ceph/src/messages/MOSDPGBackfillRemove.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_MOSDPGBACKFILLREMOVE_H
  16 #define CEPH_MOSDPGBACKFILLREMOVE_H
  17
  18 #include "MOSDFastDispatchOp.h"
  19
  20 /*
  21  * instruct non-primary to remove some objects during backfill
  22  */
  23
  24 class MOSDPGBackfillRemove : public MessageInstance<MOSDPGBackfillRemove, MOSDFastDispatchOp> {
  25 public:
  26   friend factory;
  27
  28   static constexpr int HEAD_VERSION = 1;
  29   static constexpr int COMPAT_VERSION = 1;
  30
  31   spg_t pgid;            ///< target spg_t
  32   epoch_t map_epoch = 0;
  33   list<pair<hobject_t,eversion_t>> ls;    ///< objects to remove
  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   MOSDPGBackfillRemove()
  43     : MessageInstance(MSG_OSD_PG_BACKFILL_REMOVE, HEAD_VERSION,
  44                         COMPAT_VERSION) {}
  45
  46   MOSDPGBackfillRemove(spg_t pgid, epoch_t map_epoch)
  47     : MessageInstance(MSG_OSD_PG_BACKFILL_REMOVE, HEAD_VERSION,
  48                          COMPAT_VERSION),
  49       pgid(pgid),
  50       map_epoch(map_epoch) {}
  51
  52 private:
  53   ~MOSDPGBackfillRemove() {}
  54
  55 public:
  56   std::string_view get_type_name() const override { return "backfill_remove"; }
  57   void print(ostream& out) const override {
  58     out << "backfill_remove(" << pgid << " e" << map_epoch
  59         << " " << ls << ")";
  60   }
  61
  62   void encode_payload(uint64_t features) override {
  63     using ceph::encode;
  64     encode(pgid, payload);
  65     encode(map_epoch, payload);
  66     encode(ls, payload);
  67   }
  68   void decode_payload() override {
  69     auto p = payload.cbegin();
  70     decode(pgid, p);
  71     decode(map_epoch, p);
  72     decode(ls, p);
  73   }
  74 };
  75
  76
  77
  78 #endif