ClickHouse/dbms/src/Interpreters/PartLog.cpp

#include <DB/Columns/ColumnsNumber.h>
#include <DB/Columns/ColumnArray.h>
#include <DB/Columns/ColumnString.h>
#include <DB/Columns/ColumnFixedString.h>
#include <DB/DataTypes/DataTypeArray.h>
#include <DB/DataTypes/DataTypesNumber.h>
#include <DB/DataTypes/DataTypeDateTime.h>
#include <DB/DataTypes/DataTypeDate.h>
#include <DB/DataTypes/DataTypeString.h>
#include <DB/DataTypes/DataTypeFixedString.h>
#include <DB/Interpreters/PartLog.h>
#include <DB/Common/ClickHouseRevision.h>
#include <Poco/Net/IPAddress.h>
#include <array>


namespace DB
{
Block PartLogElement::createBlock()
{
	return
	{
		{std::make_shared<ColumnUInt8>(),   std::make_shared<DataTypeUInt8>(),	  "event_type"},

		{std::make_shared<ColumnUInt16>(),  std::make_shared<DataTypeDate>(),	   "event_date"},
		{std::make_shared<ColumnUInt32>(),  std::make_shared<DataTypeDateTime>(),   "event_time"},

		{std::make_shared<ColumnUInt64>(),  std::make_shared<DataTypeUInt64>(),	 "size_in_bytes"},
		{std::make_shared<ColumnUInt64>(),  std::make_shared<DataTypeUInt64>(),	 "duration_ms"},

		{std::make_shared<ColumnString>(),  std::make_shared<DataTypeString>(),	 "database"},
		{std::make_shared<ColumnString>(),  std::make_shared<DataTypeString>(),	 "table"},
		{std::make_shared<ColumnString>(),  std::make_shared<DataTypeString>(),	 "part_name"},
		{std::make_shared<ColumnArray>(std::make_shared<ColumnString>()),
			std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>()),	"merged_from"},
  };
}


void PartLogElement::appendToBlock(Block & block) const
{
	size_t i = 0;

	block.getByPosition(i++).column->insert(UInt64(event_type));
	block.getByPosition(i++).column->insert(UInt64(DateLUT::instance().toDayNum(event_time)));
	block.getByPosition(i++).column->insert(UInt64(event_time));

	block.getByPosition(i++).column->insert(UInt64(size_in_bytes));
	block.getByPosition(i++).column->insert(UInt64(duration_ms));

	block.getByPosition(i++).column->insert(database_name);
	block.getByPosition(i++).column->insert(table_name);
	block.getByPosition(i++).column->insert(part_name);

	Array merged_from_array;
	merged_from_array.reserve(merged_from.size());
	for (const auto & name : merged_from)
		merged_from_array.push_back(name);
	block.getByPosition(i++).column->insert(merged_from_array);
}



}