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888a33f9d2
This is meant to exclude the exceptions throwing when we want to branch on a specific instance type (Java's instanceof call). Signed-off-by: Vlad Zolotarov <vladz@cloudius-systems.com>
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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* Copyright (C) 2015 Cloudius Systems, Ltd.
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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) {
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const std::vector<token>& tokens = _token_metadata.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 : _token_metadata.ring_range(t)) {
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auto ep = _token_metadata.get_endpoint(token);
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assert(ep);
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endpoints.push_back(*ep);
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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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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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