ceph/src/messages/MExportDirPrep.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_MEXPORTDIRPREP_H
  17 #define CEPH_MEXPORTDIRPREP_H
  18
  19 #include "msg/Message.h"
  20 #include "include/types.h"
  21
  22 class MExportDirPrep : public SafeMessage {
  23 private:
  24   static const int HEAD_VERSION = 1;
  25   static const int COMPAT_VERSION = 1;
  26
  27   dirfrag_t dirfrag;
  28  public:
  29   bufferlist basedir;
  30   list<dirfrag_t> bounds;
  31   list<bufferlist> traces;
  32 private:
  33   set<mds_rank_t> bystanders;
  34   bool b_did_assim = false;
  35
  36 public:
  37   dirfrag_t get_dirfrag() const { return dirfrag; }
  38   const list<dirfrag_t>& get_bounds() const { return bounds; }
  39   const set<mds_rank_t> &get_bystanders() const { return bystanders; }
  40
  41   bool did_assim() const { return b_did_assim; }
  42   void mark_assim() { b_did_assim = true; }
  43
  44 protected:
  45   MExportDirPrep() = default;
  46   MExportDirPrep(dirfrag_t df, uint64_t tid) :
  47     SafeMessage{MSG_MDS_EXPORTDIRPREP, HEAD_VERSION, COMPAT_VERSION},
  48     dirfrag(df)
  49   {
  50     set_tid(tid);
  51   }
  52   ~MExportDirPrep() override {}
  53
  54 public:
  55   std::string_view get_type_name() const override { return "ExP"; }
  56   void print(ostream& o) const override {
  57     o << "export_prep(" << dirfrag << ")";
  58   }
  59
  60   void add_bound(dirfrag_t df) {
  61     bounds.push_back( df );
  62   }
  63   void add_trace(bufferlist& bl) {
  64     traces.push_back(bl);
  65   }
  66   void add_bystander(mds_rank_t who) {
  67     bystanders.insert(who);
  68   }
  69
  70   void decode_payload() override {
  71     using ceph::decode;
  72     auto p = payload.cbegin();
  73     decode(dirfrag, p);
  74     decode(basedir, p);
  75     decode(bounds, p);
  76     decode(traces, p);
  77     decode(bystanders, p);
  78   }
  79
  80   void encode_payload(uint64_t features) override {
  81     using ceph::encode;
  82     encode(dirfrag, payload);
  83     encode(basedir, payload);
  84     encode(bounds, payload);
  85     encode(traces, payload);
  86     encode(bystanders, payload);
  87   }
  88 private:
  89   template<class T, typename... Args>
  90   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  91 };
  92
  93 #endif