ceph/src/messages/MMDSLoadTargets.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) 2009 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_MMDSLoadTargets_H
  16 #define CEPH_MMDSLoadTargets_H
  17
  18 #include "msg/Message.h"
  19 #include "mds/mdstypes.h"
  20 #include "messages/PaxosServiceMessage.h"
  21 #include "include/types.h"
  22
  23 #include <map>
  24 using std::map;
  25
  26 class MMDSLoadTargets : public MessageInstance<MMDSLoadTargets, PaxosServiceMessage> {
  27 public:
  28   friend factory;
  29
  30   mds_gid_t global_id;
  31   set<mds_rank_t> targets;
  32
  33 protected:
  34   MMDSLoadTargets() : MessageInstance(MSG_MDS_OFFLOAD_TARGETS, 0) {}
  35   MMDSLoadTargets(mds_gid_t g, set<mds_rank_t>& mds_targets) :
  36     MessageInstance(MSG_MDS_OFFLOAD_TARGETS, 0),
  37     global_id(g), targets(mds_targets) {}
  38   ~MMDSLoadTargets() override {}
  39
  40 public:
  41   std::string_view get_type_name() const override { return "mds_load_targets"; }
  42   void print(ostream& o) const override {
  43     o << "mds_load_targets(" << global_id << " " << targets << ")";
  44   }
  45
  46   void decode_payload() override {
  47     using ceph::decode;
  48     auto p = payload.cbegin();
  49     paxos_decode(p);
  50     decode(global_id, p);
  51     decode(targets, p);
  52   }
  53
  54   void encode_payload(uint64_t features) override {
  55     using ceph::encode;
  56     paxos_encode();
  57     encode(global_id, payload);
  58     encode(targets, payload);
  59   }
  60 };
  61
  62 #endif