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/
29 lines
931 B
C++
29 lines
931 B
C++
/*
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* Copyright (C) 2023-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 <functional>
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#include "readers/mutation_reader.hh"
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#include "dht/token.hh"
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namespace mutation_writer {
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using token_group_id = size_t;
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using classify_by_token_group = std::function<token_group_id(dht::token)>;
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// This segregation mechanism work with the concept of token groups, where
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// different groups don't overlap each other in their token range, and also
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// group 0 always precedes group 1 in the token order.
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// Therefore, it's guaranteed that the segregator will emit data for only
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// one group at a time. When moving to the next group, we're guaranteed
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// that producer won't longer emit data for the previous group.
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future<> segregate_by_token_group(mutation_reader producer, classify_by_token_group classify, reader_consumer_v2 consumer);
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} // namespace mutation_writer
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