3bc50c45ba
The formatter.ContainerStats struct exposes its Mutex. This is a bad design and should be fixed. To fix that, I separated the statistics attributes from ContainerStats to StatsEntry and hid the mutex. Notice that the mutex protects both the `err` field and the statistics attributes. Then, implemented SetStatistics, SetError, GetStatistics and GetError to avoid races. Moreover, to make this less granular, I decided to replace the read-write mutex with the regular mutex and to pass a StatsEntry slice to formatter.ContainerStatsWrite Signed-off-by: Boaz Shuster <ripcurld.github@gmail.com>