treender/server/src/checker.cpp

112 lines
2.9 KiB
C++

#include "sql.hpp"
#include <cstring>
#include <cstdio>
#include <thread>
#include <chrono>
#include "values/DnaManager.hpp"
void checker()
{
using namespace std::chrono_literals;
sqlite3 *db;
int rc = sql::open(DB_NAME, &db);
if (rc)
{
fprintf(stderr, "Can't open database: %s\n", sql::errmsg(db));
}
sqlite3_stmt *get_unchecked_stmt;
sql::prepare_v2(db, get_unchecked, -1, &get_unchecked_stmt, NULL);
sqlite3_stmt *get_gen_stmt;
sql::prepare_v2(db, get_gen, -1, &get_gen_stmt, NULL);
sqlite3_stmt *remove_gen_stmt;
sql::prepare_v2(db, remove_gen, -1, &remove_gen_stmt, NULL);
sqlite3_stmt *set_checked_stmt;
sql::prepare_v2(db, set_checked, -1, &set_checked_stmt, NULL);
while (true)
{
int64_t user_id = 0;
if (sql::step(get_unchecked_stmt) != SQL_DONE)
{
int type = sql::column_type(get_unchecked_stmt, 0);
if (type != SQL_NULL)
{
user_id = sql::column_int64(get_unchecked_stmt, 0);
}
}
sql::reset(get_unchecked_stmt);
if (user_id == 0)
{
std::this_thread::sleep_for(60s);
continue;
}
DnaManagerData data;
data.id = user_id;
data.randSeed = mrand::getState(data.id);
data.queued = 0;
data.showed = 0;
data.generation = 0;
data.vector.resize(NUM_PER_GEN);
for (std::size_t i = 0; i < NUM_PER_GEN; i++)
{
DNA::newDna(&data.vector[i], &data.randSeed);
}
bool found_err = false;
while (found_err != true)
{
sql::bind_int64(get_gen_stmt, 1, data.id);
sql::bind_int64(get_gen_stmt, 2, data.generation);
bool new_gen = false;
while (sql::step(get_gen_stmt) != SQL_DONE)
{
int64_t hash = sql::column_int64(get_gen_stmt, 0);
int64_t pos = sql::column_int64(get_gen_stmt, 1);
int64_t liked = sql::column_int64(get_gen_stmt, 2);
UiUnit unit = DnaManager::next(&data);
int64_t cal_hash = mrand::computeCRC32(unit.dna, sizeof(Dna));
if ((unit.index != pos) || (hash != cal_hash))
{
found_err = true;
sql::bind_int64(remove_gen_stmt, 1, data.id);
sql::bind_int64(remove_gen_stmt, 2, data.generation);
sql::step(remove_gen_stmt);
sql::reset(remove_gen_stmt);
break;
}
unit.liked = (Liked)liked;
new_gen = DnaManager::like(unit, &data);
}
if (!found_err)
{
sql::bind_int64(set_checked_stmt, 1, data.id);
sql::bind_int64(set_checked_stmt, 2, data.generation);
sql::step(set_checked_stmt);
sql::reset(set_checked_stmt);
}
if (!new_gen)
{
found_err = true;
sql::bind_int64(remove_gen_stmt, 1, data.id);
sql::bind_int64(remove_gen_stmt, 2, data.generation);
sql::step(remove_gen_stmt);
sql::reset(remove_gen_stmt);
}
else
{
DnaManager::newGen(&data);
}
sql::reset(get_gen_stmt);
}
}
}