ClickHouse/dbms/src/Interpreters/TraceLog.cpp

#include <Interpreters/TraceLog.h>
#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeDate.h>
#include <DataTypes/DataTypeDateTime.h>
#include <Common/ClickHouseRevision.h>


using namespace DB;

using TimerDataType = TraceLogElement::TimerDataType;

const TimerDataType::Values TraceLogElement::timer_values = {
    {"Real", static_cast<UInt8>(TimerType::Real)},
    {"CPU",  static_cast<UInt8>(TimerType::Cpu)}
};

Block TraceLogElement::createBlock()
{
    return
    {
        {std::make_shared<DataTypeDate>(),                                    "event_date"},
        {std::make_shared<DataTypeDateTime>(),                                "event_time"},
        {std::make_shared<DataTypeUInt32>(),                                  "revision"},
        {std::make_shared<TimerDataType>(timer_values),                       "timer_type"},
        {std::make_shared<DataTypeUInt32>(),                                  "thread_number"},
        {std::make_shared<DataTypeString>(),                                  "query_id"},
        {std::make_shared<DataTypeArray>(std::make_shared<DataTypeUInt64>()), "trace"}
    };
}

void TraceLogElement::appendToBlock(Block & block) const
{
    MutableColumns columns = block.mutateColumns();

    size_t i = 0;

    columns[i++]->insert(DateLUT::instance().toDayNum(event_time));
    columns[i++]->insert(event_time);
    columns[i++]->insert(ClickHouseRevision::get());
    columns[i++]->insert(static_cast<UInt8>(timer_type));
    columns[i++]->insert(thread_number);
    columns[i++]->insertData(query_id.data(), query_id.size());
    columns[i++]->insert(trace);

    block.setColumns(std::move(columns));
}