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#include "track_analyzing/log_parser.hpp"
#include "track_analyzing/exceptions.hpp"
#include "generator/borders_generator.hpp"
#include "generator/borders_loader.hpp"
#include "platform/platform.hpp"
#include "coding/file_name_utils.hpp"
#include "coding/hex.hpp"
#include "geometry/mercator.hpp"
#include "base/timer.hpp"
#include <cstdint>
#include <fstream>
#include <regex>
#include <unordered_set>
using namespace std;
using namespace track_analyzing;
namespace
{
vector<DataPoint> ReadDataPoints(string const & data)
{
string const decoded = FromHex(data);
vector<DataPoint> points;
MemReader memReader(decoded.data(), decoded.size());
ReaderSource<MemReader> src(memReader);
coding::TrafficGPSEncoder::DeserializeDataPoints(1 /* version */, src, points);
return points;
}
class PointToMwmId final
{
public:
PointToMwmId(shared_ptr<m4::Tree<routing::NumMwmId>> mwmTree,
routing::NumMwmIds const & numMwmIds, string const & dataDir)
: m_mwmTree(mwmTree)
{
numMwmIds.ForEachId([&](routing::NumMwmId numMwmId) {
string const & mwmName = numMwmIds.GetFile(numMwmId).GetName();
string const polyFile = base::JoinPath(dataDir, BORDERS_DIR, mwmName + BORDERS_EXTENSION);
osm::LoadBorders(polyFile, m_borders[numMwmId]);
});
}
routing::NumMwmId FindMwmId(m2::PointD const & point, routing::NumMwmId expectedId) const
{
if (expectedId != routing::kFakeNumMwmId && m2::RegionsContain(GetBorders(expectedId), point))
return expectedId;
routing::NumMwmId result = routing::kFakeNumMwmId;
m2::RectD const rect = MercatorBounds::RectByCenterXYAndSizeInMeters(point, 1);
m_mwmTree->ForEachInRect(rect, [&](routing::NumMwmId numMwmId) {
if (result == routing::kFakeNumMwmId && m2::RegionsContain(GetBorders(numMwmId), point))
result = numMwmId;
});
return result;
}
private:
vector<m2::RegionD> const & GetBorders(routing::NumMwmId numMwmId) const
{
auto it = m_borders.find(numMwmId);
CHECK(it != m_borders.cend(), ());
return it->second;
}
shared_ptr<m4::Tree<routing::NumMwmId>> m_mwmTree;
unordered_map<routing::NumMwmId, vector<m2::RegionD>> m_borders;
};
} // namespace
namespace track_analyzing
{
LogParser::LogParser(shared_ptr<routing::NumMwmIds> numMwmIds,
unique_ptr<m4::Tree<routing::NumMwmId>> mwmTree, string const & dataDir)
: m_numMwmIds(move(numMwmIds)), m_mwmTree(move(mwmTree)), m_dataDir(dataDir)
{
CHECK(m_numMwmIds, ());
CHECK(m_mwmTree, ());
}
void LogParser::Parse(string const & logFile, MwmToTracks & mwmToTracks) const
{
UserToTrack userToTrack;
ParseUserTracks(logFile, userToTrack);
SplitIntoMwms(userToTrack, mwmToTracks);
}
void LogParser::ParseUserTracks(string const & logFile, UserToTrack & userToTrack) const
{
base::Timer timer;
std::ifstream stream(logFile);
if (!stream)
MYTHROW(MessageException, ("Can't open file", logFile, "to parse tracks"));
std::regex const base_regex(R"(.*(DataV0|CurrentData)\s+aloha_id\s*:\s*(\S+)\s+.*\|(\w+)\|)");
std::unordered_set<string> usersWithOldVersion;
uint64_t linesCount = 0;
size_t pointsCount = 0;
for (string line; getline(stream, line); ++linesCount)
{
std::smatch base_match;
if (!std::regex_match(line, base_match, base_regex))
continue;
CHECK_EQUAL(base_match.size(), 4, ());
string const version = base_match[1].str();
string const userId = base_match[2].str();
string const data = base_match[3].str();
if (version != "CurrentData")
{
CHECK_EQUAL(version, "DataV0", ());
usersWithOldVersion.insert(userId);
continue;
}
auto const packet = ReadDataPoints(data);
if (!packet.empty())
{
Track & track = userToTrack[userId];
track.insert(track.end(), packet.cbegin(), packet.cend());
}
pointsCount += packet.size();
};
LOG(LINFO, ("Tracks parsing finished, elapsed:", timer.ElapsedSeconds(), "seconds, lines:",
linesCount, ", points", pointsCount));
LOG(LINFO, ("Users with current version:", userToTrack.size(), ", old version:",
usersWithOldVersion.size()));
}
void LogParser::SplitIntoMwms(UserToTrack const & userToTrack, MwmToTracks & mwmToTracks) const
{
base::Timer timer;
PointToMwmId const pointToMwmId(m_mwmTree, *m_numMwmIds, m_dataDir);
for (auto const & kv : userToTrack)
{
string const & user = kv.first;
Track const & track = kv.second;
routing::NumMwmId mwmId = routing::kFakeNumMwmId;
for (DataPoint const & point : track)
{
mwmId = pointToMwmId.FindMwmId(MercatorBounds::FromLatLon(point.m_latLon), mwmId);
if (mwmId != routing::kFakeNumMwmId)
mwmToTracks[mwmId][user].push_back(point);
else
LOG(LERROR, ("Can't match mwm region for", point.m_latLon, ", user:", user));
}
}
LOG(LINFO, ("Data was split into", mwmToTracks.size(), "mwms, elapsed:", timer.ElapsedSeconds(),
"seconds"));
}
} // namespace track_analyzing
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