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0726e4cc3e
The recent change to collection via a "one-shot" Docker API call did not update the stream boolean argument. This results in the PreCPUStats values being zero and therefore breaking the CPU calculations which rely on this data. The base fix is to update the passed boolean parameter to match the desired non-streaming behaviour. The non-streaming API call correctly returns the PreCPUStats data which can be seen in the added unit test. The most recent change also modified the behaviour of the collectStats go routine, so that any error encountered results in the routine exiting. In the event this was a transient error, the container will continue to run, however, no stats will be collected until the task is stopped and replaced. This PR reverts the behaviour, so that an error encountered during a stats collection run results in the error being logged but the collection process continuing with a backoff used.