tree 091a9bcefb71a69272ba3ccf8f2a1072e4a5215f
parent 5a3b3f8a743d4a8e2db9991a3808d82d528264a1
author Josh Lehan <krellan@google.com> 1616012991 -0700
committer Josh Lehan <krellan@google.com> 1617352872 -0700

Add external write hook to Sensor

Adds a member variable to Sensor, a lambda,
initialized to an empty function by default.

By assigning this variable to their own lambda,
a user of Sensor can receive notifications whenever an external write
happens, without having to modify any code within Sensor itself.

This is necessary to support ExternalSensor, but is generic enough
to help other dbus-sensors daemons, should the need ever arise.

Tested: In conjunction with ExternalSensor, works for me,
external writes correctly cause the lambda to be executed.

Signed-off-by: Josh Lehan <krellan@google.com>
Change-Id: I67571327d870e7c718fa4f25e91a6598daabcf3d