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// Copyright (C) 2022-2024 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <asiolink/asio_wrapper.h>
#include <tcp/tcp_connection_pool.h>
#include <util/multi_threading_mgr.h>
using namespace isc::asiolink;
namespace isc {
namespace tcp {
std::atomic<uint64_t>
TcpConnectionPool::started_counter_(0);
std::atomic<uint64_t>
TcpConnectionPool::stopped_counter_(0);
std::atomic<uint64_t>
TcpConnectionPool::rejected_counter_(0);
void
TcpConnectionPool::start(const TcpConnectionPtr& connection) {
if (util::MultiThreadingMgr::instance().getMode()) {
std::lock_guard<std::mutex> lk(mutex_);
connections_.insert(connections_.end(), connection);
started_counter_ += 1;
} else {
connections_.insert(connections_.end(), connection);
started_counter_ += 1;
}
connection->asyncAccept();
}
void
TcpConnectionPool::stop(const TcpConnectionPtr& connection) {
if (util::MultiThreadingMgr::instance().getMode()) {
std::lock_guard<std::mutex> lk(mutex_);
size_t before = connections_.size();
connections_.remove(connection);
size_t after = connections_.size();
stopped_counter_ += before - after;
} else {
size_t before = connections_.size();
connections_.remove(connection);
size_t after = connections_.size();
stopped_counter_ += before - after;
}
connection->close();
}
void
TcpConnectionPool::shutdown(const TcpConnectionPtr& connection) {
if (util::MultiThreadingMgr::instance().getMode()) {
std::lock_guard<std::mutex> lk(mutex_);
size_t before = connections_.size();
connections_.remove(connection);
size_t after = connections_.size();
stopped_counter_ += before - after;
} else {
size_t before = connections_.size();
connections_.remove(connection);
size_t after = connections_.size();
stopped_counter_ += before - after;
}
connection->shutdown();
}
void
TcpConnectionPool::stopAll() {
if (util::MultiThreadingMgr::instance().getMode()) {
std::lock_guard<std::mutex> lk(mutex_);
stopAllInternal();
} else {
stopAllInternal();
}
}
void
TcpConnectionPool::stopAllInternal() {
for (auto const& connection : connections_) {
connection->close();
}
size_t cnt = connections_.size();
connections_.clear();
stopped_counter_ += cnt;
}
size_t
TcpConnectionPool::usedByRemoteIp(const IOAddress& remote_ip,
size_t& total_connections) {
if (util::MultiThreadingMgr::instance().getMode()) {
std::lock_guard<std::mutex> lk(mutex_);
return (usedByRemoteIpInternal(remote_ip, total_connections));
} else {
return (usedByRemoteIpInternal(remote_ip, total_connections));
}
}
size_t
TcpConnectionPool::usedByRemoteIpInternal(const IOAddress& remote_ip,
size_t& total_connections) {
total_connections = connections_.size();
size_t cnt = 0;
for (auto const& conn : connections_) {
auto const& ep = conn->getRemoteEndpoint();
if ((ep != TcpConnection::NO_ENDPOINT()) &&
(IOAddress(ep.address()) == remote_ip)) {
++cnt;
}
}
return (cnt);
}
}
}
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