ACE/examples/C++NPv1/Logging_Handler.h

   1 /*
   2 ** Copyright 2001 Addison Wesley. All Rights Reserved.
   3 */
   4
   5 #ifndef _LOGGING_HANDLER_H
   6 #define _LOGGING_HANDLER_H
   7
   8 #include "ace/FILE_IO.h"
   9 #include "ace/SOCK_Stream.h"
  10
  11 ACE_BEGIN_VERSIONED_NAMESPACE_DECL
  12 class ACE_Message_Block;
  13 ACE_END_VERSIONED_NAMESPACE_DECL
  14
  15 class Logging_Handler
  16 {
  17 protected:
  18   ACE_FILE_IO &log_file_; // Reference to a log file.
  19
  20   ACE_SOCK_Stream logging_peer_; // Connected to the client.
  21
  22 public:
  23   // Initialization and termination methods.
  24   Logging_Handler (ACE_FILE_IO &log_file): log_file_ (log_file) {}
  25   Logging_Handler (ACE_FILE_IO &log_file,
  26                    ACE_HANDLE handle): log_file_ (log_file)
  27   { logging_peer_.set_handle (handle); }
  28   Logging_Handler (ACE_FILE_IO &log_file,
  29                    const ACE_SOCK_Stream &logging_peer)
  30     : log_file_ (log_file), logging_peer_ (logging_peer) {}
  31   int close () { return logging_peer_.close (); }
  32
  33   // Receive one log record from a connected client.   Returns
  34   // length of record on success and <mblk> contains the
  35   // hostname, <mblk->cont()> contains the log record header
  36   // (the byte order and the length) and the data.  Returns -1 on
  37   // failure or connection close.
  38   int recv_log_record (ACE_Message_Block *&log_record);
  39
  40   // Write one record to the log file.  The <mblk> contains the
  41   // hostname and the <mblk->cont> contains the log record.
  42   // Returns length of record written on success, or -1 on failure.
  43   int write_log_record (ACE_Message_Block *log_record);
  44
  45   // Log one record by calling <recv_log_record> and
  46   // <write_log_record>.  Returns 0 on success and -1 on failure.
  47   int log_record ();
  48
  49   // Accessor method.
  50   ACE_SOCK_Stream &peer () { return logging_peer_; }
  51 };
  52
  53 #endif /* _LOGGING_HANDLER_H */