update_engine: Add UMA stats for rollback
Adding the following UMA stats:
- UpdateEngine.Check.TargetVersion: first section of the Chrome OS
target version set by device policy. Sent during update checks if
target version policy is set.
- UpdateEngine.Check.RollbackTargetVersion: first section of the
Chrome OS target version if rollback is also allowed. Sent during
update checks if both policies are set.
- UpdateEngine.EnterpriseRollback.Success: first section of the
Chrome OS version to which rollback succeeded. Sent after
successful installation of the rollback image.
- UpdateEngine.EnterpriseRollback.Failure: first section of the
Chrome OS version to which rollback failed. Sent after
installation of the rollback image failed.
Chromium CL of the new histograms: crrev.com/c/1069129
BUG=chromium:843622
TEST='cros_run_unit_tests --board=caroline --packages update_engine'
Change-Id: I0b76fa286498ae0a1830a90034734ed9aa5efd3d
Reviewed-on: https://chromium-review.googlesource.com/1062033
Commit-Ready: ChromeOS CL Exonerator Bot <[email protected]>
Tested-by: Marton Hunyady <[email protected]>
Reviewed-by: Amin Hassani <[email protected]>
Reviewed-by: Jesse Doherty <[email protected]>
diff --git a/metrics_reporter_stub.h b/metrics_reporter_stub.h
index d0f75ab..8b559f3 100644
--- a/metrics_reporter_stub.h
+++ b/metrics_reporter_stub.h
@@ -17,6 +17,8 @@
#ifndef UPDATE_ENGINE_METRICS_REPORTER_STUB_H_
#define UPDATE_ENGINE_METRICS_REPORTER_STUB_H_
+#include <string>
+
#include "update_engine/common/error_code.h"
#include "update_engine/metrics_constants.h"
#include "update_engine/metrics_reporter_interface.h"
@@ -33,6 +35,9 @@
void ReportRollbackMetrics(metrics::RollbackResult result) override {}
+ void ReportEnterpriseRollbackMetrics(
+ bool success, const std::string& rollback_version) override {}
+
void ReportDailyMetrics(base::TimeDelta os_age) override {}
void ReportUpdateCheckMetrics(
