38a54df863
People keep tripping over the old copyrights and copy-pasting them to new files. Search and replace "Cloudius Systems" with "ScyllaDB". Message-Id: <1460013664-25966-1-git-send-email-penberg@scylladb.com>
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
/*
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* Copyright (C) 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <algorithm>
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#include "simple_strategy.hh"
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#include "utils/class_registrator.hh"
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#include <boost/algorithm/string.hpp>
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#include "utils/sequenced_set.hh"
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namespace locator {
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simple_strategy::simple_strategy(const sstring& keyspace_name, token_metadata& token_metadata, snitch_ptr& snitch, const std::map<sstring, sstring>& config_options) :
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abstract_replication_strategy(keyspace_name, token_metadata, snitch, config_options, replication_strategy_type::simple) {
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for (auto& config_pair : config_options) {
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auto& key = config_pair.first;
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auto& val = config_pair.second;
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if (boost::iequals(key, "replication_factor")) {
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_replication_factor = std::stol(val);
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break;
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}
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}
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}
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std::vector<inet_address> simple_strategy::calculate_natural_endpoints(const token& t, token_metadata& tm) const {
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const std::vector<token>& tokens = tm.sorted_tokens();
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if (tokens.empty()) {
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return std::vector<inet_address>();
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}
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size_t replicas = get_replication_factor();
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utils::sequenced_set<inet_address> endpoints;
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endpoints.reserve(replicas);
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for (auto& token : tm.ring_range(t)) {
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auto ep = tm.get_endpoint(token);
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assert(ep);
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endpoints.push_back(*ep);
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if (endpoints.size() == replicas) {
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break;
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}
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}
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return std::move(endpoints.get_vector());
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}
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size_t simple_strategy::get_replication_factor() const {
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return _replication_factor;
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}
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void simple_strategy::validate_options() const {
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auto it = _config_options.find("replication_factor");
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if (it == _config_options.end()) {
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throw exceptions::configuration_exception("SimpleStrategy requires a replication_factor strategy option.");
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}
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validate_replication_factor(it->second);
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}
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std::experimental::optional<std::set<sstring>>simple_strategy::recognized_options() const {
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return {{ "replication_factor" }};
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}
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using registry = class_registrator<abstract_replication_strategy, simple_strategy, const sstring&, token_metadata&, snitch_ptr&, const std::map<sstring, sstring>&>;
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static registry registrator("org.apache.cassandra.locator.SimpleStrategy");
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static registry registrator_short_name("SimpleStrategy");
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}
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