src/MctpReactorDevice.hpp

#pragma once

#include "MctpEndpoint.hpp"
#include "MctpUtil.hpp"

#include <sdbusplus/asio/connection.hpp>
#include <sdbusplus/bus/match.hpp>
#include <sdbusplus/message.hpp>

/**
 * @brief An implementation of MctpDevice in terms of D-Bus interfaces exposed
 *        by @c mctpreactor.
 *
 * The construction or destruction of an MctpReactorDevice is not required to be
 * correlated with signals from @c mctpreactor. For instance, EntityManager may
 * expose the existence of an MCTP-capable device through its usual
 * configuration mechanisms.
 */
class MctpReactorDevice :
    public MctpDevice,
    public std::enable_shared_from_this<MctpReactorDevice>
{
  public:
    MctpReactorDevice() = delete;
    MctpReactorDevice(
        const std::shared_ptr<sdbusplus::asio::connection>& connection,
        const std::string& deviceObjectPath, std::optional<int> busNumber,
        std::optional<int> address);
    MctpReactorDevice(
        const std::shared_ptr<sdbusplus::asio::connection>& connection,
        const std::string& deviceObjectPath, const BusInfo& busInfo,
        std::optional<int> busNumber, std::optional<int> address);
    MctpReactorDevice(const MctpDevice& other) = delete;
    MctpReactorDevice(MctpDevice&& other) = delete;
    ~MctpReactorDevice() override;

    void setup(std::function<void(const std::error_code& ec,
                                  const std::shared_ptr<MctpEndpoint>& ep)>&&
                   action) override;
    void remove() override;
    std::string describe() const override;

  private:
    static void onEndpointInterfacesRemoved(
        const std::weak_ptr<MctpReactorDevice>& weak,
        const std::string& endpointObjectPath, sdbusplus::message_t& msg);

    void finaliseEndpoint(
        const std::string& endpointObjectPath,
        std::function<void(const std::error_code& ec,
                           const std::shared_ptr<MctpEndpoint>& ep)>&& action);

    void endpointRemoved();

    std::shared_ptr<sdbusplus::asio::connection> connection;
    const std::string deviceObjectPath;
    std::string resolvedEndpointPath;
    const std::string prettyObjectName; // Suffix of deviceObjectPath.
    const bool isI2cAccessible;
    const int i2cBusNumber;             // Invalid if isI2cAccessible is false.
    const int i2cAddress;               // Invalid if isI2cAccessible is false.
    std::shared_ptr<MctpdEndpoint> endpoint;
    std::unique_ptr<sdbusplus::bus::match_t> removeMatch;

    BusInfo targetBusInfo;
    std::optional<MctpCallbackToken> callbackToken;
    std::function<void(const std::error_code&,
                       const std::shared_ptr<MctpEndpoint>&)>
        savedAction;
};