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#include <DataTypes/DataTypeArray.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeString.h>
#include <DataTypes/DataTypeEnum.h>
#include <DataTypes/DataTypeUUID.h>
#include <Dictionaries/IDictionary.h>
#include <Dictionaries/IDictionarySource.h>
#include <Dictionaries/DictionaryStructure.h>
#include <Interpreters/Context.h>
#include <Interpreters/ExternalDictionariesLoader.h>
#include <Access/ContextAccess.h>
#include <Storages/System/StorageSystemDictionaries.h>
#include <Storages/VirtualColumnUtils.h>
#include <Columns/ColumnString.h>
#include <Core/Names.h>
#include <base/map.h>
#include <mutex>
namespace DB
{
namespace
{
StorageID getDictionaryID(const ExternalLoader::LoadResult & load_result, const std::shared_ptr<const IDictionary> & dict_ptr)
{
StorageID dict_id = StorageID::createEmpty();
if (dict_ptr)
dict_id = dict_ptr->getDictionaryID();
else if (load_result.config)
dict_id = StorageID::fromDictionaryConfig(*load_result.config->config, load_result.config->key_in_config);
else
dict_id.table_name = load_result.name;
return dict_id;
}
std::optional<DictionaryStructure>
getDictionaryStructure(const ExternalLoader::LoadResult & load_result, std::exception_ptr & last_exception)
try
{
return ExternalDictionariesLoader::getDictionaryStructure(*load_result.config);
}
catch (const DB::Exception &)
{
if (!last_exception)
last_exception = std::current_exception();
return {};
}
}
NamesAndTypesList StorageSystemDictionaries::getNamesAndTypes()
{
return {
{"database", std::make_shared<DataTypeString>()},
{"name", std::make_shared<DataTypeString>()},
{"uuid", std::make_shared<DataTypeUUID>()},
{"status", std::make_shared<DataTypeEnum8>(getStatusEnumAllPossibleValues())},
{"origin", std::make_shared<DataTypeString>()},
{"type", std::make_shared<DataTypeString>()},
{"key.names", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
{"key.types", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
{"attribute.names", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
{"attribute.types", std::make_shared<DataTypeArray>(std::make_shared<DataTypeString>())},
{"bytes_allocated", std::make_shared<DataTypeUInt64>()},
{"hierarchical_index_bytes_allocated", std::make_shared<DataTypeUInt64>()},
{"query_count", std::make_shared<DataTypeUInt64>()},
{"hit_rate", std::make_shared<DataTypeFloat64>()},
{"found_rate", std::make_shared<DataTypeFloat64>()},
{"element_count", std::make_shared<DataTypeUInt64>()},
{"load_factor", std::make_shared<DataTypeFloat64>()},
{"source", std::make_shared<DataTypeString>()},
{"lifetime_min", std::make_shared<DataTypeUInt64>()},
{"lifetime_max", std::make_shared<DataTypeUInt64>()},
{"loading_start_time", std::make_shared<DataTypeDateTime>()},
{"last_successful_update_time", std::make_shared<DataTypeDateTime>()},
{"loading_duration", std::make_shared<DataTypeFloat32>()},
{"last_exception", std::make_shared<DataTypeString>()},
{"comment", std::make_shared<DataTypeString>()}
};
}
NamesAndTypesList StorageSystemDictionaries::getVirtuals() const
{
return {
{"key", std::make_shared<DataTypeString>()}
};
}
void StorageSystemDictionaries::fillData(MutableColumns & res_columns, ContextPtr context, const SelectQueryInfo & /*query_info*/) const
{
const auto access = context->getAccess();
const bool check_access_for_dictionaries = access->isGranted(AccessType::SHOW_DICTIONARIES);
const auto & external_dictionaries = context->getExternalDictionariesLoader();
if (!check_access_for_dictionaries)
return;
for (const auto & load_result : external_dictionaries.getLoadResults())
{
const auto dict_ptr = std::dynamic_pointer_cast<const IDictionary>(load_result.object);
std::exception_ptr last_exception = load_result.exception;
auto dict_structure = getDictionaryStructure(load_result, last_exception);
StorageID dict_id = getDictionaryID(load_result, dict_ptr);
String db_or_tag = dict_id.database_name.empty() ? IDictionary::NO_DATABASE_TAG : dict_id.database_name;
if (!access->isGranted(AccessType::SHOW_DICTIONARIES, db_or_tag, dict_id.table_name))
continue;
size_t i = 0;
res_columns[i++]->insert(dict_id.database_name);
res_columns[i++]->insert(dict_id.table_name);
res_columns[i++]->insert(dict_id.uuid);
res_columns[i++]->insert(static_cast<Int8>(load_result.status));
res_columns[i++]->insert(load_result.config ? load_result.config->path : "");
if (dict_ptr)
res_columns[i++]->insert(dict_ptr->getTypeName());
else
res_columns[i++]->insertDefault();
if (dict_structure)
{
res_columns[i++]->insert(collections::map<Array>(dict_structure->getKeysNames(), [](auto & name) { return name; }));
if (dict_structure->id)
res_columns[i++]->insert(Array({"UInt64"}));
else
res_columns[i++]->insert(collections::map<Array>(*dict_structure->key, [](auto & attr) { return attr.type->getName(); }));
res_columns[i++]->insert(collections::map<Array>(dict_structure->attributes, [](auto & attr) { return attr.name; }));
res_columns[i++]->insert(collections::map<Array>(dict_structure->attributes, [](auto & attr) { return attr.type->getName(); }));
}
else
{
for (size_t j = 0; j != 4; ++j) // Number of empty fields if dict_structure is null
res_columns[i++]->insertDefault();
}
if (dict_ptr)
{
res_columns[i++]->insert(dict_ptr->getBytesAllocated());
res_columns[i++]->insert(dict_ptr->getHierarchicalIndexBytesAllocated());
res_columns[i++]->insert(dict_ptr->getQueryCount());
res_columns[i++]->insert(dict_ptr->getHitRate());
res_columns[i++]->insert(dict_ptr->getFoundRate());
res_columns[i++]->insert(dict_ptr->getElementCount());
res_columns[i++]->insert(dict_ptr->getLoadFactor());
res_columns[i++]->insert(dict_ptr->getSource()->toString());
const auto & lifetime = dict_ptr->getLifetime();
res_columns[i++]->insert(lifetime.min_sec);
res_columns[i++]->insert(lifetime.max_sec);
if (!last_exception)
last_exception = dict_ptr->getLastException();
}
else
{
for (size_t j = 0; j != 10; ++j) // Number of empty fields if dict_ptr is null
res_columns[i++]->insertDefault();
}
res_columns[i++]->insert(static_cast<UInt64>(std::chrono::system_clock::to_time_t(load_result.loading_start_time)));
res_columns[i++]->insert(static_cast<UInt64>(std::chrono::system_clock::to_time_t(load_result.last_successful_update_time)));
res_columns[i++]->insert(std::chrono::duration_cast<std::chrono::duration<float>>(load_result.loading_duration).count());
if (last_exception)
res_columns[i++]->insert(getExceptionMessage(last_exception, false));
else
res_columns[i++]->insertDefault();
if (dict_ptr)
{
res_columns[i++]->insert(dict_ptr->getDictionaryComment());
}
else
{
if (load_result.config && load_result.config->config->has("dictionary.comment"))
res_columns[i++]->insert(load_result.config->config->getString("dictionary.comment"));
else
res_columns[i++]->insertDefault();
}
/// Start fill virtual columns
if (dict_structure)
res_columns[i++]->insert(dict_structure->getKeyDescription());
else
res_columns[i++]->insertDefault();
}
}
}
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