ceph/src/messages/MMDSFragmentNotify.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_MMDSFRAGMENTNOTIFY_H
  16 #define CEPH_MMDSFRAGMENTNOTIFY_H
  17
  18 #include "messages/MMDSOp.h"
  19
  20 class MMDSFragmentNotify final : public MMDSOp {
  21 private:
  22   static constexpr int HEAD_VERSION = 2;
  23   static constexpr int COMPAT_VERSION = 1;
  24
  25   dirfrag_t base_dirfrag;
  26   int8_t bits = 0;
  27   bool ack_wanted = false;
  28
  29  public:
  30   inodeno_t get_ino() const { return base_dirfrag.ino; }
  31   frag_t get_basefrag() const { return base_dirfrag.frag; }
  32   dirfrag_t get_base_dirfrag() const { return base_dirfrag; }
  33   int get_bits() const { return bits; }
  34   bool is_ack_wanted() const { return ack_wanted; }
  35   void mark_ack_wanted() { ack_wanted = true; }
  36
  37   ceph::buffer::list basebl;
  38
  39 protected:
  40   MMDSFragmentNotify() :
  41     MMDSOp{MSG_MDS_FRAGMENTNOTIFY, HEAD_VERSION, COMPAT_VERSION} {}
  42   MMDSFragmentNotify(dirfrag_t df, int b, uint64_t tid) :
  43     MMDSOp{MSG_MDS_FRAGMENTNOTIFY, HEAD_VERSION, COMPAT_VERSION},
  44     base_dirfrag(df), bits(b) {
  45     set_tid(tid);
  46   }
  47   ~MMDSFragmentNotify() final {}
  48
  49 public:
  50   std::string_view get_type_name() const override { return "fragment_notify"; }
  51   void print(std::ostream& o) const override {
  52     o << "fragment_notify(" << base_dirfrag << " " << (int)bits << ")";
  53   }
  54
  55   void encode_payload(uint64_t features) override {
  56     using ceph::encode;
  57     encode(base_dirfrag, payload);
  58     encode(bits, payload);
  59     encode(basebl, payload);
  60     encode(ack_wanted, payload);
  61   }
  62   void decode_payload() override {
  63     using ceph::decode;
  64     auto p = payload.cbegin();
  65     decode(base_dirfrag, p);
  66     decode(bits, p);
  67     decode(basebl, p);
  68     if (header.version >= 2)
  69       decode(ack_wanted, p);
  70   }
  71 private:
  72   template<class T, typename... Args>
  73   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  74 };
  75
  76 #endif