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 "messages/MMDSOp.h"
  20
  21 class MExportDir final : public MMDSOp {
  22 public:
  23   dirfrag_t dirfrag;
  24   ceph::buffer::list export_data;
  25   std::vector<dirfrag_t> bounds;
  26   ceph::buffer::list client_map;
  27
  28 protected:
  29   MExportDir() : MMDSOp{MSG_MDS_EXPORTDIR} {}
  30   MExportDir(dirfrag_t df, uint64_t tid) :
  31     MMDSOp{MSG_MDS_EXPORTDIR}, dirfrag(df) {
  32     set_tid(tid);
  33   }
  34   ~MExportDir() final {}
  35
  36 public:
  37   std::string_view get_type_name() const override { return "Ex"; }
  38   void print(std::ostream& o) const override {
  39     o << "export(" << dirfrag << ")";
  40   }
  41
  42   void add_export(dirfrag_t df) {
  43     bounds.push_back(df);
  44   }
  45
  46   void encode_payload(uint64_t features) override {
  47     using ceph::encode;
  48     encode(dirfrag, payload);
  49     encode(bounds, payload);
  50     encode(export_data, payload);
  51     encode(client_map, payload);
  52   }
  53   void decode_payload() override {
  54     using ceph::decode;
  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   template<class T, typename... Args>
  65   friend MURef<T> crimson::make_message(Args&&... args);
  66 };
  67
  68 #endif