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e88bd9c5bd
less overhead this way. the caller of lookup() always passes a rvalue reference. and seastar::dns::get_host_by_name() actually moves away from the parameter, so let's pass by std::move() for slightly better performance, and to match the expectation of the underlying seastar API. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com> Closes scylladb/scylladb#16280
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
/*
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*
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* Modified by ScyllaDB
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* Copyright (C) 2016-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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#include <boost/io/ios_state.hpp>
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#include <seastar/net/inet_address.hh>
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#include <seastar/net/dns.hh>
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#include <seastar/core/print.hh>
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#include <seastar/core/future.hh>
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#include "inet_address.hh"
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using namespace seastar;
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static_assert(std::is_nothrow_default_constructible_v<gms::inet_address>);
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static_assert(std::is_nothrow_copy_constructible_v<gms::inet_address>);
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static_assert(std::is_nothrow_move_constructible_v<gms::inet_address>);
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future<gms::inet_address> gms::inet_address::lookup(sstring name, opt_family family, opt_family preferred) {
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return seastar::net::dns::get_host_by_name(std::move(name), family).then([preferred](seastar::net::hostent&& h) {
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for (auto& addr : h.addr_list) {
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if (!preferred || addr.in_family() == preferred) {
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return gms::inet_address(addr);
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}
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}
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return gms::inet_address(h.addr_list.front());
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});
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}
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std::ostream& gms::operator<<(std::ostream& os, const inet_address& x) {
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fmt::print(os, "{}", x);
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return os;
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}
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sstring gms::inet_address::to_sstring() const {
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return format("{}", *this);
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}
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