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1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef COMPONENTS_RAPPOR_RAPPOR_PARAMETERS_H_ | |
6 #define COMPONENTS_RAPPOR_RAPPOR_PARAMETERS_H_ | |
7 | |
8 #include <string> | |
9 | |
10 namespace rappor { | |
11 | |
12 enum Probability { | |
13 PROBABILITY_75, // 75% | |
14 PROBABILITY_50, // 50% | |
15 }; | |
16 | |
17 // An object describing a rappor metric and the parameters used to generate it. | |
18 // | |
19 // For a full description of the rappor metrics, see | |
20 // http://www.chromium.org/developers/design-documents/rappor | |
21 struct RapporParameters { | |
22 // Get a string representing the parameters, for DCHECK_EQ. | |
23 std::string ToString() const; | |
24 | |
25 // The name of the metric. | |
26 std::string rappor_name; | |
27 | |
28 // The number of bytes stored in the Bloom filter. | |
29 int bloom_filter_size_bytes; | |
30 // The number of hash functions used in the Bloom filter. | |
31 int bloom_filter_hash_function_count; | |
32 | |
33 // The probability that a bit will be redacted with fake data. | |
34 Probability fake_prob; | |
35 // The probability that a fake bit will be a one. | |
36 Probability fake_one_prob; | |
37 | |
38 // The probability that a one bit in the redacted data reports as one. | |
39 Probability one_coin_prob; | |
40 // The probability that a zero bit in the redacted data reports as one. | |
41 Probability zero_coin_prob; | |
42 }; | |
43 | |
44 extern const RapporParameters kHomePageRapporParameters; | |
Alexei Svitkine (slow)
2014/02/04 19:20:12
Remove?
Steven Holte
2014/02/04 21:41:21
Done.
| |
45 | |
46 } // namespace rappor | |
47 | |
48 #endif // COMPONENTS_RAPPOR_RAPPOR_PARAMETERS_H_ | |
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