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https://github.com/boostorg/mqtt5.git
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d78fdd3208
Summary: * per-operation cancellation changed: total/partial signals only prevent further resending, terminal signal cancels the whole client Reviewers: ivica Reviewed By: ivica Subscribers: korina Differential Revision: https://repo.mireo.local/D27246
95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
#ifndef ASYNC_MQTT5_SENTRY_OP_HPP
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#define ASYNC_MQTT5_SENTRY_OP_HPP
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#include <boost/asio/cancellation_signal.hpp>
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#include <boost/asio/error.hpp>
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#include <boost/asio/prepend.hpp>
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#include <boost/asio/recycling_allocator.hpp>
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#include <boost/asio/steady_timer.hpp>
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#include <async_mqtt5/error.hpp>
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#include <async_mqtt5/types.hpp>
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#include <async_mqtt5/impl/disconnect_op.hpp>
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namespace async_mqtt5::detail {
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namespace asio = boost::asio;
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template <typename ClientService>
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class sentry_op {
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using client_service = ClientService;
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struct on_timer {};
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struct on_disconnect {};
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static constexpr auto check_interval = std::chrono::seconds(3);
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std::shared_ptr<client_service> _svc_ptr;
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std::unique_ptr<asio::steady_timer> _sentry_timer;
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public:
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sentry_op(
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const std::shared_ptr<client_service>& svc_ptr
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) :
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_svc_ptr(svc_ptr),
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_sentry_timer(new asio::steady_timer(svc_ptr->get_executor()))
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{}
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sentry_op(sentry_op&&) noexcept = default;
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sentry_op(const sentry_op&) = delete;
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using executor_type = typename client_service::executor_type;
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executor_type get_executor() const noexcept {
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return _svc_ptr->get_executor();
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}
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using allocator_type = asio::recycling_allocator<void>;
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allocator_type get_allocator() const noexcept {
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return allocator_type {};
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}
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using cancellation_slot_type = asio::cancellation_slot;
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asio::cancellation_slot get_cancellation_slot() const noexcept {
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return _svc_ptr->_cancel_sentry.slot();
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}
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void perform() {
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_sentry_timer->expires_after(check_interval);
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_sentry_timer->async_wait(
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asio::prepend(std::move(*this), on_timer {})
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);
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}
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void operator()(on_timer, error_code ec) {
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get_cancellation_slot().clear();
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if (ec == asio::error::operation_aborted || !_svc_ptr->is_open())
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return;
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if (_svc_ptr->_replies.any_expired()) {
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auto props = disconnect_props {};
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// TODO add what packet was expected?
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props[prop::reason_string] = "No reply received within 20 seconds";
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auto svc_ptr = _svc_ptr;
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return async_disconnect(
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disconnect_rc_e::unspecified_error, props, false, svc_ptr,
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asio::prepend(std::move(*this), on_disconnect {})
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);
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}
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perform();
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}
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void operator()(on_disconnect, error_code ec) {
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get_cancellation_slot().clear();
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if (!ec)
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perform();
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}
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};
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} // end namespace async_mqtt5::detail
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#endif // !ASYNC_MQTT5_SENTRY_OP_HPP
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