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