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https://github.com/scylladb/scylladb.git
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fcc17d43a6
alternator/expressions.g had both AGPL and proprietary licensing. The proprietary one is removed. gms/inet_address_serializer.hh had only a proprietary license; it is replaced by the AGPL. Fixes #8465. Closes #8466
80 lines
2.5 KiB
C++
80 lines
2.5 KiB
C++
/*
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* Copyright (C) 2019 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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#pragma once
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#include "inet_address.hh"
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#include "serializer.hh"
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namespace ser {
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/**
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* Manual definition of inet_address serialization.
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* Because inet_address was initially hardcoded to
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* ipv4, its wire format is not very forward compatible.
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*
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* Since we potentially need to communicate with older
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* version nodes, we manually define the new serial format
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* for inet_address to be:
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*
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* ipv4: 4 bytes address
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* ipv6: 4 bytes marker 0xffffffff (invalid address)
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* 16 bytes data -> address
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*
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* As long as we are restricted to ipv4 (config/user responsibility)
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* we will be able to swap gossip with older nodes. Once the
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* cluster is fully updated, user can enable ipv6 and we will be
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* happy and addressing all the molecules.
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*
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*/
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template<>
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struct serializer<gms::inet_address> {
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template<typename Input>
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static gms::inet_address read(Input& in) {
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auto sz = deserialize(in, boost::type<uint32_t>());
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if (sz == std::numeric_limits<uint32_t>::max()) {
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seastar::net::ipv6_address addr(deserialize(in, boost::type<net::ipv6_address::ipv6_bytes>()));
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return gms::inet_address(addr);
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}
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return gms::inet_address(sz);
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}
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template<typename Output>
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static void write(Output& out, gms::inet_address v) {
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auto& addr = v.addr();
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if (addr.is_ipv6()) {
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serialize(out, std::numeric_limits<uint32_t>::max());
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auto bv = v.bytes();
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out.write(reinterpret_cast<const char *>(bv.data()), bv.size());
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} else {
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uint32_t ip = addr.as_ipv4_address().ip;
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// must write this little (or rather host) endian
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serialize(out, ip);
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}
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}
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template<typename Input>
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static void skip(Input& v) {
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read(v);
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}
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};
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}
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