a8c36aad0b
We optimise memory usage of replication_map by storing endpoints list only once in case of natural_endpoints_depend_on_token() == false. For simplicity, this list is stored in the same unordered_map with special key default_replication_map_key. We inline both get_natural_endpoints and for_each_natural_endpoint_until from abstract_replication_strategy into vnode_erm since now the overrides in local and everywhere strategies are redundant. The default implementation works for them as empty sorted_tokens() is not a problem, we store endpoints with a special key. Function do_get_natural_endpoints was extracted, since get_natural_endpoints returns by val, but for_each_natural_endpoint_until reference in sufficient.
37 lines
1.0 KiB
C++
37 lines
1.0 KiB
C++
/*
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*
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* Modified by ScyllaDB
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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 and Apache-2.0)
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*/
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#pragma once
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#include "locator/abstract_replication_strategy.hh"
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#include <optional>
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namespace locator {
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class everywhere_replication_strategy : public abstract_replication_strategy {
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public:
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everywhere_replication_strategy(const replication_strategy_config_options& config_options);
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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 gms::feature_service&) const override { /* noop */ }
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std::optional<std::unordered_set<sstring>> recognized_options(const topology&) const override {
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// We explicitely allow all options
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return std::nullopt;
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}
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virtual size_t get_replication_factor(const token_metadata& tm) const override;
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virtual bool allow_remove_node_being_replaced_from_natural_endpoints() const override {
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return true;
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}
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};
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}
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