ceph/src/messages/MOSDPing.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 #ifndef CEPH_MOSDPING_H
  16 #define CEPH_MOSDPING_H
  17
  18 #include "common/Clock.h"
  19
  20 #include "msg/Message.h"
  21 #include "osd/osd_types.h"
  22
  23
  24 class MOSDPing : public Message {
  25
  26   static const int HEAD_VERSION = 2;
  27   static const int COMPAT_VERSION = 2;
  28
  29  public:
  30   enum {
  31     HEARTBEAT = 0,
  32     START_HEARTBEAT = 1,
  33     YOU_DIED = 2,
  34     STOP_HEARTBEAT = 3,
  35     PING = 4,
  36     PING_REPLY = 5,
  37   };
  38   const char *get_op_name(int op) const {
  39     switch (op) {
  40     case HEARTBEAT: return "heartbeat";
  41     case START_HEARTBEAT: return "start_heartbeat";
  42     case STOP_HEARTBEAT: return "stop_heartbeat";
  43     case YOU_DIED: return "you_died";
  44     case PING: return "ping";
  45     case PING_REPLY: return "ping_reply";
  46     default: return "???";
  47     }
  48   }
  49
  50   uuid_d fsid;
  51   epoch_t map_epoch, peer_as_of_epoch;
  52   __u8 op;
  53   osd_peer_stat_t peer_stat;
  54   utime_t stamp;
  55
  56   MOSDPing(const uuid_d& f, epoch_t e, __u8 o, utime_t s)
  57     : Message(MSG_OSD_PING, HEAD_VERSION, COMPAT_VERSION),
  58       fsid(f), map_epoch(e), peer_as_of_epoch(0), op(o), stamp(s)
  59   { }
  60   MOSDPing()
  61     : Message(MSG_OSD_PING, HEAD_VERSION, COMPAT_VERSION)
  62   {}
  63 private:
  64   ~MOSDPing() override {}
  65
  66 public:
  67   void decode_payload() override {
  68     bufferlist::iterator p = payload.begin();
  69     ::decode(fsid, p);
  70     ::decode(map_epoch, p);
  71     ::decode(peer_as_of_epoch, p);
  72     ::decode(op, p);
  73     ::decode(peer_stat, p);
  74     ::decode(stamp, p);
  75   }
  76   void encode_payload(uint64_t features) override {
  77     ::encode(fsid, payload);
  78     ::encode(map_epoch, payload);
  79     ::encode(peer_as_of_epoch, payload);
  80     ::encode(op, payload);
  81     ::encode(peer_stat, payload);
  82     ::encode(stamp, payload);
  83   }
  84
  85   const char *get_type_name() const override { return "osd_ping"; }
  86   void print(ostream& out) const override {
  87     out << "osd_ping(" << get_op_name(op)
  88         << " e" << map_epoch
  89       //<< " as_of " << peer_as_of_epoch
  90         << " stamp " << stamp
  91         << ")";
  92   }
  93 };
  94
  95 #endif