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1 | /* |
2 | * SPDX-License-Identifier: MIT | |
3 | * | |
4 | * Copyright 2024 EfficiOS, Inc. | |
5 | */ | |
6 | ||
7 | #include "cpp-common/bt2/clock-class.hpp" | |
8 | #include "cpp-common/bt2/message.hpp" | |
9 | #include "cpp-common/bt2/wrap.hpp" | |
10 | ||
11 | #include "clock-correlation-validator.h" | |
12 | #include "clock-correlation-validator.hpp" | |
13 | ||
14 | namespace bt2ccv { | |
15 | ||
16 | void ClockCorrelationValidator::_validate(const bt2::ConstMessage msg) | |
17 | { | |
18 | bt2::OptionalBorrowedObject<bt2::ConstClockClass> clockCls; | |
19 | bt2::OptionalBorrowedObject<bt2::ConstStreamClass> streamCls; | |
20 | ||
21 | switch (msg.type()) { | |
22 | case bt2::MessageType::STREAM_BEGINNING: | |
23 | streamCls = msg.asStreamBeginning().stream().cls(); | |
24 | clockCls = streamCls->defaultClockClass(); | |
25 | break; | |
26 | ||
27 | case bt2::MessageType::MESSAGE_ITERATOR_INACTIVITY: | |
28 | clockCls = msg.asMessageIteratorInactivity().clockSnapshot().clockClass(); | |
29 | break; | |
30 | ||
31 | default: | |
32 | bt_common_abort(); | |
33 | } | |
34 | ||
35 | switch (_mExpectation) { | |
36 | case PropsExpectation::UNSET: | |
37 | /* | |
38 | * This is the first analysis of a message with a clock | |
39 | * snapshot: record the properties of that clock, against which | |
40 | * we'll compare the clock properties of the following messages. | |
41 | */ | |
42 | if (!clockCls) { | |
43 | _mExpectation = PropsExpectation::NONE; | |
44 | } else if (clockCls->originIsUnixEpoch()) { | |
45 | _mExpectation = PropsExpectation::ORIGIN_UNIX; | |
46 | } else if (const auto uuid = clockCls->uuid()) { | |
47 | _mExpectation = PropsExpectation::ORIGIN_OTHER_UUID; | |
48 | _mUuid = *uuid; | |
49 | } else { | |
50 | _mExpectation = PropsExpectation::ORIGIN_OTHER_NO_UUID; | |
51 | _mClockClass = clockCls->shared(); | |
52 | } | |
53 | ||
54 | break; | |
55 | ||
56 | case PropsExpectation::NONE: | |
57 | if (clockCls) { | |
58 | throw ClockCorrelationError { | |
59 | ClockCorrelationError::Type::EXPECTING_NO_CLOCK_CLASS_GOT_ONE, | |
60 | bt2s::nullopt, | |
61 | *clockCls, | |
62 | {}, | |
63 | streamCls}; | |
64 | } | |
65 | ||
66 | break; | |
67 | ||
68 | case PropsExpectation::ORIGIN_UNIX: | |
69 | if (!clockCls) { | |
70 | throw ClockCorrelationError { | |
71 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UNIX_GOT_NONE, | |
72 | bt2s::nullopt, | |
73 | {}, | |
74 | {}, | |
75 | streamCls}; | |
76 | } | |
77 | ||
78 | if (!clockCls->originIsUnixEpoch()) { | |
79 | throw ClockCorrelationError { | |
80 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UNIX_GOT_OTHER, | |
81 | bt2s::nullopt, | |
82 | *clockCls, | |
83 | {}, | |
84 | streamCls}; | |
85 | } | |
86 | ||
87 | break; | |
88 | ||
89 | case PropsExpectation::ORIGIN_OTHER_UUID: | |
90 | { | |
91 | if (!clockCls) { | |
92 | throw ClockCorrelationError { | |
93 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UUID_GOT_NONE, | |
94 | bt2s::nullopt, | |
95 | {}, | |
96 | {}, | |
97 | streamCls}; | |
98 | } | |
99 | ||
100 | if (clockCls->originIsUnixEpoch()) { | |
101 | throw ClockCorrelationError { | |
102 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UUID_GOT_UNIX, | |
103 | bt2s::nullopt, | |
104 | *clockCls, | |
105 | {}, | |
106 | streamCls}; | |
107 | } | |
108 | ||
109 | const auto uuid = clockCls->uuid(); | |
110 | ||
111 | if (!uuid) { | |
112 | throw ClockCorrelationError { | |
113 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UUID_GOT_NO_UUID, | |
114 | bt2s::nullopt, | |
115 | *clockCls, | |
116 | {}, | |
117 | streamCls}; | |
118 | } | |
119 | ||
120 | if (*uuid != _mUuid) { | |
121 | throw ClockCorrelationError { | |
122 | ClockCorrelationError::Type::EXPECTING_ORIGIN_UUID_GOT_OTHER_UUID, | |
123 | _mUuid, | |
124 | *clockCls, | |
125 | {}, | |
126 | streamCls}; | |
127 | } | |
128 | ||
129 | break; | |
130 | } | |
131 | ||
132 | case PropsExpectation::ORIGIN_OTHER_NO_UUID: | |
133 | if (!clockCls) { | |
134 | throw ClockCorrelationError { | |
135 | ClockCorrelationError::Type::EXPECTING_ORIGIN_NO_UUID_GOT_NONE, | |
136 | bt2s::nullopt, | |
137 | {}, | |
138 | {}, | |
139 | streamCls}; | |
140 | } | |
141 | ||
142 | if (clockCls->libObjPtr() != _mClockClass->libObjPtr()) { | |
143 | throw ClockCorrelationError { | |
144 | ClockCorrelationError::Type::EXPECTING_ORIGIN_NO_UUID_GOT_OTHER, bt2s::nullopt, | |
145 | *clockCls, *_mClockClass, streamCls}; | |
146 | } | |
147 | ||
148 | break; | |
149 | ||
150 | default: | |
151 | bt_common_abort(); | |
152 | } | |
153 | } | |
154 | ||
155 | } /* namespace bt2ccv */ | |
156 | ||
157 | bt_clock_correlation_validator *bt_clock_correlation_validator_create() noexcept | |
158 | { | |
159 | try { | |
160 | return reinterpret_cast<bt_clock_correlation_validator *>( | |
161 | new bt2ccv::ClockCorrelationValidator); | |
162 | } catch (const std::bad_alloc&) { | |
163 | return nullptr; | |
164 | } | |
165 | } | |
166 | ||
167 | bool bt_clock_correlation_validator_validate_message( | |
168 | bt_clock_correlation_validator * const validator, const bt_message * const msg, | |
169 | bt_clock_correlation_validator_error_type * const type, bt_uuid * const expectedUuidOut, | |
170 | const bt_clock_class ** const actualClockClsOut, | |
171 | const bt_clock_class ** const expectedClockClsOut) noexcept | |
172 | { | |
173 | try { | |
174 | reinterpret_cast<bt2ccv::ClockCorrelationValidator *>(validator)->validate(bt2::wrap(msg)); | |
175 | return true; | |
176 | } catch (const bt2ccv::ClockCorrelationError& error) { | |
177 | *type = static_cast<bt_clock_correlation_validator_error_type>(error.type()); | |
178 | ||
179 | if (error.expectedUuid()) { | |
180 | *expectedUuidOut = error.expectedUuid()->data(); | |
181 | } else { | |
182 | *expectedUuidOut = nullptr; | |
183 | } | |
184 | ||
185 | if (error.actualClockCls()) { | |
186 | *actualClockClsOut = error.actualClockCls()->libObjPtr(); | |
187 | } else { | |
188 | *actualClockClsOut = nullptr; | |
189 | } | |
190 | ||
191 | if (error.expectedClockCls()) { | |
192 | *expectedClockClsOut = error.expectedClockCls()->libObjPtr(); | |
193 | } else { | |
194 | *expectedClockClsOut = nullptr; | |
195 | } | |
196 | ||
197 | return false; | |
198 | } | |
199 | } | |
200 | ||
201 | void bt_clock_correlation_validator_destroy( | |
202 | bt_clock_correlation_validator * const validator) noexcept | |
203 | { | |
204 | delete reinterpret_cast<bt2ccv::ClockCorrelationValidator *>(validator); | |
205 | } |