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 class MOSDRepScrubMap final : public MOSDFastDispatchOp {
  25 public:
  26   static constexpr int HEAD_VERSION = 2;
  27   static constexpr 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   ceph::buffer::list 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() final {}
  53
  54 public:
  55   std::string_view get_type_name() const override { return "rep_scrubmap"; }
  56   void print(std::ostream& out) const override {
  57     out << "rep_scrubmap(" << pgid << " e" << map_epoch
  58         << " from shard " << from
  59         << (preempted ? " PREEMPTED":"") << ")";
  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(from, payload);
  67     encode(preempted, payload);
  68   }
  69   void decode_payload() override {
  70     using ceph::decode;
  71     auto p = payload.cbegin();
  72     decode(pgid, p);
  73     decode(map_epoch, p);
  74     decode(from, p);
  75     if (header.version >= 2) {
  76       decode(preempted, p);
  77     }
  78   }
  79 private:
  80   template<class T, typename... Args>
  81   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  82 };
  83
  84 #endif