ceph/src/messages/MExportDirCancel.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_MEXPORTDIRCANCEL_H
  16 #define CEPH_MEXPORTDIRCANCEL_H
  17
  18 #include "include/types.h"
  19 #include "messages/MMDSOp.h"
  20
  21 class MExportDirCancel final : public MMDSOp {
  22 private:
  23   static constexpr int HEAD_VERSION = 1;
  24   static constexpr int COMPAT_VERSION = 1;
  25   dirfrag_t dirfrag;
  26
  27  public:
  28   dirfrag_t get_dirfrag() const { return dirfrag; }
  29
  30 protected:
  31   MExportDirCancel() : MMDSOp{MSG_MDS_EXPORTDIRCANCEL, HEAD_VERSION, COMPAT_VERSION} {}
  32   MExportDirCancel(dirfrag_t df, uint64_t tid) :
  33     MMDSOp{MSG_MDS_EXPORTDIRCANCEL, HEAD_VERSION, COMPAT_VERSION}, dirfrag(df) {
  34     set_tid(tid);
  35   }
  36   ~MExportDirCancel() final {}
  37
  38 public:
  39   std::string_view get_type_name() const override { return "ExCancel"; }
  40   void print(std::ostream& o) const override {
  41     o << "export_cancel(" << dirfrag << ")";
  42   }
  43
  44   void encode_payload(uint64_t features) override {
  45     using ceph::encode;
  46     encode(dirfrag, payload);
  47   }
  48   void decode_payload() override {
  49     using ceph::decode;
  50     auto p = payload.cbegin();
  51     decode(dirfrag, p);
  52   }
  53 private:
  54   template<class T, typename... Args>
  55   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  56 };
  57
  58 #endif