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