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