ramoops_manager: Handle D-Bus exceptions

Remove the deprecated is_method_error() method, and add try-catch to
handle the exceptions.

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: Ibd12f1fdf05aede82bfc8b3c58e4cfd6a8e3c612
diff --git a/ramoops_manager.cpp b/ramoops_manager.cpp
index 5fed14b..16ec7e8 100644
--- a/ramoops_manager.cpp
+++ b/ramoops_manager.cpp
@@ -40,24 +40,17 @@
                                     MAPPER_INTERFACE, "GetObject");
     mapper.append(OBJ_INTERNAL, std::set<std::string>({IFACE_INTERNAL}));
 
-    auto mapperResponseMsg = b.call(mapper);
-    if (mapperResponseMsg.is_method_error())
-    {
-        log<level::ERR>("Error in mapper call");
-        return;
-    }
-
     std::map<std::string, std::set<std::string>> mapperResponse;
     try
     {
+        auto mapperResponseMsg = b.call(mapper);
         mapperResponseMsg.read(mapperResponse);
     }
     catch (const sdbusplus::exception::SdBusError& e)
     {
         log<level::ERR>(
-            fmt::format(
-                "Failed to parse dump create message, error({}), REPLY_SIG({})",
-                e.what(), mapperResponseMsg.get_signature())
+            fmt::format("Failed to parse dump create message, error({})",
+                        e.what())
                 .c_str());
         return;
     }
@@ -71,7 +64,16 @@
     auto m =
         b.new_method_call(host.c_str(), OBJ_INTERNAL, IFACE_INTERNAL, "Create");
     m.append(RAMOOPS, files);
-    b.call_noreply(m);
+    try
+    {
+        b.call_noreply(m);
+    }
+    catch (const sdbusplus::exception::SdBusError& e)
+    {
+        log<level::ERR>(
+            fmt::format("Failed to create ramoops dump, errormsg({})", e.what())
+                .c_str());
+    }
 }
 
 } // namespace ramoops