Merge "CountryDetector: Enable detector class override for automotive" into qt-qpr1-dev am: 6ac8c0d096

Change-Id: I6fedf6dd00d79b9aeb7b48b91535fe44a936673b

core/res/res/values/config.xml

@@ -4349,7 +4349,11 @@
     <!-- Boolean indicating whether frameworks needs to reset cell broadcast geo-fencing
          check after reboot or airplane mode toggling -->
     <bool translatable="false" name="reset_geo_fencing_check_after_boot_or_apm">false</bool>
+
     <!-- Boolean indicating that the system will use autoSuspend. If set to false, autoSuspend
          is not used and the system will only suspend upon an explicit request. -->
     <bool translatable="false" name="config_enableAutoSuspend">true</bool>
+
+    <!-- Class name of the custom country detector to be used. -->
+    <string name="config_customCountryDetector" translatable="false">com.android.server.location.ComprehensiveCountryDetector</string>
 </resources>

core/res/res/values/symbols.xml

@@ -3697,6 +3697,8 @@
 
   <java-symbol type="bool" name="config_maskMainBuiltInDisplayCutout" />
 
+  <java-symbol type="string" name="config_customCountryDetector" />
+
   <!-- For Foldables -->
   <java-symbol type="bool" name="config_lidControlsDisplayFold" />
   <java-symbol type="string" name="config_foldedArea" />

services/core/java/com/android/server/CountryDetectorService.java

@@ -24,21 +24,29 @@ import android.location.ICountryListener;
 import android.os.Handler;
 import android.os.IBinder;
 import android.os.RemoteException;
+import android.text.TextUtils;
 import android.util.PrintWriterPrinter;
 import android.util.Printer;
 import android.util.Slog;
 
+import com.android.internal.R;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.os.BackgroundThread;
 import com.android.internal.util.DumpUtils;
 import com.android.server.location.ComprehensiveCountryDetector;
+import com.android.server.location.CountryDetectorBase;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
+import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
 
 /**
- * This class detects the country that the user is in through {@link ComprehensiveCountryDetector}.
+ * This class detects the country that the user is in. The default country detection is made through
+ * {@link com.android.server.location.ComprehensiveCountryDetector}. It is possible to overlay the
+ * detection algorithm by overlaying the attribute R.string.config_customCountryDetector with the
+ * custom class name to use instead. The custom class must extend
+ * {@link com.android.server.location.CountryDetectorBase}
  *
  * @hide
  */
@@ -88,7 +96,7 @@ public class CountryDetectorService extends ICountryDetector.Stub {
 
     private final HashMap<IBinder, Receiver> mReceivers;
     private final Context mContext;
-    private ComprehensiveCountryDetector mCountryDetector;
+    private CountryDetectorBase mCountryDetector;
     private boolean mSystemReady;
     private Handler mHandler;
     private CountryListener mLocationBasedDetectorListener;
@@ -184,8 +192,17 @@ public class CountryDetectorService extends ICountryDetector.Stub {
                 });
     }
 
-    private void initialize() {
-        mCountryDetector = new ComprehensiveCountryDetector(mContext);
+    @VisibleForTesting
+    void initialize() {
+        final String customCountryClass = mContext.getString(R.string.config_customCountryDetector);
+        if (!TextUtils.isEmpty(customCountryClass)) {
+            mCountryDetector = loadCustomCountryDetectorIfAvailable(customCountryClass);
+        }
+
+        if (mCountryDetector == null) {
+            Slog.d(TAG, "Using default country detector");
+            mCountryDetector = new ComprehensiveCountryDetector(mContext);
+        }
         mLocationBasedDetectorListener = country -> mHandler.post(() -> notifyReceivers(country));
     }
 
@@ -193,11 +210,33 @@ public class CountryDetectorService extends ICountryDetector.Stub {
         mHandler.post(() -> mCountryDetector.setCountryListener(listener));
     }
 
+    @VisibleForTesting
+    CountryDetectorBase getCountryDetector() {
+        return mCountryDetector;
+    }
+
     @VisibleForTesting
     boolean isSystemReady() {
         return mSystemReady;
     }
 
+    private CountryDetectorBase loadCustomCountryDetectorIfAvailable(
+            final String customCountryClass) {
+        CountryDetectorBase customCountryDetector = null;
+
+        Slog.d(TAG, "Using custom country detector class: " + customCountryClass);
+        try {
+            customCountryDetector = Class.forName(customCountryClass).asSubclass(
+                    CountryDetectorBase.class).getConstructor(Context.class).newInstance(
+                    mContext);
+        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException
+                | NoSuchMethodException | InvocationTargetException e) {
+            Slog.e(TAG, "Could not instantiate the custom country detector class");
+        }
+
+        return customCountryDetector;
+    }
+
     @SuppressWarnings("unused")
     @Override
     protected void dump(FileDescriptor fd, PrintWriter fout, String[] args) {
@@ -206,9 +245,10 @@ public class CountryDetectorService extends ICountryDetector.Stub {
         try {
             final Printer p = new PrintWriterPrinter(fout);
             p.println("CountryDetectorService state:");
+            p.println("Country detector class=" + mCountryDetector.getClass().getName());
             p.println("  Number of listeners=" + mReceivers.keySet().size());
             if (mCountryDetector == null) {
-                p.println("  ComprehensiveCountryDetector not initialized");
+                p.println("  CountryDetector not initialized");
             } else {
                 p.println("  " + mCountryDetector.toString());
             }

services/tests/servicestests/src/com/android/server/CountryDetectorServiceTest.java

@@ -19,8 +19,11 @@ package com.android.server;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.ArgumentMatchers.anyLong;
 import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.when;
 
 import android.content.Context;
+import android.content.res.Resources;
 import android.location.Country;
 import android.location.CountryListener;
 import android.location.ICountryListener;
@@ -31,6 +34,10 @@ import android.os.RemoteException;
 
 import androidx.test.core.app.ApplicationProvider;
 
+import com.android.internal.R;
+import com.android.server.location.ComprehensiveCountryDetector;
+import com.android.server.location.CustomCountryDetectorTestClass;
+
 import com.google.common.truth.Expect;
 
 import org.junit.Before;
@@ -38,12 +45,18 @@ import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.Mock;
 import org.mockito.Spy;
 import org.mockito.junit.MockitoJUnitRunner;
 
 @RunWith(MockitoJUnitRunner.class)
 public class CountryDetectorServiceTest {
 
+    private static final String VALID_CUSTOM_TEST_CLASS =
+            "com.android.server.location.CustomCountryDetectorTestClass";
+    private static final String INVALID_CUSTOM_TEST_CLASS =
+            "com.android.server.location.MissingCountryDetectorTestClass";
+
     private static class CountryListenerTester extends ICountryListener.Stub {
         private Country mCountry;
 
@@ -83,12 +96,11 @@ public class CountryDetectorServiceTest {
         }
     }
 
-    @Rule
-    public final Expect expect = Expect.create();
-    @Spy
-    private Context mContext = ApplicationProvider.getApplicationContext();
-    @Spy
-    private Handler mHandler = new Handler(Looper.myLooper());
+    @Rule public final Expect expect = Expect.create();
+    @Spy private Context mContext = ApplicationProvider.getApplicationContext();
+    @Spy private Handler mHandler = new Handler(Looper.myLooper());
+    @Mock private Resources mResources;
+
     private CountryDetectorServiceTester mCountryDetectorService;
 
     @BeforeClass
@@ -108,10 +120,12 @@ public class CountryDetectorServiceTest {
             message.getCallback().run();
             return true;
         }).when(mHandler).sendMessageAtTime(any(Message.class), anyLong());
+
+        doReturn(mResources).when(mContext).getResources();
     }
 
     @Test
-    public void countryListener_add_successful() throws RemoteException {
+    public void addCountryListener_validListener_listenerAdded() throws RemoteException {
         CountryListenerTester countryListener = new CountryListenerTester();
 
         mCountryDetectorService.systemRunning();
@@ -122,7 +136,7 @@ public class CountryDetectorServiceTest {
     }
 
     @Test
-    public void countryListener_remove_successful() throws RemoteException {
+    public void removeCountryListener_validListener_listenerRemoved() throws RemoteException {
         CountryListenerTester countryListener = new CountryListenerTester();
 
         mCountryDetectorService.systemRunning();
@@ -133,8 +147,31 @@ public class CountryDetectorServiceTest {
         expect.that(mCountryDetectorService.isListenerSet()).isFalse();
     }
 
+    @Test(expected = RemoteException.class)
+    public void addCountryListener_serviceNotReady_throwsException() throws RemoteException {
+        CountryListenerTester countryListener = new CountryListenerTester();
+
+        expect.that(mCountryDetectorService.isSystemReady()).isFalse();
+        mCountryDetectorService.addCountryListener(countryListener);
+    }
+
+    @Test(expected = RemoteException.class)
+    public void removeCountryListener_serviceNotReady_throwsException() throws RemoteException {
+        CountryListenerTester countryListener = new CountryListenerTester();
+
+        expect.that(mCountryDetectorService.isSystemReady()).isFalse();
+        mCountryDetectorService.removeCountryListener(countryListener);
+    }
+
     @Test
-    public void countryListener_notify_successful() throws RemoteException {
+    public void detectCountry_serviceNotReady_returnNull() {
+        expect.that(mCountryDetectorService.isSystemReady()).isFalse();
+
+        expect.that(mCountryDetectorService.detectCountry()).isNull();
+    }
+
+    @Test
+    public void notifyReceivers_twoListenersRegistered_bothNotified() throws RemoteException {
         CountryListenerTester countryListenerA = new CountryListenerTester();
         CountryListenerTester countryListenerB = new CountryListenerTester();
         Country country = new Country("US", Country.COUNTRY_SOURCE_NETWORK);
@@ -151,4 +188,26 @@ public class CountryDetectorServiceTest {
         expect.that(countryListenerA.getCountry().equalsIgnoreSource(country)).isTrue();
         expect.that(countryListenerB.getCountry().equalsIgnoreSource(country)).isTrue();
     }
+
+    @Test
+    public void initialize_deviceWithCustomDetector_useCustomDetectorClass() {
+        when(mResources.getString(R.string.config_customCountryDetector))
+                .thenReturn(VALID_CUSTOM_TEST_CLASS);
+
+        mCountryDetectorService.initialize();
+
+        expect.that(mCountryDetectorService.getCountryDetector())
+                .isInstanceOf(CustomCountryDetectorTestClass.class);
+    }
+
+    @Test
+    public void initialize_deviceWithInvalidCustomDetector_useDefaultDetector() {
+        when(mResources.getString(R.string.config_customCountryDetector))
+                .thenReturn(INVALID_CUSTOM_TEST_CLASS);
+
+        mCountryDetectorService.initialize();
+
+        expect.that(mCountryDetectorService.getCountryDetector())
+                .isInstanceOf(ComprehensiveCountryDetector.class);
+    }
 }

services/tests/servicestests/src/com/android/server/location/CustomCountryDetectorTestClass.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.location;
+
+import android.content.Context;
+import android.location.Country;
+
+public class CustomCountryDetectorTestClass extends CountryDetectorBase {
+    public CustomCountryDetectorTestClass(Context ctx) {
+        super(ctx);
+    }
+
+    @Override
+    public Country detectCountry() {
+        return null;
+    }
+
+    @Override
+    public void stop() {
+
+    }
+}