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d24687ea26
instead of dispatching and implementing the per-option handling right in `storage_option`, define these helpers in the dedicated option themselves, so `storage_option` is only responsible for dispatching. much cleaner this way. this change also makes it easier to add yet another storage backend. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
/*
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* Copyright (C) 2021-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <string>
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#include <map>
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#include <seastar/core/sstring.hh>
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#include "seastarx.hh"
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namespace data_dictionary {
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struct storage_options {
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struct local {
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static constexpr std::string_view name = "LOCAL";
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static local from_map(const std::map<sstring, sstring>&);
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std::map<sstring, sstring> to_map() const;
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bool operator==(const local&) const = default;
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};
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struct s3 {
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sstring bucket;
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sstring endpoint;
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static constexpr std::string_view name = "S3";
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static s3 from_map(const std::map<sstring, sstring>&);
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std::map<sstring, sstring> to_map() const;
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bool operator==(const s3&) const = default;
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};
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using value_type = std::variant<local, s3>;
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value_type value = local{};
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storage_options() = default;
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bool is_local_type() const noexcept;
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std::string_view type_string() const;
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std::map<sstring, sstring> to_map() const;
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bool can_update_to(const storage_options& new_options);
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static value_type from_map(std::string_view type, std::map<sstring, sstring> values);
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};
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} // namespace data_dictionary
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