Statsd broadcast subscriber

Allows a uid that uploads a statsd config to additionally
register a BroadcastSubscriber with statsd. If statsd
detects an anomaly (according to the config's Alert),
statsd can inform a BroadcastSubscriber provided in the config.
The config uses a subscriberId (just an int) to identify the
BroadcastSubscriber. It then uses StatsManager.setBroadcastSubscriber
to associate that subscriberId with a given PendingIntent.
Then, when the anomaly is detected, statsd sends a broadcast
using that PendingIntent, alerting whoever was specified by
the config/setBroadcastSubscriber.

Bug: 70356901
Test: cts-tradefed run cts-dev -m CtsStatsdHostTestCases -t android.cts.statsd.alert.BroadcastSubscriberTests
Change-Id: I4d9ea9a6c8a85e61fadfd99c1513c55abbadd5e9
diff --git a/cmds/statsd/src/anomaly/AnomalyTracker.cpp b/cmds/statsd/src/anomaly/AnomalyTracker.cpp
index e34aed3..ded6c4c 100644
--- a/cmds/statsd/src/anomaly/AnomalyTracker.cpp
+++ b/cmds/statsd/src/anomaly/AnomalyTracker.cpp
@@ -21,6 +21,7 @@
 #include "external/Perfetto.h"
 #include "guardrail/StatsdStats.h"
 #include "frameworks/base/libs/incident/proto/android/os/header.pb.h"
+#include "subscriber/SubscriberReporter.h"
 
 #include <android/os/IIncidentManager.h>
 #include <android/os/IncidentReportArgs.h>
@@ -233,6 +234,7 @@
     }
 
     std::set<int> incidentdSections;
+
     for (const Subscription& subscription : mSubscriptions) {
         switch (subscription.subscriber_information_case()) {
             case Subscription::SubscriberInformationCase::kIncidentdDetails:
@@ -243,6 +245,10 @@
             case Subscription::SubscriberInformationCase::kPerfettoDetails:
                 CollectPerfettoTraceAndUploadToDropbox(subscription.perfetto_details());
                 break;
+            case Subscription::SubscriberInformationCase::kBroadcastSubscriberDetails:
+                SubscriberReporter::getInstance()
+                        .alertBroadcastSubscriber(mConfigKey, subscription, key);
+                break;
             default:
                 break;
         }