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#include "querying.h"
#include "util/exception.hh"
#include "moses2/legacy/Util2.h"
using namespace std;
namespace probingpt
{
QueryEngine::QueryEngine(const char * filepath, util::LoadMethod load_method)
{
//Create filepaths
std::string basepath(filepath);
std::string path_to_config = basepath + "/config";
std::string path_to_hashtable = basepath + "/probing_hash.dat";
std::string path_to_source_vocabid = basepath + "/source_vocabids";
std::string alignPath = basepath + "/Alignments.dat";
file_exits(basepath);
///Source phrase vocabids
read_map(source_vocabids, path_to_source_vocabid.c_str());
// alignments
read_alignments(alignPath);
// target phrase
string targetCollPath = basepath + "/TargetColl.dat";
memTPS = readTable(targetCollPath.c_str(), load_method, fileTPS_, memoryTPS_);
//Read config file
boost::unordered_map<std::string, std::string> keyValue;
std::ifstream config(path_to_config.c_str());
std::string line;
while (getline(config, line)) {
std::vector<std::string> toks = Moses2::Tokenize(line, "\t");
UTIL_THROW_IF2(toks.size() != 2, "Wrong config format:" << line);
keyValue[ toks[0] ] = toks[1];
}
bool found;
//Check API version:
int version;
found = Get(keyValue, "API_VERSION", version);
if (!found) {
std::cerr << "Old or corrupted version of ProbingPT. Please rebinarize your phrase tables." << std::endl;
} else if (version != API_VERSION) {
std::cerr << "The ProbingPT API has changed. " << version << "!="
<< API_VERSION << " Please rebinarize your phrase tables." << std::endl;
exit(EXIT_FAILURE);
}
//Get tablesize.
int tablesize;
found = Get(keyValue, "uniq_entries", tablesize);
if (!found) {
std::cerr << "uniq_entries not found" << std::endl;
exit(EXIT_FAILURE);
}
//Number of scores
found = Get(keyValue, "num_scores", num_scores);
if (!found) {
std::cerr << "num_scores not found" << std::endl;
exit(EXIT_FAILURE);
}
//How may scores from lex reordering models
found = Get(keyValue, "num_lex_scores", num_lex_scores);
if (!found) {
std::cerr << "num_lex_scores not found" << std::endl;
exit(EXIT_FAILURE);
}
// have the scores been log() and FloorScore()?
found = Get(keyValue, "log_prob", logProb);
if (!found) {
std::cerr << "logProb not found" << std::endl;
exit(EXIT_FAILURE);
}
config.close();
//Read hashtable
table_filesize = Table::Size(tablesize, 1.2);
mem = readTable(path_to_hashtable.c_str(), load_method, file_, memory_);
Table table_init(mem, table_filesize);
table = table_init;
std::cerr << "Initialized successfully! " << std::endl;
}
QueryEngine::~QueryEngine()
{
//Clear mmap content from memory.
//munmap(mem, table_filesize);
}
uint64_t QueryEngine::getKey(uint64_t source_phrase[], size_t size) const
{
//TOO SLOW
//uint64_t key = util::MurmurHashNative(&source_phrase[0], source_phrase.size());
return probingpt::getKey(source_phrase, size);
}
std::pair<bool, uint64_t> QueryEngine::query(uint64_t key)
{
std::pair<bool, uint64_t> ret;
const Entry * entry;
ret.first = table.Find(key, entry);
if (ret.first) {
ret.second = entry->value;
}
return ret;
}
void QueryEngine::read_alignments(const std::string &alignPath)
{
std::ifstream strm(alignPath.c_str());
string line;
while (getline(strm, line)) {
vector<string> toks = Moses2::Tokenize(line, "\t ");
UTIL_THROW_IF2(toks.size() == 0, "Corrupt alignment file");
uint32_t alignInd = Moses2::Scan<uint32_t>(toks[0]);
if (alignInd >= alignColl.size()) {
alignColl.resize(alignInd + 1);
}
Alignments &aligns = alignColl[alignInd];
for (size_t i = 1; i < toks.size(); ++i) {
size_t pos = Moses2::Scan<size_t>(toks[i]);
aligns.push_back(pos);
}
}
}
void QueryEngine::file_exits(const std::string &basePath)
{
if (!Moses2::FileExists(basePath + "/Alignments.dat")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/Alignments.dat");
}
if (!Moses2::FileExists(basePath + "/TargetColl.dat")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/TargetColl.dat");
}
if (!Moses2::FileExists(basePath + "/TargetVocab.dat")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/TargetVocab.dat");
}
if (!Moses2::FileExists(basePath + "/cache")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/cache");
}
if (!Moses2::FileExists(basePath + "/config")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/config");
}
if (!Moses2::FileExists(basePath + "/probing_hash.dat")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/probing_hash.dat");
}
if (!Moses2::FileExists(basePath + "/source_vocabids")) {
UTIL_THROW2("Require file does not exist in: " << basePath << "/source_vocabids");
}
/*
if (!FileExists(path_to_config) || !FileExists(path_to_hashtable) ||
!FileExists(path_to_source_vocabid) || !FileExists(basepath + alignPath) ||
!FileExists(basepath + "/TargetColl.dat") || !FileExists(basepath + "/TargetVocab.dat") ||
!FileExists(basepath + "/cache")) {
UTIL_THROW2("A required table doesn't exist in: " << basepath);
}
*/
}
}
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