| /* |
| * Copyright (C) 2022 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 android.app.sdksandbox; |
| |
| import android.annotation.NonNull; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.util.Objects; |
| |
| /** |
| * Singleton for a privacy sandbox, which is initialised when the sandbox is created. |
| * |
| * @hide |
| */ |
| public class SdkSandboxLocalSingleton { |
| |
| private static final String TAG = "SandboxLocalSingleton"; |
| private static SdkSandboxLocalSingleton sInstance = null; |
| private final ISdkToServiceCallback mSdkToServiceCallback; |
| |
| private SdkSandboxLocalSingleton(ISdkToServiceCallback sdkToServiceCallback) { |
| mSdkToServiceCallback = sdkToServiceCallback; |
| } |
| |
| /** |
| * Returns a singleton instance of this class. TODO(b/247313241): Fix parameter once aidl issues |
| * are fixed. |
| * |
| * @param sdkToServiceBinder callback to support communication with the {@link |
| * com.android.server.sdksandbox.SdkSandboxManagerService} |
| * @throws IllegalStateException if singleton is already initialised |
| * @throws UnsupportedOperationException if the interface passed is not of type {@link |
| * ISdkToServiceCallback} |
| */ |
| public static synchronized void initInstance(@NonNull IBinder sdkToServiceBinder) { |
| if (sInstance != null) { |
| Log.d(TAG, "Already Initialised"); |
| return; |
| } |
| try { |
| if (Objects.nonNull(sdkToServiceBinder) |
| && sdkToServiceBinder |
| .getInterfaceDescriptor() |
| .equals(ISdkToServiceCallback.DESCRIPTOR)) { |
| sInstance = |
| new SdkSandboxLocalSingleton( |
| ISdkToServiceCallback.Stub.asInterface(sdkToServiceBinder)); |
| return; |
| } |
| } catch (RemoteException e) { |
| // Fall through to the failure case. |
| } |
| throw new UnsupportedOperationException("IBinder not supported"); |
| } |
| |
| /** Returns an already initialised singleton instance of this class. */ |
| public static SdkSandboxLocalSingleton getExistingInstance() { |
| if (sInstance == null) { |
| throw new IllegalStateException("SdkSandboxLocalSingleton not found"); |
| } |
| return sInstance; |
| } |
| |
| /** To reset the singleton. Only for Testing. */ |
| @VisibleForTesting(visibility = VisibleForTesting.Visibility.PRIVATE) |
| public static void destroySingleton() { |
| sInstance = null; |
| } |
| |
| /** Gets the callback to the {@link com.android.server.sdksandbox.SdkSandboxManagerService} */ |
| public ISdkToServiceCallback getSdkToServiceCallback() { |
| return mSdkToServiceCallback; |
| } |
| } |