a62ab824e6
schema_extension allows making invisible changes to system_schema that evade upgrade rollback tests. They appear in system_schema as an encoded blob which reduces serviceability, as they cannot be read. Deprecate it and point users to adding explicit columns in scylla_tables. We could probably make use of the data structure, after we teach it to encode its payload into proper named and typed columns instead of using IDL. Closes scylladb/scylladb#23151
50 lines
1.4 KiB
C++
50 lines
1.4 KiB
C++
/*
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* Copyright 2020-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
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*/
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#pragma once
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#include <map>
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#include <seastar/core/sstring.hh>
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#include "bytes_fwd.hh"
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#include "cdc/cdc_options.hh"
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#include "schema/schema.hh"
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#include "serializer_impl.hh"
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namespace cdc {
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class cdc_extension : public schema_extension {
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cdc::options _cdc_options;
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public:
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static constexpr auto NAME = "cdc";
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// cdc_extension was written before schema_extension was deprecated, so support it
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// without warnings
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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cdc_extension() = default;
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cdc_extension(const options& opts) : _cdc_options(opts) {}
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explicit cdc_extension(std::map<sstring, sstring> tags) : _cdc_options(std::move(tags)) {}
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explicit cdc_extension(const bytes& b) : _cdc_options(cdc_extension::deserialize(b)) {}
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explicit cdc_extension(const sstring& s) {
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throw std::logic_error("Cannot create cdc info from string");
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}
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#pragma clang diagnostic pop
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bytes serialize() const override {
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return ser::serialize_to_buffer<bytes>(_cdc_options.to_map());
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}
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static std::map<sstring, sstring> deserialize(const bytes_view& buffer) {
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return ser::deserialize_from_buffer(buffer, std::type_identity<std::map<sstring, sstring>>());
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}
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const options& get_options() const {
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return _cdc_options;
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}
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};
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}
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