When the daemon uses the containerd runtime (io.containerd.runhcs.v1),
the runhcs shim emits container metrics as the typeurl
`containerd.runhcs.stats.v1.Statistics`. moby never imported the package
that registers this type, so `typeurl.UnmarshalAny` failed with "type not
found" and `docker stats` reported all zeros for running Windows
containers.
Import the hcsshim runhcs stats package so its proto init registers the
typeurl, and handle `*wstats.Statistics` in `InterfaceToStats`, converting
the Windows container statistics (processor time is reported in
nanoseconds and converted to the 100ns units used by hcsshim.Statistics)
into the shape consumed by stats_windows.go. Also replace the bare type
assertion with a type switch so unexpected payloads no longer panic.
Un-skip TestStatsAllNoStream and TestStatsAllRunningNoStream, and add a
unit test for the conversion.
Signed-off-by: Dawei Wei <wei.dawei.cn@gmail.com>
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