ceph/src/tools/cephfs/JournalFilter.h

   1 // -*- mode:c++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3 /*
   4  * ceph - scalable distributed file system
   5  *
   6  * copyright (c) 2014 john spray <john.spray@inktank.com>
   7  *
   8  * this is free software; you can redistribute it and/or
   9  * modify it under the terms of the gnu lesser general public
  10  * license version 2.1, as published by the free software
  11  * foundation.  see file copying.
  12  */
  13
  14
  15 #ifndef JOURNAL_FILTER_H
  16 #define JOURNAL_FILTER_H
  17
  18 #include "mds/mdstypes.h"
  19 #include "mds/LogEvent.h"
  20
  21 /**
  22  * A set of conditions for narrowing down a search through the journal
  23  */
  24 class JournalFilter
  25 {
  26   private:
  27
  28   /* Filtering by journal offset range */
  29   uint64_t range_start;
  30   uint64_t range_end;
  31   static const std::string range_separator;
  32
  33   /* Filtering by file (sub) path */
  34   std::string path_expr;
  35
  36   /* Filtering by inode */
  37   inodeno_t inode;
  38
  39   /* Filtering by type */
  40   LogEvent::EventType event_type;
  41
  42   /* Filtering by dirfrag */
  43   dirfrag_t frag;
  44   std::string frag_dentry;  //< optional, filter dentry name within fragment
  45
  46   /* Filtering by metablob client name */
  47   entity_name_t client_name;
  48
  49   public:
  50   JournalFilter() :
  51     range_start(0),
  52     range_end(-1),
  53     inode(0),
  54     event_type(0) {}
  55
  56   bool get_range(uint64_t &start, uint64_t &end) const;
  57   bool apply(uint64_t pos, LogEvent &le) const;
  58   int parse_args(
  59     std::vector<const char*> &argv,
  60     std::vector<const char*>::iterator &arg);
  61 };
  62
  63 #endif // JOURNAL_FILTER_H
  64