ceph/src/messages/MOSDMarkMeDown.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) 2013 Inktank Storage, Inc.
   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_MOSDMARKMEDOWN_H
  16 #define CEPH_MOSDMARKMEDOWN_H
  17
  18 #include "messages/PaxosServiceMessage.h"
  19
  20 class MOSDMarkMeDown final : public PaxosServiceMessage {
  21 private:
  22   static constexpr int HEAD_VERSION = 4;
  23   static constexpr int COMPAT_VERSION = 3;
  24
  25  public:
  26   uuid_d fsid;
  27   int32_t target_osd;
  28   entity_addrvec_t target_addrs;
  29   epoch_t epoch = 0;
  30   bool request_ack = false;          // ack requested
  31   bool down_and_dead = false;        // mark down and dead
  32
  33   MOSDMarkMeDown()
  34     : PaxosServiceMessage{MSG_OSD_MARK_ME_DOWN, 0,
  35                           HEAD_VERSION, COMPAT_VERSION} { }
  36   MOSDMarkMeDown(const uuid_d &fs, int osd, const entity_addrvec_t& av,
  37                  epoch_t e, bool request_ack)
  38     : PaxosServiceMessage{MSG_OSD_MARK_ME_DOWN, e,
  39                           HEAD_VERSION, COMPAT_VERSION},
  40       fsid(fs), target_osd(osd), target_addrs(av),
  41       epoch(e), request_ack(request_ack) {}
  42   MOSDMarkMeDown(const uuid_d &fs, int osd, const entity_addrvec_t& av,
  43                  epoch_t e, bool request_ack, bool down_and_dead)
  44     : PaxosServiceMessage{MSG_OSD_MARK_ME_DOWN, e,
  45                           HEAD_VERSION, COMPAT_VERSION},
  46       fsid(fs), target_osd(osd), target_addrs(av),
  47       epoch(e), request_ack(request_ack), down_and_dead(down_and_dead) {}
  48  private:
  49   ~MOSDMarkMeDown() final {}
  50
  51 public:
  52   epoch_t get_epoch() const { return epoch; }
  53
  54   void decode_payload() override {
  55     using ceph::decode;
  56     auto p = payload.cbegin();
  57     paxos_decode(p);
  58     assert(header.version >= 3);
  59     decode(fsid, p);
  60     decode(target_osd, p);
  61     decode(target_addrs, p);
  62     decode(epoch, p);
  63     decode(request_ack, p);
  64     if(header.version >= 4)
  65       decode(down_and_dead, p);
  66   }
  67
  68   void encode_payload(uint64_t features) override {
  69     using ceph::encode;
  70     paxos_encode();
  71     assert(HAVE_FEATURE(features, SERVER_NAUTILUS));
  72     header.version = HEAD_VERSION;
  73     header.compat_version = COMPAT_VERSION;
  74     encode(fsid, payload);
  75     encode(target_osd, payload, features);
  76     encode(target_addrs, payload, features);
  77     encode(epoch, payload);
  78     encode(request_ack, payload);
  79     encode(down_and_dead, payload);
  80   }
  81
  82   std::string_view get_type_name() const override { return "MOSDMarkMeDown"; }
  83   void print(std::ostream& out) const override {
  84     out << "MOSDMarkMeDown("
  85         << "request_ack=" << request_ack
  86         << ", down_and_dead=" << down_and_dead
  87         << ", osd." << target_osd
  88         << ", " << target_addrs
  89         << ", fsid=" << fsid
  90         << ")";
  91   }
  92 private:
  93   template<class T, typename... Args>
  94   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  95 };
  96
  97 #endif