ceph/src/messages/MOSDPGUpdateLogMissing.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
  16 #ifndef CEPH_MOSDPGUPDATELOGMISSING_H
  17 #define CEPH_MOSDPGUPDATELOGMISSING_H
  18
  19 #include "MOSDFastDispatchOp.h"
  20
  21 class MOSDPGUpdateLogMissing final : public MOSDFastDispatchOp {
  22 private:
  23   static constexpr int HEAD_VERSION = 3;
  24   static constexpr int COMPAT_VERSION = 1;
  25
  26 public:
  27   epoch_t map_epoch = 0, min_epoch = 0;
  28   spg_t pgid;
  29   shard_id_t from;
  30   ceph_tid_t rep_tid = 0;
  31   mempool::osd_pglog::list<pg_log_entry_t> entries;
  32   // piggybacked osd/pg state
  33   eversion_t pg_trim_to; // primary->replica: trim to here
  34   eversion_t pg_roll_forward_to; // primary->replica: trim rollback info to here
  35
  36   epoch_t get_epoch() const { return map_epoch; }
  37   spg_t get_pgid() const { return pgid; }
  38   epoch_t get_query_epoch() const { return map_epoch; }
  39   ceph_tid_t get_tid() const { return rep_tid; }
  40
  41   epoch_t get_map_epoch() const override {
  42     return map_epoch;
  43   }
  44   epoch_t get_min_epoch() const override {
  45     return min_epoch;
  46   }
  47   spg_t get_spg() const override {
  48     return pgid;
  49   }
  50
  51   MOSDPGUpdateLogMissing()
  52     : MOSDFastDispatchOp{MSG_OSD_PG_UPDATE_LOG_MISSING, HEAD_VERSION,
  53                          COMPAT_VERSION} {}
  54   MOSDPGUpdateLogMissing(
  55     const mempool::osd_pglog::list<pg_log_entry_t> &entries,
  56     spg_t pgid,
  57     shard_id_t from,
  58     epoch_t epoch,
  59     epoch_t min_epoch,
  60     ceph_tid_t rep_tid,
  61     eversion_t pg_trim_to,
  62     eversion_t pg_roll_forward_to)
  63     : MOSDFastDispatchOp{MSG_OSD_PG_UPDATE_LOG_MISSING, HEAD_VERSION,
  64                          COMPAT_VERSION},
  65       map_epoch(epoch),
  66       min_epoch(min_epoch),
  67       pgid(pgid),
  68       from(from),
  69       rep_tid(rep_tid),
  70       entries(entries),
  71       pg_trim_to(pg_trim_to),
  72       pg_roll_forward_to(pg_roll_forward_to)
  73   {}
  74
  75 private:
  76   ~MOSDPGUpdateLogMissing() final {}
  77
  78 public:
  79   std::string_view get_type_name() const override { return "PGUpdateLogMissing"; }
  80   void print(std::ostream& out) const override {
  81     out << "pg_update_log_missing(" << pgid << " epoch " << map_epoch
  82         << "/" << min_epoch
  83         << " rep_tid " << rep_tid
  84         << " entries " << entries
  85         << " trim_to " << pg_trim_to
  86         << " roll_forward_to " << pg_roll_forward_to
  87         << ")";
  88   }
  89
  90   void encode_payload(uint64_t features) override {
  91     using ceph::encode;
  92     encode(map_epoch, payload);
  93     encode(pgid, payload);
  94     encode(from, payload);
  95     encode(rep_tid, payload);
  96     encode(entries, payload);
  97     encode(min_epoch, payload);
  98     encode(pg_trim_to, payload);
  99     encode(pg_roll_forward_to, payload);
 100   }
 101   void decode_payload() override {
 102     using ceph::decode;
 103     auto p = payload.cbegin();
 104     decode(map_epoch, p);
 105     decode(pgid, p);
 106     decode(from, p);
 107     decode(rep_tid, p);
 108     decode(entries, p);
 109     if (header.version >= 2) {
 110       decode(min_epoch, p);
 111     } else {
 112       min_epoch = map_epoch;
 113     }
 114     if (header.version >= 3) {
 115       decode(pg_trim_to, p);
 116       decode(pg_roll_forward_to, p);
 117     }
 118   }
 119 private:
 120   template<class T, typename... Args>
 121   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
 122 };
 123
 124 #endif