Andrew Geissler | 234a317 | 2019-08-09 14:30:02 -0500 | [diff] [blame^] | 1 | #pragma once |
| 2 | |
| 3 | #include <sdbusplus/bus.hpp> |
| 4 | #include <sdbusplus/bus/match.hpp> |
| 5 | #include <systemd_target_parser.hpp> |
| 6 | |
| 7 | extern bool gVerbose; |
| 8 | |
| 9 | namespace phosphor |
| 10 | { |
| 11 | namespace state |
| 12 | { |
| 13 | namespace manager |
| 14 | { |
| 15 | /** @class SystemdTargetLogging |
| 16 | * @brief Object to monitor input systemd targets and create corresponding |
| 17 | * input errors for on failures |
| 18 | */ |
| 19 | class SystemdTargetLogging |
| 20 | { |
| 21 | public: |
| 22 | SystemdTargetLogging() = delete; |
| 23 | SystemdTargetLogging(const SystemdTargetLogging&) = delete; |
| 24 | SystemdTargetLogging& operator=(const SystemdTargetLogging&) = delete; |
| 25 | SystemdTargetLogging(SystemdTargetLogging&&) = delete; |
| 26 | SystemdTargetLogging& operator=(SystemdTargetLogging&&) = delete; |
| 27 | virtual ~SystemdTargetLogging() = default; |
| 28 | |
| 29 | SystemdTargetLogging(const TargetErrorData& targetData, |
| 30 | sdbusplus::bus::bus& bus) : |
| 31 | targetData(targetData), |
| 32 | bus(bus), |
| 33 | systemdSignals( |
| 34 | bus, |
| 35 | sdbusplus::bus::match::rules::type::signal() + |
| 36 | sdbusplus::bus::match::rules::member("JobRemoved") + |
| 37 | sdbusplus::bus::match::rules::path( |
| 38 | "/org/freedesktop/systemd1") + |
| 39 | sdbusplus::bus::match::rules::interface( |
| 40 | "org.freedesktop.systemd1.Manager"), |
| 41 | std::bind(std::mem_fn(&SystemdTargetLogging::systemdUnitChange), |
| 42 | this, std::placeholders::_1)) |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * @brief subscribe to the systemd signals |
| 48 | * |
| 49 | * This object needs to monitor systemd target changes so it can create |
| 50 | * the required error logs on failures |
| 51 | * |
| 52 | **/ |
| 53 | void subscribeToSystemdSignals(); |
| 54 | |
| 55 | /** @brief Process the target fail and return error to log |
| 56 | * |
| 57 | * @note This is public for unit testing purposes |
| 58 | * |
| 59 | * @param[in] unit - The systemd unit that failed |
| 60 | * @param[in] result - The failure code from the system unit |
| 61 | * |
| 62 | * @return valid pointer to error to log, otherwise nullptr |
| 63 | */ |
| 64 | const std::string* processError(const std::string& unit, |
| 65 | const std::string& result); |
| 66 | |
| 67 | private: |
| 68 | /** @brief Call phosphor-logging to create error |
| 69 | * |
| 70 | * @param[in] error - The error to log |
| 71 | * @param[in] result - The failure code from the systemd unit |
| 72 | */ |
| 73 | void logError(const std::string& error, const std::string& result); |
| 74 | |
| 75 | /** @brief Check if systemd state change is one to monitor |
| 76 | * |
| 77 | * Instance specific interface to handle the detected systemd state |
| 78 | * change |
| 79 | * |
| 80 | * @param[in] msg - Data associated with subscribed signal |
| 81 | * |
| 82 | */ |
| 83 | void systemdUnitChange(sdbusplus::message::message& msg); |
| 84 | |
| 85 | /** @brief Systemd targets to monitor and error logs to create */ |
| 86 | const TargetErrorData& targetData; |
| 87 | |
| 88 | /** @brief Persistent sdbusplus DBus bus connection. */ |
| 89 | sdbusplus::bus::bus& bus; |
| 90 | |
| 91 | /** @brief Used to subscribe to dbus systemd signals **/ |
| 92 | sdbusplus::bus::match_t systemdSignals; |
| 93 | }; |
| 94 | |
| 95 | } // namespace manager |
| 96 | } // namespace state |
| 97 | } // namespace phosphor |