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
diff --git a/common/action_processor.h b/common/action_processor.h
index 050eee9..c9c179e 100644
--- a/common/action_processor.h
+++ b/common/action_processor.h
@@ -51,8 +51,9 @@
virtual void StartProcessing();
// Aborts processing. If an Action is running, it will have
- // TerminateProcessing() called on it. The Action that was running
- // will be lost and must be re-enqueued if this Processor is to use it.
+ // TerminateProcessing() called on it. The Action that was running and all the
+ // remaining actions will be lost and must be re-enqueued if this Processor is
+ // to use it.
void StopProcessing();
// Suspend the processing. If an Action is running, it will have the
@@ -63,7 +64,7 @@
void SuspendProcessing();
// Resume the suspended processing. If the ActionProcessor is not suspended
- // or not running on the first place this method performs no action.
+ // or not running in the first place this method performs no action.
void ResumeProcessing();
// Returns true iff the processing was started but not yet completed nor