Files
scylla/locator/ec2_multi_region_snitch.cc
Kefu Chai 76b9e4f4f4 locator: do not include unused headers
these unused includes were identified by clangd. see
https://clangd.llvm.org/guides/include-cleaner#unused-include-warning
for more details on the "Unused include" warning.

Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>

Closes scylladb/scylladb#16914
2024-01-23 09:12:23 +02:00

96 lines
4.3 KiB
C++

/*
*
* Modified by ScyllaDB
* Copyright (C) 2015-present ScyllaDB
*/
/*
* SPDX-License-Identifier: (AGPL-3.0-or-later and Apache-2.0)
*/
#include "locator/ec2_multi_region_snitch.hh"
#include "exceptions/exceptions.hh"
#include "gms/gossiper.hh"
#include "utils/class_registrator.hh"
static constexpr const char* PUBLIC_IP_QUERY_REQ = "/latest/meta-data/public-ipv4";
static constexpr const char* PRIVATE_IP_QUERY_REQ = "/latest/meta-data/local-ipv4";
static constexpr const char* PUBLIC_IPV6_QUERY_REQ = "/latest/meta-data/network/interfaces/macs/{}/ipv6s";
static constexpr const char* PRIVATE_MAC_QUERY = "/latest/meta-data/network/interfaces/macs";
namespace locator {
ec2_multi_region_snitch::ec2_multi_region_snitch(const snitch_config& cfg)
: ec2_snitch(cfg)
{}
future<> ec2_multi_region_snitch::start() {
_state = snitch_state::initializing;
co_await ec2_snitch::load_config(true);
if (this_shard_id() == io_cpu_id()) {
auto token = co_await aws_api_call(AWS_QUERY_SERVER_ADDR, AWS_QUERY_SERVER_PORT, TOKEN_REQ_ENDPOINT, std::nullopt);
try {
auto broadcast = _cfg.broadcast_address;
if (broadcast.addr().is_ipv6()) {
auto macs = co_await aws_api_call(AWS_QUERY_SERVER_ADDR, AWS_QUERY_SERVER_PORT, PRIVATE_MAC_QUERY, token);
// we should just get a single line, ending in '/'. If there are more than one mac, we should
// maybe try to loop the addresses and exclude local/link-local etc, but these addresses typically
// are already filtered by aws, so probably does not help. For now, just warn and pick first address.
auto i = macs.find('/');
auto mac = macs.substr(0, i);
if (i != std::string::npos && ++i != macs.size()) {
logger().warn("Ec2MultiRegionSnitch (ipv6): more than one MAC address listed ({}). Will use first.", macs);
}
auto ipv6 = co_await aws_api_call(AWS_QUERY_SERVER_ADDR, AWS_QUERY_SERVER_PORT, format(PUBLIC_IPV6_QUERY_REQ, mac), token);
_local_public_address = inet_address(ipv6);
_local_private_address = ipv6;
} else {
auto pub_addr = co_await aws_api_call(AWS_QUERY_SERVER_ADDR, AWS_QUERY_SERVER_PORT, PUBLIC_IP_QUERY_REQ, token);
_local_public_address = inet_address(pub_addr);
}
} catch (...) {
std::throw_with_nested(exceptions::configuration_exception("Failed to get a Public IP. Public IP is a requirement for Ec2MultiRegionSnitch. Consider using a different snitch if your instance doesn't have it"));
}
logger().info("Ec2MultiRegionSnitch using publicIP as identifier: {}", _local_public_address);
if (!_local_public_address.addr().is_ipv6()) {
sstring priv_addr = co_await aws_api_call(AWS_QUERY_SERVER_ADDR, AWS_QUERY_SERVER_PORT, PRIVATE_IP_QUERY_REQ, token);
_local_private_address = priv_addr;
}
//
// Gossiper main instance is currently running on CPU0 -
// therefore we need to make sure the _local_private_address is
// set on the shard0 so that it may be used when Gossiper is
// going to invoke gossiper_starting() method.
//
co_await container().invoke_on(0, [this] (snitch_ptr& local_s) {
if (this_shard_id() != io_cpu_id()) {
local_s->set_local_private_addr(_local_private_address);
}
});
}
set_snitch_ready();
}
void ec2_multi_region_snitch::set_local_private_addr(const sstring& addr_str) {
_local_private_address = addr_str;
}
gms::application_state_map ec2_multi_region_snitch::get_app_states() const {
return {
{gms::application_state::DC, gms::versioned_value::datacenter(_my_dc)},
{gms::application_state::RACK, gms::versioned_value::rack(_my_rack)},
{gms::application_state::INTERNAL_IP, gms::versioned_value::internal_ip(_local_private_address)},
};
}
using registry_default = class_registrator<i_endpoint_snitch, ec2_multi_region_snitch, const snitch_config&>;
static registry_default registrator_default("org.apache.cassandra.locator.Ec2MultiRegionSnitch");
static registry_default registrator_default_short_name("Ec2MultiRegionSnitch");
} // namespace locator