ceph/src/messages/MOSDRepScrubMap.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) 2017 Sage Weil <sage@redhat.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 CEPH_MOSDREPSCRUBMAP_H
  16 #define CEPH_MOSDREPSCRUBMAP_H
  17
  18 #include "MOSDFastDispatchOp.h"
  19
  20 /*
  21  * pass a ScrubMap from a shard back to the primary
  22  */
  23
  24 struct MOSDRepScrubMap : public MOSDFastDispatchOp {
  25
  26   static const int HEAD_VERSION = 2;
  27   static const int COMPAT_VERSION = 1;
  28
  29   spg_t pgid;            // primary spg_t
  30   epoch_t map_epoch = 0;
  31   pg_shard_t from;   // whose scrubmap this is
  32   bufferlist scrub_map_bl;
  33   bool preempted = false;
  34
  35   epoch_t get_map_epoch() const override {
  36     return map_epoch;
  37   }
  38   spg_t get_spg() const override {
  39     return pgid;
  40   }
  41
  42   MOSDRepScrubMap()
  43     : MOSDFastDispatchOp(MSG_OSD_REP_SCRUBMAP, HEAD_VERSION, COMPAT_VERSION) {}
  44
  45   MOSDRepScrubMap(spg_t pgid, epoch_t map_epoch, pg_shard_t from)
  46     : MOSDFastDispatchOp(MSG_OSD_REP_SCRUBMAP, HEAD_VERSION, COMPAT_VERSION),
  47       pgid(pgid),
  48       map_epoch(map_epoch),
  49       from(from) {}
  50
  51 private:
  52   ~MOSDRepScrubMap() {}
  53
  54 public:
  55   const char *get_type_name() const { return "rep_scrubmap"; }
  56   void print(ostream& out) const {
  57     out << "rep_scrubmap(" << pgid << " e" << map_epoch
  58         << " from shard " << from
  59         << (preempted ? " PREEMPTED":"") << ")";
  60   }
  61
  62   void encode_payload(uint64_t features) {
  63     ::encode(pgid, payload);
  64     ::encode(map_epoch, payload);
  65     ::encode(from, payload);
  66     ::encode(preempted, payload);
  67   }
  68   void decode_payload() {
  69     bufferlist::iterator p = payload.begin();
  70     ::decode(pgid, p);
  71     ::decode(map_epoch, p);
  72     ::decode(from, p);
  73     if (header.version >= 2) {
  74       ::decode(preempted, p);
  75     }
  76   }
  77 };
  78
  79
  80 #endif