nl_route_dump_task.hxx

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#pragma once
 
#include <stdint.h>
#include <expected>
#include <memory_resource>
#include <optional>
#include <system_error>
 
#include "rtaco/events/nl_route_event.hxx"
#include "rtaco/tasks/nl_route_task.hxx"
 
struct nlmsghdr;
 
namespace llmx {
namespace rtaco {
 
class SocketGuard;

class RouteDumpTask : public RouteTask<RouteDumpTask, RouteEventList> {
    RouteEventList learned_;
 
public:
    RouteDumpTask(SocketGuard& socket_guard, std::pmr::memory_resource* pmr,
            uint16_t ifindex, uint32_t sequence) noexcept;

    void prepare_request();

    auto process_message(const nlmsghdr& header)
            -> std::optional<std::expected<RouteEventList, std::error_code>>;
 
private:
    auto handle_done() -> std::expected<RouteEventList, std::error_code>;
 
    auto handle_error(const nlmsghdr& header)
            -> std::expected<RouteEventList, std::error_code>;
 
    auto dispatch_route(const nlmsghdr& header)
            -> std::optional<std::expected<RouteEventList, std::error_code>>;
};
 
} // namespace rtaco
} // namespace llmx