ceph/src/messages/MFSMap.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_MFSMAP_H
  17 #define CEPH_MFSMAP_H
  18
  19 #include "msg/Message.h"
  20 #include "mds/FSMap.h"
  21 #include "include/ceph_features.h"
  22
  23 class MFSMap : public MessageInstance<MFSMap> {
  24 public:
  25   friend factory;
  26
  27   epoch_t epoch;
  28   bufferlist encoded;
  29
  30   version_t get_epoch() const { return epoch; }
  31   const FSMap& get_fsmap() const {return fsmap;}
  32
  33   MFSMap() :
  34     MessageInstance(CEPH_MSG_FS_MAP), epoch(0) {}
  35   MFSMap(const uuid_d &f, const FSMap &fsmap_) :
  36     MessageInstance(CEPH_MSG_FS_MAP), epoch(fsmap_.get_epoch())
  37   {
  38     fsmap = fsmap_;
  39   }
  40 private:
  41   FSMap fsmap;
  42
  43   ~MFSMap() override {}
  44
  45 public:
  46   std::string_view get_type_name() const override { return "fsmap"; }
  47   void print(ostream& out) const override {
  48     out << "fsmap(e " << epoch << ")";
  49   }
  50
  51   // marshalling
  52   void decode_payload() override {
  53     auto p = payload.cbegin();
  54     decode(epoch, p);
  55     decode(fsmap, p);
  56   }
  57   void encode_payload(uint64_t features) override {
  58     using ceph::encode;
  59     encode(epoch, payload);
  60     encode(fsmap, payload, features);
  61   }
  62 };
  63
  64 #endif