ceph/src/messages/MDentryUnlink.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_MDENTRYUNLINK_H
  17 #define CEPH_MDENTRYUNLINK_H
  18
  19 #include <string_view>
  20
  21 #include "messages/MMDSOp.h"
  22
  23 class MDentryUnlink final : public MMDSOp {
  24 private:
  25   static constexpr int HEAD_VERSION = 1;
  26   static constexpr int COMPAT_VERSION = 1;
  27
  28   dirfrag_t dirfrag;
  29   std::string dn;
  30
  31  public:
  32   dirfrag_t get_dirfrag() const { return dirfrag; }
  33   const std::string& get_dn() const { return dn; }
  34
  35   ceph::buffer::list straybl;
  36   ceph::buffer::list snapbl;
  37
  38 protected:
  39   MDentryUnlink() :
  40     MMDSOp(MSG_MDS_DENTRYUNLINK, HEAD_VERSION, COMPAT_VERSION) { }
  41   MDentryUnlink(dirfrag_t df, std::string_view n) :
  42     MMDSOp(MSG_MDS_DENTRYUNLINK, HEAD_VERSION, COMPAT_VERSION),
  43     dirfrag(df),
  44     dn(n) {}
  45   ~MDentryUnlink() final {}
  46
  47 public:
  48   std::string_view get_type_name() const override { return "dentry_unlink";}
  49   void print(std::ostream& o) const override {
  50     o << "dentry_unlink(" << dirfrag << " " << dn << ")";
  51   }
  52
  53   void decode_payload() override {
  54     using ceph::decode;
  55     auto p = payload.cbegin();
  56     decode(dirfrag, p);
  57     decode(dn, p);
  58     decode(straybl, p);
  59   }
  60   void encode_payload(uint64_t features) override {
  61     using ceph::encode;
  62     encode(dirfrag, payload);
  63     encode(dn, payload);
  64     encode(straybl, payload);
  65   }
  66 private:
  67   template<class T, typename... Args>
  68   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  69   template<class T, typename... Args>
  70   friend MURef<T> crimson::make_message(Args&&... args);
  71 };
  72
  73 #endif