1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
module;
#include <boost/geometry.hpp>
#include <boost/json.hpp>
module routemon:api$impl;
import std;
import :api;
import :datex2;
import :geo;
import :gpx;
import :log;
import :req_ctx;
import :time;
import :trace;
namespace {
namespace chrono = std::chrono;
namespace json = boost::json;
namespace views = std::views;
} // namespace <anonymous>
namespace routemon::api {
auto json_value_from_point(geo::point const& p) -> json::value {
return json::array{bgeo::get<1>(p), bgeo::get<0>(p)};
}
auto json_value_from_linestring(geo::linestring const& ls) -> json::value {
json::array a;
for (auto const& p : ls)
a.push_back(json_value_from_point(p));
return a;
}
auto json_value_from_linestrings(std::vector<geo::linestring> const& lss) -> json::value {
json::array a;
for (auto const& ls : lss)
a.push_back(json_value_from_linestring(ls));
return a;
}
auto tag_invoke(json::value_from_tag, json::value& jv, relevant_road_closure const& clo) -> void {
jv = json::object{
{"relevant_lss", json_value_from_linestrings(clo.relevant_lss)},
};
}
auto tag_invoke(json::value_from_tag, json::value& jv, relevant_situation const& sit) -> void {
jv = json::object{
{"id", json::value_from(sit.id)},
{"location", sit.location ? json_value_from_point(*sit.location) : nullptr},
{"comments", json::value_from(sit.comments)},
{"relevant_road_closures", json::value_from(sit.relevant_road_closures)},
};
}
auto tag_invoke(json::value_from_tag, json::value& jv, track_segment const& seg) -> void {
jv = json::object{
{"points", json_value_from_linestring(seg.points)},
};
}
auto tag_invoke(json::value_from_tag, json::value& jv, track const& track) -> void {
jv = json::object{
{"segments", json::value_from(track.segments)},
};
}
auto tag_invoke(json::value_from_tag, json::value& jv, process_gpx_result const& res) -> void {
jv = json::object{
{"tracks", json::value_from(res.tracks)},
{"relevant_situations", json::value_from(res.relevant_situations)},
};
}
auto tag_invoke(json::value_from_tag, json::value& jv, sysinfo const& info) -> void {
jv = json::object{
{"using_publication_of", std::format("{:%FT%TZ}", info.using_publication_of)},
};
}
handler::handler(log::logger const& l, datex2::situation_publication pub)
: l_{l.sub("handler")}, pub_{std::move(pub)}
{
l_.info("Building indices");
auto const before_build = chrono::steady_clock::now();
for (auto const& sit : pub_.situations) {
for (auto const& rc : sit->road_closures) {
for (auto const& ls : rc->relevant_line_strings) {
auto box = geo::box{};
bgeo::envelope(*ls, box);
lse_index_.insert(std::make_tuple(box, ls, rc));
}
for (auto p : rc->relevant_points) {
p_index_.insert(std::make_pair(p, rc));
}
}
}
auto const after_build = chrono::steady_clock::now();
auto const dur_build = chrono::duration_cast<chrono::milliseconds>(after_build - before_build);
l_.info("Indices built in {}", dur_build);
l_.info("LSE index size: {}", lse_index_.size());
l_.info("Point index size: {}", p_index_.size());
}
auto handler::process_gpx(gpx::file&& gpx_file) -> std::optional<process_gpx_result> {
auto const now = chrono::utc_clock::now();
auto const relevant = std::initializer_list<time::period>{time::period{now - chrono::days(7), now + chrono::days(7)}};
auto const check_periods = time::period_seq{relevant.begin(), relevant.end()};
auto splits_with_overlap_segments = std::vector<geo::linestring>{};
for (auto const& track : gpx_file.tracks)
for (auto const& seg : track.segments)
geo::split_linestring_with_overlap_segments(seg.waypoints, 5000 /* meters max total dist until a new split is forced */,
splits_with_overlap_segments);
auto const before_query = chrono::steady_clock::now();
l_.debug("Querying for relevant situations");
auto relevant_road_closures = std::unordered_set<std::shared_ptr<datex2::road_closure>>{};
auto ls_checked = 0uz;
auto p_checked = 0uz;
auto i = 0;
for (geo::linestring const& part : splits_with_overlap_segments) {
l_.debug("Checking part [{}/{}]", ++i, splits_with_overlap_segments.size());
auto part_box = geo::box{};
bgeo::envelope(part, part_box);
for (auto it = lse_index_.qbegin(bgeo::index::intersects(part_box)); it != lse_index_.qend(); it++) {
// Cannot use structured bindings here, as boost::geometry::get interferes with ADL.
// It is a candidate as the namespace boost::geometry is part of the associated namespace set,
// which happens because geo::linestring ≡ boost::geometry::model::linestring<geo::point> is part
// of the whole tuple type (lse_index_value) that is the value_type of the iterator.
std::shared_ptr<geo::linestring> const& ls = std::get<1>(*it);
std::shared_ptr<datex2::road_closure> const& rc = std::get<2>(*it);
if (rc->validity && rc->validity->intersect(check_periods).periods().empty())
continue;
if (bgeo::distance(*ls, part, geo::vincenty_strategy{}) < 5.0)
relevant_road_closures.emplace(rc);
ls_checked++;
}
for (auto it = p_index_.qbegin(bgeo::index::intersects(part_box)); it != p_index_.qend(); it++) {
// Cannot use structured bindings here for the same reason as above.
geo::point const& p = std::get<0>(*it);
std::shared_ptr<datex2::road_closure> const& rc = std::get<1>(*it);
if (rc->validity && rc->validity->intersect(check_periods).periods().empty())
continue;
if (bgeo::distance(p, part, geo::vincenty_strategy{}) < 5.0)
relevant_road_closures.emplace(rc);
p_checked++;
}
}
auto const after_query = chrono::steady_clock::now();
l_.debug("Done (checked {} line string(s) and {} point(s)) in {}",
ls_checked, p_checked, chrono::duration_cast<chrono::milliseconds>(after_query - before_query));
auto relevant_situations = std::unordered_set<std::shared_ptr<datex2::situation>>{};
for (auto const& rc : relevant_road_closures)
relevant_situations.emplace(rc->parent);
l_.debug("Identified {} relevant road closure(s), part of {} unique situation(s)",
relevant_road_closures.size(), relevant_situations.size());
for (auto const& sit : relevant_situations)
l_.debug("Relevant situation: {}", sit->id);
return process_gpx_result{
.tracks = gpx_file.tracks
| views::transform([](auto const& trk) -> track {
return {
.segments = trk.segments
| views::transform([](auto const& seg) -> track_segment {
return {.points = seg.waypoints};
})
| std::ranges::to<std::vector<track_segment>>(),
};
})
| std::ranges::to<std::vector<track>>(),
.relevant_situations = relevant_situations
| views::transform([&](std::shared_ptr<datex2::situation> sit) -> relevant_situation {
return {
.id = sit->id,
.location = sit->location,
.comments = sit->comments,
.relevant_road_closures = relevant_road_closures
| views::filter([&](std::shared_ptr<datex2::road_closure> const& rc) -> bool {
return std::shared_ptr{rc->parent} == sit;
})
| views::transform([](std::shared_ptr<datex2::road_closure> const& rc) -> relevant_road_closure {
return {
.relevant_lss = rc->relevant_line_strings
| views::transform([](auto const& lsp) -> geo::linestring {
return *lsp;
})
| std::ranges::to<std::vector<geo::linestring>>(),
};
})
| std::ranges::to<std::vector<relevant_road_closure>>(),
};
})
| std::ranges::to<std::vector<relevant_situation>>(),
};
}
auto handler::sysinfo() -> struct sysinfo {
return {.using_publication_of = pub_.publication_time};
}
} // namespace routemon::api
|
