Disable a wakeup alarm in car.

- Car in power off or suspend state should not wake up from alarm.

Test: run added unit test.
Bug: 123430582
Change-Id: I5cdf93fc816cd3e8a5d2a6d93616ff6040840613

2 files changed, 76 insertions, 2 deletions

diff --git a/services/core/java/com/android/server/AlarmManagerService.java b/services/core/java/com/android/server/AlarmManagerService.java
index 0f39029f47b9..47c85683b4e6 100644
--- a/services/core/java/com/android/server/AlarmManagerService.java
+++ b/services/core/java/com/android/server/AlarmManagerService.java
@@ -1697,6 +1697,8 @@ class AlarmManagerService extends SystemService {
             return;
         }
 
+        type = fixTypeIfAuto(type);
+
         // Sanity check the window length.  This will catch people mistakenly
         // trying to pass an end-of-window timestamp rather than a duration.
         if (windowLength > AlarmManager.INTERVAL_HALF_DAY) {
@@ -1812,6 +1814,21 @@ class AlarmManagerService extends SystemService {
     }
 
     /**
+     * In case of cars, we need to avoid scheduling wakeup alarms, since we don't want the system
+     * to wake up from suspend arbitrarily to perform app work.
+     */
+    private int fixTypeIfAuto(int type) {
+        if (mInjector.isAutomotive()) {
+            if (type == AlarmManager.ELAPSED_REALTIME_WAKEUP) {
+                type = AlarmManager.ELAPSED_REALTIME;
+            } else if (type == AlarmManager.RTC_WAKEUP) {
+                type = AlarmManager.RTC;
+            }
+        }
+        return type;
+    }
+
+    /**
      * Return the minimum time that should elapse before an app in the specified bucket
      * can receive alarms again
      */
@@ -2214,6 +2231,7 @@ class AlarmManagerService extends SystemService {
             pw.print("  mLastTickSet="); pw.println(sdf.format(new Date(mLastTickSet)));
             pw.print("  mLastTickAdded="); pw.println(sdf.format(new Date(mLastTickAdded)));
             pw.print("  mLastTickRemoved="); pw.println(sdf.format(new Date(mLastTickRemoved)));
+            pw.print("  mIsAutomotive="); pw.println(mInjector.isAutomotive());
 
             if (RECORD_ALARMS_IN_HISTORY) {
                 pw.println();
@@ -3838,9 +3856,12 @@ class AlarmManagerService extends SystemService {
     static class Injector {
         private long mNativeData;
         private Context mContext;
+        private final boolean mIsAutomotive;
 
         Injector(Context context) {
             mContext = context;
+            mIsAutomotive = context.getPackageManager().hasSystemFeature(
+                PackageManager.FEATURE_AUTOMOTIVE);
         }
 
         void init() {
@@ -3929,6 +3950,10 @@ class AlarmManagerService extends SystemService {
         ClockReceiver getClockReceiver(AlarmManagerService service) {
             return service.new ClockReceiver();
         }
+
+        boolean isAutomotive() {
+            return mIsAutomotive;
+        }
     }
 
     private class AlarmThread extends Thread
diff --git a/services/tests/mockingservicestests/src/com/android/server/AlarmManagerServiceTest.java b/services/tests/mockingservicestests/src/com/android/server/AlarmManagerServiceTest.java
index 7a40e449aaec..7a68e92cff6d 100644
--- a/services/tests/mockingservicestests/src/com/android/server/AlarmManagerServiceTest.java
+++ b/services/tests/mockingservicestests/src/com/android/server/AlarmManagerServiceTest.java
@@ -66,6 +66,7 @@ import android.app.usage.UsageStatsManagerInternal;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
@@ -118,6 +119,8 @@ public class AlarmManagerServiceTest {
     private AlarmManagerService.ClockReceiver mClockReceiver;
     @Mock
     private PowerManager.WakeLock mWakeLock;
+    @Mock
+    private PackageManager mMockPackageManager;
 
     private MockitoSession mMockingSession;
     private Injector mInjector;
@@ -128,15 +131,21 @@ public class AlarmManagerServiceTest {
     static class TestTimer {
         private long mElapsed;
         boolean mExpired;
+        int mType;
 
         synchronized long getElapsed() {
             return mElapsed;
         }
 
-        synchronized void set(long millisElapsed) {
+        synchronized void set(int type, long millisElapsed) {
+            mType = type;
             mElapsed = millisElapsed;
         }
 
+        synchronized int getType() {
+            return mType;
+        }
+
         synchronized void expire() throws InterruptedException {
             mExpired = true;
             notifyAll();
@@ -146,6 +155,8 @@ public class AlarmManagerServiceTest {
     }
 
     public class Injector extends AlarmManagerService.Injector {
+        boolean mIsAutomotiveOverride;
+
         Injector(Context context) {
             super(context);
         }
@@ -179,7 +190,7 @@ public class AlarmManagerServiceTest {
 
         @Override
         void setAlarm(int type, long millis) {
-            mTestTimer.set(millis);
+            mTestTimer.set(type, millis);
         }
 
         @Override
@@ -211,6 +222,11 @@ public class AlarmManagerServiceTest {
         PowerManager.WakeLock getAlarmWakeLock() {
             return mWakeLock;
         }
+
+        @Override
+        boolean isAutomotive() {
+            return mIsAutomotiveOverride;
+        }
     }
 
     @Before
@@ -237,6 +253,8 @@ public class AlarmManagerServiceTest {
         when(mMockContext.getContentResolver()).thenReturn(mMockResolver);
         doReturn("min_futurity=0,min_interval=0").when(() ->
                 Settings.Global.getString(mMockResolver, Settings.Global.ALARM_MANAGER_CONSTANTS));
+        when(mMockContext.getPackageManager()).thenReturn(mMockPackageManager);
+
         mInjector = new Injector(mMockContext);
         mService = new AlarmManagerService(mMockContext, mInjector);
         spyOn(mService);
@@ -933,6 +951,37 @@ public class AlarmManagerServiceTest {
     }
 
     @Test
+    public void alarmTypes() throws Exception {
+        final int[] typesToSet = {ELAPSED_REALTIME_WAKEUP, ELAPSED_REALTIME, RTC_WAKEUP, RTC};
+        final int[] typesExpected = {ELAPSED_REALTIME_WAKEUP, ELAPSED_REALTIME,
+                ELAPSED_REALTIME_WAKEUP, ELAPSED_REALTIME};
+        assertAlarmTypeConversion(typesToSet, typesExpected);
+    }
+
+    /**
+     * Confirm that wakeup alarms are never set for automotive.
+     */
+    @Test
+    public void alarmTypesForAuto() throws Exception {
+        mInjector.mIsAutomotiveOverride = true;
+        final int[] typesToSet = {ELAPSED_REALTIME_WAKEUP, ELAPSED_REALTIME, RTC_WAKEUP, RTC};
+        final int[] typesExpected = {ELAPSED_REALTIME, ELAPSED_REALTIME, ELAPSED_REALTIME,
+                ELAPSED_REALTIME};
+        assertAlarmTypeConversion(typesToSet, typesExpected);
+    }
+
+    private void assertAlarmTypeConversion(int[] typesToSet, int[] typesExpected) throws Exception {
+        for (int i = 0; i < typesToSet.length; i++) {
+            setTestAlarm(typesToSet[i], 1234, getNewMockPendingIntent());
+            final int typeSet = mTestTimer.getType();
+            assertEquals("Alarm of type " + typesToSet[i] + " was set to type " + typeSet,
+                    typesExpected[i], typeSet);
+            mNowElapsedTest = mTestTimer.getElapsed();
+            mTestTimer.expire();
+        }
+    }
+
+    @Test
     public void alarmCountOnInvalidSet() {
         setTestAlarm(ELAPSED_REALTIME, mNowElapsedTest + 12345, null);
         assertEquals(-1, mService.mAlarmsPerUid.get(TEST_CALLING_UID, -1));