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 * This is used to send pings between daemons (so far, the OSDs) for
18 * heartbeat purposes. We include a timestamp and distinguish between
19 * outgoing pings and responses to those. If you set the
20 * min_message in the constructor, the message will inflate itself
21 * to the specified size -- this is good for dealing with network
22 * issues with jumbo frames. See http://tracker.ceph.com/issues/20087
23 *
24 */
25
26 #ifndef CEPH_MOSDPING_H
27 #define CEPH_MOSDPING_H
28
29 #include "common/Clock.h"
30
31 #include "msg/Message.h"
32 #include "osd/osd_types.h"
33
34
35 class MOSDPing : public Message {
36 private:
37 static constexpr int HEAD_VERSION = 5;
38 static constexpr int COMPAT_VERSION = 4;
39
40 public:
41 enum {
42 HEARTBEAT = 0,
43 START_HEARTBEAT = 1,
44 YOU_DIED = 2,
45 STOP_HEARTBEAT = 3,
46 PING = 4,
47 PING_REPLY = 5,
48 };
49 const char *get_op_name(int op) const {
50 switch (op) {
51 case HEARTBEAT: return "heartbeat";
52 case START_HEARTBEAT: return "start_heartbeat";
53 case STOP_HEARTBEAT: return "stop_heartbeat";
54 case YOU_DIED: return "you_died";
55 case PING: return "ping";
56 case PING_REPLY: return "ping_reply";
57 default: return "???";
58 }
59 }
60
61 uuid_d fsid;
62 epoch_t map_epoch = 0;
63 __u8 op = 0;
64 utime_t ping_stamp; ///< when the PING was sent
65 ceph::signedspan mono_ping_stamp; ///< relative to sender's clock
66 ceph::signedspan mono_send_stamp; ///< replier's send stamp
67 std::optional<ceph::time_detail::signedspan> delta_ub; ///< ping sender
68 epoch_t up_from = 0;
69
70 uint32_t min_message_size = 0;
71
72 MOSDPing(const uuid_d& f, epoch_t e, __u8 o,
73 utime_t s,
74 ceph::signedspan ms,
75 ceph::signedspan mss,
76 epoch_t upf,
77 uint32_t min_message,
78 std::optional<ceph::time_detail::signedspan> delta_ub = {})
79 : Message{MSG_OSD_PING, HEAD_VERSION, COMPAT_VERSION},
80 fsid(f), map_epoch(e), op(o),
81 ping_stamp(s),
82 mono_ping_stamp(ms),
83 mono_send_stamp(mss),
84 delta_ub(delta_ub),
85 up_from(upf),
86 min_message_size(min_message)
87 { }
88 MOSDPing()
89 : Message{MSG_OSD_PING, HEAD_VERSION, COMPAT_VERSION}
|
(2) Event uninit_member: |
Non-static class member field "mono_ping_stamp.__r" is not initialized in this constructor nor in any functions that it calls. |
|
(4) Event uninit_member: |
Non-static class member field "mono_send_stamp.__r" is not initialized in this constructor nor in any functions that it calls. |
| Also see events: |
[member_decl][member_decl] |
90 {}
91 private:
92 ~MOSDPing() override {}
93
94 public:
95 void decode_payload() override {
96 auto p = payload.cbegin();
97 decode(fsid, p);
98 decode(map_epoch, p);
99 decode(op, p);
100 decode(ping_stamp, p);
101
102 int payload_mid_length = p.get_off();
103 uint32_t size;
104 decode(size, p);
105
106 if (header.version >= 5) {
107 decode(up_from, p);
108 decode(mono_ping_stamp, p);
109 decode(mono_send_stamp, p);
110 decode(delta_ub, p);
111 }
112
113 p.advance(size);
114 min_message_size = size + payload_mid_length;
115 }
116 void encode_payload(uint64_t features) override {
117 using ceph::encode;
118 encode(fsid, payload);
119 encode(map_epoch, payload);
120 encode(op, payload);
121 encode(ping_stamp, payload);
122
123 size_t s = 0;
124 if (min_message_size > payload.length()) {
125 s = min_message_size - payload.length();
126 }
127 encode((uint32_t)s, payload);
128
129 encode(up_from, payload);
130 encode(mono_ping_stamp, payload);
131 encode(mono_send_stamp, payload);
132 encode(delta_ub, payload);
133
134 if (s) {
135 // this should be big enough for normal min_message padding sizes. since
136 // we are targeting jumbo ethernet frames around 9000 bytes, 16k should
137 // be more than sufficient! the compiler will statically zero this so
138 // that at runtime we are only adding a bufferptr reference to it.
139 static char zeros[16384] = {};
140 while (s > sizeof(zeros)) {
141 payload.append(buffer::create_static(sizeof(zeros), zeros));
142 s -= sizeof(zeros);
143 }
144 if (s) {
145 payload.append(buffer::create_static(s, zeros));
146 }
147 }
148 }
149
150 std::string_view get_type_name() const override { return "osd_ping"; }
151 void print(ostream& out) const override {
152 out << "osd_ping(" << get_op_name(op)
153 << " e" << map_epoch
154 << " up_from " << up_from
155 << " ping_stamp " << ping_stamp << "/" << mono_ping_stamp
156 << " send_stamp " << mono_send_stamp;
157 if (delta_ub) {
158 out << " delta_ub " << *delta_ub;
159 }
160 out << ")";
161 }
162 private:
163 template<class T, typename... Args>
164 friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args);
165 };
166
167 #endif
168