Fix battery controller non-fire bug

Receiver wasn't registered to listen for the action coming
back from the Alarm Manager.
Also, if a task starts being tracked by the battery controller
and the device is on power, the batt. controller will notify
the scheduler as such.
Added dumpsys for battery controller to help debugging.
Change-Id: I7ce305b816aea69e8d05a3daf23124c163546788

services/core/java/com/android/server/job/controllers/BatteryController.java

@@ -37,6 +37,7 @@ import com.android.server.job.StateChangedListener;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
 
 /**
@@ -45,7 +46,7 @@ import java.util.List;
  * ACTION_BATTERY_OK.
  */
 public class BatteryController extends StateController {
-    private static final String TAG = "BatteryController";
+    private static final String TAG = "JobScheduler.Batt";
 
     private static final Object sCreationLock = new Object();
     private static volatile BatteryController sController;
@@ -87,12 +88,15 @@ public class BatteryController extends StateController {
     @Override
     public void maybeStartTrackingJob(JobStatus taskStatus) {
         if (taskStatus.hasChargingConstraint()) {
+            final boolean isOnStablePower = mChargeTracker.isOnStablePower();
             synchronized (mTrackedTasks) {
                 mTrackedTasks.add(taskStatus);
-                taskStatus.chargingConstraintSatisfied.set(mChargeTracker.isOnStablePower());
+                taskStatus.chargingConstraintSatisfied.set(isOnStablePower);
+            }
+            if (isOnStablePower) {
+                mStateChangedListener.onControllerStateChanged();
             }
         }
-
     }
 
     @Override
@@ -106,6 +110,9 @@ public class BatteryController extends StateController {
 
     private void maybeReportNewChargingState() {
         final boolean stablePower = mChargeTracker.isOnStablePower();
+        if (DEBUG) {
+            Slog.d(TAG, "maybeReportNewChargingState: " + stablePower);
+        }
         boolean reportChange = false;
         synchronized (mTrackedTasks) {
             for (JobStatus ts : mTrackedTasks) {
@@ -133,8 +140,7 @@ public class BatteryController extends StateController {
 
         public ChargingTracker() {
             mAlarm = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
-            Intent intent = new Intent(ACTION_CHARGING_STABLE)
-                    .setComponent(new ComponentName(mContext, this.getClass()));
+            Intent intent = new Intent(ACTION_CHARGING_STABLE);
             mStableChargingTriggerIntent = PendingIntent.getBroadcast(mContext, 0, intent, 0);
         }
 
@@ -147,6 +153,8 @@ public class BatteryController extends StateController {
             // Charging/not charging.
             filter.addAction(Intent.ACTION_POWER_CONNECTED);
             filter.addAction(Intent.ACTION_POWER_DISCONNECTED);
+            // Charging stable.
+            filter.addAction(ACTION_CHARGING_STABLE);
             mContext.registerReceiver(this, filter);
 
             // Initialise tracker state.
@@ -189,6 +197,10 @@ public class BatteryController extends StateController {
                 mBatteryHealthy = true;
                 maybeReportNewChargingState();
             } else if (Intent.ACTION_POWER_CONNECTED.equals(action)) {
+                if (DEBUG) {
+                    Slog.d(TAG, "Received charging intent, setting alarm for "
+                            + STABLE_CHARGING_THRESHOLD_MILLIS);
+                }
                 // Set up an alarm for ACTION_CHARGING_STABLE - we don't want to kick off tasks
                 // here if the user unplugs the phone immediately.
                 mAlarm.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
@@ -196,6 +208,9 @@ public class BatteryController extends StateController {
                         mStableChargingTriggerIntent);
                 mCharging = true;
             } else if (Intent.ACTION_POWER_DISCONNECTED.equals(action)) {
+                if (DEBUG) {
+                    Slog.d(TAG, "Disconnected from power, cancelling any set alarms.");
+                }
                 // If an alarm is set, breathe a sigh of relief and cancel it - crisis averted.
                 mAlarm.cancel(mStableChargingTriggerIntent);
                 mCharging = false;
@@ -203,7 +218,8 @@ public class BatteryController extends StateController {
             }else if (ACTION_CHARGING_STABLE.equals(action)) {
                 // Here's where we actually do the notify for a task being ready.
                 if (DEBUG) {
-                    Slog.d(TAG, "Battery connected fired @ " + SystemClock.elapsedRealtime());
+                    Slog.d(TAG, "Battery connected fired @ " + SystemClock.elapsedRealtime()
+                            + " charging: " + mCharging);
                 }
                 if (mCharging) {  // Should never receive this intent if mCharging is false.
                     maybeReportNewChargingState();
@@ -214,6 +230,17 @@ public class BatteryController extends StateController {
 
     @Override
     public void dumpControllerState(PrintWriter pw) {
-
+        pw.println("Batt.");
+        pw.println("Stable power: " + mChargeTracker.isOnStablePower());
+        synchronized (mTrackedTasks) {
+            Iterator<JobStatus> it = mTrackedTasks.iterator();
+            if (it.hasNext()) {
+                pw.print(String.valueOf(it.next().hashCode()));
+            }
+            while (it.hasNext()) {
+                pw.print("," + String.valueOf(it.next().hashCode()));
+            }
+            pw.println();
+        }
     }
 }