ceph/src/messages/MExportDir.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_MEXPORTDIR_H
  17 #define CEPH_MEXPORTDIR_H
  18
  19 #include "msg/Message.h"
  20
  21
  22 class MExportDir : public SafeMessage {
  23 public:
  24   dirfrag_t dirfrag;
  25   bufferlist export_data;
  26   vector<dirfrag_t> bounds;
  27   bufferlist client_map;
  28
  29 protected:
  30   MExportDir() : SafeMessage{MSG_MDS_EXPORTDIR} {}
  31   MExportDir(dirfrag_t df, uint64_t tid) :
  32     SafeMessage{MSG_MDS_EXPORTDIR}, dirfrag(df) {
  33     set_tid(tid);
  34   }
  35   ~MExportDir() override {}
  36
  37 public:
  38   std::string_view get_type_name() const override { return "Ex"; }
  39   void print(ostream& o) const override {
  40     o << "export(" << dirfrag << ")";
  41   }
  42
  43   void add_export(dirfrag_t df) {
  44     bounds.push_back(df);
  45   }
  46
  47   void encode_payload(uint64_t features) override {
  48     using ceph::encode;
  49     encode(dirfrag, payload);
  50     encode(bounds, payload);
  51     encode(export_data, payload);
  52     encode(client_map, payload);
  53   }
  54   void decode_payload() override {
  55     auto p = payload.cbegin();
  56     decode(dirfrag, p);
  57     decode(bounds, p);
  58     decode(export_data, p);
  59     decode(client_map, p);
  60   }
  61 private:
  62   template<class T, typename... Args>
  63   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  64 };
  65
  66 #endif