include/wvlogfile.h

   1 /* -*- Mode: C++ -*-
   2  * Worldvisions Weaver Software:
   3  *   Copyright (C) 1997-2002 Net Integration Technologies, Inc.
   4  *
   5  * A "Log Receiver" that logs messages to a file
   6  */
   7
   8 #ifndef __WVLOGFILE_H
   9 #define __WVLOGFILE_H
  10
  11 #include "wvfile.h"
  12 #include "wvlogrcv.h"
  13
  14 /// Basic WvLogRcv that logs to a file. Always logs to the same file.
  15 /// No auto-rotation of log files.
  16 class WvLogFileBase : public WvLogRcv, public WvFile
  17 {
  18 public:
  19     WvLogFileBase(WvStringParm _filename,
  20                   WvLog::LogLevel _max_level = WvLog::NUM_LOGLEVELS);
  21
  22     // run fsync() every so many log messages.  0 never fsyncs.
  23     int fsync_every;
  24
  25 protected:
  26     WvLogFileBase(WvLog::LogLevel _max_level);
  27     virtual void _make_prefix(time_t now_sec);
  28     virtual void _mid_line(const char *str, size_t len);
  29     virtual void _end_line();
  30
  31     int fsync_count;
  32 };
  33
  34
  35 /// A more advanced WvLogFileBase.  Logs to a file named <filename>.<date>.
  36 /// Deletes old log files after 'keep_for' days.
  37 class WvLogFile : public WvLogFileBase
  38 {
  39 public:
  40     WvLogFile(WvStringParm _filename,
  41               WvLog::LogLevel _max_level = WvLog::NUM_LOGLEVELS,
  42               int _keep_for = 7, bool _force_new_line = false,
  43               bool _allow_append = true);
  44
  45     WvString start_log();
  46
  47 private:
  48     virtual void _make_prefix(time_t now_sec);
  49     int keep_for, last_day;
  50     WvString filename;
  51     bool allow_append;
  52
  53 public:
  54     const char *wstype() const { return "WvLogFileBase"; }
  55 };
  56
  57 #endif // __WVLOGFILE_H