ceph/src/messages/MExportDirDiscoverAck.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_MEXPORTDIRDISCOVERACK_H
  16 #define CEPH_MEXPORTDIRDISCOVERACK_H
  17
  18 #include "msg/Message.h"
  19 #include "include/types.h"
  20
  21 class MExportDirDiscoverAck : public SafeMessage {
  22 private:
  23   static const int HEAD_VERSION = 1;
  24   static const int COMPAT_VERSION = 1;
  25
  26   dirfrag_t dirfrag;
  27   bool success;
  28
  29  public:
  30   inodeno_t get_ino() const { return dirfrag.ino; }
  31   dirfrag_t get_dirfrag() const { return dirfrag; }
  32   bool is_success() const { return success; }
  33
  34 protected:
  35   MExportDirDiscoverAck() : SafeMessage{MSG_MDS_EXPORTDIRDISCOVERACK, HEAD_VERSION, COMPAT_VERSION} {}
  36   MExportDirDiscoverAck(dirfrag_t df, uint64_t tid, bool s=true) :
  37     SafeMessage{MSG_MDS_EXPORTDIRDISCOVERACK, HEAD_VERSION, COMPAT_VERSION},
  38     dirfrag(df), success(s) {
  39     set_tid(tid);
  40   }
  41   ~MExportDirDiscoverAck() override {}
  42
  43 public:
  44   std::string_view get_type_name() const override { return "ExDisA"; }
  45   void print(ostream& o) const override {
  46     o << "export_discover_ack(" << dirfrag;
  47     if (success)
  48       o << " success)";
  49     else
  50       o << " failure)";
  51   }
  52
  53   void decode_payload() override {
  54     auto p = payload.cbegin();
  55     decode(dirfrag, p);
  56     decode(success, p);
  57   }
  58   void encode_payload(uint64_t features) override {
  59     using ceph::encode;
  60     encode(dirfrag, payload);
  61     encode(success, payload);
  62   }
  63 private:
  64   template<class T, typename... Args>
  65   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  66 };
  67
  68 #endif