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#include "LibraryDictionarySource.h"
#include <Interpreters/Context.h>
#include <Common/logger_useful.h>
#include <Common/filesystemHelpers.h>
#include <IO/WriteBufferFromString.h>
#include <IO/WriteHelpers.h>
#include <filesystem>
#include <Dictionaries/DictionarySourceFactory.h>
#include <Dictionaries/DictionarySourceHelpers.h>
#include <Dictionaries/DictionaryStructure.h>
#include <Dictionaries/registerDictionaries.h>
namespace DB
{
namespace ErrorCodes
{
extern const int FILE_DOESNT_EXIST;
extern const int EXTERNAL_LIBRARY_ERROR;
extern const int PATH_ACCESS_DENIED;
}
LibraryDictionarySource::LibraryDictionarySource(
const DictionaryStructure & dict_struct_,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix_,
Block & sample_block_,
ContextPtr context_,
bool created_from_ddl)
: log(&Poco::Logger::get("LibraryDictionarySource"))
, dict_struct{dict_struct_}
, config_prefix{config_prefix_}
, path{config.getString(config_prefix + ".path", "")}
, dictionary_id(getDictID())
, sample_block{sample_block_}
, context(Context::createCopy(context_))
{
auto dictionaries_lib_path = context->getDictionariesLibPath();
if (created_from_ddl && !fileOrSymlinkPathStartsWith(path, dictionaries_lib_path))
throw Exception(ErrorCodes::PATH_ACCESS_DENIED, "File path {} is not inside {}", path, dictionaries_lib_path);
namespace fs = std::filesystem;
if (!fs::exists(path))
throw Exception(ErrorCodes::FILE_DOESNT_EXIST, "LibraryDictionarySource: Can't load library {}: file doesn't exist", path);
description.init(sample_block);
ExternalDictionaryLibraryBridgeHelper::LibraryInitData library_data
{
.library_path = path,
.library_settings = getLibrarySettingsString(config, config_prefix + ".settings"),
.dict_attributes = getDictAttributesString()
};
bridge_helper = std::make_shared<ExternalDictionaryLibraryBridgeHelper>(context, description.sample_block, dictionary_id, library_data);
if (!bridge_helper->initLibrary())
throw Exception(ErrorCodes::EXTERNAL_LIBRARY_ERROR, "Failed to create shared library from path: {}", path);
}
LibraryDictionarySource::~LibraryDictionarySource()
{
try
{
bridge_helper->removeLibrary();
}
catch (...)
{
tryLogCurrentException("LibraryDictionarySource");
}
}
LibraryDictionarySource::LibraryDictionarySource(const LibraryDictionarySource & other)
: log(&Poco::Logger::get("LibraryDictionarySource"))
, dict_struct{other.dict_struct}
, config_prefix{other.config_prefix}
, path{other.path}
, dictionary_id{getDictID()}
, sample_block{other.sample_block}
, context(other.context)
, description{other.description}
{
bridge_helper = std::make_shared<ExternalDictionaryLibraryBridgeHelper>(context, description.sample_block, dictionary_id, other.bridge_helper->getLibraryData());
if (!bridge_helper->cloneLibrary(other.dictionary_id))
throw Exception(ErrorCodes::EXTERNAL_LIBRARY_ERROR, "Failed to clone library");
}
bool LibraryDictionarySource::isModified() const
{
return bridge_helper->isModified();
}
bool LibraryDictionarySource::supportsSelectiveLoad() const
{
return bridge_helper->supportsSelectiveLoad();
}
QueryPipeline LibraryDictionarySource::loadAll()
{
LOG_TRACE(log, "loadAll {}", toString());
return bridge_helper->loadAll();
}
QueryPipeline LibraryDictionarySource::loadIds(const std::vector<UInt64> & ids)
{
LOG_TRACE(log, "loadIds {} size = {}", toString(), ids.size());
return bridge_helper->loadIds(ids);
}
QueryPipeline LibraryDictionarySource::loadKeys(const Columns & key_columns, const std::vector<std::size_t> & requested_rows)
{
LOG_TRACE(log, "loadKeys {} size = {}", toString(), requested_rows.size());
auto block = blockForKeys(dict_struct, key_columns, requested_rows);
return bridge_helper->loadKeys(block);
}
DictionarySourcePtr LibraryDictionarySource::clone() const
{
return std::make_shared<LibraryDictionarySource>(*this);
}
std::string LibraryDictionarySource::toString() const
{
return path;
}
String LibraryDictionarySource::getLibrarySettingsString(const Poco::Util::AbstractConfiguration & config, const std::string & config_root)
{
Poco::Util::AbstractConfiguration::Keys config_keys;
config.keys(config_root, config_keys);
WriteBufferFromOwnString out;
std::vector<std::string> settings;
for (const auto & key : config_keys)
{
std::string key_name = key;
auto bracket_pos = key.find('[');
if (bracket_pos != std::string::npos && bracket_pos > 0)
key_name = key.substr(0, bracket_pos);
settings.push_back(key_name);
settings.push_back(config.getString(config_root + "." + key));
}
writeVectorBinary(settings, out);
return out.str();
}
String LibraryDictionarySource::getDictAttributesString()
{
std::vector<String> attributes_names(dict_struct.attributes.size());
for (size_t i = 0; i < dict_struct.attributes.size(); ++i)
attributes_names[i] = dict_struct.attributes[i].name;
WriteBufferFromOwnString out;
writeVectorBinary(attributes_names, out);
return out.str();
}
void registerDictionarySourceLibrary(DictionarySourceFactory & factory)
{
auto create_table_source = [=](const DictionaryStructure & dict_struct,
const Poco::Util::AbstractConfiguration & config,
const std::string & config_prefix,
Block & sample_block,
ContextPtr global_context,
const std::string & /* default_database */,
bool created_from_ddl) -> DictionarySourcePtr
{
return std::make_unique<LibraryDictionarySource>(dict_struct, config, config_prefix + ".library", sample_block, global_context, created_from_ddl);
};
factory.registerSource("library", create_table_source);
}
}
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