Listener:Implement Present property callback
This commit implements Present property callback in Listener. For
hotPluggable FRUs whose present property is toggled by external
application based on their actual presence detection, vpd-manager needs
to monitor "Present" property and collect/delete FRU VPD accordingly.
Test:
```
- On Everest system, toggle Present property of fan0 from busctl
- Observer callback getting triggered
```
Change-Id: Ia558306417adf18155b5b363fc9caa797bda250f
Signed-off-by: Souvik Roy <souvikroyofficial10@gmail.com>
diff --git a/vpd-manager/include/utility/json_utility.hpp b/vpd-manager/include/utility/json_utility.hpp
index 9a78b68..4bf3846 100644
--- a/vpd-manager/include/utility/json_utility.hpp
+++ b/vpd-manager/include/utility/json_utility.hpp
@@ -1158,5 +1158,45 @@
return nlohmann::json{};
}
}
+
+/**
+ * @brief API to get list of FRUs for which "monitorPresence" is true.
+ *
+ * @param[in] i_sysCfgJsonObj - System config JSON object.
+ *
+ * @return On success, returns list of FRUs for which "monitorPresence" is true,
+ * empty list on error.
+ */
+inline std::vector<types::Path> getFrusWithPresenceMonitoring(
+ const nlohmann::json& i_sysCfgJsonObj) noexcept
+{
+ std::vector<types::Path> l_frusWithPresenceMonitoring;
+ try
+ {
+ if (!i_sysCfgJsonObj.contains("frus"))
+ {
+ throw JsonException("Missing frus tag in system config JSON.");
+ }
+
+ const nlohmann::json& l_listOfFrus =
+ i_sysCfgJsonObj["frus"].get_ref<const nlohmann::json::object_t&>();
+
+ for (const auto& l_aFru : l_listOfFrus)
+ {
+ if (l_aFru.at(0).value("monitorPresence", false))
+ {
+ l_frusWithPresenceMonitoring.emplace_back(
+ l_aFru.at(0).value("inventoryPath", ""));
+ }
+ }
+ }
+ catch (const std::exception& l_ex)
+ {
+ logging::logMessage(
+ "Failed to get list of FRUs with presence monitoring, error: " +
+ std::string(l_ex.what()));
+ }
+ return l_frusWithPresenceMonitoring;
+}
} // namespace jsonUtility
} // namespace vpd