eb678e723b
So that using calaculate_natural_endpoints can be optimized for strategies that return the same endpoints for all tokens, namely everywhere_replication_strategy and local_strategy. Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
50 lines
1.4 KiB
C++
50 lines
1.4 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: AGPL-3.0-or-later
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*/
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#pragma once
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#include "abstract_replication_strategy.hh"
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#include <optional>
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#include <set>
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// forward declaration since replica/database.hh includes this file
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class keyspace;
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namespace locator {
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using inet_address = gms::inet_address;
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using token = dht::token;
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class local_strategy : public abstract_replication_strategy {
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public:
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local_strategy(const replication_strategy_config_options& config_options);
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virtual ~local_strategy() {};
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virtual size_t get_replication_factor(const token_metadata&) const override;
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virtual bool natural_endpoints_depend_on_token() const noexcept override { return false; }
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virtual future<endpoint_set> calculate_natural_endpoints(const token& search_token, const token_metadata& tm) const override;
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virtual void validate_options() const override;
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virtual std::optional<std::set<sstring>> recognized_options(const topology&) const override;
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virtual bool allow_remove_node_being_replaced_from_natural_endpoints() const override {
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return false;
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}
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/**
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* We need to override this because the default implementation depends
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* on token calculations but LocalStrategy may be used before tokens are set up.
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*/
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inet_address_vector_replica_set get_natural_endpoints(const token&, const effective_replication_map&) const override;
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};
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}
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