mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-09-30 05:30:51 +00:00
96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
#include "FileDictionarySource.h"
|
|
#include <DataStreams/OwningBlockInputStream.h>
|
|
#include <IO/ReadBufferFromFile.h>
|
|
#include <Interpreters/Context.h>
|
|
#include <Poco/File.h>
|
|
#include <Common/StringUtils/StringUtils.h>
|
|
#include "DictionarySourceFactory.h"
|
|
#include "DictionaryStructure.h"
|
|
#include "registerDictionaries.h"
|
|
#include "DictionarySourceHelpers.h"
|
|
|
|
namespace DB
|
|
{
|
|
static const UInt64 max_block_size = 8192;
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int LOGICAL_ERROR;
|
|
extern const int PATH_ACCESS_DENIED;
|
|
}
|
|
|
|
|
|
FileDictionarySource::FileDictionarySource(
|
|
const std::string & filepath_, const std::string & format_,
|
|
Block & sample_block_, const Context & context_, bool check_config)
|
|
: filepath{filepath_}
|
|
, format{format_}
|
|
, sample_block{sample_block_}
|
|
, context(context_)
|
|
{
|
|
if (check_config)
|
|
{
|
|
const String user_files_path = context.getUserFilesPath();
|
|
if (!startsWith(filepath, user_files_path))
|
|
throw Exception("File path " + filepath + " is not inside " + user_files_path, ErrorCodes::PATH_ACCESS_DENIED);
|
|
}
|
|
}
|
|
|
|
|
|
FileDictionarySource::FileDictionarySource(const FileDictionarySource & other)
|
|
: filepath{other.filepath}
|
|
, format{other.format}
|
|
, sample_block{other.sample_block}
|
|
, context(other.context)
|
|
, last_modification{other.last_modification}
|
|
{
|
|
}
|
|
|
|
|
|
BlockInputStreamPtr FileDictionarySource::loadAll()
|
|
{
|
|
LOG_TRACE(&Poco::Logger::get("FileDictionary"), "loadAll " + toString());
|
|
auto in_ptr = std::make_unique<ReadBufferFromFile>(filepath);
|
|
auto stream = context.getInputFormat(format, *in_ptr, sample_block, max_block_size);
|
|
last_modification = getLastModification();
|
|
|
|
return std::make_shared<OwningBlockInputStream<ReadBuffer>>(stream, std::move(in_ptr));
|
|
}
|
|
|
|
|
|
std::string FileDictionarySource::toString() const
|
|
{
|
|
return "File: " + filepath + ' ' + format;
|
|
}
|
|
|
|
|
|
Poco::Timestamp FileDictionarySource::getLastModification() const
|
|
{
|
|
return Poco::File{filepath}.getLastModified();
|
|
}
|
|
|
|
void registerDictionarySourceFile(DictionarySourceFactory & factory)
|
|
{
|
|
auto create_table_source = [=](const DictionaryStructure & dict_struct,
|
|
const Poco::Util::AbstractConfiguration & config,
|
|
const std::string & config_prefix,
|
|
Block & sample_block,
|
|
const Context & context,
|
|
bool check_config) -> DictionarySourcePtr
|
|
{
|
|
if (dict_struct.has_expressions)
|
|
throw Exception{"Dictionary source of type `file` does not support attribute expressions", ErrorCodes::LOGICAL_ERROR};
|
|
|
|
const auto filepath = config.getString(config_prefix + ".file.path");
|
|
const auto format = config.getString(config_prefix + ".file.format");
|
|
|
|
Context context_local_copy = copyContextAndApplySettings(config_prefix, context, config);
|
|
|
|
return std::make_unique<FileDictionarySource>(filepath, format, sample_block, context_local_copy, check_config);
|
|
};
|
|
|
|
factory.registerSource("file", create_table_source);
|
|
}
|
|
|
|
}
|