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