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/
75 lines
2.3 KiB
C++
75 lines
2.3 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 "mutation/mutation_partition_visitor.hh"
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#include "utils/hashing.hh"
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#include "schema/schema.hh"
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#include "mutation/atomic_cell_hash.hh"
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#include "mutation/position_in_partition.hh"
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// Calculates a hash of a mutation_partition which is consistent with
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// mutation equality. For any equal mutations, no matter which schema
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// version they were generated under, the hash fed will be the same for both of them.
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template<typename Hasher>
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class hashing_partition_visitor : public mutation_partition_visitor {
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Hasher& _h;
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const schema& _s;
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public:
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hashing_partition_visitor(Hasher& h, const schema& s)
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: _h(h)
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, _s(s)
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{ }
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virtual void accept_partition_tombstone(tombstone t) override {
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feed_hash(_h, t);
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}
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virtual void accept_static_cell(column_id id, atomic_cell_view cell) override {
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auto&& col = _s.static_column_at(id);
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feed_hash(_h, col.name());
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feed_hash(_h, col.type->name());
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feed_hash(_h, cell, col);
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}
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virtual void accept_static_cell(column_id id, collection_mutation_view cell) override {
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auto&& col = _s.static_column_at(id);
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feed_hash(_h, col.name());
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feed_hash(_h, col.type->name());
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feed_hash(_h, cell, col);
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}
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virtual void accept_row_tombstone(const range_tombstone& rt) override {
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feed_hash(_h, rt, _s);
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}
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virtual void accept_row(position_in_partition_view pos, const row_tombstone& deleted_at, const row_marker& rm, is_dummy dummy, is_continuous continuous) override {
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if (dummy) {
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return;
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}
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feed_hash(_h, pos.key(), _s);
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feed_hash(_h, deleted_at);
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feed_hash(_h, rm);
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}
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virtual void accept_row_cell(column_id id, atomic_cell_view cell) override {
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auto&& col = _s.regular_column_at(id);
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feed_hash(_h, col.name());
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feed_hash(_h, col.type->name());
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feed_hash(_h, cell, col);
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}
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virtual void accept_row_cell(column_id id, collection_mutation_view cell) override {
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auto&& col = _s.regular_column_at(id);
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feed_hash(_h, col.name());
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feed_hash(_h, col.type->name());
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feed_hash(_h, cell, col);
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}
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};
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