ceph/src/messages/MMDSSnapUpdate.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_MMDSSNAPUPDATE_H
  16 #define CEPH_MMDSSNAPUPDATE_H
  17
  18 #include "messages/MMDSOp.h"
  19
  20 class MMDSSnapUpdate final : public MMDSOp {
  21 private:
  22   inodeno_t ino;
  23   __s16 snap_op;
  24
  25 public:
  26   inodeno_t get_ino() const { return ino; }
  27   int get_snap_op() const { return snap_op; }
  28
  29   ceph::buffer::list snap_blob;
  30
  31 protected:
  32   MMDSSnapUpdate() : MMDSOp{MSG_MDS_SNAPUPDATE} {}
  33   MMDSSnapUpdate(inodeno_t i, version_t tid, int op) :
  34     MMDSOp{MSG_MDS_SNAPUPDATE}, ino(i), snap_op(op) {
  35       set_tid(tid);
  36     }
  37   ~MMDSSnapUpdate() final {}
  38
  39 public:
  40   std::string_view get_type_name() const override { return "snap_update"; }
  41   void print(std::ostream& o) const override {
  42     o << "snap_update(" << ino << " table_tid " << get_tid() << ")";
  43   }
  44
  45   void encode_payload(uint64_t features) override {
  46     using ceph::encode;
  47     encode(ino, payload);
  48     encode(snap_op, payload);
  49     encode(snap_blob, payload);
  50   }
  51   void decode_payload() override {
  52     using ceph::decode;
  53     auto p = payload.cbegin();
  54     decode(ino, p);
  55     decode(snap_op, p);
  56     decode(snap_blob, p);
  57   }
  58 private:
  59   template<class T, typename... Args>
  60   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  61   template<class T, typename... Args>
  62   friend MURef<T> crimson::make_message(Args&&... args);
  63 };
  64
  65 #endif