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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 | #ifndef CEPH_MMONPROBE_H | |
17 | #define CEPH_MMONPROBE_H | |
18 | ||
19 | #include "include/ceph_features.h" | |
20 | #include "msg/Message.h" | |
21 | #include "mon/MonMap.h" | |
22 | ||
23 | class MMonProbe : public Message { | |
24 | public: | |
25 | static const int HEAD_VERSION = 6; | |
26 | static const int COMPAT_VERSION = 5; | |
27 | ||
28 | enum { | |
29 | OP_PROBE = 1, | |
30 | OP_REPLY = 2, | |
31 | OP_SLURP = 3, | |
32 | OP_SLURP_LATEST = 4, | |
33 | OP_DATA = 5, | |
34 | OP_MISSING_FEATURES = 6, | |
35 | }; | |
36 | ||
37 | static const char *get_opname(int o) { | |
38 | switch (o) { | |
39 | case OP_PROBE: return "probe"; | |
40 | case OP_REPLY: return "reply"; | |
41 | case OP_SLURP: return "slurp"; | |
42 | case OP_SLURP_LATEST: return "slurp_latest"; | |
43 | case OP_DATA: return "data"; | |
44 | case OP_MISSING_FEATURES: return "missing_features"; | |
45 | default: ceph_abort(); return 0; | |
46 | } | |
47 | } | |
48 | ||
49 | uuid_d fsid; | |
50 | int32_t op; | |
51 | string name; | |
52 | set<int32_t> quorum; | |
53 | bufferlist monmap_bl; | |
54 | version_t paxos_first_version; | |
55 | version_t paxos_last_version; | |
56 | bool has_ever_joined; | |
57 | uint64_t required_features; | |
58 | ||
59 | MMonProbe() | |
60 | : Message(MSG_MON_PROBE, HEAD_VERSION, COMPAT_VERSION) {} | |
61 | MMonProbe(const uuid_d& f, int o, const string& n, bool hej) | |
62 | : Message(MSG_MON_PROBE, HEAD_VERSION, COMPAT_VERSION), | |
63 | fsid(f), | |
64 | op(o), | |
65 | name(n), | |
66 | paxos_first_version(0), | |
67 | paxos_last_version(0), | |
68 | has_ever_joined(hej), | |
69 | required_features(0) {} | |
70 | private: | |
71 | ~MMonProbe() override {} | |
72 | ||
73 | public: | |
74 | const char *get_type_name() const override { return "mon_probe"; } | |
75 | void print(ostream& out) const override { | |
76 | out << "mon_probe(" << get_opname(op) << " " << fsid << " name " << name; | |
77 | if (quorum.size()) | |
78 | out << " quorum " << quorum; | |
79 | if (op == OP_REPLY) { | |
80 | out << " paxos(" | |
81 | << " fc " << paxos_first_version | |
82 | << " lc " << paxos_last_version | |
83 | << " )"; | |
84 | } | |
85 | if (!has_ever_joined) | |
86 | out << " new"; | |
87 | if (required_features) | |
88 | out << " required_features " << required_features; | |
89 | out << ")"; | |
90 | } | |
91 | ||
92 | void encode_payload(uint64_t features) override { | |
93 | if (monmap_bl.length() && | |
94 | ((features & CEPH_FEATURE_MONENC) == 0 || | |
95 | (features & CEPH_FEATURE_MSG_ADDR2) == 0)) { | |
96 | // reencode old-format monmap | |
97 | MonMap t; | |
98 | t.decode(monmap_bl); | |
99 | monmap_bl.clear(); | |
100 | t.encode(monmap_bl, features); | |
101 | } | |
102 | ||
103 | ::encode(fsid, payload); | |
104 | ::encode(op, payload); | |
105 | ::encode(name, payload); | |
106 | ::encode(quorum, payload); | |
107 | ::encode(monmap_bl, payload); | |
108 | ::encode(has_ever_joined, payload); | |
109 | ::encode(paxos_first_version, payload); | |
110 | ::encode(paxos_last_version, payload); | |
111 | ::encode(required_features, payload); | |
112 | } | |
113 | void decode_payload() override { | |
114 | bufferlist::iterator p = payload.begin(); | |
115 | ::decode(fsid, p); | |
116 | ::decode(op, p); | |
117 | ::decode(name, p); | |
118 | ::decode(quorum, p); | |
119 | ::decode(monmap_bl, p); | |
120 | ::decode(has_ever_joined, p); | |
121 | ::decode(paxos_first_version, p); | |
122 | ::decode(paxos_last_version, p); | |
123 | if (header.version >= 6) | |
124 | ::decode(required_features, p); | |
125 | else | |
126 | required_features = 0; | |
127 | } | |
128 | }; | |
129 | ||
130 | #endif |