add health_metric implementation
Add the interface and implementation for the health_metric to be used
in the rewrite for phosphor-health-monitor.
This change is in relation to following design and D-Bus interface
update -
https://gerrit.openbmc.org/c/openbmc/docs/+/64917
https://gerrit.openbmc.org/c/openbmc/phosphor-dbus-interfaces/+/64914
gtest added for UT.
Change-Id: Iffcc52f9dff712890377b1222fd7e7d5d6661eaf
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/health_metric.hpp b/health_metric.hpp
new file mode 100644
index 0000000..e0c75f9
--- /dev/null
+++ b/health_metric.hpp
@@ -0,0 +1,79 @@
+#pragma once
+
+#include "health_metric_config.hpp"
+#include "health_utils.hpp"
+
+#include <xyz/openbmc_project/Association/Definitions/server.hpp>
+#include <xyz/openbmc_project/Inventory/Item/Bmc/server.hpp>
+#include <xyz/openbmc_project/Metric/Value/server.hpp>
+
+#include <deque>
+#include <tuple>
+
+namespace phosphor::health::metric
+{
+
+using phosphor::health::utils::paths_t;
+using phosphor::health::utils::startUnit;
+using AssociationIntf =
+ sdbusplus::xyz::openbmc_project::Association::server::Definitions;
+using ValueIntf = sdbusplus::xyz::openbmc_project::Metric::server::Value;
+using PathIntf =
+ sdbusplus::common::xyz::openbmc_project::metric::Value::namespace_path;
+static constexpr auto BmcPath =
+ sdbusplus::common::xyz::openbmc_project::metric::Value::bmc;
+using BmcIntf = sdbusplus::xyz::openbmc_project::Inventory::Item::server::Bmc;
+using MetricIntf =
+ sdbusplus::server::object_t<ValueIntf, ThresholdIntf, AssociationIntf>;
+
+struct MValue
+{
+ /** @brief Value for end user consumption */
+ double user;
+ /** @brief Value for threshold monitor */
+ double monitor;
+};
+
+class HealthMetric : public MetricIntf
+{
+ public:
+ HealthMetric() = delete;
+ HealthMetric(const HealthMetric&) = delete;
+ HealthMetric(HealthMetric&&) = delete;
+ virtual ~HealthMetric() = default;
+
+ HealthMetric(sdbusplus::bus::bus& bus, phosphor::health::metric::Type type,
+ const config::HealthMetric& config, const paths_t& bmcPaths) :
+ MetricIntf(bus, getPath(config.subType).c_str(), action::defer_emit),
+ bus(bus), type(type), config(config)
+ {
+ create(bmcPaths);
+ this->emit_object_added();
+ }
+
+ /** @brief Update the health metric with the given value */
+ void update(MValue value);
+
+ private:
+ /** @brief Create a new health metric object */
+ void create(const paths_t& bmcPaths);
+ /** @brief Init properties for the health metric object */
+ void initProperties();
+ /** @brief Check specified threshold for the given value */
+ void checkThreshold(ThresholdIntf::Type type, ThresholdIntf::Bound bound,
+ double value);
+ /** @brief Check all thresholds for the given value */
+ void checkThresholds(double value);
+ /** @brief Get the object path for the given subtype */
+ auto getPath(SubType subType) -> std::string;
+ /** @brief D-Bus bus connection */
+ sdbusplus::bus::bus& bus;
+ /** @brief Metric type */
+ phosphor::health::metric::Type type;
+ /** @brief Metric configuration */
+ const config::HealthMetric config;
+ /** @brief Window for metric history */
+ std::deque<double> history;
+};
+
+} // namespace phosphor::health::metric