update_engine: Add staging to update_attempter and omaha_request
Modify update_attempter and omaha_request so that they take the user's
staging settings into account. This includes:
* Turning off scattering if staging is on.
* Preserving scattering values if staging is off.
* Setting staging related persisted values if staging is on.
* Deleting the corresponding persisted values if staging is off.
* Making omaha use the max wait time for staging as its max scatter
period if staging is on.
* Add the corresponding unittests for this.
BUG=chromium:858621
TEST=cros_workon_make update_engine --test
Change-Id: I501f90d9e195b5ceef61d3eac67ab52051793ae9
Reviewed-on: https://chromium-review.googlesource.com/1141217
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Adolfo Higueros <adokar@google.com>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
diff --git a/omaha_request_action.cc b/omaha_request_action.cc
index e08a868..c9bc269 100644
--- a/omaha_request_action.cc
+++ b/omaha_request_action.cc
@@ -1481,13 +1481,18 @@
system_state_->clock()->GetWallclockTime() - update_first_seen_at;
TimeDelta max_scatter_period =
TimeDelta::FromDays(output_object->max_days_to_scatter);
+ int64_t staging_wait_time_in_days = 0;
+ // Use staging and its default max value if staging is on.
+ if (system_state_->prefs()->GetInt64(kPrefsWallClockStagingWaitPeriod,
+ &staging_wait_time_in_days) &&
+ staging_wait_time_in_days > 0)
+ max_scatter_period = TimeDelta::FromDays(kMaxWaitTimeStagingInDays);
LOG(INFO) << "Waiting Period = "
<< utils::FormatSecs(params_->waiting_period().InSeconds())
<< ", Time Elapsed = "
<< utils::FormatSecs(elapsed_time.InSeconds())
- << ", MaxDaysToScatter = "
- << max_scatter_period.InDays();
+ << ", MaxDaysToScatter = " << max_scatter_period.InDays();
if (!output_object->deadline.empty()) {
// The deadline is set for all rules which serve a delta update from a