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/* -*- C++ -*- */
//=============================================================================
/**
* @file Server_Logging_Handler_T.h
*
* @author Doug Schmidt and Per Andersson
*/
//=============================================================================
#ifndef ACE_SERVER_LOGGING_HANDLER_T_H
#define ACE_SERVER_LOGGING_HANDLER_T_H
#include "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "ace/TLI_Acceptor.h"
#include "ace/SOCK_Acceptor.h"
#include "ace/Svc_Handler.h"
#include "ace/Acceptor.h"
#include "ace/SString.h"
#include "ace/Atomic_Op.h"
#if !defined (__GNUG__)
#include "Base_Optimizer.h"
#endif /* ! __GNUG__ */
/**
* @class ACE_Server_Logging_Handler_T
*
* @brief Product object created by an <ACE_Server_Logging_Acceptor_T>. An
* <ACE_Server_Logging_Handler_T> receives, and frames logging
* records. The logging record is then processed by the
* <LOG_MESSAGE_RECEIVER>
*
* Defines the classes that perform server logging daemon
* functionality.
*/
template <ACE_PEER_STREAM_1, class COUNTER, ACE_SYNCH_DECL, class LOG_MESSAGE_RECEIVER>
class ACE_Server_Logging_Handler_T : public ACE_Svc_Handler<ACE_PEER_STREAM_2, ACE_SYNCH_USE>
{
public:
/// Constructor.
ACE_Server_Logging_Handler_T (ACE_Thread_Manager *,
const LOG_MESSAGE_RECEIVER &receiver );
/// Process remote logging records.
virtual int handle_input (ACE_HANDLE = ACE_INVALID_HANDLE);
protected:
/// Receive the logging record from a client.
int handle_logging_record (void);
/// Common parts of open function, sets hostname and diables NONBLOCK in peer
/// called from derived classes open method.
int open_common (void);
/// Count the number of logging records that arrive.
static COUNTER request_count_;
#if !defined (__GNUG__)
/**
* Packs a LOG_MESSAGE_RECEIVER and ACE_CString attribute together
* in a optimized fashion. The LOG_MESSAGE_RECEIVER class is often
* a class with no instance data.
*/
Base_Optimizer<LOG_MESSAGE_RECEIVER, ACE_TString> receiver_;
#else
LOG_MESSAGE_RECEIVER receiver_;
ACE_TString host_name_;
#endif /* ! __GNUG__ */
/// Name of the host we are connected to.
const ACE_TCHAR *host_name (void);
/// The receiver of log records
LOG_MESSAGE_RECEIVER &receiver (void){ return receiver_; }
};
#if 1 //!defined (ACE_HAS_TLI)
#define LOGGING_PEER_ACCEPTOR ACE_SOCK_ACCEPTOR
#define LOGGING_PEER_STREAM ACE_SOCK_STREAM
#else /* use sockets */
#define LOGGING_PEER_ACCEPTOR ACE_TLI_ACCEPTOR
#define LOGGING_PEER_STREAM ACE_TLI_STREAM
#endif /* ACE_HAS_TLI */
/**
* @class ACE_Server_Logging_Acceptor_T
*
* @brief Factory that creates <SERVER_LOGGING_HANDLER>s scheduled with
* <SCHEDULE_STRATEGY> and logging records proccessed by a
* <LOG_MESSAGE_RECEIVER>
*
* This class contains the service-specific methods that can't
* easily be factored into the <ACE_Strategy_Acceptor>.
*/
template<class SERVER_LOGGING_HANDLER, class LOG_MESSAGE_RECEIVER, class SCHEDULE_STRATEGY>
class ACE_Server_Logging_Acceptor_T : public ACE_Strategy_Acceptor<SERVER_LOGGING_HANDLER, LOGGING_PEER_ACCEPTOR>
{
public:
/// Dynamic linking hook.
ACE_Server_Logging_Acceptor_T (void);
virtual int init (int argc, ACE_TCHAR *argv[]);
protected:
/// Parse svc.conf arguments.
int parse_args (int argc, ACE_TCHAR *argv[]);
/**
* Factory that creates a new <SERVER_LOGGING_HANDLER>. We need to
* specialize this since the <LOG_MESSAGE_RECEIVER> held by this Acceptor must be
* passed into the <SERVER_LOGGING_HANDLER>.
*/
virtual int make_svc_handler (SERVER_LOGGING_HANDLER *&);
private:
// At the moment each ACE_Server_Logging_Acceptor_T contains
// a <LOG_MESSAGE_RECEIVER> attribute that is passed to the
// <SERVER_LOGGING_HANDLER> at construction. A better idea might
// be to have accessor class as template argument. The accessor
// should be a factory/strategy that hands the
// ACE_Server_Logging_Acceptor_T instance references
// to a <LOG_MESSAGE_RECEIVER>. This makes it possible
// to change how <LOG_MESSAGE_RECEIVER> are created without chaning the
// ACE_Server_Logging_Acceptor_T code.
#if !defined (__GNUG__)
/**
* Packs a LOG_MESSAGE_RECEIVER and ACE_CString attribute together
* in a optimized fashion. The LOG_MESSAGE_RECEIVER class is often a
* class with no instance data.
*/
Base_Optimizer<LOG_MESSAGE_RECEIVER, SCHEDULE_STRATEGY> receiver_;
#else
LOG_MESSAGE_RECEIVER receiver_;
SCHEDULE_STRATEGY schedule_strategy_;
#endif /* ! __GNUG__ */
/// The scheduling strategy for the service.
SCHEDULE_STRATEGY &scheduling_strategy (void);
/// The receiver of log records
LOG_MESSAGE_RECEIVER &receiver (void);
};
/**
* @class ACE_Server_Logging_Handler
*
* @brief Product object created by a
* <ACE_Server_Logging_Acceptor_T<ACE_Server_Logging_Handler> >. An
* ACE_Server_Logging_Handler receives, frames. The logging record
* is then processed by the <LOG_MESSAGE_RECEIVER>
*
* All clients are handled in the same thread.
*/
template<class LOG_MESSAGE_RECEIVER>
class ACE_Server_Logging_Handler : public ACE_Server_Logging_Handler_T<LOGGING_PEER_STREAM, u_long, ACE_NULL_SYNCH, LOG_MESSAGE_RECEIVER>
{
public:
ACE_Server_Logging_Handler (ACE_Thread_Manager * = 0);
ACE_Server_Logging_Handler (ACE_Thread_Manager *,
const LOG_MESSAGE_RECEIVER &receiver);
virtual int open (void* = 0);
};
#if defined (ACE_HAS_THREADS)
typedef ACE_Atomic_Op <ACE_Thread_Mutex, u_long> ACE_LOGGER_COUNTER;
#define ACE_LOGGER_SYNCH ACE_MT_SYNCH
#else
typedef u_long ACE_LOGGER_COUNTER;
#define ACE_LOGGER_SYNCH ACE_NULL_SYNCH
#endif /* ACE_HAS_THREADS */
/**
* @class ACE_Thr_Server_Logging_Handler
*
* @brief Product object created by a
* <ACE_Server_Logging_Acceptor_T<ACE_Thr_Server_Logging_Handler>
* >. An ACE_Thr_Server_Logging_Handler receives, frames. The
* logging record is then processed by the <LOG_MESSAGE_RECEIVER>
*
* Each client is handled in its own separate thread.
*/
template<class LOG_MESSAGE_RECEIVER>
class ACE_Thr_Server_Logging_Handler : public ACE_Server_Logging_Handler_T<LOGGING_PEER_STREAM, ACE_LOGGER_COUNTER, ACE_LOGGER_SYNCH, LOG_MESSAGE_RECEIVER>
{
public:
ACE_Thr_Server_Logging_Handler (ACE_Thread_Manager * = 0);
ACE_Thr_Server_Logging_Handler (ACE_Thread_Manager *,
const LOG_MESSAGE_RECEIVER &receiver);
virtual int open (void * = 0);
virtual int svc ();
};
#if defined (ACE_TEMPLATES_REQUIRE_SOURCE)
#include "Server_Logging_Handler_T.cpp"
#endif /* ACE_TEMPLATES_REQUIRE_SOURCE */
#if defined (ACE_TEMPLATES_REQUIRE_PRAGMA)
#pragma implementation ("Server_Logging_Handler_T.cpp")
#endif /* ACE_TEMPLATES_REQUIRE_PRAGMA */
#endif /* ACE_SERVER_LOGGING_HANDLER_T_H */
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