wip
This commit is contained in:
Siarhei Fedartsou
parent
4046f9dfd3
commit
47488700c4
@ -1,5 +1,6 @@
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#ifndef OSRM_UPDATER_CSV_FILE_PARSER_HPP
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#define OSRM_UPDATER_CSV_FILE_PARSER_HPP
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#include "file_parser.hpp"
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#include <parquet/arrow/reader.h>
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#include <parquet/stream_reader.h>
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#include <arrow/io/file.h>
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@ -33,77 +34,20 @@ namespace updater
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// Key and Value structures must be a model of Random Access Sequence.
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// Also the Value structure must have source member that will be filled
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// with the corresponding file index in the CSV filenames vector.
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template <typename Key, typename Value> struct CSVFilesParser
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template <typename Key, typename Value> struct CSVFilesParser : public FilesParser<Key, Value>
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{
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using Iterator = boost::iostreams::mapped_file_source::iterator;
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using KeyRule = boost::spirit::qi::rule<Iterator, Key()>;
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using ValueRule = boost::spirit::qi::rule<Iterator, Value()>;
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CSVFilesParser(std::size_t start_index, const KeyRule &key_rule, const ValueRule &value_rule)
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: start_index(start_index), key_rule(key_rule), value_rule(value_rule)
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CSVFilesParser(const KeyRule &key_rule, const ValueRule &value_rule)
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: key_rule(key_rule), value_rule(value_rule)
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{
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}
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// Operator returns a lambda function that maps input Key to boost::optional<Value>.
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auto operator()(const std::vector<std::string> &csv_filenames) const
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{
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std::shared_ptr<arrow::io::ReadableFile> infile;
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PARQUET_ASSIGN_OR_THROW(
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infile,
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arrow::io::ReadableFile::Open("test.parquet"));
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parquet::StreamReader os{parquet::ParquetFileReader::Open(infile)};
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(void)os;
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try
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{
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tbb::spin_mutex mutex;
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std::vector<std::pair<Key, Value>> lookup;
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tbb::parallel_for(std::size_t{0}, csv_filenames.size(), [&](const std::size_t idx) {
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auto local = ParseCSVFile(csv_filenames[idx], start_index + idx);
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{ // Merge local CSV results into a flat global vector
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tbb::spin_mutex::scoped_lock _{mutex};
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lookup.insert(end(lookup),
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std::make_move_iterator(begin(local)),
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std::make_move_iterator(end(local)));
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}
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});
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// With flattened map-ish view of all the files, make a stable sort on key and source
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// and unique them on key to keep only the value with the largest file index
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// and the largest line number in a file.
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// The operands order is swapped to make descending ordering on (key, source)
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tbb::parallel_sort(begin(lookup), end(lookup), [](const auto &lhs, const auto &rhs) {
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return std::tie(rhs.first, rhs.second.source) <
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std::tie(lhs.first, lhs.second.source);
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});
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// Unique only on key to take the source precedence into account and remove duplicates.
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const auto it =
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std::unique(begin(lookup), end(lookup), [](const auto &lhs, const auto &rhs) {
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return lhs.first == rhs.first;
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});
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lookup.erase(it, end(lookup));
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util::Log() << "In total loaded " << csv_filenames.size() << " file(s) with a total of "
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<< lookup.size() << " unique values";
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return LookupTable<Key, Value>{lookup};
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}
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catch (const std::exception &e)
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// TBB should capture to std::exception_ptr and automatically rethrow in this thread.
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// https://software.intel.com/en-us/node/506317
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{
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throw util::exception(e.what() + SOURCE_REF);
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}
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}
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private:
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// Parse a single CSV file and return result as a vector<Key, Value>
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auto ParseCSVFile(const std::string &filename, std::size_t file_id) const
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std::vector<std::pair<Key, Value>> ParseFile(const std::string &filename, std::size_t file_id) const final
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{
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namespace qi = boost::spirit::qi;
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@ -147,7 +91,6 @@ std::shared_ptr<arrow::io::ReadableFile> infile;
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}
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}
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const std::size_t start_index;
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const KeyRule key_rule;
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const ValueRule value_rule;
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};
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106
include/updater/file_parser.hpp
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106
include/updater/file_parser.hpp
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#ifndef OSRM_UPDATER_FILE_PARSER_HPP
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#define OSRM_UPDATER_FILE_PARSER_HPP
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#include <parquet/arrow/reader.h>
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#include <parquet/stream_reader.h>
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#include <arrow/io/file.h>
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#include "updater/source.hpp"
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#include "util/exception.hpp"
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#include "util/exception_utils.hpp"
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#include "util/log.hpp"
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#include <tbb/parallel_for.h>
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#include <tbb/parallel_sort.h>
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#include <tbb/spin_mutex.h>
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#include <boost/exception/diagnostic_information.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/iostreams/device/mapped_file.hpp>
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#include <boost/spirit/include/phoenix.hpp>
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#include <boost/spirit/include/qi.hpp>
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#include <exception>
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#include <stdexcept>
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#include <vector>
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namespace osrm
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{
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namespace updater
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{
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// Functor to parse a list of CSV files using "key,value,comment" grammar.
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// Key and Value structures must be a model of Random Access Sequence.
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// Also the Value structure must have source member that will be filled
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// with the corresponding file index in the CSV filenames vector.
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template <typename Key, typename Value> struct FilesParser
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{
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virtual ~FilesParser() = default;
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// Operator returns a lambda function that maps input Key to boost::optional<Value>.
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auto operator()(const std::vector<std::string> &csv_filenames) const
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{
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// std::shared_ptr<arrow::io::ReadableFile> infile;
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// PARQUET_ASSIGN_OR_THROW(
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// infile,
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// arrow::io::ReadableFile::Open("test.parquet"));
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// parquet::StreamReader os{parquet::ParquetFileReader::Open(infile)};
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// (void)os;
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try
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{
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tbb::spin_mutex mutex;
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std::vector<std::pair<Key, Value>> lookup;
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tbb::parallel_for(std::size_t{0}, csv_filenames.size(), [&](const std::size_t idx) {
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// TODO: do we need this `1 + ` here?
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auto local = ParseFile(csv_filenames[idx], 1 + idx);
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{ // Merge local CSV results into a flat global vector
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tbb::spin_mutex::scoped_lock _{mutex};
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lookup.insert(end(lookup),
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std::make_move_iterator(begin(local)),
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std::make_move_iterator(end(local)));
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}
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});
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// With flattened map-ish view of all the files, make a stable sort on key and source
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// and unique them on key to keep only the value with the largest file index
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// and the largest line number in a file.
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// The operands order is swapped to make descending ordering on (key, source)
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tbb::parallel_sort(begin(lookup), end(lookup), [](const auto &lhs, const auto &rhs) {
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return std::tie(rhs.first, rhs.second.source) <
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std::tie(lhs.first, lhs.second.source);
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});
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// Unique only on key to take the source precedence into account and remove duplicates.
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const auto it =
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std::unique(begin(lookup), end(lookup), [](const auto &lhs, const auto &rhs) {
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return lhs.first == rhs.first;
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});
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lookup.erase(it, end(lookup));
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util::Log() << "In total loaded " << csv_filenames.size() << " file(s) with a total of "
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<< lookup.size() << " unique values";
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return LookupTable<Key, Value>{lookup};
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}
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catch (const std::exception &e)
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// TBB should capture to std::exception_ptr and automatically rethrow in this thread.
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// https://software.intel.com/en-us/node/506317
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{
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throw util::exception(e.what() + SOURCE_REF);
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}
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}
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protected:
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// Parse a single CSV file and return result as a vector<Key, Value>
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virtual std::vector<std::pair<Key, Value>> ParseFile(const std::string &filename, std::size_t file_id) const;
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};
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} // namespace updater
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} // namespace osrm
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#endif
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100
include/updater/parquet_file_parser.hpp
Normal file
100
include/updater/parquet_file_parser.hpp
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@ -0,0 +1,100 @@
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#ifndef OSRM_UPDATER_PARQUET_FILE_PARSER_HPP
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#define OSRM_UPDATER_PARQUET_FILE_PARSER_HPP
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#include "file_parser.hpp"
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#include <optional>
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#include <parquet/arrow/reader.h>
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#include <parquet/stream_reader.h>
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#include <arrow/io/file.h>
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#include "updater/source.hpp"
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#include "util/exception.hpp"
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#include "util/exception_utils.hpp"
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#include "util/log.hpp"
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#include <parquet/stream_writer.h>
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#include <tbb/parallel_for.h>
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#include <tbb/parallel_sort.h>
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#include <tbb/spin_mutex.h>
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#include <exception>
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#include <stdexcept>
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#include <vector>
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namespace osrm
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{
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namespace updater
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{
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// Functor to parse a list of CSV files using "key,value,comment" grammar.
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// Key and Value structures must be a model of Random Access Sequence.
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// Also the Value structure must have source member that will be filled
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// with the corresponding file index in the CSV filenames vector.
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template <typename Key, typename Value> struct ParquetFilesParser : public FilesParser<Key, Value>
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{
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private:
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// Parse a single CSV file and return result as a vector<Key, Value>
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std::vector<std::pair<Key, Value>> ParseFile(const std::string &filename, std::size_t file_id) const final
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{
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// TODO: error handling
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std::shared_ptr<arrow::io::ReadableFile> infile;
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PARQUET_ASSIGN_OR_THROW(
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infile,
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arrow::io::ReadableFile::Open(filename));
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parquet::StreamReader os{parquet::ParquetFileReader::Open(infile)};
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std::vector<std::pair<Key, Value>> result;
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while ( !os.eof() )
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{
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result.emplace_back(ReadKey(os), ReadValue(os, file_id));
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// ...
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}
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return result;
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// (void)os;
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}
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Key ReadKey(parquet::StreamReader &os) const
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{
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Key key;
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ReadKey(os, key);
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return key;
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}
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Value ReadValue(parquet::StreamReader &os, std::size_t file_id) const
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{
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Value value;
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ReadValue(os, value);
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value.source = file_id;
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return value;
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}
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void ReadKey(parquet::StreamReader &os, Turn& turn) const {
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os >> turn.from >> turn.via >> turn.to >> parquet::EndRow;
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}
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void ReadValue(parquet::StreamReader &os, PenaltySource& penalty_source) const {
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os >> penalty_source.duration >> penalty_source.weight >> parquet::EndRow;
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}
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void ReadKey(parquet::StreamReader &os, Segment& segment) const {
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os >> segment.from >> segment.to >> parquet::EndRow;
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}
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void ReadValue(parquet::StreamReader &os, SpeedSource& speed_source) const {
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std::optional<double> rate;
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os >> speed_source.speed >> rate >> parquet::EndRow;
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// TODO: boost::optional
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if (rate) {
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speed_source.rate = *rate;
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}
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// os >> turn.weight >> turn.duration >> turn.pre_turn_bearing >> turn.post_turn_bearing >> turn.source >> parquet::EndRow;
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}
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};
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} // namespace updater
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} // namespace osrm
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#endif
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@ -1,6 +1,7 @@
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#include "updater/csv_source.hpp"
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#include "updater/csv_file_parser.hpp"
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#include "updater/parquet_file_parser.hpp"
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#include <boost/fusion/adapted/std_pair.hpp>
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#include <boost/fusion/include/adapt_adt.hpp>
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@ -33,12 +34,9 @@ namespace csv
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{
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SegmentLookupTable readSegmentValues(const std::vector<std::string> &paths)
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{
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static const auto value_if_blank = std::numeric_limits<double>::quiet_NaN();
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const qi::real_parser<double, qi::ureal_policies<double>> unsigned_double;
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CSVFilesParser<Segment, SpeedSource> parser(
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1,
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qi::ulong_long >> ',' >> qi::ulong_long,
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unsigned_double >> -(',' >> (qi::double_ | qi::attr(value_if_blank))));
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//static const auto value_if_blank = std::numeric_limits<double>::quiet_NaN();
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//const qi::real_parser<double, qi::ureal_policies<double>> unsigned_double;
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ParquetFilesParser<Segment, SpeedSource> parser;
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// Check consistency of keys in the result lookup table
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auto result = parser(paths);
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@ -57,10 +55,7 @@ SegmentLookupTable readSegmentValues(const std::vector<std::string> &paths)
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TurnLookupTable readTurnValues(const std::vector<std::string> &paths)
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{
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CSVFilesParser<Turn, PenaltySource> parser(1,
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qi::ulong_long >> ',' >> qi::ulong_long >> ',' >>
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qi::ulong_long,
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qi::double_ >> -(',' >> qi::double_));
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ParquetFilesParser<Turn, PenaltySource> parser;
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return parser(paths);
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}
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} // namespace csv
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