAME
// Event.h
//
// = AUTHOR
// Doug Schmidt
//
// ============================================================================
#if !defined (EVENT)
#define EVENT
#include "ace/OS.h"
// This is the unique connection identifier that denotes a particular
// Proxy_Handler in the Gateway.
typedef ACE_INT32 ACE_INT32;
class Event_Key
// = TITLE
// Address used to identify the source/destination of an event.
//
// = DESCRIPTION
// This is really a "virtual forwarding address" thatis used to
// decouple the filtering and forwarding logic of the Event
// Channel from the format of the data.
{
public:
Event_Key (ACE_INT32 cid = -1,
u_char sid = 0,
u_char type = 0)
: conn_id_ (cid),
supplier_id_ (sid),
type_ (type) {}
int operator== (const Event_Key &event_addr) const
{
return this->conn_id_ == event_addr.conn_id_
&& this->supplier_id_ == event_addr.supplier_id_
&& this->type_ == event_addr.type_;
}
ACE_INT32 conn_id_;
// Unique connection identifier that denotes a particular
// Proxy_Handler.
ACE_INT32 supplier_id_;
// Logical ID.
ACE_INT32 type_;
// Event type.
};
class Event_Header
// = TITLE
// Fixed sized header.
//
// = DESCRIPTION
// This is designed to have a sizeof (16) to avoid alignment
// problems on most platforms.
{
public:
typedef ACE_INT32 SUPPLIER_ID;
// Type used to forward events from gatewayd.
enum
{
INVALID_ID = -1 // No peer can validly use this number.
};
void decode (void)
{
this->len_ = ntohl (this->len_);
this->supplier_id_ = ntohl (this->supplier_id_);
this->type_ = ntohl (this->type_);
this->priority_ = ntohl (this->priority_);
}
// Decode from network byte order to host byte order.
void encode (void)
{
this->len_ = htonl (this->len_);
this->supplier_id_ = htonl (this->supplier_id_);
this->type_ = htonl (this->type_);
this->priority_ = htonl (this->priority_);
}
// Encode from host byte order to network byte order.
size_t len_;
// Length of the data_ payload, in bytes.
SUPPLIER_ID supplier_id_;
// Source ID.
ACE_INT32 type_;
// Event type.
ACE_INT32 priority_;
// Event priority.
};
class Event
// = TITLE
// Variable-sized event (data_ may be variable-sized between
// 0 and MAX_PAYLOAD_SIZE).
{
public:
enum { MAX_PAYLOAD_SIZE = 1024 };
// The maximum size of an Event.
Event_Header header_;
// Event header.
char data_[MAX_PAYLOAD_SIZE];
// Event data.
};
#endif /* EVENT */
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