tree 606f49f48fb3b61422b4657f83019201c337d5d2
parent 14dbd333439f34c648b9f783ffa656ef565de0cc
author Alex Deymo <deymo@google.com> 1456428013 -0800
committer Alex Deymo <deymo@google.com> 1457078380 +0000

Implement suspend, resume and cancel the download.

The DownloadAction can now be suspended and resumed, using the existing
libcurl hooks to pause the download. For canceling an ongoing update,
this patch leverages the existing StopProcessing method previously used
in unittest only with a slight change: Stopping the ActionProcessor
also removes all the pending actions.

The LibcurlHttpFetcher Pause/Unpause methods where improved to support
(not crash) if paused in circumstances where there isn't a current
connection, like when waiting for the proxy resolver and when trying to
reconnect.

Finally, the value of ongoing_update_ is now properly set in the
UpdateAttempter.

Bug: 27047026
TEST=Tested suspending, resuming and canceling the update on a device.
TEST=Added unittest for the Pause/Unpause logic.

Change-Id: I0df1e1a8cf70a3b736bc9cd4899d37813f381b94