ceph/src/messages/MExportCapsAck.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_MEXPORTCAPSACK_H
  17 #define CEPH_MEXPORTCAPSACK_H
  18
  19 #include "messages/MMDSOp.h"
  20
  21 class MExportCapsAck final : public MMDSOp {
  22  static constexpr int HEAD_VERSION = 1;
  23  static constexpr int COMPAT_VERSION = 1;
  24
  25 public:
  26   inodeno_t ino;
  27   ceph::buffer::list cap_bl;
  28
  29 protected:
  30   MExportCapsAck() :
  31     MMDSOp{MSG_MDS_EXPORTCAPSACK, HEAD_VERSION, COMPAT_VERSION} {}
  32   MExportCapsAck(inodeno_t i) :
  33     MMDSOp{MSG_MDS_EXPORTCAPSACK, HEAD_VERSION, COMPAT_VERSION}, ino(i) {}
  34   ~MExportCapsAck() final {}
  35
  36 public:
  37   std::string_view get_type_name() const override { return "export_caps_ack"; }
  38   void print(std::ostream& o) const override {
  39     o << "export_caps_ack(" << ino << ")";
  40   }
  41
  42   void encode_payload(uint64_t features) override {
  43     using ceph::encode;
  44     encode(ino, payload);
  45     encode(cap_bl, payload);
  46   }
  47   void decode_payload() override {
  48     using ceph::decode;
  49     auto p = payload.cbegin();
  50     decode(ino, p);
  51     decode(cap_bl, p);
  52   }
  53 private:
  54   template<class T, typename... Args>
  55   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  56   template<class T, typename... Args>
  57   friend MURef<T> crimson::make_message(Args&&... args);
  58 };
  59
  60 #endif