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 "msg/Message.h"
  19
  20 class MExportDirNotify : public SafeMessage {
  21 private:
  22   static const int HEAD_VERSION = 1;
  23   static const int COMPAT_VERSION = 1;
  24
  25   dirfrag_t base;
  26   bool ack;
  27   pair<__s32,__s32> old_auth, new_auth;
  28   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   pair<__s32,__s32> get_old_auth() const { return old_auth; }
  33   pair<__s32,__s32> get_new_auth() const { return new_auth; }
  34   bool wants_ack() const { return ack; }
  35   const list<dirfrag_t>& get_bounds() const { return bounds; }
  36   list<dirfrag_t>& get_bounds() { return bounds; }
  37
  38 protected:
  39   MExportDirNotify() :
  40     SafeMessage{MSG_MDS_EXPORTDIRNOTIFY, HEAD_VERSION, COMPAT_VERSION} {}
  41   MExportDirNotify(dirfrag_t i, uint64_t tid, bool a, pair<__s32,__s32> oa, pair<__s32,__s32> na) :
  42     SafeMessage{MSG_MDS_EXPORTDIRNOTIFY, HEAD_VERSION, COMPAT_VERSION},
  43     base(i), ack(a), old_auth(oa), new_auth(na) {
  44     set_tid(tid);
  45   }
  46   ~MExportDirNotify() override {}
  47
  48 public:
  49   std::string_view get_type_name() const override { return "ExNot"; }
  50   void print(ostream& o) const override {
  51     o << "export_notify(" << base;
  52     o << " " << old_auth << " -> " << new_auth;
  53     if (ack)
  54       o << " ack)";
  55     else
  56       o << " no ack)";
  57   }
  58
  59   void copy_bounds(list<dirfrag_t>& ex) {
  60     this->bounds = ex;
  61   }
  62   void copy_bounds(set<dirfrag_t>& ex) {
  63     for (set<dirfrag_t>::iterator i = ex.begin();
  64          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     auto p = payload.cbegin();
  78     decode(base, p);
  79     decode(ack, p);
  80     decode(old_auth, p);
  81     decode(new_auth, p);
  82     decode(bounds, p);
  83   }
  84 private:
  85   template<class T, typename... Args>
  86   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  87 };
  88
  89 #endif