| /* |
| * Copyright (C) 2021 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.provider; |
| |
| import static android.provider.CloudMediaProviderContract.EXTRA_ERROR_MESSAGE; |
| import static android.provider.CloudMediaProviderContract.EXTRA_FILE_DESCRIPTOR; |
| |
| import android.annotation.NonNull; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.RemoteCallback; |
| import android.os.RemoteException; |
| |
| import java.io.FileNotFoundException; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * @hide |
| */ |
| public final class AsyncContentProvider { |
| |
| private static final long TIMEOUT_IN_SECONDS = 5L; |
| |
| private final IAsyncContentProvider mAsyncContentProvider; |
| |
| public AsyncContentProvider(@NonNull IAsyncContentProvider asyncContentProvider) { |
| this.mAsyncContentProvider = asyncContentProvider; |
| } |
| |
| @NonNull |
| public ParcelFileDescriptor openMedia(@NonNull Uri uri, @NonNull String mode) |
| throws FileNotFoundException, ExecutionException, InterruptedException, |
| TimeoutException, RemoteException { |
| String mediaId = uri.getLastPathSegment(); |
| CompletableFuture<ParcelFileDescriptor> future = new CompletableFuture<>(); |
| RemoteCallback callback = new RemoteCallback(result -> setResult(result, future)); |
| mAsyncContentProvider.openMedia(mediaId, callback); |
| return future.get(TIMEOUT_IN_SECONDS, TimeUnit.SECONDS); |
| } |
| |
| private void setResult(Bundle result, CompletableFuture<ParcelFileDescriptor> future) { |
| if (result.containsKey(EXTRA_FILE_DESCRIPTOR)) { |
| ParcelFileDescriptor pfd = result.getParcelable(EXTRA_FILE_DESCRIPTOR); |
| future.complete(pfd); |
| } else if (result.containsKey(EXTRA_ERROR_MESSAGE)) { |
| future.completeExceptionally( |
| new RemoteException( |
| result.getString(EXTRA_ERROR_MESSAGE))); |
| } else { |
| future.completeExceptionally( |
| new RemoteException( |
| "File descriptor and error message missing in response from " |
| + "CloudMediaProvider")); |
| } |
| } |
| } |