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 : public MOSDFastDispatchOp {
  22
  23   static const int HEAD_VERSION = 3;
  24   static const int COMPAT_VERSION = 1;
  25
  26
  27 public:
  28   epoch_t map_epoch, min_epoch;
  29   spg_t pgid;
  30   shard_id_t from;
  31   ceph_tid_t rep_tid;
  32   mempool::osd_pglog::list<pg_log_entry_t> entries;
  33   // piggybacked osd/pg state
  34   eversion_t pg_trim_to; // primary->replica: trim to here
  35   eversion_t pg_roll_forward_to; // primary->replica: trim rollback info to here
  36
  37   epoch_t get_epoch() const { return map_epoch; }
  38   spg_t get_pgid() const { return pgid; }
  39   epoch_t get_query_epoch() const { return map_epoch; }
  40   ceph_tid_t get_tid() const { return rep_tid; }
  41
  42   epoch_t get_map_epoch() const override {
  43     return map_epoch;
  44   }
  45   epoch_t get_min_epoch() const override {
  46     return min_epoch;
  47   }
  48   spg_t get_spg() const override {
  49     return pgid;
  50   }
  51
  52   MOSDPGUpdateLogMissing()
  53     : MOSDFastDispatchOp(MSG_OSD_PG_UPDATE_LOG_MISSING, HEAD_VERSION,
  54                          COMPAT_VERSION) { }
  55   MOSDPGUpdateLogMissing(
  56     const mempool::osd_pglog::list<pg_log_entry_t> &entries,
  57     spg_t pgid,
  58     shard_id_t from,
  59     epoch_t epoch,
  60     epoch_t min_epoch,
  61     ceph_tid_t rep_tid,
  62     eversion_t pg_trim_to,
  63     eversion_t pg_roll_forward_to)
  64     : MOSDFastDispatchOp(MSG_OSD_PG_UPDATE_LOG_MISSING, HEAD_VERSION,
  65                          COMPAT_VERSION),
  66       map_epoch(epoch),
  67       min_epoch(min_epoch),
  68       pgid(pgid),
  69       from(from),
  70       rep_tid(rep_tid),
  71       entries(entries),
  72       pg_trim_to(pg_trim_to),
  73       pg_roll_forward_to(pg_roll_forward_to)
  74   {}
  75
  76 private:
  77   ~MOSDPGUpdateLogMissing() override {}
  78
  79 public:
  80   const char *get_type_name() const override { return "PGUpdateLogMissing"; }
  81   void print(ostream& out) const override {
  82     out << "pg_update_log_missing(" << pgid << " epoch " << map_epoch
  83         << "/" << min_epoch
  84         << " rep_tid " << rep_tid
  85         << " entries " << entries
  86         << " trim_to " << pg_trim_to
  87         << " roll_forward_to " << pg_roll_forward_to
  88         << ")";
  89   }
  90
  91   void encode_payload(uint64_t features) override {
  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     bufferlist::iterator p = payload.begin();
 103     ::decode(map_epoch, p);
 104     ::decode(pgid, p);
 105     ::decode(from, p);
 106     ::decode(rep_tid, p);
 107     ::decode(entries, p);
 108     if (header.version >= 2) {
 109       ::decode(min_epoch, p);
 110     } else {
 111       min_epoch = map_epoch;
 112     }
 113     if (header.version >= 3) {
 114       ::decode(pg_trim_to, p);
 115       ::decode(pg_roll_forward_to, p);
 116     }
 117   }
 118 };
 119
 120 #endif