ceph/src/messages/MPGStats.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_MPGSTATS_H
  16 #define CEPH_MPGSTATS_H
  17
  18 #include "osd/osd_types.h"
  19 #include "messages/PaxosServiceMessage.h"
  20
  21 class MPGStats : public PaxosServiceMessage {
  22   static constexpr int HEAD_VERSION = 2;
  23   static constexpr int COMPAT_VERSION = 1;
  24
  25 public:
  26   uuid_d fsid;
  27   std::map<pg_t, pg_stat_t> pg_stat;
  28   osd_stat_t osd_stat;
  29   std::map<int64_t, store_statfs_t> pool_stat;
  30   epoch_t epoch = 0;
  31
  32   MPGStats() : PaxosServiceMessage{MSG_PGSTATS, 0, HEAD_VERSION, COMPAT_VERSION} {}
  33   MPGStats(const uuid_d& f, epoch_t e)
  34     : PaxosServiceMessage{MSG_PGSTATS, 0, HEAD_VERSION, COMPAT_VERSION},
  35       fsid(f),
  36       epoch(e)
  37   {}
  38
  39 private:
  40   ~MPGStats() override {}
  41
  42 public:
  43   std::string_view get_type_name() const override { return "pg_stats"; }
  44   void print(std::ostream& out) const override {
  45     out << "pg_stats(" << pg_stat.size() << " pgs tid " << get_tid() << " v " << version << ")";
  46   }
  47
  48   void encode_payload(uint64_t features) override {
  49     using ceph::encode;
  50     paxos_encode();
  51     encode(fsid, payload);
  52     encode(osd_stat, payload, features);
  53     encode(pg_stat, payload);
  54     encode(epoch, payload);
  55     encode(utime_t{}, payload);
  56     encode(pool_stat, payload, features);
  57   }
  58   void decode_payload() override {
  59     using ceph::decode;
  60     auto p = payload.cbegin();
  61     paxos_decode(p);
  62     decode(fsid, p);
  63     decode(osd_stat, p);
  64     if (osd_stat.num_osds == 0) {
  65       // for the benefit of legacy OSDs who don't set this field
  66       osd_stat.num_osds = 1;
  67     }
  68     decode(pg_stat, p);
  69     decode(epoch, p);
  70     utime_t dummy;
  71     decode(dummy, p);
  72     if (header.version >= 2)
  73       decode(pool_stat, p);
  74   }
  75 };
  76
  77 #endif