commit a55a907e7220bede5f4c76ca6d99fad2a0c1f00d
author Thu Ba Nguyen <thu@os.amperecomputing.com> Wed Apr 07 09:44:33 2021 +0700
committer Patrick Williams <patrick@stwcx.xyz> Tue Apr 20 16:30:47 2021 +0000
tree 9b6c7ecbc8f6594ed4f18fdccaa17a9594865426
parent 4294e6d2126f5d1bec195cb74671afe373e0f30d

Add try catch when getting the sensor values

When the driver of the source sensors is binding, the sensor service name
is available but the value property can be unavailable in short time.
Getting the sensor value without try catch can cause exception "sd_bus_call: \
org.freedesktop.DBus.Error.ServiceUnknown: The name is not activatable".
This commit catchs the exception when getting sensor value to cover that case.

Signed-off-by: Thu Ba Nguyen <thu@os.amperecomputing.com>
Change-Id: If946f20e38020767d418d6d80caf4e74db7b49ab

dbusSensor.hpp

diff --git a/dbusSensor.hpp b/dbusSensor.hpp
index faba2c6..93e8e17 100644
--- a/dbusSensor.hpp
+++ b/dbusSensor.hpp
@@ -40,8 +40,15 @@
             }
         }
 
-        return getDbusProperty<double>(bus, servName, path, sensorIntf,
-                                       "Value");
+        try
+        {
+            return getDbusProperty<double>(bus, servName, path, sensorIntf,
+                                           "Value");
+        }
+        catch (const std::exception& e)
+        {
+            return std::numeric_limits<double>::quiet_NaN();
+        }
     }
 
   private: