ceph/src/mds/events/ESubtreeMap.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) 2004-2006 Sage Weil <sage@newdream.net>
   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 CEPH_MDS_ESUBTREEMAP_H
  16 #define CEPH_MDS_ESUBTREEMAP_H
  17
  18 #include "../LogEvent.h"
  19 #include "EMetaBlob.h"
  20
  21 class ESubtreeMap : public LogEvent {
  22 public:
  23   EMetaBlob metablob;
  24   map<dirfrag_t, vector<dirfrag_t> > subtrees;
  25   set<dirfrag_t> ambiguous_subtrees;
  26   uint64_t expire_pos;
  27   uint64_t event_seq;
  28
  29   ESubtreeMap() : LogEvent(EVENT_SUBTREEMAP), expire_pos(0), event_seq(0) { }
  30
  31   void print(ostream& out) const override {
  32     out << "ESubtreeMap " << subtrees.size() << " subtrees "
  33         << ", " << ambiguous_subtrees.size() << " ambiguous "
  34         << metablob;
  35   }
  36
  37   EMetaBlob *get_metablob() override { return &metablob; }
  38
  39   void encode(bufferlist& bl, uint64_t features) const override;
  40   void decode(bufferlist::iterator& bl) override;
  41   void dump(Formatter *f) const override;
  42   static void generate_test_instances(list<ESubtreeMap*>& ls);
  43
  44   void replay(MDSRank *mds) override;
  45 };
  46 WRITE_CLASS_ENCODER_FEATURES(ESubtreeMap)
  47
  48 #endif