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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 | #ifndef CEPH_MBACKFILL_H | |
16 | #define CEPH_MBACKFILL_H | |
17 | ||
18 | #include "msg/Message.h" | |
11fdf7f2 | 19 | #include "messages/MOSDPeeringOp.h" |
7c673cae | 20 | |
11fdf7f2 TL |
21 | class MBackfillReserve : public MessageInstance<MBackfillReserve, MOSDPeeringOp> { |
22 | public: | |
23 | friend factory; | |
24 | private: | |
25 | static constexpr int HEAD_VERSION = 5; | |
26 | static constexpr int COMPAT_VERSION = 4; | |
7c673cae FG |
27 | public: |
28 | spg_t pgid; | |
29 | epoch_t query_epoch; | |
30 | enum { | |
11fdf7f2 TL |
31 | REQUEST = 0, // primary->replica: please reserve a slot |
32 | GRANT = 1, // replica->primary: ok, i reserved it | |
33 | REJECT = 2, // replica->primary: sorry, try again later (*) | |
34 | RELEASE = 3, // primary->replcia: release the slot i reserved before | |
35 | TOOFULL = 4, // replica->primary: too full, stop backfilling | |
36 | REVOKE = 5, // replica->primary: i'm taking back the slot i gave you | |
37 | // (*) NOTE: prior to luminous, REJECT was overloaded to also mean release | |
7c673cae FG |
38 | }; |
39 | uint32_t type; | |
40 | uint32_t priority; | |
11fdf7f2 TL |
41 | int64_t primary_num_bytes; |
42 | int64_t shard_num_bytes; | |
43 | ||
44 | spg_t get_spg() const { | |
45 | return pgid; | |
46 | } | |
47 | epoch_t get_map_epoch() const { | |
48 | return query_epoch; | |
49 | } | |
50 | epoch_t get_min_epoch() const { | |
51 | return query_epoch; | |
52 | } | |
53 | ||
54 | PGPeeringEvent *get_event() override { | |
55 | switch (type) { | |
56 | case REQUEST: | |
57 | return new PGPeeringEvent( | |
58 | query_epoch, | |
59 | query_epoch, | |
60 | RequestBackfillPrio(priority, primary_num_bytes, shard_num_bytes)); | |
61 | case GRANT: | |
62 | return new PGPeeringEvent( | |
63 | query_epoch, | |
64 | query_epoch, | |
65 | RemoteBackfillReserved()); | |
66 | case REJECT: | |
67 | // NOTE: this is replica -> primary "i reject your request" | |
68 | // and also primary -> replica "cancel my previously-granted request" | |
69 | // (for older peers) | |
70 | // and also replica -> primary "i revoke your reservation" | |
71 | // (for older peers) | |
72 | return new PGPeeringEvent( | |
73 | query_epoch, | |
74 | query_epoch, | |
75 | RemoteReservationRejected()); | |
76 | case RELEASE: | |
77 | return new PGPeeringEvent( | |
78 | query_epoch, | |
79 | query_epoch, | |
80 | RemoteReservationCanceled()); | |
81 | case TOOFULL: | |
82 | return new PGPeeringEvent( | |
83 | query_epoch, | |
84 | query_epoch, | |
85 | RemoteReservationRevokedTooFull()); | |
86 | case REVOKE: | |
87 | return new PGPeeringEvent( | |
88 | query_epoch, | |
89 | query_epoch, | |
90 | RemoteReservationRevoked()); | |
91 | default: | |
92 | ceph_abort(); | |
93 | } | |
94 | } | |
7c673cae FG |
95 | |
96 | MBackfillReserve() | |
11fdf7f2 TL |
97 | : MessageInstance(MSG_OSD_BACKFILL_RESERVE, HEAD_VERSION, COMPAT_VERSION), |
98 | query_epoch(0), type(-1), priority(-1), primary_num_bytes(0), | |
99 | shard_num_bytes(0) {} | |
7c673cae FG |
100 | MBackfillReserve(int type, |
101 | spg_t pgid, | |
11fdf7f2 TL |
102 | epoch_t query_epoch, unsigned prio = -1, |
103 | int64_t primary_num_bytes = 0, | |
104 | int64_t shard_num_bytes = 0) | |
105 | : MessageInstance(MSG_OSD_BACKFILL_RESERVE, HEAD_VERSION, COMPAT_VERSION), | |
7c673cae | 106 | pgid(pgid), query_epoch(query_epoch), |
11fdf7f2 TL |
107 | type(type), priority(prio), primary_num_bytes(primary_num_bytes), |
108 | shard_num_bytes(shard_num_bytes) {} | |
7c673cae | 109 | |
11fdf7f2 | 110 | std::string_view get_type_name() const override { |
7c673cae FG |
111 | return "MBackfillReserve"; |
112 | } | |
113 | ||
11fdf7f2 | 114 | void inner_print(ostream& out) const override { |
7c673cae FG |
115 | switch (type) { |
116 | case REQUEST: | |
11fdf7f2 | 117 | out << "REQUEST"; |
7c673cae FG |
118 | break; |
119 | case GRANT: | |
11fdf7f2 | 120 | out << "GRANT"; |
7c673cae FG |
121 | break; |
122 | case REJECT: | |
123 | out << "REJECT "; | |
124 | break; | |
11fdf7f2 TL |
125 | case RELEASE: |
126 | out << "RELEASE"; | |
127 | break; | |
128 | case TOOFULL: | |
129 | out << "TOOFULL"; | |
130 | break; | |
131 | case REVOKE: | |
132 | out << "REVOKE"; | |
133 | break; | |
7c673cae | 134 | } |
11fdf7f2 | 135 | if (type == REQUEST) out << " prio: " << priority; |
7c673cae FG |
136 | return; |
137 | } | |
138 | ||
139 | void decode_payload() override { | |
11fdf7f2 TL |
140 | auto p = payload.cbegin(); |
141 | decode(pgid.pgid, p); | |
142 | decode(query_epoch, p); | |
143 | decode(type, p); | |
144 | decode(priority, p); | |
145 | decode(pgid.shard, p); | |
146 | if (header.version >= 5) { | |
147 | decode(primary_num_bytes, p); | |
148 | decode(shard_num_bytes, p); | |
149 | } else { | |
150 | primary_num_bytes = 0; | |
151 | shard_num_bytes = 0; | |
152 | } | |
7c673cae FG |
153 | } |
154 | ||
155 | void encode_payload(uint64_t features) override { | |
11fdf7f2 TL |
156 | using ceph::encode; |
157 | if (!HAVE_FEATURE(features, RECOVERY_RESERVATION_2)) { | |
158 | header.version = 3; | |
159 | header.compat_version = 3; | |
160 | encode(pgid.pgid, payload); | |
161 | encode(query_epoch, payload); | |
162 | encode((type == RELEASE || type == TOOFULL || type == REVOKE) ? | |
163 | REJECT : type, payload); | |
164 | encode(priority, payload); | |
165 | encode(pgid.shard, payload); | |
166 | return; | |
167 | } | |
168 | header.version = HEAD_VERSION; | |
169 | header.compat_version = COMPAT_VERSION; | |
170 | encode(pgid.pgid, payload); | |
171 | encode(query_epoch, payload); | |
172 | encode(type, payload); | |
173 | encode(priority, payload); | |
174 | encode(pgid.shard, payload); | |
175 | encode(primary_num_bytes, payload); | |
176 | encode(shard_num_bytes, payload); | |
7c673cae FG |
177 | } |
178 | }; | |
179 | ||
180 | #endif |