Merge "Add NetworkProvider to VcnManagementService" am: bdcdfa7c9c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1486652

Change-Id: I5d11e5238cecb2ecd2383e9ff6e78ade9eb77731

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

@@ -20,10 +20,18 @@ import static java.util.Objects.requireNonNull;
 
 import android.annotation.NonNull;
 import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkProvider;
+import android.net.NetworkRequest;
 import android.net.vcn.IVcnManagementService;
 import android.net.vcn.VcnConfig;
+import android.os.HandlerThread;
+import android.os.Looper;
 import android.os.ParcelUuid;
 
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.annotations.VisibleForTesting.Visibility;
+
 /**
  * VcnManagementService manages Virtual Carrier Network profiles and lifecycles.
  *
@@ -88,9 +96,16 @@ public class VcnManagementService extends IVcnManagementService.Stub {
     @NonNull private final Context mContext;
     @NonNull private final Dependencies mDeps;
 
-    private VcnManagementService(@NonNull Context context, @NonNull Dependencies deps) {
+    @NonNull private final Looper mLooper;
+    @NonNull private final VcnNetworkProvider mNetworkProvider;
+
+    @VisibleForTesting(visibility = Visibility.PRIVATE)
+    VcnManagementService(@NonNull Context context, @NonNull Dependencies deps) {
         mContext = requireNonNull(context, "Missing context");
         mDeps = requireNonNull(deps, "Missing dependencies");
+
+        mLooper = mDeps.getLooper();
+        mNetworkProvider = new VcnNetworkProvider(mContext, mLooper);
     }
 
     // Package-visibility for SystemServer to create instances.
@@ -98,11 +113,31 @@ public class VcnManagementService extends IVcnManagementService.Stub {
         return new VcnManagementService(context, new Dependencies());
     }
 
-    private static class Dependencies {}
+    /** External dependencies used by VcnManagementService, for injection in tests */
+    @VisibleForTesting(visibility = Visibility.PRIVATE)
+    public static class Dependencies {
+        private HandlerThread mHandlerThread;
+
+        /** Retrieves a looper for the VcnManagementService */
+        public Looper getLooper() {
+            if (mHandlerThread == null) {
+                synchronized (this) {
+                    if (mHandlerThread == null) {
+                        mHandlerThread = new HandlerThread(TAG);
+                        mHandlerThread.start();
+                    }
+                }
+            }
+            return mHandlerThread.getLooper();
+        }
+    }
 
     /** Notifies the VcnManagementService that external dependencies can be set up. */
     public void systemReady() {
         // TODO: Retrieve existing profiles from KeyStore
+
+        mContext.getSystemService(ConnectivityManager.class)
+                .registerNetworkProvider(mNetworkProvider);
     }
 
     /**
@@ -129,4 +164,16 @@ public class VcnManagementService extends IVcnManagementService.Stub {
 
         // TODO: Clear VCN configuration, trigger teardown as necessary
     }
+
+    @VisibleForTesting(visibility = Visibility.PRIVATE)
+    class VcnNetworkProvider extends NetworkProvider {
+        VcnNetworkProvider(@NonNull Context context, @NonNull Looper looper) {
+            super(context, looper, VcnNetworkProvider.class.getSimpleName());
+        }
+
+        @Override
+        public void onNetworkRequested(@NonNull NetworkRequest request, int score, int providerId) {
+            // TODO: Handle network requests - Ensure VCN started, and start appropriate tunnels.
+        }
+    }
 }

tests/vcn/java/com/android/server/VcnManagementServiceTest.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2020 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;
+
+import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.os.test.TestLooper;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Tests for {@link VcnManagementService}. */
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class VcnManagementServiceTest {
+    private final Context mMockContext = mock(Context.class);
+    private final VcnManagementService.Dependencies mMockDeps =
+            mock(VcnManagementService.Dependencies.class);
+    private final TestLooper mTestLooper = new TestLooper();
+    private final ConnectivityManager mConnMgr = mock(ConnectivityManager.class);
+    private final VcnManagementService mVcnMgmtSvc;
+
+    public VcnManagementServiceTest() {
+        doReturn(Context.CONNECTIVITY_SERVICE)
+                .when(mMockContext)
+                .getSystemServiceName(ConnectivityManager.class);
+        doReturn(mConnMgr).when(mMockContext).getSystemService(Context.CONNECTIVITY_SERVICE);
+
+        doReturn(mTestLooper.getLooper()).when(mMockDeps).getLooper();
+        mVcnMgmtSvc = new VcnManagementService(mMockContext, mMockDeps);
+    }
+
+    @Test
+    public void testSystemReady() throws Exception {
+        mVcnMgmtSvc.systemReady();
+
+        verify(mConnMgr)
+                .registerNetworkProvider(any(VcnManagementService.VcnNetworkProvider.class));
+    }
+}