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#include "wanda/control/connection.hpp"
#include "wanda/proto/message.hpp"
#include <boost/asio/completion_condition.hpp>
#include <boost/asio/read_until.hpp>
#include <boost/asio/write.hpp>
#include <boost/system/detail/error_code.hpp>
#include <boost/system/error_code.hpp>
#include <limits>
namespace wanda::control
{
connection::pointer make_connection(connection::protocol::socket && socket)
{
return std::make_shared<connection>(connection::key{}, std::move(socket));
}
connection::connection(connection::key key, connection::protocol::socket socket)
: keyed{key}
, m_socket{std::move(socket)}
{
}
bool connection::add(listener * listener)
{
auto [_, inserted] = m_listeners.insert(listener);
return inserted;
}
bool connection::remove(listener * listener)
{
return m_listeners.erase(listener);
}
void connection::start()
{
if (m_state == state::unknown)
{
m_state = state::fresh;
perform_read();
}
}
void connection::send(proto::message message)
{
m_output << message << '\n';
boost::asio::async_write(m_socket, m_out, boost::asio::transfer_exactly(message.size() + 1), [that = shared_from_this(), this](auto const & error, auto const length) {
if (error)
{
// TODO: Handle error
}
else
{
m_out.consume(length);
}
});
}
void connection::close()
{
auto error = boost::system::error_code{};
if (m_socket.cancel(error), error)
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
}
if (m_socket.close(error), error)
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
}
for (auto & listener : m_listeners)
{
listener->on_close(shared_from_this());
}
m_listeners.clear();
}
void connection::update(state state)
{
m_state = state;
}
connection::state connection::current_state() const
{
return m_state;
}
void connection::perform_read()
{
boost::asio::async_read_until(m_socket, m_in, '\n', [that = shared_from_this(), this](auto const & error, auto const length) {
if (error)
{
for (auto & listener : m_listeners)
{
listener->on_error(shared_from_this(), error);
}
close();
}
else
{
auto msg = proto::message{};
m_input >> msg;
if (!m_input)
{
m_input.ignore(std::numeric_limits<std::streamsize>::max());
m_input.clear();
}
else
{
for (auto & listener : m_listeners)
{
listener->on_received(shared_from_this(), msg);
}
}
perform_read();
}
});
}
} // namespace wanda::control
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