| /* |
| * 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 android.server.wm; |
| |
| import android.content.ComponentName; |
| import android.content.ServiceConnection; |
| import android.os.IBinder; |
| import android.os.IInterface; |
| import android.util.Log; |
| |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.TimeUnit; |
| import java.util.function.Function; |
| |
| import javax.annotation.Nullable; |
| |
| public class FutureConnection<T extends IInterface> implements ServiceConnection { |
| private static final String TAG = "FutureServiceConnection"; |
| |
| private final Function<IBinder, T> mConverter; |
| private volatile CompletableFuture<IBinder> mFuture = new CompletableFuture<>(); |
| |
| public FutureConnection(Function<IBinder, T> converter) { |
| mConverter = converter; |
| } |
| |
| public T get(long timeoutMs) throws Exception { |
| return mConverter.apply(mFuture.get(timeoutMs, TimeUnit.MILLISECONDS)); |
| } |
| |
| @Nullable |
| public T getCurrent() { |
| return mConverter.apply(mFuture.getNow(null)); |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName name, IBinder service) { |
| mFuture.complete(service); |
| } |
| |
| @Override |
| public void onServiceDisconnected(ComponentName name) { |
| Log.w(TAG, name.flattenToShortString() + " disconnected"); |
| mFuture = new CompletableFuture<>(); |
| } |
| } |