ceph/src/messages/MRoute.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
  16
  17 #ifndef CEPH_MROUTE_H
  18 #define CEPH_MROUTE_H
  19
  20 #include "msg/Message.h"
  21 #include "include/encoding.h"
  22
  23 class MRoute : public Message {
  24 public:
  25   static constexpr int HEAD_VERSION = 3;
  26   static constexpr int COMPAT_VERSION = 3;
  27
  28   uint64_t session_mon_tid;
  29   Message *msg;
  30   epoch_t send_osdmap_first;
  31
  32   MRoute() : Message{MSG_ROUTE, HEAD_VERSION, COMPAT_VERSION},
  33              session_mon_tid(0),
  34              msg(NULL),
  35              send_osdmap_first(0) {}
  36   MRoute(uint64_t t, Message *m)
  37     : Message{MSG_ROUTE, HEAD_VERSION, COMPAT_VERSION},
  38       session_mon_tid(t),
  39       msg(m),
  40       send_osdmap_first(0) {}
  41 private:
  42   ~MRoute() override {
  43     if (msg)
  44       msg->put();
  45   }
  46
  47 public:
  48   void decode_payload() override {
  49     auto p = payload.cbegin();
  50     decode(session_mon_tid, p);
  51     entity_inst_t dest_unused;
  52     decode(dest_unused, p);
  53     bool m;
  54     decode(m, p);
  55     if (m)
  56       msg = decode_message(NULL, 0, p);
  57     decode(send_osdmap_first, p);
  58   }
  59   void encode_payload(uint64_t features) override {
  60     using ceph::encode;
  61     encode(session_mon_tid, payload);
  62     entity_inst_t dest_unused;
  63     encode(dest_unused, payload, features);
  64     bool m = msg ? true : false;
  65     encode(m, payload);
  66     if (msg)
  67       encode_message(msg, features, payload);
  68     encode(send_osdmap_first, payload);
  69   }
  70
  71   std::string_view get_type_name() const override { return "route"; }
  72   void print(ostream& o) const override {
  73     if (msg)
  74       o << "route(" << *msg;
  75     else
  76       o << "route(no-reply";
  77     if (send_osdmap_first)
  78       o << " send_osdmap_first " << send_osdmap_first;
  79     if (session_mon_tid)
  80       o << " tid " << session_mon_tid << ")";
  81     else
  82       o << " tid (none)";
  83   }
  84 private:
  85   template<class T, typename... Args>
  86   friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
  87 };
  88
  89 #endif