Initial chassis state management code

This is just the basics to get the generated code
compiling and to verify the basic dbus interfaces.

Change-Id: I335964da456d8173e2ce792c6614770da43303b4
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/xyz.openbmc_project.State.Chassis.cpp b/xyz.openbmc_project.State.Chassis.cpp
new file mode 100644
index 0000000..21c4343
--- /dev/null
+++ b/xyz.openbmc_project.State.Chassis.cpp
@@ -0,0 +1,271 @@
+#include <algorithm>
+#include <sdbusplus/server.hpp>
+#include <sdbusplus/exception.hpp>
+#include <xyz/openbmc_project/State/Chassis/server.hpp>
+
+namespace sdbusplus
+{
+namespace xyz
+{
+namespace openbmc_project
+{
+namespace State
+{
+namespace server
+{
+
+Chassis::Chassis(bus::bus& bus, const char* path)
+        : _xyz_openbmc_project_State_Chassis_interface(
+                bus, path, _interface, _vtable, this)
+{
+}
+
+
+
+auto Chassis::requestedPowerTransition() const ->
+        Transition
+{
+    return _requestedPowerTransition;
+}
+
+int Chassis::_callback_get_RequestedPowerTransition(
+        sd_bus* bus, const char* path, const char* interface,
+        const char* property, sd_bus_message* reply, void* context,
+        sd_bus_error* error)
+{
+    using sdbusplus::server::binding::details::convertForMessage;
+
+    try
+    {
+        auto m = message::message(sd_bus_message_ref(reply));
+
+        auto o = static_cast<Chassis*>(context);
+        m.append(convertForMessage(o->requestedPowerTransition()));
+    }
+    catch(sdbusplus::internal_exception_t& e)
+    {
+        sd_bus_error_set_const(error, e.name(), e.description());
+        return -EINVAL;
+    }
+
+    return true;
+}
+
+auto Chassis::requestedPowerTransition(Transition value) ->
+        Transition
+{
+    if (_requestedPowerTransition != value)
+    {
+        _requestedPowerTransition = value;
+        _xyz_openbmc_project_State_Chassis_interface.property_changed("RequestedPowerTransition");
+    }
+
+    return _requestedPowerTransition;
+}
+
+int Chassis::_callback_set_RequestedPowerTransition(
+        sd_bus* bus, const char* path, const char* interface,
+        const char* property, sd_bus_message* value, void* context,
+        sd_bus_error* error)
+{
+    try
+    {
+        auto m = message::message(sd_bus_message_ref(value));
+
+        auto o = static_cast<Chassis*>(context);
+
+        std::string v{};
+        m.read(v);
+        o->requestedPowerTransition(convertTransitionFromString(v));
+    }
+    catch(sdbusplus::internal_exception_t& e)
+    {
+        sd_bus_error_set_const(error, e.name(), e.description());
+        return -EINVAL;
+    }
+
+    return true;
+}
+
+namespace details
+{
+namespace Chassis
+{
+static const auto _property_RequestedPowerTransition =
+    utility::tuple_to_array(message::types::type_id<
+            std::string>());
+}
+}
+auto Chassis::currentPowerState() const ->
+        PowerState
+{
+    return _currentPowerState;
+}
+
+int Chassis::_callback_get_CurrentPowerState(
+        sd_bus* bus, const char* path, const char* interface,
+        const char* property, sd_bus_message* reply, void* context,
+        sd_bus_error* error)
+{
+    using sdbusplus::server::binding::details::convertForMessage;
+
+    try
+    {
+        auto m = message::message(sd_bus_message_ref(reply));
+
+        auto o = static_cast<Chassis*>(context);
+        m.append(convertForMessage(o->currentPowerState()));
+    }
+    catch(sdbusplus::internal_exception_t& e)
+    {
+        sd_bus_error_set_const(error, e.name(), e.description());
+        return -EINVAL;
+    }
+
+    return true;
+}
+
+auto Chassis::currentPowerState(PowerState value) ->
+        PowerState
+{
+    if (_currentPowerState != value)
+    {
+        _currentPowerState = value;
+        _xyz_openbmc_project_State_Chassis_interface.property_changed("CurrentPowerState");
+    }
+
+    return _currentPowerState;
+}
+
+int Chassis::_callback_set_CurrentPowerState(
+        sd_bus* bus, const char* path, const char* interface,
+        const char* property, sd_bus_message* value, void* context,
+        sd_bus_error* error)
+{
+    try
+    {
+        auto m = message::message(sd_bus_message_ref(value));
+
+        auto o = static_cast<Chassis*>(context);
+
+        std::string v{};
+        m.read(v);
+        o->currentPowerState(convertPowerStateFromString(v));
+    }
+    catch(sdbusplus::internal_exception_t& e)
+    {
+        sd_bus_error_set_const(error, e.name(), e.description());
+        return -EINVAL;
+    }
+
+    return true;
+}
+
+namespace details
+{
+namespace Chassis
+{
+static const auto _property_CurrentPowerState =
+    utility::tuple_to_array(message::types::type_id<
+            std::string>());
+}
+}
+
+
+namespace
+{
+/** String to enum mapping for Chassis::Transition */
+static const std::tuple<const char*, Chassis::Transition> mappingChassisTransition[] =
+        {
+            std::make_tuple( "xyz.openbmc_project.State.Chassis.Transition.Off",                 Chassis::Transition::Off ),
+            std::make_tuple( "xyz.openbmc_project.State.Chassis.Transition.On",                 Chassis::Transition::On ),
+        };
+
+} // anonymous namespace
+
+auto Chassis::convertTransitionFromString(std::string& s) ->
+        Transition
+{
+    auto i = std::find_if(
+            std::begin(mappingChassisTransition),
+            std::end(mappingChassisTransition),
+            [&s](auto& e){ return 0 == strcmp(s.c_str(), std::get<0>(e)); } );
+    if (std::end(mappingChassisTransition) == i)
+    {
+        throw sdbusplus::exception::InvalidEnumString();
+    }
+    else
+    {
+        return std::get<1>(*i);
+    }
+}
+
+std::string convertForMessage(Chassis::Transition v)
+{
+    auto i = std::find_if(
+            std::begin(mappingChassisTransition),
+            std::end(mappingChassisTransition),
+            [v](auto& e){ return v == std::get<1>(e); });
+    return std::get<0>(*i);
+}
+
+namespace
+{
+/** String to enum mapping for Chassis::PowerState */
+static const std::tuple<const char*, Chassis::PowerState> mappingChassisPowerState[] =
+        {
+            std::make_tuple( "xyz.openbmc_project.State.Chassis.PowerState.Off",                 Chassis::PowerState::Off ),
+            std::make_tuple( "xyz.openbmc_project.State.Chassis.PowerState.On",                 Chassis::PowerState::On ),
+        };
+
+} // anonymous namespace
+
+auto Chassis::convertPowerStateFromString(std::string& s) ->
+        PowerState
+{
+    auto i = std::find_if(
+            std::begin(mappingChassisPowerState),
+            std::end(mappingChassisPowerState),
+            [&s](auto& e){ return 0 == strcmp(s.c_str(), std::get<0>(e)); } );
+    if (std::end(mappingChassisPowerState) == i)
+    {
+        throw sdbusplus::exception::InvalidEnumString();
+    }
+    else
+    {
+        return std::get<1>(*i);
+    }
+}
+
+std::string convertForMessage(Chassis::PowerState v)
+{
+    auto i = std::find_if(
+            std::begin(mappingChassisPowerState),
+            std::end(mappingChassisPowerState),
+            [v](auto& e){ return v == std::get<1>(e); });
+    return std::get<0>(*i);
+}
+
+const vtable::vtable_t Chassis::_vtable[] = {
+    vtable::start(),
+    vtable::property("RequestedPowerTransition",
+                     details::Chassis::_property_RequestedPowerTransition
+                        .data(),
+                     _callback_get_RequestedPowerTransition,
+                     _callback_set_RequestedPowerTransition,
+                     vtable::property_::emits_change),
+    vtable::property("CurrentPowerState",
+                     details::Chassis::_property_CurrentPowerState
+                        .data(),
+                     _callback_get_CurrentPowerState,
+                     _callback_set_CurrentPowerState,
+                     vtable::property_::emits_change),
+    vtable::end()
+};
+
+} // namespace server
+} // namespace State
+} // namespace openbmc_project
+} // namespace xyz
+} // namespace sdbusplus
+