am ab8f166e: am 09ab6495: Merge "[FileEncap18] Clean up uploading scheduling"

* commit 'ab8f166e6793e214dcb92454b10dbe5cc74daf9b':
  [FileEncap18] Clean up uploading scheduling

java/src/com/android/inputmethod/research/BootBroadcastReceiver.java

@@ -25,9 +25,10 @@ import android.content.Intent;
  */
 public final class BootBroadcastReceiver extends BroadcastReceiver {
     @Override
-    public void onReceive(Context context, Intent intent) {
+    public void onReceive(final Context context, final Intent intent) {
         if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
-            ResearchLogger.scheduleUploadingService(context);
+            UploaderService.cancelAndRescheduleUploadingService(context,
+                    true /* needsRescheduling */);
         }
     }
 }

java/src/com/android/inputmethod/research/ResearchLogger.java

@@ -20,16 +20,13 @@ import static com.android.inputmethod.latin.Constants.Subtype.ExtraValue.KEYBOAR
 
 import android.accounts.Account;
 import android.accounts.AccountManager;
-import android.app.AlarmManager;
 import android.app.AlertDialog;
 import android.app.Dialog;
-import android.app.PendingIntent;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnCancelListener;
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.content.SharedPreferences.Editor;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.res.Resources;
@@ -74,22 +71,16 @@ import com.android.inputmethod.latin.SuggestedWords;
 import com.android.inputmethod.latin.define.ProductionFlag;
 import com.android.inputmethod.research.MotionEventReader.ReplayData;
 
-import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.io.InputStreamReader;
 import java.nio.MappedByteBuffer;
 import java.nio.channels.FileChannel;
 import java.nio.charset.Charset;
-import java.text.SimpleDateFormat;
 import java.util.ArrayList;
-import java.util.Date;
 import java.util.List;
-import java.util.Locale;
 import java.util.Random;
-import java.util.UUID;
 
 /**
  * Logs the use of the LatinIME keyboard.
@@ -254,7 +245,8 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         mUploadNowIntent = new Intent(mLatinIME, UploaderService.class);
         mUploadNowIntent.putExtra(UploaderService.EXTRA_UPLOAD_UNCONDITIONALLY, true);
         if (ProductionFlag.USES_DEVELOPMENT_ONLY_DIAGNOSTICS) {
-            scheduleUploadingService(mLatinIME);
+            UploaderService.cancelAndRescheduleUploadingService(mLatinIME,
+                    true /* needsRescheduling */);
         }
         mReplayer.setKeyboardSwitcher(keyboardSwitcher);
     }
@@ -268,25 +260,6 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         ResearchSettings.writeResearchLastDirCleanupTime(mPrefs, now);
     }
 
-    /**
-     * Arrange for the UploaderService to be run on a regular basis.
-     *
-     * Any existing scheduled invocation of UploaderService is removed and rescheduled.  This may
-     * cause problems if this method is called often and frequent updates are required, but since
-     * the user will likely be sleeping at some point, if the interval is less that the expected
-     * sleep duration and this method is not called during that time, the service should be invoked
-     * at some point.
-     */
-    public static void scheduleUploadingService(Context context) {
-        final Intent intent = new Intent(context, UploaderService.class);
-        final PendingIntent pendingIntent = PendingIntent.getService(context, 0, intent, 0);
-        final AlarmManager manager =
-                (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
-        manager.cancel(pendingIntent);
-        manager.setInexactRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
-                UploaderService.RUN_INTERVAL, UploaderService.RUN_INTERVAL, pendingIntent);
-    }
-
     public void mainKeyboardView_onAttachedToWindow(final MainKeyboardView mainKeyboardView) {
         mMainKeyboardView = mainKeyboardView;
         maybeShowSplashScreen();

java/src/com/android/inputmethod/research/UploaderService.java

@@ -18,6 +18,8 @@ package com.android.inputmethod.research;
 
 import android.app.AlarmManager;
 import android.app.IntentService;
+import android.app.PendingIntent;
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 
@@ -43,11 +45,17 @@ public final class UploaderService extends IntentService {
 
     @Override
     protected void onHandleIntent(final Intent intent) {
+        // We may reach this point either because the alarm fired, or because the system explicitly
+        // requested that an Upload occur.  In the latter case, we want to cancel the alarm in case
+        // it's about to fire.
+        cancelAndRescheduleUploadingService(this, false /* needsRescheduling */);
+
         final Uploader uploader = new Uploader(this);
         if (!uploader.isPossibleToUpload()) return;
         if (isUploadingUnconditionally(intent.getExtras()) || uploader.isConvenientToUpload()) {
             uploader.doUpload();
         }
+        cancelAndRescheduleUploadingService(this, true /* needsRescheduling */);
     }
 
     private boolean isUploadingUnconditionally(final Bundle bundle) {
@@ -57,4 +65,42 @@ public final class UploaderService extends IntentService {
         }
         return false;
     }
+
+    /**
+     * Arrange for the UploaderService to be run on a regular basis.
+     *
+     * Any existing scheduled invocation of UploaderService is removed and optionally rescheduled.
+     * This may cause problems if this method is called so often that no scheduled invocation is
+     * ever run.  But if the delay is short enough that it will go off when the user is sleeping,
+     * then there should be no starvation.
+     *
+     * @param context {@link Context} object
+     * @param needsRescheduling whether to schedule a future intent to be delivered to this service
+     */
+    public static void cancelAndRescheduleUploadingService(final Context context,
+            final boolean needsRescheduling) {
+        final PendingIntent pendingIntent = getPendingIntentForService(context);
+        final AlarmManager alarmManager = (AlarmManager) context.getSystemService(
+                Context.ALARM_SERVICE);
+        cancelAnyScheduledServiceAlarm(alarmManager, pendingIntent);
+        if (needsRescheduling) {
+            scheduleServiceAlarm(alarmManager, pendingIntent);
+        }
+    }
+
+    private static PendingIntent getPendingIntentForService(final Context context) {
+        final Intent intent = new Intent(context, UploaderService.class);
+        return PendingIntent.getService(context, 0, intent, 0);
+    }
+
+    private static void cancelAnyScheduledServiceAlarm(final AlarmManager alarmManager,
+            final PendingIntent pendingIntent) {
+        alarmManager.cancel(pendingIntent);
+    }
+
+    private static void scheduleServiceAlarm(final AlarmManager alarmManager,
+            final PendingIntent pendingIntent) {
+        alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, UploaderService.RUN_INTERVAL,
+                pendingIntent);
+    }
 }