Update event initialization

Using a null dbus message to the event signal will perform the necessary
steps to initialize the event parameters using the given signal
handler's function directly.

i.e.) In the case for subscribing to PropertiesChanged signals,
initially the given property must be read. When the PropertiesChanged
signal struct is given a null message, it finds the property, reads the
value, and then can perform the given signal handler function directly.
This produces the same functional path as receiving a PropertiesChanged
signal containing the property value within the message.

Change-Id: I35575cfff66eb0305156be786cb1f5536d42bb1c
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/control/types.hpp b/control/types.hpp
index f6b2b60..d3ddb16 100644
--- a/control/types.hpp
+++ b/control/types.hpp
@@ -56,8 +56,8 @@ using PrecondGroup = std::tuple<std::string,
 constexpr auto intervalPos = 0;
 using Timer = std::tuple<std::chrono::seconds>;
 
-constexpr auto signaturePos = 0;
-constexpr auto handlerObjPos = 1;
+constexpr auto sigMatchPos = 0;
+constexpr auto sigHandlerPos = 1;
 using Signal = std::tuple<std::string, Handler>;
 
 constexpr auto groupPos = 0;
@@ -70,9 +70,10 @@ using SetSpeedEvent = std::tuple<Group,
                                  std::vector<Signal>>;
 
 constexpr auto eventGroupPos = 0;
-constexpr auto eventHandlerPos = 1;
-constexpr auto eventActionsPos = 2;
-using EventData = std::tuple<Group, Handler, std::vector<Action>>;
+constexpr auto eventMatchPos = 1;
+constexpr auto eventHandlerPos = 2;
+constexpr auto eventActionsPos = 3;
+using EventData = std::tuple<Group, std::string, Handler, std::vector<Action>>;
 
 constexpr auto timerTimerPos = 0;
 using TimerEvent = std::tuple<phosphor::fan::util::Timer>;