ceph/src/messages/MOSDAlive.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
  17 #ifndef CEPH_MOSDALIVE_H
  18 #define CEPH_MOSDALIVE_H
  19
  20 #include "messages/PaxosServiceMessage.h"
  21
  22 class MOSDAlive final : public PaxosServiceMessage {
  23 public:
  24   epoch_t want = 0;
  25
  26   MOSDAlive(epoch_t h, epoch_t w) : PaxosServiceMessage{MSG_OSD_ALIVE, h}, want(w) {}
  27   MOSDAlive() : MOSDAlive{0, 0} {}
  28 private:
  29   ~MOSDAlive() final {}
  30
  31 public:
  32   void encode_payload(uint64_t features) override {
  33     paxos_encode();
  34     using ceph::encode;
  35     encode(want, payload);
  36   }
  37   void decode_payload() override {
  38     auto p = payload.cbegin();
  39     paxos_decode(p);
  40     using ceph::decode;
  41     decode(want, p);
  42   }
  43
  44   std::string_view get_type_name() const override { return "osd_alive"; }
  45   void print(std::ostream &out) const override {
  46     out << "osd_alive(want up_thru " << want << " have " << version << ")";
  47   }
  48 private:
  49   template<class T, typename... Args>
  50   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  51 };
  52
  53 #endif