ceph/src/messages/MOSDPGBackfill.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_MOSDPGBACKFILL_H
  16 #define CEPH_MOSDPGBACKFILL_H
  17
  18 #include "MOSDFastDispatchOp.h"
  19
  20 class MOSDPGBackfill : public MOSDFastDispatchOp {
  21 private:
  22   static constexpr int HEAD_VERSION = 3;
  23   static constexpr int COMPAT_VERSION = 3;
  24 public:
  25   enum {
  26     OP_BACKFILL_PROGRESS = 2,
  27     OP_BACKFILL_FINISH = 3,
  28     OP_BACKFILL_FINISH_ACK = 4,
  29   };
  30   const char *get_op_name(int o) const {
  31     switch (o) {
  32     case OP_BACKFILL_PROGRESS: return "progress";
  33     case OP_BACKFILL_FINISH: return "finish";
  34     case OP_BACKFILL_FINISH_ACK: return "finish_ack";
  35     default: return "???";
  36     }
  37   }
  38
  39   __u32 op = 0;
  40   epoch_t map_epoch = 0, query_epoch = 0;
  41   spg_t pgid;
  42   hobject_t last_backfill;
  43   pg_stat_t stats;
  44
  45   epoch_t get_map_epoch() const override {
  46     return map_epoch;
  47   }
  48   epoch_t get_min_epoch() const override {
  49     return query_epoch;
  50   }
  51   spg_t get_spg() const override {
  52     return pgid;
  53   }
  54
  55   void decode_payload() override {
  56     auto p = payload.cbegin();
  57     decode(op, p);
  58     decode(map_epoch, p);
  59     decode(query_epoch, p);
  60     decode(pgid.pgid, p);
  61     decode(last_backfill, p);
  62
  63     // For compatibility with version 1
  64     decode(stats.stats, p);
  65
  66     decode(stats, p);
  67
  68     // Handle hobject_t format change
  69     if (!last_backfill.is_max() &&
  70         last_backfill.pool == -1)
  71       last_backfill.pool = pgid.pool();
  72     decode(pgid.shard, p);
  73   }
  74
  75   void encode_payload(uint64_t features) override {
  76     using ceph::encode;
  77     encode(op, payload);
  78     encode(map_epoch, payload);
  79     encode(query_epoch, payload);
  80     encode(pgid.pgid, payload);
  81     encode(last_backfill, payload);
  82
  83     // For compatibility with version 1
  84     encode(stats.stats, payload);
  85
  86     encode(stats, payload);
  87
  88     encode(pgid.shard, payload);
  89   }
  90
  91   MOSDPGBackfill()
  92     : MOSDFastDispatchOp{MSG_OSD_PG_BACKFILL, HEAD_VERSION, COMPAT_VERSION} {}
  93   MOSDPGBackfill(__u32 o, epoch_t e, epoch_t qe, spg_t p)
  94     : MOSDFastDispatchOp{MSG_OSD_PG_BACKFILL, HEAD_VERSION, COMPAT_VERSION},
  95       op(o),
  96       map_epoch(e), query_epoch(e),
  97       pgid(p) {}
  98 private:
  99   ~MOSDPGBackfill() override {}
 100
 101 public:
 102   std::string_view get_type_name() const override { return "pg_backfill"; }
 103   void print(ostream& out) const override {
 104     out << "pg_backfill(" << get_op_name(op)
 105         << " " << pgid
 106         << " e " << map_epoch << "/" << query_epoch
 107         << " lb " << last_backfill
 108         << ")";
 109   }
 110
 111 private:
 112   template<class T, typename... Args>
 113   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
 114 };
 115
 116 #endif