ceph/src/messages/MExportDirNotify.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_MEXPORTDIRNOTIFY_H
  16 #define CEPH_MEXPORTDIRNOTIFY_H
  17
  18 #include "messages/MMDSOp.h"
  19
  20 class MExportDirNotify final : public MMDSOp {
  21 private:
  22   static constexpr int HEAD_VERSION = 1;
  23   static constexpr int COMPAT_VERSION = 1;
  24
  25   dirfrag_t base;
  26   bool ack;
  27   std::pair<__s32,__s32> old_auth, new_auth;
  28   std::list<dirfrag_t> bounds;  // bounds; these dirs are _not_ included (tho the dirfragdes are)
  29
  30  public:
  31   dirfrag_t get_dirfrag() const { return base; }
  32   std::pair<__s32,__s32> get_old_auth() const { return old_auth; }
  33   std::pair<__s32,__s32> get_new_auth() const { return new_auth; }
  34   bool wants_ack() const { return ack; }
  35   const std::list<dirfrag_t>& get_bounds() const { return bounds; }
  36   std::list<dirfrag_t>& get_bounds() { return bounds; }
  37
  38 protected:
  39   MExportDirNotify() :
  40     MMDSOp{MSG_MDS_EXPORTDIRNOTIFY, HEAD_VERSION, COMPAT_VERSION} {}
  41   MExportDirNotify(dirfrag_t i, uint64_t tid, bool a, std::pair<__s32,__s32> oa,
  42                    std::pair<__s32,__s32> na) :
  43     MMDSOp{MSG_MDS_EXPORTDIRNOTIFY, HEAD_VERSION, COMPAT_VERSION},
  44     base(i), ack(a), old_auth(oa), new_auth(na) {
  45     set_tid(tid);
  46   }
  47   ~MExportDirNotify() final {}
  48
  49 public:
  50   std::string_view get_type_name() const override { return "ExNot"; }
  51   void print(std::ostream& o) const override {
  52     o << "export_notify(" << base;
  53     o << " " << old_auth << " -> " << new_auth;
  54     if (ack)
  55       o << " ack)";
  56     else
  57       o << " no ack)";
  58   }
  59
  60   void copy_bounds(std::list<dirfrag_t>& ex) {
  61     this->bounds = ex;
  62   }
  63   void copy_bounds(std::set<dirfrag_t>& ex) {
  64     for (auto i = ex.begin(); i != ex.end(); ++i)
  65       bounds.push_back(*i);
  66   }
  67
  68   void encode_payload(uint64_t features) override {
  69     using ceph::encode;
  70     encode(base, payload);
  71     encode(ack, payload);
  72     encode(old_auth, payload);
  73     encode(new_auth, payload);
  74     encode(bounds, payload);
  75   }
  76   void decode_payload() override {
  77     using ceph::decode;
  78     auto p = payload.cbegin();
  79     decode(base, p);
  80     decode(ack, p);
  81     decode(old_auth, p);
  82     decode(new_auth, p);
  83     decode(bounds, p);
  84   }
  85 private:
  86   template<class T, typename... Args>
  87   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  88   template<class T, typename... Args>
  89   friend MURef<T> crimson::make_message(Args&&... args);
  90 };
  91
  92 #endif