operations_encrypted.hpp

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#pragma once
 
/// @file userver/dump/operations_encrypted.hpp
/// @brief Encrypted dump Reader and Writer implementations
 
#include <userver/utils/boost_filesystem_file_status.hpp>
 
#include <userver/dump/factory.hpp>
#include <userver/dump/operations.hpp>
#include <userver/utils/fast_pimpl.hpp>
#include <userver/utils/strong_typedef.hpp>
 
USERVER_NAMESPACE_BEGIN
 
namespace dump {
 
using SecretKey = utils::NonLoggable<class SecretKeyTag, std::string>;
 
class EncryptedWriter final : public Writer {
public:
    /// @brief Creates a new dump file and opens it
    /// @throws `Error` on a filesystem error
    EncryptedWriter(
        std::string filename,
        const SecretKey& secret_key,
        boost::filesystem::perms,
        tracing::ScopeTime& scope
    );
 
    ~EncryptedWriter() override;
 
    void Finish() override;
 
private:
    void WriteRaw(std::string_view data) override;
 
    struct Impl;
    utils::FastPimpl<Impl, 632, 8> impl_;
};
 
class EncryptedReader final : public Reader {
public:
    /// @brief Opens an existing dump file
    /// @throws `Error` on a filesystem error
    EncryptedReader(std::string filename, const SecretKey& key);
 
    ~EncryptedReader() override;
 
    void Finish() override;
 
private:
    std::string_view ReadRaw(std::size_t max_size) override;
 
    void BackUp(std::size_t size) override;
 
    struct Impl;
    utils::FastPimpl<Impl, 600, 8> impl_;
};
 
class EncryptedOperationsFactory final : public OperationsFactory {
public:
    EncryptedOperationsFactory(SecretKey&& secret_key, boost::filesystem::perms perms);
 
    std::unique_ptr<Reader> CreateReader(std::string full_path) override;
 
    std::unique_ptr<Writer> CreateWriter(std::string full_path, tracing::ScopeTime& scope) override;
 
private:
    const SecretKey secret_key_;
    const boost::filesystem::perms perms_;
};
 
}  // namespace dump
 
USERVER_NAMESPACE_END