f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/*
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* Copyright (C) 2015-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 "schema/schema_fwd.hh"
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#include "replica/database_fwd.hh"
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#include "bytes_ostream.hh"
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#include <iosfwd>
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// Immutable mutation form which can be read using any schema version of the same table.
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// Safe to access from other shards via const&.
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// Safe to pass serialized across nodes.
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class canonical_mutation {
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bytes_ostream _data;
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public:
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canonical_mutation() = default;
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explicit canonical_mutation(bytes_ostream);
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explicit canonical_mutation(const mutation&);
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canonical_mutation(canonical_mutation&&) = default;
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canonical_mutation(const canonical_mutation&) = default;
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canonical_mutation& operator=(const canonical_mutation&) = default;
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canonical_mutation& operator=(canonical_mutation&&) = default;
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// Create a mutation object interpreting this canonical mutation using
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// given schema.
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//
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// Data which is not representable in the target schema is dropped. If this
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// is not intended, user should sync the schema first.
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mutation to_mutation(schema_ptr) const;
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partition_key key() const;
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table_id column_family_id() const;
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const bytes_ostream& representation() const { return _data; }
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bytes_ostream& representation() { return _data; }
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friend fmt::formatter<canonical_mutation>;
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};
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template <> struct fmt::formatter<canonical_mutation> : fmt::formatter<string_view> {
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auto format(const canonical_mutation&, fmt::format_context& ctx) const -> decltype(ctx.out());
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};
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inline std::ostream& operator<<(std::ostream& os, const canonical_mutation& cm) {
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fmt::print(os, "{}", cm);
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return os;
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}
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