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79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
#pragma once
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#include <Yandex/logger_useful.h>
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#include <DB/Columns/IColumn.h>
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#include <Poco/AutoPtr.h>
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#include <Poco/Util/XMLConfiguration.h>
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#include <string>
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#include <Poco/File.h>
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#include <DB/Common/escapeForFileName.h>
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namespace DB
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{
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/// хранит размеры всех столбцов, и может проверять не побились ли столбцы
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template <class Storage>
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class FileChecker
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{
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public:
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FileChecker(const std::string &file_info_path_, Storage & storage_) :
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files_info_path(file_info_path_), files_info(new Poco::Util::XMLConfiguration), storage(storage_), log(&Logger::get("FileChecker"))
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{
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try
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{
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files_info->load(files_info_path);
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}
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catch (Poco::FileNotFoundException & e)
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{
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files_info->loadEmpty("yandex");
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}
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}
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void setPath(const std::string & file_info_path_)
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{
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files_info_path = file_info_path_;
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}
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using Files = std::vector<Poco::File>;
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void update(const Files::iterator & begin, const Files::iterator & end)
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{
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for (auto it = begin; it != end; ++it)
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files_info->setString(escapeForFileName(Poco::Path(it->path()).getFileName()) + ".size", std::to_string(it->getSize()));
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files_info->save(files_info_path);
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}
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bool check(const Files::iterator & begin, const Files::iterator & end) const
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{
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bool sizes_are_correct = true;
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for (auto it = begin; it != end; ++it)
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{
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auto & file = *it;
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std::string filename = escapeForFileName(Poco::Path(it->path()).getFileName());
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if (files_info->has(filename))
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{
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size_t expected_size = std::stoull(files_info->getString(filename + ".size"));
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size_t real_size = file.getSize();
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if (real_size != expected_size)
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{
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LOG_ERROR(log, "Size of " << file.path() << "is wrong. Size is " << real_size << " but should be " << expected_size);
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sizes_are_correct = false;
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}
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}
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}
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return sizes_are_correct;
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}
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private:
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std::string files_info_path;
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using FileInfo = Poco::AutoPtr<Poco::Util::XMLConfiguration>;
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FileInfo files_info;
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Storage & storage;
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Logger * log;
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};
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}
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