1 #pragma once 2 3 #include "systemd_service_parser.hpp" 4 #include "systemd_target_parser.hpp" 5 6 #include <sdbusplus/bus.hpp> 7 #include <sdbusplus/bus/match.hpp> 8 9 extern bool gVerbose; 10 11 namespace phosphor 12 { 13 namespace state 14 { 15 namespace manager 16 { 17 /** @class SystemdTargetLogging 18 * @brief Object to monitor input systemd targets and create corresponding 19 * input errors for on failures 20 */ 21 class SystemdTargetLogging 22 { 23 public: 24 SystemdTargetLogging() = delete; 25 SystemdTargetLogging(const SystemdTargetLogging&) = delete; 26 SystemdTargetLogging& operator=(const SystemdTargetLogging&) = delete; 27 SystemdTargetLogging(SystemdTargetLogging&&) = delete; 28 SystemdTargetLogging& operator=(SystemdTargetLogging&&) = delete; 29 virtual ~SystemdTargetLogging() = default; 30 31 SystemdTargetLogging(const TargetErrorData& targetData, 32 const ServiceMonitorData& serviceData, 33 sdbusplus::bus::bus& bus) : 34 targetData(targetData), 35 serviceData(serviceData), bus(bus), 36 systemdJobRemovedSignal( 37 bus, 38 sdbusplus::bus::match::rules::type::signal() + 39 sdbusplus::bus::match::rules::member("JobRemoved") + 40 sdbusplus::bus::match::rules::path( 41 "/org/freedesktop/systemd1") + 42 sdbusplus::bus::match::rules::interface( 43 "org.freedesktop.systemd1.Manager"), 44 std::bind(std::mem_fn(&SystemdTargetLogging::systemdUnitChange), 45 this, std::placeholders::_1)), 46 systemdNameOwnedChangedSignal( 47 bus, sdbusplus::bus::match::rules::nameOwnerChanged(), 48 std::bind( 49 std::mem_fn(&SystemdTargetLogging::processNameChangeSignal), 50 this, std::placeholders::_1)) 51 {} 52 53 /** 54 * @brief subscribe to the systemd signals 55 * 56 * This object needs to monitor systemd target changes so it can create 57 * the required error logs on failures 58 * 59 **/ 60 void subscribeToSystemdSignals(); 61 62 /** @brief Process the target fail and return error to log 63 * 64 * @note This is public for unit testing purposes 65 * 66 * @param[in] unit - The systemd unit that failed 67 * @param[in] result - The failure code from the system unit 68 * 69 * @return valid pointer to error to log, otherwise nullptr 70 */ 71 const std::string processError(const std::string& unit, 72 const std::string& result); 73 74 private: 75 /** @brief Call phosphor-logging to create error 76 * 77 * @param[in] error - The error to log 78 * @param[in] result - The failure code from the systemd unit 79 * @param[in] unit - The name of the failed unit 80 */ 81 void logError(const std::string& error, const std::string& result, 82 const std::string& unit); 83 84 /** @brief Check if systemd state change is one to monitor 85 * 86 * Instance specific interface to handle the detected systemd state 87 * change 88 * 89 * @param[in] msg - Data associated with subscribed signal 90 * 91 */ 92 void systemdUnitChange(sdbusplus::message::message& msg); 93 94 /** @brief Wait for systemd to show up on dbus 95 * 96 * Once systemd is on dbus, this application can subscribe to systemd 97 * signal changes 98 * 99 * @param[in] msg - Data associated with subscribed signal 100 * 101 */ 102 void processNameChangeSignal(sdbusplus::message::message& msg); 103 104 /** @brief Systemd targets to monitor and error logs to create */ 105 const TargetErrorData& targetData; 106 107 /** @brief Systemd targets to monitor and error logs to create */ 108 const ServiceMonitorData& serviceData; 109 110 /** @brief Persistent sdbusplus DBus bus connection. */ 111 sdbusplus::bus::bus& bus; 112 113 /** @brief Used to subscribe to dbus systemd JobRemoved signals **/ 114 sdbusplus::bus::match_t systemdJobRemovedSignal; 115 116 /** @brief Used to know when systemd has registered on dbus **/ 117 sdbusplus::bus::match_t systemdNameOwnedChangedSignal; 118 }; 119 120 } // namespace manager 121 } // namespace state 122 } // namespace phosphor 123