bootstat: Calculate and log the time_since_last_boot metric.
Bug: 28163811
Change-Id: I2e1350531f6a0fc891c270cfdfca6c8ad63f8040
diff --git a/bootstat/bootstat.cpp b/bootstat/bootstat.cpp
index 976ba66..7c1b7f3 100644
--- a/bootstat/bootstat.cpp
+++ b/bootstat/bootstat.cpp
@@ -205,7 +205,19 @@
void RecordBootComplete() {
BootEventRecordStore boot_event_store;
BootEventRecordStore::BootEventRecord record;
+
time_t uptime = bootstat::ParseUptime();
+ time_t current_time_utc = time(nullptr);
+
+ if (boot_event_store.GetBootEvent("last_boot_time_utc", &record)) {
+ time_t last_boot_time_utc = record.second;
+ time_t time_since_last_boot = difftime(current_time_utc,
+ last_boot_time_utc);
+ boot_event_store.AddBootEventWithValue("time_since_last_boot",
+ time_since_last_boot);
+ }
+
+ boot_event_store.AddBootEventWithValue("last_boot_time_utc", current_time_utc);
// The boot_complete metric has two variants: boot_complete and
// ota_boot_complete. The latter signifies that the device is booting after