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#include <Functions/IFunction.h>
#include <Functions/FunctionFactory.h>
#include <Interpreters/Context.h>
#include <Access/AccessControl.h>
#include <Access/User.h>
#include <Columns/ColumnArray.h>
#include <Columns/ColumnConst.h>
#include <Columns/ColumnString.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypeArray.h>
namespace DB
{
namespace
{
enum class Kind
{
CURRENT_PROFILES,
ENABLED_PROFILES,
DEFAULT_PROFILES,
};
template <Kind kind>
class FunctionCurrentProfiles : public IFunction
{
public:
static constexpr auto name = (kind == Kind::CURRENT_PROFILES) ? "currentProfiles" : ((kind == Kind::ENABLED_PROFILES) ? "enabledProfiles" : "defaultProfiles");
static FunctionPtr create(const ContextPtr & context) { return std::make_shared<FunctionCurrentProfiles>(context); }
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return false; }
String getName() const override { return name; }
explicit FunctionCurrentProfiles(const ContextPtr & context)
{
const auto & manager = context->getAccessControl();
std::vector<UUID> profile_ids;
if constexpr (kind == Kind::CURRENT_PROFILES)
{
profile_ids = context->getCurrentProfiles();
}
else if constexpr (kind == Kind::ENABLED_PROFILES)
{
profile_ids = context->getEnabledProfiles();
}
else
{
static_assert(kind == Kind::DEFAULT_PROFILES);
profile_ids = context->getUser()->settings.toProfileIDs();
}
profile_names = manager.tryReadNames(profile_ids);
}
size_t getNumberOfArguments() const override { return 0; }
bool isDeterministic() const override { return false; }
DataTypePtr getReturnTypeImpl(const DataTypes & /*arguments*/) const override
{
return std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>());
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName &, const DataTypePtr &, size_t input_rows_count) const override
{
auto col_res = ColumnArray::create(ColumnString::create());
ColumnString & res_strings = typeid_cast<ColumnString &>(col_res->getData());
ColumnArray::Offsets & res_offsets = col_res->getOffsets();
for (const String & profile_name : profile_names)
res_strings.insertData(profile_name.data(), profile_name.length());
res_offsets.push_back(res_strings.size());
return ColumnConst::create(std::move(col_res), input_rows_count);
}
private:
Strings profile_names;
};
}
REGISTER_FUNCTION(CurrentProfiles)
{
factory.registerFunction<FunctionCurrentProfiles<Kind::CURRENT_PROFILES>>();
factory.registerFunction<FunctionCurrentProfiles<Kind::ENABLED_PROFILES>>();
factory.registerFunction<FunctionCurrentProfiles<Kind::DEFAULT_PROFILES>>();
}
}
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