Get inventory manager service name

Retrieve the inventory manager's service name from object mapper.

Change-Id: I56c67012105b5bc389763608c998ccc756b1104a
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>

2 files changed, 38 insertions, 4 deletions

diff --git a/fan_enclosure.cpp b/fan_enclosure.cpp
index 5461b08..2bed251 100644
--- a/fan_enclosure.cpp
+++ b/fan_enclosure.cpp
@@ -9,6 +9,15 @@ namespace fan
 namespace presence
 {
 
+//TODO Should get these from phosphor-objmgr config.h
+constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper";
+constexpr auto MAPPER_PATH = "/xyz/openbmc_project/ObjectMapper";
+constexpr auto MAPPER_INTERFACE = "xyz.openbmc_project.ObjectMapper";
+
+//TODO Should get these from phosphor-inventory-manager config.h
+constexpr auto INVENTORY_PATH = "/xyz/openbmc_project/inventory";
+constexpr auto INVENTORY_INTF = "xyz.openbmc_project.Inventory.Manager";
+
 FanEnclosure::ObjectMap FanEnclosure::getObjectMap()
 {
     ObjectMap invObj;
@@ -28,15 +37,39 @@ FanEnclosure::ObjectMap FanEnclosure::getObjectMap()
     return invObj;
 }
 
-void FanEnclosure::addInventory()
+std::string FanEnclosure::getInvService()
 {
-    //TODO Add this fan to inventory
+    auto mapperCall = bus.new_method_call(MAPPER_BUSNAME,
+                                          MAPPER_PATH,
+                                          MAPPER_INTERFACE,
+                                          "GetObject");
+
+    mapperCall.append(INVENTORY_PATH);
+    mapperCall.append(std::vector<std::string>({INVENTORY_INTF}));
+
+    auto mapperResponseMsg = bus.call(mapperCall);
+    if (mapperResponseMsg.is_method_error())
+    {
+        //TODO Retry or throw exception/log error?
+    }
+
+    std::map<std::string, std::vector<std::string>> mapperResponse;
+    mapperResponseMsg.read(mapperResponse);
+
+    if (mapperResponse.empty())
+    {
+        //TODO Nothing found, throw exception/log error?
+    }
+
+    return mapperResponse.begin()->first;
 }
 
 void FanEnclosure::updInventory()
 {
     //Get inventory object for this fan
     ObjectMap invObj = getObjectMap();
+    //Get inventory manager service name from mapper
+    std::string invService = getInvService();
     //TODO Update inventory for this fan
 }
 
diff --git a/fan_enclosure.hpp b/fan_enclosure.hpp
index 3876cea..cd9f689 100644
--- a/fan_enclosure.hpp
+++ b/fan_enclosure.hpp
@@ -40,7 +40,7 @@ class FanEnclosure
                         fanDesc(std::get<1>(fanProp))
         {
             //Add this fan to inventory
-            addInventory();
+            updInventory();
         }
 
         void updInventory();
@@ -53,7 +53,8 @@ class FanEnclosure
         const std::string fanDesc;
         std::vector<std::unique_ptr<Sensor>> sensors;
 
-        void addInventory();
+        //TODO openbmc/openbmc#1299 - Move getInvService() to a utility file
+        std::string getInvService();
         ObjectMap getObjectMap();
 
 };