ClickHouse/dbms/Functions/currentQuota.cpp

136 lines
3.4 KiB
C++
Raw Normal View History

#include <Functions/IFunctionImpl.h>
#include <Functions/FunctionFactory.h>
#include <Interpreters/Context.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypeUUID.h>
#include <Access/EnabledQuota.h>
#include <Access/QuotaUsageInfo.h>
#include <Core/Field.h>
namespace DB
{
class FunctionCurrentQuota : public IFunction
{
const String quota_name;
public:
static constexpr auto name = "currentQuota";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionCurrentQuota>(context.getQuota()->getUsageInfo().quota_name);
}
explicit FunctionCurrentQuota(const String & quota_name_) : quota_name{quota_name_}
{
}
String getName() const override
{
return name;
}
size_t getNumberOfArguments() const override
{
return 0;
}
DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
{
return std::make_shared<DataTypeString>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers &, size_t result, size_t input_rows_count) override
{
block.getByPosition(result).column = DataTypeString().createColumnConst(input_rows_count, quota_name);
}
};
class FunctionCurrentQuotaId : public IFunction
{
const UUID quota_id;
public:
static constexpr auto name = "currentQuotaID";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionCurrentQuotaId>(context.getQuota()->getUsageInfo().quota_id);
}
explicit FunctionCurrentQuotaId(const UUID quota_id_) : quota_id{quota_id_}
{
}
String getName() const override
{
return name;
}
size_t getNumberOfArguments() const override
{
return 0;
}
DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
{
return std::make_shared<DataTypeUUID>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers &, size_t result, size_t input_rows_count) override
{
block.getByPosition(result).column = DataTypeUUID().createColumnConst(input_rows_count, quota_id);
}
};
class FunctionCurrentQuotaKey : public IFunction
{
const String quota_key;
public:
static constexpr auto name = "currentQuotaKey";
static FunctionPtr create(const Context & context)
{
return std::make_shared<FunctionCurrentQuotaKey>(context.getQuota()->getUsageInfo().quota_key);
}
explicit FunctionCurrentQuotaKey(const String & quota_key_) : quota_key{quota_key_}
{
}
String getName() const override
{
return name;
}
size_t getNumberOfArguments() const override
{
return 0;
}
DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
{
return std::make_shared<DataTypeString>();
}
bool isDeterministic() const override { return false; }
void executeImpl(Block & block, const ColumnNumbers &, size_t result, size_t input_rows_count) override
{
block.getByPosition(result).column = DataTypeString().createColumnConst(input_rows_count, quota_key);
}
};
void registerFunctionCurrentQuota(FunctionFactory & factory)
{
factory.registerFunction<FunctionCurrentQuota>();
factory.registerFunction<FunctionCurrentQuotaId>();
factory.registerFunction<FunctionCurrentQuotaKey>();
}
}