mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-11 18:14:03 +00:00
429 lines
10 KiB
C++
429 lines
10 KiB
C++
#pragma once
|
||
|
||
#include <DB/Core/Field.h>
|
||
#include <Poco/Timespan.h>
|
||
|
||
|
||
namespace DB
|
||
{
|
||
|
||
|
||
/** Одна настройка какого-либо типа.
|
||
* Хранит внутри себя значение, а также флаг - было ли значение изменено.
|
||
* Это сделано, чтобы можно было отправлять на удалённые серверы только изменённые (или явно указанные в конфиге) значения.
|
||
* То есть, если настройка не была указана в конфиге и не была изменена динамически, то она не отправляется на удалённый сервер,
|
||
* и удалённый сервер будет использовать своё значение по-умолчанию.
|
||
*/
|
||
|
||
|
||
struct SettingUInt64
|
||
{
|
||
UInt64 value;
|
||
bool changed = false;
|
||
|
||
SettingUInt64(UInt64 x = 0) : value(x) {}
|
||
|
||
operator UInt64() const { return value; }
|
||
SettingUInt64 & operator= (UInt64 x) { set(x); return *this; }
|
||
|
||
void set(UInt64 x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<UInt64>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(parse<UInt64>(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
UInt64 x = 0;
|
||
readVarUInt(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeVarUInt(value, buf);
|
||
}
|
||
};
|
||
|
||
typedef SettingUInt64 SettingBool;
|
||
|
||
|
||
struct SettingSeconds
|
||
{
|
||
Poco::Timespan value;
|
||
bool changed = false;
|
||
|
||
SettingSeconds(UInt64 seconds = 0) : value(seconds, 0) {}
|
||
|
||
operator Poco::Timespan() const { return value; }
|
||
SettingSeconds & operator= (Poco::Timespan x) { set(x); return *this; }
|
||
|
||
Poco::Timespan::TimeDiff totalSeconds() const { return value.totalSeconds(); }
|
||
|
||
void set(Poco::Timespan x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(UInt64 x)
|
||
{
|
||
set(Poco::Timespan(x, 0));
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<UInt64>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(parse<UInt64>(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
UInt64 x = 0;
|
||
readVarUInt(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeVarUInt(value.totalSeconds(), buf);
|
||
}
|
||
};
|
||
|
||
|
||
struct SettingMilliseconds
|
||
{
|
||
Poco::Timespan value;
|
||
bool changed = false;
|
||
|
||
SettingMilliseconds(UInt64 milliseconds = 0) : value(milliseconds * 1000) {}
|
||
|
||
operator Poco::Timespan() const { return value; }
|
||
SettingMilliseconds & operator= (Poco::Timespan x) { set(x); return *this; }
|
||
|
||
Poco::Timespan::TimeDiff totalMilliseconds() const { return value.totalMilliseconds(); }
|
||
|
||
void set(Poco::Timespan x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(UInt64 x)
|
||
{
|
||
set(Poco::Timespan(x * 1000));
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<UInt64>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(parse<UInt64>(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
UInt64 x = 0;
|
||
readVarUInt(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeVarUInt(value.totalMilliseconds(), buf);
|
||
}
|
||
};
|
||
|
||
|
||
struct SettingFloat
|
||
{
|
||
float value;
|
||
bool changed = false;
|
||
|
||
SettingFloat(float x = 0) : value(x) {}
|
||
|
||
operator float() const { return value; }
|
||
SettingFloat & operator= (float x) { set(x); return *this; }
|
||
|
||
void set(float x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
if (x.getType() == Field::Types::UInt64)
|
||
{
|
||
set(safeGet<UInt64>(x));
|
||
}
|
||
else if (x.getType() == Field::Types::Int64)
|
||
{
|
||
set(safeGet<Int64>(x));
|
||
}
|
||
else if (x.getType() == Field::Types::Float64)
|
||
{
|
||
set(safeGet<Float64>(x));
|
||
}
|
||
else
|
||
throw Exception(std::string("Bad type of setting. Expected UInt64, Int64 or Float64, got ") + x.getTypeName(), ErrorCodes::TYPE_MISMATCH);
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(parse<float>(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
String x;
|
||
readBinary(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeBinary(toString(value), buf);
|
||
}
|
||
};
|
||
|
||
|
||
enum class LoadBalancing
|
||
{
|
||
/// среди реплик с минимальным количеством ошибок выбирается случайная
|
||
RANDOM = 0,
|
||
/// среди реплик с минимальным количеством ошибок выбирается реплика
|
||
/// с минимальным количеством отличающихся символов в имени реплики и имени локального хоста
|
||
NEAREST_HOSTNAME
|
||
};
|
||
|
||
struct SettingLoadBalancing
|
||
{
|
||
LoadBalancing value;
|
||
bool changed = false;
|
||
|
||
SettingLoadBalancing(LoadBalancing x) : value(x) {}
|
||
|
||
operator LoadBalancing() const { return value; }
|
||
SettingLoadBalancing & operator= (LoadBalancing x) { set(x); return *this; }
|
||
|
||
static LoadBalancing getLoadBalancing(const String & s)
|
||
{
|
||
if (s == "random") return LoadBalancing::RANDOM;
|
||
if (s == "nearest_hostname") return LoadBalancing::NEAREST_HOSTNAME;
|
||
|
||
throw Exception("Unknown load balancing mode: '" + s + "', must be one of 'random', 'nearest_hostname'", ErrorCodes::UNKNOWN_LOAD_BALANCING);
|
||
}
|
||
|
||
String toString() const
|
||
{
|
||
const char * strings[] = {"random", "nearest_hostname"};
|
||
if (value < LoadBalancing::RANDOM || value > LoadBalancing::NEAREST_HOSTNAME)
|
||
throw Exception("Unknown load balancing mode", ErrorCodes::UNKNOWN_OVERFLOW_MODE);
|
||
return strings[static_cast<size_t>(value)];
|
||
}
|
||
|
||
void set(LoadBalancing x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<const String &>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(getLoadBalancing(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
String x;
|
||
readBinary(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeBinary(toString(), buf);
|
||
}
|
||
};
|
||
|
||
|
||
/// Какие строки включать в TOTALS.
|
||
enum class TotalsMode
|
||
{
|
||
BEFORE_HAVING = 0, /// Считать HAVING по всем прочитанным строкам;
|
||
/// включая не попавшие в max_rows_to_group_by
|
||
/// и не прошедшие HAVING после группировки.
|
||
AFTER_HAVING_INCLUSIVE = 1, /// Считать по всем строкам, кроме не прошедших HAVING;
|
||
/// то есть, включать в TOTALS все строки, не прошедшие max_rows_to_group_by.
|
||
AFTER_HAVING_EXCLUSIVE = 2, /// Включать только строки, прошедшие и max_rows_to_group_by, и HAVING.
|
||
AFTER_HAVING_AUTO = 3, /// Автоматически выбирать между INCLUSIVE и EXCLUSIVE,
|
||
};
|
||
|
||
struct SettingTotalsMode
|
||
{
|
||
TotalsMode value;
|
||
bool changed = false;
|
||
|
||
SettingTotalsMode(TotalsMode x) : value(x) {}
|
||
|
||
operator TotalsMode() const { return value; }
|
||
SettingTotalsMode & operator= (TotalsMode x) { set(x); return *this; }
|
||
|
||
static TotalsMode getTotalsMode(const String & s)
|
||
{
|
||
if (s == "before_having") return TotalsMode::BEFORE_HAVING;
|
||
if (s == "after_having_exclusive") return TotalsMode::AFTER_HAVING_EXCLUSIVE;
|
||
if (s == "after_having_inclusive") return TotalsMode::AFTER_HAVING_INCLUSIVE;
|
||
if (s == "after_having_auto") return TotalsMode::AFTER_HAVING_AUTO;
|
||
|
||
throw Exception("Unknown totals mode: '" + s + "', must be one of 'before_having', 'after_having_exclusive', 'after_having_inclusive', 'after_having_auto'", ErrorCodes::UNKNOWN_TOTALS_MODE);
|
||
}
|
||
|
||
String toString() const
|
||
{
|
||
switch (value)
|
||
{
|
||
case TotalsMode::BEFORE_HAVING: return "before_having";
|
||
case TotalsMode::AFTER_HAVING_EXCLUSIVE: return "after_having_exclusive";
|
||
case TotalsMode::AFTER_HAVING_INCLUSIVE: return "after_having_inclusive";
|
||
case TotalsMode::AFTER_HAVING_AUTO: return "after_having_auto";
|
||
|
||
default:
|
||
throw Exception("Unknown TotalsMode enum value", ErrorCodes::ARGUMENT_OUT_OF_BOUND);
|
||
}
|
||
}
|
||
|
||
void set(TotalsMode x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<const String &>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(getTotalsMode(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
String x;
|
||
readBinary(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeBinary(toString(), buf);
|
||
}
|
||
};
|
||
|
||
/// Что делать, если ограничение превышено.
|
||
enum class OverflowMode
|
||
{
|
||
THROW = 0, /// Кинуть исключение.
|
||
BREAK = 1, /// Прервать выполнение запроса, вернуть что есть.
|
||
ANY = 2, /** Только для GROUP BY: не добавлять новые строки в набор,
|
||
* но продолжать агрегировать для ключей, успевших попасть в набор.
|
||
*/
|
||
};
|
||
|
||
template <bool enable_mode_any>
|
||
struct SettingOverflowMode
|
||
{
|
||
OverflowMode value;
|
||
bool changed = false;
|
||
|
||
SettingOverflowMode(OverflowMode x = OverflowMode::THROW) : value(x) {}
|
||
|
||
operator OverflowMode() const { return value; }
|
||
SettingOverflowMode & operator= (OverflowMode x) { set(x); return *this; }
|
||
|
||
static OverflowMode getOverflowModeForGroupBy(const String & s)
|
||
{
|
||
if (s == "throw") return OverflowMode::THROW;
|
||
if (s == "break") return OverflowMode::BREAK;
|
||
if (s == "any") return OverflowMode::ANY;
|
||
|
||
throw Exception("Unknown overflow mode: '" + s + "', must be one of 'throw', 'break', 'any'", ErrorCodes::UNKNOWN_OVERFLOW_MODE);
|
||
}
|
||
|
||
static OverflowMode getOverflowMode(const String & s)
|
||
{
|
||
OverflowMode mode = getOverflowModeForGroupBy(s);
|
||
|
||
if (mode == OverflowMode::ANY && !enable_mode_any)
|
||
throw Exception("Illegal overflow mode: 'any' is only for 'group_by_overflow_mode'", ErrorCodes::ILLEGAL_OVERFLOW_MODE);
|
||
|
||
return mode;
|
||
}
|
||
|
||
String toString() const
|
||
{
|
||
const char * strings[] = { "throw", "break", "any" };
|
||
|
||
if (value < OverflowMode::THROW || value > OverflowMode::ANY)
|
||
throw Exception("Unknown overflow mode", ErrorCodes::UNKNOWN_OVERFLOW_MODE);
|
||
|
||
return strings[static_cast<size_t>(value)];
|
||
}
|
||
|
||
void set(OverflowMode x)
|
||
{
|
||
value = x;
|
||
changed = true;
|
||
}
|
||
|
||
void set(const Field & x)
|
||
{
|
||
set(safeGet<const String &>(x));
|
||
}
|
||
|
||
void set(const String & x)
|
||
{
|
||
set(getOverflowMode(x));
|
||
}
|
||
|
||
void set(ReadBuffer & buf)
|
||
{
|
||
String x;
|
||
readBinary(x, buf);
|
||
set(x);
|
||
}
|
||
|
||
void write(WriteBuffer & buf) const
|
||
{
|
||
writeBinary(toString(), buf);
|
||
}
|
||
};
|
||
|
||
|
||
}
|