Throttling framework addins

Add ThrottleManager in getSystemService
Add API for URL fetch

Bug: 2576057
Change-Id: Icd25c8b91ea4beea15c74e8ad7292ab48c962253

core/java/android/app/ContextImpl.java

@@ -67,6 +67,8 @@ import android.location.LocationManager;
 import android.media.AudioManager;
 import android.net.ConnectivityManager;
 import android.net.IConnectivityManager;
+import android.net.ThrottleManager;
+import android.net.IThrottleManager;
 import android.net.Uri;
 import android.net.wifi.IWifiManager;
 import android.net.wifi.WifiManager;
@@ -164,6 +166,7 @@ class ContextImpl extends Context {
     private static AlarmManager sAlarmManager;
     private static PowerManager sPowerManager;
     private static ConnectivityManager sConnectivityManager;
+    private static ThrottleManager sThrottleManager;
     private static WifiManager sWifiManager;
     private static LocationManager sLocationManager;
     private static final HashMap<File, SharedPreferencesImpl> sSharedPrefs =
@@ -929,6 +932,8 @@ class ContextImpl extends Context {
             return getPowerManager();
         } else if (CONNECTIVITY_SERVICE.equals(name)) {
             return getConnectivityManager();
+        } else if (THROTTLE_SERVICE.equals(name)) {
+            return getThrottleManager();
         } else if (WIFI_SERVICE.equals(name)) {
             return getWifiManager();
         } else if (NOTIFICATION_SERVICE.equals(name)) {
@@ -1028,6 +1033,18 @@ class ContextImpl extends Context {
         return sConnectivityManager;
     }
 
+    private ThrottleManager getThrottleManager()
+    {
+        synchronized (sSync) {
+            if (sThrottleManager == null) {
+                IBinder b = ServiceManager.getService(THROTTLE_SERVICE);
+                IThrottleManager service = IThrottleManager.Stub.asInterface(b);
+                sThrottleManager = new ThrottleManager(service);
+            }
+        }
+        return sThrottleManager;
+    }
+
     private WifiManager getWifiManager()
     {
         synchronized (sSync) {

core/java/android/net/IThrottleManager.aidl

@@ -35,4 +35,6 @@ interface IThrottleManager
     long getCliffThreshold(String iface, int cliff);
 
     int getCliffLevel(String iface, int cliff);
+
+    String getHelpUri();
 }

core/java/android/net/ThrottleManager.java

@@ -171,6 +171,19 @@ public class ThrottleManager
         }
     }
 
+    /**
+     * returns the help URI for throttling
+     * {@hide}
+     */
+    public String getHelpUri() {
+        try {
+            return mService.getHelpUri();
+        } catch (RemoteException e) {
+            return null;
+        }
+    }
+
+
     private IThrottleManager mService;
 
     /**

core/java/android/provider/Settings.java

@@ -3332,6 +3332,13 @@ public final class Settings {
          */
         public static final String THROTTLE_IFACE = "throttle_iface";
 
+        /**
+         * Help URI for data throttling policy
+         * @hide
+         */
+        public static final String THROTTLE_HELP_URI = "throttle_help_uri";
+
+
         /**
          * @hide
          */

services/java/com/android/server/ThrottleService.java

@@ -157,6 +157,12 @@ public class ThrottleService extends IThrottleManager.Stub {
         return 0;
     }
 
+    public String getHelpUri() {
+        enforceAccessPermission();
+        return Settings.Secure.getString(mContext.getContentResolver(),
+                    Settings.Secure.THROTTLE_HELP_URI);
+    }
+
     public synchronized long getByteCount(String iface, int dir, int period, int ago) {
         enforceAccessPermission();
         if (iface.equals(mPolicyIface) &&