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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) 2013 Inktank <info@inktank.com> | |
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 | #include "HitSet.h" | |
16 | #include "common/Formatter.h" | |
17 | ||
9f95a23c TL |
18 | using std::ostream; |
19 | using std::list; | |
20 | using ceph::Formatter; | |
21 | ||
7c673cae FG |
22 | // -- HitSet -- |
23 | ||
24 | HitSet::HitSet(const HitSet::Params& params) | |
25 | : sealed(false) | |
26 | { | |
27 | switch (params.get_type()) { | |
28 | case TYPE_BLOOM: | |
29 | { | |
30 | BloomHitSet::Params *p = | |
31 | static_cast<BloomHitSet::Params*>(params.impl.get()); | |
32 | impl.reset(new BloomHitSet(p)); | |
33 | } | |
34 | break; | |
35 | ||
36 | case TYPE_EXPLICIT_HASH: | |
37 | impl.reset(new ExplicitHashHitSet(static_cast<ExplicitHashHitSet::Params*>(params.impl.get()))); | |
38 | break; | |
39 | ||
40 | case TYPE_EXPLICIT_OBJECT: | |
41 | impl.reset(new ExplicitObjectHitSet(static_cast<ExplicitObjectHitSet::Params*>(params.impl.get()))); | |
42 | break; | |
43 | ||
44 | default: | |
45 | assert (0 == "unknown HitSet type"); | |
46 | } | |
47 | } | |
48 | ||
9f95a23c | 49 | void HitSet::encode(ceph::buffer::list &bl) const |
7c673cae FG |
50 | { |
51 | ENCODE_START(1, 1, bl); | |
11fdf7f2 | 52 | encode(sealed, bl); |
7c673cae | 53 | if (impl) { |
11fdf7f2 | 54 | encode((__u8)impl->get_type(), bl); |
7c673cae FG |
55 | impl->encode(bl); |
56 | } else { | |
11fdf7f2 | 57 | encode((__u8)TYPE_NONE, bl); |
7c673cae FG |
58 | } |
59 | ENCODE_FINISH(bl); | |
60 | } | |
61 | ||
9f95a23c | 62 | void HitSet::decode(ceph::buffer::list::const_iterator& bl) |
7c673cae FG |
63 | { |
64 | DECODE_START(1, bl); | |
11fdf7f2 | 65 | decode(sealed, bl); |
7c673cae | 66 | __u8 type; |
11fdf7f2 | 67 | decode(type, bl); |
7c673cae FG |
68 | switch ((impl_type_t)type) { |
69 | case TYPE_EXPLICIT_HASH: | |
70 | impl.reset(new ExplicitHashHitSet); | |
71 | break; | |
72 | case TYPE_EXPLICIT_OBJECT: | |
73 | impl.reset(new ExplicitObjectHitSet); | |
74 | break; | |
75 | case TYPE_BLOOM: | |
76 | impl.reset(new BloomHitSet); | |
77 | break; | |
78 | case TYPE_NONE: | |
79 | impl.reset(NULL); | |
80 | break; | |
81 | default: | |
9f95a23c | 82 | throw ceph::buffer::malformed_input("unrecognized HitMap type"); |
7c673cae FG |
83 | } |
84 | if (impl) | |
85 | impl->decode(bl); | |
86 | DECODE_FINISH(bl); | |
87 | } | |
88 | ||
89 | void HitSet::dump(Formatter *f) const | |
90 | { | |
91 | f->dump_string("type", get_type_name()); | |
92 | f->dump_string("sealed", sealed ? "yes" : "no"); | |
93 | if (impl) | |
94 | impl->dump(f); | |
95 | } | |
96 | ||
97 | void HitSet::generate_test_instances(list<HitSet*>& o) | |
98 | { | |
99 | o.push_back(new HitSet); | |
100 | o.push_back(new HitSet(new BloomHitSet(10, .1, 1))); | |
101 | o.back()->insert(hobject_t()); | |
102 | o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, "")); | |
103 | o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, "")); | |
104 | o.push_back(new HitSet(new ExplicitHashHitSet)); | |
105 | o.back()->insert(hobject_t()); | |
106 | o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, "")); | |
107 | o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, "")); | |
108 | o.push_back(new HitSet(new ExplicitObjectHitSet)); | |
109 | o.back()->insert(hobject_t()); | |
110 | o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, "")); | |
111 | o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, "")); | |
112 | } | |
113 | ||
11fdf7f2 | 114 | HitSet::Params::Params(const Params& o) noexcept |
7c673cae FG |
115 | { |
116 | if (o.get_type() != TYPE_NONE) { | |
117 | create_impl(o.get_type()); | |
118 | // it's annoying to write virtual operator= methods; use encode/decode | |
119 | // instead. | |
9f95a23c | 120 | ceph::buffer::list bl; |
7c673cae | 121 | o.impl->encode(bl); |
11fdf7f2 | 122 | auto p = bl.cbegin(); |
7c673cae FG |
123 | impl->decode(p); |
124 | } // else we don't need to do anything | |
125 | } | |
126 | ||
127 | const HitSet::Params& HitSet::Params::operator=(const Params& o) | |
128 | { | |
129 | create_impl(o.get_type()); | |
130 | if (o.impl) { | |
131 | // it's annoying to write virtual operator= methods; use encode/decode | |
132 | // instead. | |
9f95a23c | 133 | ceph::buffer::list bl; |
7c673cae | 134 | o.impl->encode(bl); |
11fdf7f2 | 135 | auto p = bl.cbegin(); |
7c673cae FG |
136 | impl->decode(p); |
137 | } | |
138 | return *this; | |
139 | } | |
140 | ||
9f95a23c | 141 | void HitSet::Params::encode(ceph::buffer::list &bl) const |
7c673cae FG |
142 | { |
143 | ENCODE_START(1, 1, bl); | |
144 | if (impl) { | |
11fdf7f2 | 145 | encode((__u8)impl->get_type(), bl); |
7c673cae FG |
146 | impl->encode(bl); |
147 | } else { | |
11fdf7f2 | 148 | encode((__u8)TYPE_NONE, bl); |
7c673cae FG |
149 | } |
150 | ENCODE_FINISH(bl); | |
151 | } | |
152 | ||
153 | bool HitSet::Params::create_impl(impl_type_t type) | |
154 | { | |
155 | switch ((impl_type_t)type) { | |
156 | case TYPE_EXPLICIT_HASH: | |
157 | impl.reset(new ExplicitHashHitSet::Params); | |
158 | break; | |
159 | case TYPE_EXPLICIT_OBJECT: | |
160 | impl.reset(new ExplicitObjectHitSet::Params); | |
161 | break; | |
162 | case TYPE_BLOOM: | |
163 | impl.reset(new BloomHitSet::Params); | |
164 | break; | |
165 | case TYPE_NONE: | |
166 | impl.reset(NULL); | |
167 | break; | |
168 | default: | |
169 | return false; | |
170 | } | |
171 | return true; | |
172 | } | |
173 | ||
9f95a23c | 174 | void HitSet::Params::decode(ceph::buffer::list::const_iterator& bl) |
7c673cae FG |
175 | { |
176 | DECODE_START(1, bl); | |
177 | __u8 type; | |
11fdf7f2 | 178 | decode(type, bl); |
7c673cae | 179 | if (!create_impl((impl_type_t)type)) |
9f95a23c | 180 | throw ceph::buffer::malformed_input("unrecognized HitMap type"); |
7c673cae FG |
181 | if (impl) |
182 | impl->decode(bl); | |
183 | DECODE_FINISH(bl); | |
184 | } | |
185 | ||
186 | void HitSet::Params::dump(Formatter *f) const | |
187 | { | |
188 | f->dump_string("type", HitSet::get_type_name(get_type())); | |
189 | if (impl) | |
190 | impl->dump(f); | |
191 | } | |
192 | ||
193 | void HitSet::Params::generate_test_instances(list<HitSet::Params*>& o) | |
194 | { | |
195 | #define loop_hitset_params(kind) \ | |
196 | { \ | |
197 | list<kind::Params*> params; \ | |
198 | kind::Params::generate_test_instances(params); \ | |
199 | for (list<kind::Params*>::iterator i = params.begin(); \ | |
200 | i != params.end(); ++i) \ | |
201 | o.push_back(new Params(*i)); \ | |
202 | } | |
203 | o.push_back(new Params); | |
204 | o.push_back(new Params(new BloomHitSet::Params)); | |
205 | loop_hitset_params(BloomHitSet); | |
206 | o.push_back(new Params(new ExplicitHashHitSet::Params)); | |
207 | loop_hitset_params(ExplicitHashHitSet); | |
208 | o.push_back(new Params(new ExplicitObjectHitSet::Params)); | |
209 | loop_hitset_params(ExplicitObjectHitSet); | |
210 | } | |
211 | ||
212 | ostream& operator<<(ostream& out, const HitSet::Params& p) { | |
213 | out << HitSet::get_type_name(p.get_type()); | |
214 | if (p.impl) { | |
215 | out << "{"; | |
216 | p.impl->dump_stream(out); | |
217 | } | |
218 | out << "}"; | |
219 | return out; | |
220 | } | |
221 | ||
222 | ||
223 | void ExplicitHashHitSet::dump(Formatter *f) const { | |
224 | f->dump_unsigned("insert_count", count); | |
225 | f->open_array_section("hash_set"); | |
226 | for (ceph::unordered_set<uint32_t>::const_iterator p = hits.begin(); | |
227 | p != hits.end(); | |
228 | ++p) | |
229 | f->dump_unsigned("hash", *p); | |
230 | f->close_section(); | |
231 | } | |
232 | ||
233 | void ExplicitObjectHitSet::dump(Formatter *f) const { | |
234 | f->dump_unsigned("insert_count", count); | |
235 | f->open_array_section("set"); | |
236 | for (ceph::unordered_set<hobject_t>::const_iterator p = hits.begin(); | |
237 | p != hits.end(); | |
238 | ++p) { | |
239 | f->open_object_section("object"); | |
240 | p->dump(f); | |
241 | f->close_section(); | |
242 | } | |
243 | f->close_section(); | |
244 | } | |
245 | ||
246 | void BloomHitSet::Params::dump(Formatter *f) const { | |
247 | f->dump_float("false_positive_probability", get_fpp()); | |
248 | f->dump_int("target_size", target_size); | |
249 | f->dump_int("seed", seed); | |
250 | } | |
251 | ||
252 | void BloomHitSet::dump(Formatter *f) const { | |
253 | f->open_object_section("bloom_filter"); | |
254 | bloom.dump(f); | |
255 | f->close_section(); | |
256 | } |