ceph/src/messages/MOSDBackoff.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) 2017 Red Hat
   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_MOSDBACKOFF_H
  17 #define CEPH_MOSDBACKOFF_H
  18
  19 #include "MOSDFastDispatchOp.h"
  20 #include "osd/osd_types.h"
  21
  22 class MOSDBackoff : public MessageInstance<MOSDBackoff, MOSDFastDispatchOp> {
  23 public:
  24   friend factory;
  25
  26   static constexpr int HEAD_VERSION = 1;
  27   static constexpr int COMPAT_VERSION = 1;
  28
  29   spg_t pgid;
  30   epoch_t map_epoch = 0;
  31   uint8_t op = 0;           ///< CEPH_OSD_BACKOFF_OP_*
  32   uint64_t id = 0;          ///< unique id within this session
  33   hobject_t begin, end;     ///< [) range to block, unless ==, block single obj
  34
  35   spg_t get_spg() const override {
  36     return pgid;
  37   }
  38   epoch_t get_map_epoch() const override {
  39     return map_epoch;
  40   }
  41
  42   MOSDBackoff()
  43     : MessageInstance(CEPH_MSG_OSD_BACKOFF, HEAD_VERSION, COMPAT_VERSION) {}
  44   MOSDBackoff(spg_t pgid_, epoch_t ep, uint8_t op_, uint64_t id_,
  45               hobject_t begin_, hobject_t end_)
  46     : MessageInstance(CEPH_MSG_OSD_BACKOFF, HEAD_VERSION, COMPAT_VERSION),
  47       pgid(pgid_),
  48       map_epoch(ep),
  49       op(op_),
  50       id(id_),
  51       begin(begin_),
  52       end(end_) { }
  53
  54   void encode_payload(uint64_t features) override {
  55     using ceph::encode;
  56     encode(pgid, payload);
  57     encode(map_epoch, payload);
  58     encode(op, payload);
  59     encode(id, payload);
  60     encode(begin, payload);
  61     encode(end, payload);
  62   }
  63
  64   void decode_payload() override {
  65     auto p = payload.cbegin();
  66     decode(pgid, p);
  67     decode(map_epoch, p);
  68     decode(op, p);
  69     decode(id, p);
  70     decode(begin, p);
  71     decode(end, p);
  72   }
  73
  74   std::string_view get_type_name() const override { return "osd_backoff"; }
  75
  76   void print(ostream& out) const override {
  77     out << "osd_backoff(" << pgid << " " << ceph_osd_backoff_op_name(op)
  78         << " id " << id
  79         << " [" << begin << "," << end << ")"
  80         << " e" << map_epoch << ")";
  81   }
  82 };
  83
  84 #endif