ceph/src/messages/MOSDECSubOpReadReply.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) 2013 Inktank Storage, Inc.
   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 MOSDECSUBOPREADREPLY_H
  16 #define MOSDECSUBOPREADREPLY_H
  17
  18 #include "MOSDFastDispatchOp.h"
  19 #include "osd/ECMsgTypes.h"
  20
  21 class MOSDECSubOpReadReply : public MOSDFastDispatchOp {
  22 private:
  23   static constexpr int HEAD_VERSION = 2;
  24   static constexpr int COMPAT_VERSION = 1;
  25
  26 public:
  27   spg_t pgid;
  28   epoch_t map_epoch = 0, min_epoch = 0;
  29   ECSubReadReply op;
  30
  31   int get_cost() const override {
  32     return 0;
  33   }
  34   epoch_t get_map_epoch() const override {
  35     return map_epoch;
  36   }
  37   epoch_t get_min_epoch() const override {
  38     return min_epoch;
  39   }
  40   spg_t get_spg() const override {
  41     return pgid;
  42   }
  43
  44   MOSDECSubOpReadReply()
  45     : MOSDFastDispatchOp{MSG_OSD_EC_READ_REPLY, HEAD_VERSION, COMPAT_VERSION}
  46     {}
  47
  48   void decode_payload() override {
  49     using ceph::decode;
  50     auto p = payload.cbegin();
  51     decode(pgid, p);
  52     decode(map_epoch, p);
  53     decode(op, p);
  54     if (header.version >= 2) {
  55       decode(min_epoch, p);
  56       decode_trace(p);
  57     } else {
  58       min_epoch = map_epoch;
  59     }
  60   }
  61
  62   void encode_payload(uint64_t features) override {
  63     using ceph::encode;
  64     encode(pgid, payload);
  65     encode(map_epoch, payload);
  66     encode(op, payload);
  67     encode(min_epoch, payload);
  68     encode_trace(payload, features);
  69   }
  70
  71   std::string_view get_type_name() const override { return "MOSDECSubOpReadReply"; }
  72
  73   void print(std::ostream& out) const override {
  74     out << "MOSDECSubOpReadReply(" << pgid
  75         << " " << map_epoch << "/" << min_epoch
  76         << " " << op;
  77     out << ")";
  78   }
  79 private:
  80   template<class T, typename... Args>
  81   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  82 };
  83
  84 #endif