update_engine: Support DLC Cohorts
UE at the moment doesn't send the correct cohorts to Omaha for DLCs. In
fact, the platform cohorts that are persisted are used for all DLCs.
This is incorrect and this CL fixes it.
```
Example DLC Response:
... cohort="1:7:" cohortname="eve_dlc_pita_canary"...
localhost ~ # ls /var/lib/update_engine/prefs/dlc/pita/omaha-cohort*
/var/lib/update_engine/prefs/dlc/pita/omaha-cohort
/var/lib/update_engine/prefs/dlc/pita/omaha-cohort-name
localhost ~ # cat /var/lib/update_engine/prefs/dlc/pita/omaha-cohort
1:7:
localhost ~ # cat
/var/lib/update_engine/prefs/dlc/pita/omaha-cohort-name
eve_dlc_pita_canary
```
BUG=b:162463872
TEST=FEATURES=test emerge-$B update_engine
TEST=# cros deploy + comment above
Change-Id: Ie503f0a63d3b19a51abb88379cb2e8f85919858b
Reviewed-on: https://chromium-review.googlesource.com/c/aosp/platform/system/update_engine/+/2515072
Tested-by: Jae Hoon Kim <kimjae@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>
Commit-Queue: Jae Hoon Kim <kimjae@chromium.org>
diff --git a/cros/omaha_request_params.cc b/cros/omaha_request_params.cc
index c814e00..e7e719b 100644
--- a/cros/omaha_request_params.cc
+++ b/cros/omaha_request_params.cc
@@ -274,6 +274,14 @@
return dlc_apps_params().find(app_id) != dlc_apps_params().end();
}
+bool OmahaRequestParams::GetDlcId(const string& app_id, string* dlc_id) const {
+ auto itr = dlc_apps_params_.find(app_id);
+ if (itr == dlc_apps_params_.end())
+ return false;
+ *dlc_id = itr->second.name;
+ return true;
+}
+
void OmahaRequestParams::SetDlcNoUpdate(const string& app_id) {
auto itr = dlc_apps_params_.find(app_id);
if (itr == dlc_apps_params_.end())